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/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
 */
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this.throwIfDisposed(),xt.depthToSpace(this,t,e)},t.prototype.fft=function(){return this.throwIfDisposed(),xt.spectral.fft(this)},t.prototype.ifft=function(){return this.throwIfDisposed(),xt.spectral.ifft(this)},t.prototype.rfft=function(){return this.throwIfDisposed(),xt.spectral.rfft(this)},t.prototype.irfft=function(){return this.throwIfDisposed(),xt.spectral.irfft(this)},t}();Object.defineProperty(wt,Symbol.hasInstance,{value:function(t){return!!t&&null!=t.dataId&&null!=t.shape&&null!=t.dtype}});var Ct,Et,St,Nt,It,Rt=function(t){function e(e,n,r,a){var o=t.call(this,e.shape,e.dtype,e.dataId,a)||this;return o.trainable=n,o.name=r,o}return s(e,t),e.prototype.assign=function(t){if(t.dtype!==this.dtype)throw new Error("dtype of the new value ("+t.dtype+") and previous value ("+this.dtype+") must match");if(!_(t.shape,this.shape))throw new Error("shape of the new value ("+t.shape+") and previous value ("+this.shape+") must 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with "+e)}return Tt[t][e]}function At(t){return kt(t,"int32")}function Ot(t,e){if(t.dtype===e.dtype)return[t,e];var n=kt(t.dtype,e.dtype);return[t.cast(n),e.cast(n)]}function Dt(t,e){T(t.dtype===e.dtype,(function(){return"The dtypes of the first("+t.dtype+") and second("+e.dtype+") input must match"}))}function _t(t){var e=[];return function t(e,n,r){if(null!=e)if(e instanceof wt)n.push(e);else if(a=e,Array.isArray(a)||"object"==typeof a){var a,o=e;for(var i in o){var s=o[i];r.has(s)||(r.add(s),t(s,n,r))}}}(t,e,new Set),e}var Ft,Mt=Object.freeze({makeTypesMatch:Ot,assertTypesMatch:Dt,isTensorInList:function(t,e){for(var n=0;n<e.length;n++)if(e[n].id===t.id)return!0;return!1},getTensorsInContainer:_t}),Bt=function(){function t(){this.registeredVariables={},this.nextTapeNodeId=0,this.numBytes=0,this.numTensors=0,this.numStringTensors=0,this.numDataBuffers=0,this.gradientDepth=0,this.kernelDepth=0,this.scopeStack=[],this.numDataMovesStack=[],this.nextScopeId=0,this.tensorInfo=new WeakMap,this.profiling=!1,this.activeProfile={newBytes:0,newTensors:0,peakBytes:0,kernels:[],result:null}}return t.prototype.dispose=function(){for(var t in this.registeredVariables)this.registeredVariables[t].dispose()},t}(),Pt=function(){function t(t){this.ENV=t,this.registry={},this.registryFactory={},this.pendingBackendInitId=0,this.state=new Bt}return t.prototype.ready=function(){return u(this,void 0,void 0,(function(){var t,e,n;return c(this,(function(r){switch(r.label){case 0:if(null!=this.pendingBackendInit)return[2,this.pendingBackendInit.then((function(){}))];if(null!=this.backendInstance)return[2];t=this.getSortedBackends(),e=0,r.label=1;case 1:return e<t.length?(n=t[e],[4,this.initializeBackend(n).success]):[3,5];case 2:return r.sent()?[4,this.setBackend(n)]:[3,4];case 3:return r.sent(),[2];case 4:return e++,[3,1];case 5:throw new Error("Could not initialize any backends, all backend initializations failed.")}}))}))},Object.defineProperty(t.prototype,"backend",{get:function(){if(null!=this.pendingBackendInit)throw new Error("Backend '"+this.backendName+"' has not yet been initialized. Make sure to await tf.ready() or await tf.setBackend() before calling other methods");if(null==this.backendInstance){var t=this.initializeBackendsAndReturnBest(),e=t.name;if(t.asyncInit)throw new Error("The highest priority backend '"+e+"' has not yet been initialized. Make sure to await tf.ready() or await tf.setBackend() before calling other methods");this.setBackend(e)}return this.backendInstance},enumerable:!0,configurable:!0}),t.prototype.backendNames=function(){return Object.keys(this.registryFactory)},t.prototype.findBackend=function(t){if(!(t in this.registry)){if(!(t in this.registryFactory))return null;if(this.initializeBackend(t).asyncInit)return null}return this.registry[t]},t.prototype.findBackendFactory=function(t){return t in this.registryFactory?this.registryFactory[t].factory:null},t.prototype.registerBackend=function(t,e,n){return void 0===n&&(n=1),t in this.registryFactory?(console.warn(t+" backend was already registered. Reusing existing backend factory."),!1):(this.registryFactory[t]={factory:e,priority:n},!0)},t.prototype.setBackend=function(t){return u(this,void 0,void 0,(function(){var e,n,r;return c(this,(function(a){switch(a.label){case 0:if(null==this.registryFactory[t])throw new Error("Backend name '"+t+"' not found in registry");return this.backendName=t,null!=this.registry[t]?[3,4]:(this.backendInstance=null,e=this.initializeBackend(t),n=e.success,e.asyncInit?[4,n]:[3,2]);case 1:return r=a.sent(),[3,3];case 2:r=n,a.label=3;case 3:if(!r)return[2,!1];a.label=4;case 4:return this.backendInstance=this.registry[t],this.setupRegisteredKernels(),this.profiler=new ft(this.backendInstance),[2,!0]}}))}))},t.prototype.setupRegisteredKernels=function(){var t=this;y(this.backendName).forEach((function(e){null!=e.setupFunc&&e.setupFunc(t.backendInstance)}))},t.prototype.disposeRegisteredKernels=function(t){var e=this;y(t).forEach((function(n){null!=n.disposeFunc&&n.disposeFunc(e.registry[t])}))},t.prototype.initializeBackend=function(t){var e=this,n=this.registryFactory[t];if(null==n)throw new Error("Cannot initialize backend "+t+", no registration found.");try{var r=n.factory();if(Promise.resolve(r)===r){var a=++this.pendingBackendInitId,o=r.then((function(n){return!(a<e.pendingBackendInitId||(e.registry[t]=n,e.pendingBackendInit=null,0))})).catch((function(n){return!(a<e.pendingBackendInitId||(e.pendingBackendInit=null,console.warn("Initialization of backend "+t+" failed"),console.warn(n.stack||n.message),1))}));return this.pendingBackendInit=o,{success:o,asyncInit:!0}}return this.registry[t]=r,{success:!0,asyncInit:!1}}catch(e){return console.warn("Initialization of backend "+t+" failed"),console.warn(e.stack||e.message),{success:!1,asyncInit:!1}}},t.prototype.removeBackend=function(t){if(!(t in this.registryFactory))throw new Error(t+" backend not found in registry");this.backendName===t&&null!=this.pendingBackendInit&&this.pendingBackendInitId++,t in this.registry&&(this.disposeRegisteredKernels(t),this.registry[t].dispose(),delete this.registry[t]),delete this.registryFactory[t],this.backendName===t&&(this.pendingBackendInit=null,this.backendName=null,this.backendInstance=null)},t.prototype.getSortedBackends=function(){var t=this;if(0===Object.keys(this.registryFactory).length)throw new Error("No backend found in registry.");return Object.keys(this.registryFactory).sort((function(e,n){return t.registryFactory[n].priority-t.registryFactory[e].priority}))},t.prototype.initializeBackendsAndReturnBest=function(){for(var t=this.getSortedBackends(),e=0;e<t.length;e++){var n=t[e],r=this.initializeBackend(n),a=r.success,o=r.asyncInit;if(o||a)return{name:n,asyncInit:o}}throw new Error("Could not initialize any backends, all backend initializations failed.")},t.prototype.moveData=function(t,e){var n=this.state.tensorInfo.get(e),r=n.backend,a=this.readSync(e);r.disposeData(e),n.backend=t,t.move(e,a,n.shape,n.dtype),this.shouldCheckForMemLeaks()&&this.state.numDataMovesStack[this.state.numDataMovesStack.length-1]++},t.prototype.tidy=function(t,e){var n,r=this,a=null;if(null==e){if("function"!=typeof t)throw new Error("Please provide a function to tidy()");e=t}else{if("string"!=typeof t&&!(t instanceof String))throw new Error("When calling with two arguments, the first argument to tidy() must be a string");if("function"!=typeof e)throw new Error("When calling with two arguments, the 2nd argument to tidy() must be a function");a=t}return this.scopedRun((function(){return r.startScope(a)}),(function(){return r.endScope(n)}),(function(){return(n=e())instanceof Promise&&console.error("Cannot return a Promise inside of tidy."),n}))},t.prototype.scopedRun=function(t,e,n){t();try{var r=n();return e(),r}catch(t){throw e(),t}},t.prototype.nextTensorId=function(){return t.nextTensorId++},t.prototype.nextVariableId=function(){return t.nextVariableId++},t.prototype.clone=function(t){var e=this.makeTensorFromDataId(t.dataId,t.shape,t.dtype),n={x:t};return this.addTapeNode(this.state.activeScope.name,n,[e],(function(t){return{x:function(){return t.toFloat()}}}),[]),e},t.prototype.runKernel=function(t,e,n,r,a){return this.runKernelFunc(null,e,null,t,n,r,a)},t.prototype.shouldCheckForMemLeaks=function(){return this.ENV.getBool("IS_TEST")},t.prototype.checkKernelForMemLeak=function(t,e,n){var r=this.backend.numDataIds(),a=0;n.forEach((function(t){a+="complex64"===t.dtype?3:1}));var o=this.state.numDataMovesStack[this.state.numDataMovesStack.length-1],i=r-e-a-o;if(i>0)throw new Error("Backend '"+this.backendName+"' has an internal memory leak ("+i+" data ids) after running '"+t+"'")},t.prototype.runKernelFunc=function(t,e,n,r,a,o,i){var s,u=this;void 0===o&&(o=[]),void 0===i&&(i=[]);var c=[],l=this.isTapeOn();null==r&&(r=null!=this.state.activeScope?this.state.activeScope.name:"");var p,f=function(t){l&&(c=t.map((function(t){return u.keep(u.clone(t))})))},d=this.state.numBytes,h=this.state.numTensors;this.shouldCheckForMemLeaks()&&this.state.numDataMovesStack.push(0);var m,g=v(r,this.backendName);return p=null!=g?function(){var t=u.backend.numDataIds();m=g.kernelFunc({inputs:e,attrs:a,backend:u.backend});var n=Array.isArray(m)?m:[m];u.shouldCheckForMemLeaks()&&u.checkKernelForMemLeak(r,t,n);var s=n.map((function(t){var e=t.dataId,n=t.shape,r=t.dtype;return u.makeTensorFromDataId(e,n,r)})),c=s.filter((function(t,e){return i[e]}));return f((o||[]).slice().concat(c)),s}:function(){var e=u.backend.numDataIds();m=u.tidy((function(){return t(u.backend,f)}));var n=Array.isArray(m)?m:[m];return u.shouldCheckForMemLeaks()&&u.checkKernelForMemLeak(r,e,n),n},this.scopedRun((function(){return u.state.kernelDepth++}),(function(){return u.state.kernelDepth--}),(function(){s=u.ENV.getBool("DEBUG")?u.profiler.profileKernel(r,e,(function(){return p()})):p()})),l&&this.addTapeNode(r,e,s,n,c),this.state.profiling&&this.state.activeProfile.kernels.push({name:r,bytesAdded:this.state.numBytes-d,totalBytesSnapshot:this.state.numBytes,tensorsAdded:this.state.numTensors-h,totalTensorsSnapshot:this.state.numTensors,inputShapes:Object.keys(e).map((function(t){return e[t].shape})),outputShapes:s.map((function(t){return t.shape}))}),Array.isArray(m)?s:s[0]},t.prototype.makeTensor=function(t,e,n,r){if(null==t)throw new Error("Values passed to engine.makeTensor() are null");n=n||"float32",r=r||this.backend;var a=t;"string"===n&&$(t[0])&&(a=t.map((function(t){return ct(t)})));var o=r.write(a,e,n),i=new wt(e,n,o,this.nextTensorId());if(this.incRef(i,r),"string"===n){var s=this.state.tensorInfo.get(o),u=Y(a);this.state.numBytes+=u-s.bytes,s.bytes=u}return i},t.prototype.makeTensorFromDataId=function(t,e,n,r){var a=new wt(e,n=n||"float32",t,this.nextTensorId());return this.incRef(a,r),a},t.prototype.makeVariable=function(t,e,n,r){void 0===e&&(e=!0),n=n||this.nextVariableId().toString(),null!=r&&r!==t.dtype&&(t=t.asType(r));var a=new Rt(t,e,n,this.nextTensorId());if(null!=this.state.registeredVariables[a.name])throw new Error("Variable with name "+a.name+" was already registered");return this.state.registeredVariables[a.name]=a,this.incRef(a,this.backend),a},t.prototype.incRef=function(t,e){var n=this.state.tensorInfo.has(t.dataId)?this.state.tensorInfo.get(t.dataId).refCount:0;if(this.state.numTensors++,"string"===t.dtype&&this.state.numStringTensors++,0===n){this.state.numDataBuffers++;var r=0;"complex64"!==t.dtype&&"string"!==t.dtype&&(r=t.size*X(t.dtype)),this.state.tensorInfo.set(t.dataId,{backend:e||this.backend,dtype:t.dtype,shape:t.shape,bytes:r,refCount:0}),this.state.numBytes+=r}this.state.tensorInfo.get(t.dataId).refCount++,t instanceof Rt||this.track(t)},t.prototype.disposeTensor=function(t){if(this.state.tensorInfo.has(t.dataId)){this.state.numTensors--,"string"===t.dtype&&this.state.numStringTensors--;var e=this.state.tensorInfo.get(t.dataId);e.refCount<=1?("complex64"!==t.dtype&&(this.state.numBytes-=e.bytes),this.state.numDataBuffers--,e.backend.disposeData(t.dataId),this.state.tensorInfo.delete(t.dataId)):this.state.tensorInfo.get(t.dataId).refCount--}},t.prototype.disposeVariables=function(){for(var t in this.state.registeredVariables){var e=this.state.registeredVariables[t];this.disposeVariable(e)}},t.prototype.disposeVariable=function(t){this.disposeTensor(t),null!=this.state.registeredVariables[t.name]&&delete this.state.registeredVariables[t.name]},t.prototype.memory=function(){var t=this.backend.memory();return t.numTensors=this.state.numTensors,t.numDataBuffers=this.state.numDataBuffers,t.numBytes=this.state.numBytes,this.state.numStringTensors>0&&(t.unreliable=!0,null==t.reasons&&(t.reasons=[]),t.reasons.push("Memory usage by string tensors is approximate (2 bytes per character)")),t},t.prototype.profile=function(t){return u(this,void 0,void 0,(function(){var e,n;return c(this,(function(r){return this.state.profiling=!0,e=this.state.numBytes,n=this.state.numTensors,this.state.activeProfile.kernels=[],this.state.activeProfile.result=t(),this.state.profiling=!1,this.state.activeProfile.peakBytes=Math.max.apply(Math,this.state.activeProfile.kernels.map((function(t){return t.totalBytesSnapshot}))),this.state.activeProfile.newBytes=this.state.numBytes-e,this.state.activeProfile.newTensors=this.state.numTensors-n,[2,this.state.activeProfile]}))}))},t.prototype.isTapeOn=function(){return this.state.gradientDepth>0&&0===this.state.kernelDepth},t.prototype.addTapeNode=function(t,e,n,r,a){var o=this,i={id:this.state.nextTapeNodeId++,kernelName:t,inputs:e,outputs:n,saved:a},s=g(t);null!=s&&(r=s.gradFunc),null!=r&&(i.gradient=function(t){return t=t.map((function(t,e){if(null==t){var r=n[e],a=it(r.size,r.dtype);return o.makeTensor(a,r.shape,r.dtype)}return t})),r(t.length>1?t:t[0],a)}),this.state.activeTape.push(i)},t.prototype.keep=function(t){return t.kept=!0,t},t.prototype.startTape=function(){0===this.state.gradientDepth&&(this.state.activeTape=[]),this.state.gradientDepth++},t.prototype.endTape=function(){this.state.gradientDepth--},t.prototype.startScope=function(t){var e={track:[],name:"unnamed scope",id:this.state.nextScopeId++};t&&(e.name=t),this.state.scopeStack.push(e),this.state.activeScope=e},t.prototype.endScope=function(t){for(var e=this,n=_t(t),r=new Set(n.map((function(t){return t.id}))),a=0;a<this.state.activeScope.track.length;a++){var o=this.state.activeScope.track[a];o.kept||r.has(o.id)||o.dispose()}var i=this.state.scopeStack.pop();this.state.activeScope=0===this.state.scopeStack.length?null:this.state.scopeStack[this.state.scopeStack.length-1],n.forEach((function(t){t.kept||t.scopeId!==i.id||e.track(t)}))},t.prototype.gradients=function(t,e,n,r){var a=this;if(void 0===r&&(r=!1),T(e.length>0,(function(){return"gradients() received an empty list of xs."})),null!=n&&"float32"!==n.dtype)throw new Error("dy must have 'float32' dtype, but has '"+n.dtype+"'");var o=this.scopedRun((function(){return a.startTape()}),(function(){return a.endTape()}),(function(){return a.tidy("forward",t)}));T(o instanceof wt,(function(){return"The result y returned by f() must be a tensor."}));var i=function(t,e,n){for(var r={},a={},o=0;o<e.length;o++)r[e[o].id]=!0;for(o=0;o<t.length;o++){var i=(h=t[o]).inputs;for(var s in i){for(var u=i[s],c=!1,l=0;l<e.length;l++)if(r[u.id]){h.outputs.forEach((function(t){return r[t.id]=!0})),c=!0,a[h.id]=!0;break}if(c)break}}var p={};p[n.id]=!0;var f={};for(o=t.length-1;o>=0;o--)for(i=(h=t[o]).inputs,l=0;l<h.outputs.length;l++)if(p[h.outputs[l].id]){for(var s in i)p[i[s].id]=!0,f[h.id]=!0;break}var d=[];for(o=0;o<t.length;o++){var h;if(a[(h=t[o]).id]&&f[h.id]){var m={};for(var s in h.inputs){var v=h.inputs[s];r[v.id]&&(m[s]=v)}var g=Object.assign({},h);g.inputs=m,g.outputs=h.outputs,d.push(g)}}return d}(this.state.activeTape,e,o);if(!r&&0===i.length&&e.length>0)throw new Error("Cannot compute gradient of y=f(x) with respect to x. Make sure that the f you passed encloses all operations that lead from x to y.");return this.tidy("backward",(function(){var t,r,s={};s[o.id]=null==n?(r=ot(D(t=o.shape),"float32"),Lt.makeTensor(r,t,"float32")):n,function(t,e,n){for(var r=function(r){var a=e[r],o=[];if(a.outputs.forEach((function(e){var n=t[e.id];null!=n?o.push(n):o.push(null)})),null==a.gradient)throw new Error("Cannot compute gradient: gradient function not found for "+a.kernelName+".");var i=a.gradient(o),s=function(e){if(!(e in i))throw new Error("Cannot backprop through input "+e+". Available gradients found: "+Object.keys(i)+".");var r=n((function(){return i[e]()}));if("float32"!==r.dtype)throw new Error("Error in gradient for op "+a.kernelName+". The gradient of input "+e+" must have 'float32' dtype, but has '"+r.dtype+"'");var o=a.inputs[e];if(!_(r.shape,o.shape))throw new Error("Error in gradient for op "+a.kernelName+". 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2===f().getNumber("WEBGL_VERSION")?(t="#version 300 es",e="in",n="out",r="in",a="texture",o="outputColor",i="out vec4 outputColor;",s="\n      bool isnan_custom(float val) {\n        return (val > 0.0 || val < 0.0) ? false : val != 0.0;\n      }\n\n      bvec4 isnan_custom(vec4 val) {\n        return bvec4(isnan_custom(val.x),\n          isnan_custom(val.y), isnan_custom(val.z), isnan_custom(val.w));\n      }\n\n      #define isnan(value) isnan_custom(value)\n    ",u="",c="\n      #define round(value) newRound(value)\n      int newRound(float value) {\n        return int(floor(value + 0.5));\n      }\n\n      ivec4 newRound(vec4 value) {\n        return ivec4(floor(value + vec4(0.5)));\n      }\n    "):(t="",e="attribute",n="varying",r="varying",a="texture2D",o="gl_FragColor",i="",s="\n      #define isnan(value) isnan_custom(value)\n      bool isnan_custom(float val) {\n        return (val > 0. || val < 1. || val == 0.) ? false : true;\n      }\n      bvec4 isnan_custom(vec4 val) {\n   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* "+e[1]+" + coords.z;\n  }\n"}var ro="\n  const float FLOAT_MAX = 1.70141184e38;\n  const float FLOAT_MIN = 1.17549435e-38;\n\n  lowp vec4 encode_float(highp float v) {\n    if (isnan(v)) {\n      return vec4(255, 255, 255, 255);\n    }\n\n    highp float av = abs(v);\n\n    if(av < FLOAT_MIN) {\n      return vec4(0.0, 0.0, 0.0, 0.0);\n    } else if(v > FLOAT_MAX) {\n      return vec4(0.0, 0.0, 128.0, 127.0) / 255.0;\n    } else if(v < -FLOAT_MAX) {\n      return vec4(0.0, 0.0,  128.0, 255.0) / 255.0;\n    }\n\n    highp vec4 c = vec4(0,0,0,0);\n\n    highp float e = floor(log2(av));\n    highp float m = exp2(fract(log2(av))) - 1.0;\n\n    c[2] = floor(128.0 * m);\n    m -= c[2] / 128.0;\n    c[1] = floor(32768.0 * m);\n    m -= c[1] / 32768.0;\n    c[0] = floor(8388608.0 * m);\n\n    highp float ebias = e + 127.0;\n    c[3] = floor(ebias / 2.0);\n    ebias -= c[3] * 2.0;\n    c[2] += floor(ebias) * 128.0;\n\n    c[3] += 128.0 * step(0.0, -v);\n\n    return c / 255.0;\n  }\n";function ao(t,e,n,r){var a=[];t.forEach((function(t){var e=D(t.shapeInfo.logicalShape);t.shapeInfo.isUniform?a.push("uniform float "+t.name+(e>1?"["+e+"]":"")+";"):(a.push("uniform sampler2D "+t.name+";"),a.push("uniform int offset"+t.name+";"))}));var o,i,s=a.join("\n"),u=t.map((function(t){return function(t,e,n){void 0===n&&(n=!1);var r="";r+=n?function t(e){var n,r,a;switch(e.shapeInfo.logicalShape.length){case 0:return n=e.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),a=to(),"\n    vec4 "+r+"() {\n      return "+a.texture2D+"("+n+", halfCR);\n    }\n  ";case 1:return function(t){var e=t.name,n="get"+e.charAt(0).toUpperCase()+e.slice(1),r=t.shapeInfo.texShape,a=[Math.ceil(r[0]/2),Math.ceil(r[1]/2)],o=to();return"\n    vec4 "+n+"(int index) {\n      vec2 uv = packedUVfrom1D(\n        "+a[0]+", "+a[1]+", index);\n      return "+o.texture2D+"("+e+", uv);\n    }\n  "}(e);case 2:return function(t){var e=t.shapeInfo.logicalShape,n=t.name,r="get"+n.charAt(0).toUpperCase()+n.slice(1),a=t.shapeInfo.texShape,o=a[0],i=a[1],s=to();if(null!=a&&_(e,a))return"\n      vec4 "+r+"(int row, int col) {\n        vec2 uv = (vec2(col, row) + halfCR) / vec2("+i+".0, "+o+".0);\n\n        return "+s.texture2D+"("+n+", uv);\n      }\n    ";var u=[Math.ceil(a[0]/2),Math.ceil(a[1]/2)];return"\n    vec4 "+r+"(int row, int col) {\n      vec2 uv = packedUVfrom2D("+Math.ceil(e[1]/2)+", "+u[0]+", "+u[1]+", row, col);\n      return "+s.texture2D+"("+n+", uv);\n    }\n  "}(e);case 3:return function(e){var n=e.shapeInfo.logicalShape,r=e.name,a="get"+r.charAt(0).toUpperCase()+r.slice(1),o=e.shapeInfo.texShape,i=[Math.ceil(o[0]/2),Math.ceil(o[1]/2)];if(1===n[0]){var s=fo(e,n.slice(1));return"\n        "+t(s)+"\n        vec4 "+a+"(int b, int row, int col) {\n          return "+a+"("+ho(["b","row","col"],[1,2])+");\n        }\n      "}var u=i[0],c=i[1],l=Math.ceil(n[2]/2);return"\n    vec4 "+a+"(int b, int row, int col) {\n      vec2 uv = packedUVfrom3D(\n        "+u+", "+c+", "+l*Math.ceil(n[1]/2)+", "+l+", b, row, col);\n      return "+to().texture2D+"("+r+", uv);\n    }\n  "}(e);default:return function(t){for(var e=t.shapeInfo.logicalShape,n=e.length,r=t.name,a="get"+r.charAt(0).toUpperCase()+r.slice(1),o=t.shapeInfo.texShape,i=[Math.ceil(o[0]/2),Math.ceil(o[1]/2)],s=i[0],u=i[1],c=Math.ceil(e[n-1]/2),l=c*Math.ceil(e[n-2]/2),p="int b, int row, int col",f="b * "+l+" + (row / 2) * "+c+" + (col / 2)",d=2;d<n-1;d++)p="int b"+d+", "+p,f="b"+d+" * "+(l*=e[n-d-1])+" + "+f;return"\n    vec4 "+a+"("+p+") {\n      int index = "+f+";\n      int texR = index / "+u+";\n      int texC = index - texR * "+u+";\n      vec2 uv = (vec2(texC, texR) + halfCR) / vec2("+u+", "+s+");\n      return "+to().texture2D+"("+r+", uv);\n    }\n  "}(e)}}(t):function t(e){var n=e.shapeInfo.logicalShape;switch(n.length){case 0:return function(t){var e=t.name,n="get"+e.charAt(0).toUpperCase()+e.slice(1);if(t.shapeInfo.isUniform)return"float "+n+"() {return "+e+";}";var r=t.shapeInfo.texShape,a=r[0],o=r[1];if(1===a&&1===o)return"\n      float "+n+"() {\n        return sampleTexture("+e+", halfCR);\n      }\n    ";var i=t.shapeInfo.texShape;return"\n    float "+n+"() {\n      vec2 uv = uvFromFlat("+i[0]+", "+i[1]+", "+co(e)+");\n      return sampleTexture("+e+", uv);\n    }\n  "}(e);case 1:return function(t){var e=t.name,n="get"+e.charAt(0).toUpperCase()+e.slice(1);if(t.shapeInfo.isUniform)return"\n      float "+n+"(int index) {\n        "+lo(t)+"\n      }\n    ";var r=t.shapeInfo.texShape,a=r[0],o=r[1];if(1===o&&1===a)return"\n      float "+n+"(int index) {\n        return sampleTexture("+e+", halfCR);\n      }\n    ";var i=co(e);return 1===o?"\n      float "+n+"(int index) {\n        vec2 uv = vec2(0.5, (float(index + "+i+") + 0.5) / "+a+".0);\n        return sampleTexture("+e+", uv);\n      }\n    ":1===a?"\n      float "+n+"(int index) {\n        vec2 uv = vec2((float(index + "+i+") + 0.5) / "+o+".0, 0.5);\n        return sampleTexture("+e+", uv);\n      }\n    ":"\n    float "+n+"(int index) {\n      vec2 uv = uvFromFlat("+a+", "+o+", index + "+i+");\n      return sampleTexture("+e+", uv);\n    }\n  "}(e);case 2:return function(e){var n=e.shapeInfo.logicalShape,r=e.name,a="get"+r.charAt(0).toUpperCase()+r.slice(1),o=e.shapeInfo.texShape;if(null!=o&&_(n,o)){var i=o[0];return"\n    float "+a+"(int row, int col) {\n      vec2 uv = (vec2(col, row) + halfCR) / vec2("+o[1]+".0, "+i+".0);\n      return sampleTexture("+r+", uv);\n    }\n  "}var s=z(n),u=s.newShape,c=s.keptDims,l=u;if(l.length<n.length){var p=fo(e,l);return"\n      "+t(p)+"\n      float "+a+"(int row, int col) {\n        return "+a+"("+ho(["row","col"],c)+");\n      }\n    "}if(e.shapeInfo.isUniform)return"\n      float "+a+"(int row, int col) {\n        int index = round(dot(vec2(row, col), vec2("+n[1]+", 1)));\n        "+lo(e)+"\n      }\n    ";var f=o[0],d=o[1],h=co(r);return 1===d?"\n    float "+a+"(int row, int col) {\n      float index = dot(vec3(row, col, "+h+"), vec3("+n[1]+", 1, 1));\n      vec2 uv = vec2(0.5, (index + 0.5) / "+f+".0);\n      return sampleTexture("+r+", uv);\n    }\n  ":1===f?"\n    float "+a+"(int row, int col) {\n      float index = dot(vec3(row, col, "+h+"), vec3("+n[1]+", 1, 1));\n      vec2 uv = vec2((index + 0.5) / "+d+".0, 0.5);\n      return sampleTexture("+r+", uv);\n    }\n  ":"\n  float "+a+"(int row, int col) {\n    // Explicitly use integer operations as dot() only works on floats.\n    int index = row * "+n[1]+" + col + "+h+";\n    vec2 uv = uvFromFlat("+f+", "+d+", index);\n    return sampleTexture("+r+", uv);\n  }\n"}(e);case 3:return function(e){var n=e.shapeInfo.logicalShape,r=e.name,a="get"+r.charAt(0).toUpperCase()+r.slice(1),o=n[1]*n[2],i=n[2],s=z(n),u=s.newShape,c=s.keptDims,l=u;if(l.length<n.length){var p=fo(e,l);return"\n        "+t(p)+"\n        float "+a+"(int row, int col, int depth) {\n          return "+a+"("+ho(["row","col","depth"],c)+");\n        }\n      "}if(e.shapeInfo.isUniform)return"\n      float "+a+"(int row, int col, int depth) {\n        int index = round(dot(vec3(row, col, depth),\n                          vec3("+o+", "+i+", 1)));\n        "+lo(e)+"\n      }\n    ";var f=e.shapeInfo.texShape,d=f[0],h=f[1],m=e.shapeInfo.flatOffset;return h===o&&null==m?"\n        float "+a+"(int row, int col, int depth) {\n          float texR = float(row);\n          float texC = dot(vec2(col, depth), vec2("+i+", 1));\n          vec2 uv = (vec2(texC, texR) + halfCR) /\n                     vec2("+h+".0, "+d+".0);\n          return sampleTexture("+r+", uv);\n        }\n      ":h===i&&null==m?"\n    float "+a+"(int row, int col, int depth) {\n      float texR = dot(vec2(row, col), vec2("+n[1]+", 1));\n      float texC = float(depth);\n      vec2 uv = (vec2(texC, texR) + halfCR) / vec2("+h+".0, "+d+".0);\n      return sampleTexture("+r+", uv);\n    }\n  ":"\n      float "+a+"(int row, int col, int depth) {\n        // Explicitly use integer operations as dot() only works on floats.\n        int index = row * "+o+" + col * "+i+" + depth + "+co(r)+";\n        vec2 uv = uvFromFlat("+d+", "+h+", index);\n        return sampleTexture("+r+", uv);\n      }\n  "}(e);case 4:return function(e){var n=e.shapeInfo.logicalShape,r=e.name,a="get"+r.charAt(0).toUpperCase()+r.slice(1),o=n[3],i=n[2]*o,s=n[1]*i,u=z(n),c=u.newShape,l=u.keptDims;if(c.length<n.length){var p=fo(e,c);return"\n      "+t(p)+"\n      float "+a+"(int row, int col, int depth, int depth2) {\n        return "+a+"("+ho(["row","col","depth","depth2"],l)+");\n      }\n    "}if(e.shapeInfo.isUniform)return"\n      float "+a+"(int row, int col, int depth, int depth2) {\n        int index = round(dot(vec4(row, col, depth, depth2),\n                          vec4("+s+", "+i+", "+o+", 1)));\n        "+lo(e)+"\n      }\n    ";var f=e.shapeInfo.flatOffset,d=e.shapeInfo.texShape,h=d[0],m=d[1];return m===s&&null==f?"\n      float "+a+"(int row, int col, int depth, int depth2) {\n        float texR = float(row);\n        float texC =\n            dot(vec3(col, depth, depth2),\n                vec3("+i+", "+o+", 1));\n        vec2 uv = (vec2(texC, texR) + halfCR) /\n                   vec2("+m+".0, "+h+".0);\n        return sampleTexture("+r+", uv);\n      }\n    ":m===o&&null==f?"\n      float "+a+"(int row, int col, int depth, int depth2) {\n        float texR = dot(vec3(row, col, depth),\n                         vec3("+n[1]*n[2]+", "+n[2]+", 1));\n        float texC = float(depth2);\n        vec2 uv = (vec2(texC, texR) + halfCR) /\n                  vec2("+m+".0, "+h+".0);\n        return sampleTexture("+r+", uv);\n      }\n    ":"\n    float "+a+"(int row, int col, int depth, int depth2) {\n      // Explicitly use integer operations as dot() only works on floats.\n      int index = row * "+s+" + col * "+i+" +\n          depth * "+o+" + depth2;\n      vec2 uv = uvFromFlat("+h+", "+m+", index + "+co(r)+");\n      return sampleTexture("+r+", uv);\n    }\n  "}(e);case 5:return function(e){var n=e.shapeInfo.logicalShape,r=e.name,a="get"+r.charAt(0).toUpperCase()+r.slice(1),o=n[4],i=n[3]*o,s=n[2]*i,u=n[1]*s,c=z(n),l=c.newShape,p=c.keptDims;if(l.length<n.length){var f=fo(e,l);return"\n      "+t(f)+"\n      float "+a+"(int row, int col, int depth, int depth2, int depth3) {\n        return "+a+"("+ho(["row","col","depth","depth2","depth3"],p)+");\n      }\n    "}if(e.shapeInfo.isUniform)return"\n      float "+a+"(int row, int col, int depth, int depth2, int depth3) {\n        float index = dot(\n          vec4(row, col, depth, depth2),\n          vec4("+u+", "+s+", "+i+", "+o+")) +\n          depth3;\n        "+lo(e)+"\n      }\n    ";var d=e.shapeInfo.flatOffset,h=e.shapeInfo.texShape,m=h[0],v=h[1];return v===u&&null==d?"\n      float "+a+"(int row, int col, int depth, int depth2, int depth3) {\n        int texR = row;\n        float texC = dot(vec4(col, depth, depth2, depth3),\n                         vec4("+s+", "+i+", "+o+", 1));\n        vec2 uv = (vec2(texC, texR) + halfCR) /\n                   vec2("+v+".0, "+m+".0);\n        return sampleTexture("+r+", uv);\n      }\n    ":v===o&&null==d?"\n      float "+a+"(int row, int col, int depth, int depth2, int depth3) {\n        float texR = dot(\n          vec4(row, col, depth, depth2),\n          vec4("+n[1]*n[2]*n[3]+",\n               "+n[2]*n[3]+", "+n[3]+", 1));\n        int texC = depth3;\n        vec2 uv = (vec2(texC, texR) + halfCR) /\n                  vec2("+v+".0, "+m+".0);\n        return sampleTexture("+r+", uv);\n      }\n    ":"\n    float "+a+"(int row, int col, int depth, int depth2, int depth3) {\n      // Explicitly use integer operations as dot() only works on floats.\n      int index = row * "+u+" + col * "+s+" + depth * "+i+" +\n          depth2 * "+o+" + depth3 + "+co(r)+";\n      vec2 uv = uvFromFlat("+m+", "+v+", index);\n      return sampleTexture("+r+", uv);\n    }\n  "}(e);case 6:return function(e){var n=e.shapeInfo.logicalShape,r=e.name,a="get"+r.charAt(0).toUpperCase()+r.slice(1),o=z(n),i=o.newShape,s=o.keptDims;if(i.length<n.length){var u=fo(e,i);return"\n      "+t(u)+"\n      float "+a+"(int row, int col, int depth,\n                    int depth2, int depth3, int depth4) {\n        return "+a+"("+ho(["row","col","depth","depth2","depth3","depth4"],s)+");\n      }\n    "}var c=n[5],l=n[4]*c,p=n[3]*l,f=n[2]*p,d=n[1]*f;if(e.shapeInfo.isUniform)return"\n      float "+a+"(int row, int col, int depth,\n                  int depth2, int depth3, int depth4) {\n        int index = round(dot(\n          vec4(row, col, depth, depth2),\n          vec4("+d+", "+f+", "+p+", "+l+")) +\n          dot(\n            vec2(depth3, depth4),\n            vec2("+c+", 1)));\n        "+lo(e)+"\n      }\n    ";var h=e.shapeInfo.flatOffset,m=e.shapeInfo.texShape,v=m[0],g=m[1];return g===d&&null==h?"\n      float "+a+"(int row, int col, int depth,\n                    int depth2, int depth3, int depth4) {\n        int texR = row;\n        float texC = dot(vec4(col, depth, depth2, depth3),\n          vec4("+f+", "+p+", "+l+", "+c+")) +\n               float(depth4);\n        vec2 uv = (vec2(texC, texR) + halfCR) /\n                   vec2("+g+".0, "+v+".0);\n        return sampleTexture("+r+", uv);\n      }\n    ":g===c&&null==h?"\n      float "+a+"(int row, int col, int depth,\n                    int depth2, int depth3, int depth4) {\n        float texR = dot(vec4(row, col, depth, depth2),\n          vec4("+n[1]*n[2]*n[3]*n[4]+",\n               "+n[2]*n[3]*n[4]+",\n               "+n[3]*n[4]+",\n               "+n[4]+")) + float(depth3);\n        int texC = depth4;\n        vec2 uv = (vec2(texC, texR) + halfCR) /\n                  vec2("+g+".0, "+v+".0);\n        return sampleTexture("+r+", uv);\n      }\n    ":"\n    float "+a+"(int row, int col, int depth,\n                  int depth2, int depth3, int depth4) {\n      // Explicitly use integer operations as dot() only works on floats.\n      int index = row * "+d+" + col * "+f+" + depth * "+p+" +\n          depth2 * "+l+" + depth3 * "+c+" + depth4 + "+co(r)+";\n      vec2 uv = uvFromFlat("+v+", "+g+", index);\n      return sampleTexture("+r+", uv);\n    }\n  "}(e);default:throw new Error(n.length+"-D input sampling is not yet supported")}}(t);var a=t.shapeInfo.logicalShape,o=e.logicalShape;return a.length<=o.length&&(r+=n?function(t,e){var n,r=t.name,a=r.charAt(0).toUpperCase()+r.slice(1),o="get"+a+"AtOutCoords",i=t.shapeInfo.logicalShape.length,s=e.logicalShape.length,u=ha(t.shapeInfo.logicalShape,e.logicalShape),c=po(s),l=s-i,p=["x","y","z","w","u","v"];n=0===i?"":s<2&&u.length>=1?"coords = 0;":u.map((function(t){return"coords."+p[t+l]+" = 0;"})).join("\n");var f;f=s<2&&i>0?"coords":t.shapeInfo.logicalShape.map((function(t,e){return"coords."+p[e+l]})).join(", ");var d="return outputValue;",h=1===D(t.shapeInfo.logicalShape),m=1===D(e.logicalShape);if(1!==i||h||m){if(h&&!m)d=1===s?"\n        return vec4(outputValue.x, outputValue.x, 0., 0.);\n      ":"\n        return vec4(outputValue.x);\n      ";else if(u.length){var v=i-2,g=i-1;u.indexOf(v)>-1&&u.indexOf(g)>-1?d="return vec4(outputValue.x);":u.indexOf(v)>-1?d="return vec4(outputValue.x, outputValue.y, outputValue.x, outputValue.y);":u.indexOf(g)>-1&&(d="return vec4(outputValue.xx, outputValue.zz);")}}else d="\n      return vec4(outputValue.xy, outputValue.xy);\n    ";return"\n    vec4 "+o+"() {\n      "+c+" coords = getOutputCoords();\n      "+n+"\n      vec4 outputValue = get"+a+"("+f+");\n      "+d+"\n    }\n  "}(t,e):function(t,e){var n=t.name,r=n.charAt(0).toUpperCase()+n.slice(1),a="get"+r+"AtOutCoords",o=e.texShape,i=t.shapeInfo.texShape,s=t.shapeInfo.logicalShape.length,u=e.logicalShape.length;if(!t.shapeInfo.isUniform&&s===u&&null==t.shapeInfo.flatOffset&&_(i,o))return"\n      float "+a+"() {\n        return sampleTexture("+n+", resultUV);\n      }\n    ";var c=po(u),l=ha(t.shapeInfo.logicalShape,e.logicalShape),p=u-s,f=["x","y","z","w","u","v"];return"\n    float "+a+"() {\n      "+c+" coords = getOutputCoords();\n      "+(0===s?"":u<2&&l.length>=1?"coords = 0;":l.map((function(t){return"coords."+f[t+p]+" = 0;"})).join("\n"))+"\n      return get"+r+"("+(u<2&&s>0?"coords":t.shapeInfo.logicalShape.map((function(t,e){return"coords."+f[e+p]})).join(", "))+");\n    }\n  "}(t,e)),r}(t,e,r)})).join("\n"),c=e.texShape,l=to(),p=function(t){return"\n    float sampleTexture(sampler2D textureSampler, vec2 uv) {\n      return "+t.texture2D+"(textureSampler, uv).r;\n    }\n  "}(l),f=function(t){return t.version+"\n    precision highp float;\n    precision highp int;\n    precision highp sampler2D;\n    "+t.varyingFs+" vec2 resultUV;\n    "+t.defineOutput+"\n    const vec2 halfCR = vec2(0.5, 0.5);\n\n    struct ivec5\n    {\n      int x;\n      int y;\n      int z;\n      int w;\n      int u;\n    };\n\n    struct ivec6\n    {\n      int x;\n      int y;\n      int z;\n      int w;\n      int u;\n      int v;\n    };\n\n    uniform float NAN;\n    "+t.defineSpecialNaN+"\n    "+t.defineSpecialInf+"\n    "+t.defineRound+"\n\n    int imod(int x, int y) {\n      return x - y * (x / y);\n    }\n\n    int idiv(int a, int b, float sign) {\n      int res = a / b;\n      int mod = imod(a, b);\n      if (sign < 0. && mod != 0) {\n        res -= 1;\n      }\n      return res;\n    }\n\n    //Based on the work of Dave Hoskins\n    //https://www.shadertoy.com/view/4djSRW\n    #define HASHSCALE1 443.8975\n    float random(float seed){\n      vec2 p = resultUV * seed;\n      vec3 p3  = fract(vec3(p.xyx) * HASHSCALE1);\n      p3 += dot(p3, p3.yzx + 19.19);\n      return fract((p3.x + p3.y) * p3.z);\n    }\n\n    "+oo+"\n    "+io+"\n    "+so+"\n  "}(l);return e.isPacked?(o=function(t,e){switch(t.length){case 0:return"\n    int getOutputCoords() {\n      return 0;\n    }\n  ";case 1:return function(t,e){var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)];return 1===n[0]?"\n      int getOutputCoords() {\n        return 2 * int(resultUV.x * "+n[1]+".0);\n      }\n    ":1===n[1]?"\n      int getOutputCoords() {\n        return 2 * int(resultUV.y * "+n[0]+".0);\n      }\n    ":"\n    int getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n                             vec2("+n[0]+", "+n[1]+"));\n      return 2 * (resTexRC.x * "+n[1]+" + resTexRC.y);\n    }\n  "}(0,e);case 2:return function(t,e){var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)];if(_(t,e))return"\n      ivec2 getOutputCoords() {\n        return 2 * ivec2(resultUV.yx * vec2("+n[0]+", "+n[1]+"));\n      }\n    ";var r=Math.ceil(t[1]/2);return"\n    ivec2 getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n                             vec2("+n[0]+", "+n[1]+"));\n\n      int index = resTexRC.x * "+n[1]+" + resTexRC.y;\n      int r = 2 * (index / "+r+");\n      int c = imod(index, "+r+") * 2;\n\n      return ivec2(r, c);\n    }\n  "}(t,e);case 3:return n=t,r=e,a=[Math.ceil(r[0]/2),Math.ceil(r[1]/2)],i=(o=Math.ceil(n[2]/2))*Math.ceil(n[1]/2),"\n    ivec3 getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n                             vec2("+a[0]+", "+a[1]+"));\n      int index = resTexRC.x * "+a[1]+" + resTexRC.y;\n\n      int b = index / "+i+";\n      index -= b * "+i+";\n\n      int r = 2 * (index / "+o+");\n      int c = imod(index, "+o+") * 2;\n\n      return ivec3(b, r, c);\n    }\n  ";default:return function(t,e){for(var n=[Math.ceil(e[0]/2),Math.ceil(e[1]/2)],r=Math.ceil(t[t.length-1]/2),a=r*Math.ceil(t[t.length-2]/2),o=a,i="",s="b, r, c",u=2;u<t.length-1;u++)i="\n      int b"+u+" = index / "+(o*=t[t.length-u-1])+";\n      index -= b"+u+" * "+o+";\n    "+i,s="b"+u+", "+s;return"\n    ivec"+t.length+" getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n                             vec2("+n[0]+", "+n[1]+"));\n      int index = resTexRC.x * "+n[1]+" + resTexRC.y;\n\n      "+i+"\n\n      int b = index / "+a+";\n      index -= b * "+a+";\n\n      int r = 2 * (index / "+r+");\n      int c = imod(index, "+r+") * 2;\n\n      return ivec"+t.length+"("+s+");\n    }\n  "}(t,e)}var n,r,a,o,i}(e.logicalShape,c),i=function(t){return"\n    void setOutput(vec4 val) {\n      "+t.output+" = val;\n    }\n  "}(l)):(o=function(t,e){switch(t.length){case 0:return"\n    int getOutputCoords() {\n      return 0;\n    }\n  ";case 1:return function(t,e){return 1===e[0]?"\n      int getOutputCoords() {\n        return int(resultUV.x * "+e[1]+".0);\n      }\n    ":1===e[1]?"\n      int getOutputCoords() {\n        return int(resultUV.y * "+e[0]+".0);\n      }\n    ":"\n    int getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n                             vec2("+e[0]+", "+e[1]+"));\n      return resTexRC.x * "+e[1]+" + resTexRC.y;\n    }\n  "}(0,e);case 2:return function(t,e){return _(t,e)?"\n      ivec2 getOutputCoords() {\n        return ivec2(resultUV.yx * vec2("+e[0]+", "+e[1]+"));\n      }\n    ":1===t[1]?"\n      ivec2 getOutputCoords() {\n        ivec2 resTexRC = ivec2(resultUV.yx *\n                               vec2("+e[0]+", "+e[1]+"));\n        int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n        return ivec2(index, 0);\n      }\n    ":1===t[0]?"\n      ivec2 getOutputCoords() {\n        ivec2 resTexRC = ivec2(resultUV.yx *\n                               vec2("+e[0]+", "+e[1]+"));\n        int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n        return ivec2(0, index);\n      }\n    ":"\n    ivec2 getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n                             vec2("+e[0]+", "+e[1]+"));\n      int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n      int r = index / "+t[1]+";\n      int c = index - r * "+t[1]+";\n      return ivec2(r, c);\n    }\n  "}(t,e);case 3:return n=e,r=eo(["r","c","d"],t),"\n    ivec3 getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n                             vec2("+n[0]+", "+n[1]+"));\n      int index = resTexRC.x * "+n[1]+" + resTexRC.y;\n      "+r+"\n      return ivec3(r, c, d);\n    }\n  ";case 4:return function(t,e){var n=eo(["r","c","d","d2"],t);return"\n    ivec4 getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n        vec2("+e[0]+", "+e[1]+"));\n      int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n      "+n+"\n      return ivec4(r, c, d, d2);\n    }\n  "}(t,e);case 5:return function(t,e){var n=eo(["r","c","d","d2","d3"],t);return"\n    ivec5 getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx * vec2("+e[0]+",\n                             "+e[1]+"));\n\n      int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n\n      "+n+"\n\n      ivec5 outShape = ivec5(r, c, d, d2, d3);\n      return outShape;\n    }\n  "}(t,e);case 6:return function(t,e){var n=eo(["r","c","d","d2","d3","d4"],t);return"\n    ivec6 getOutputCoords() {\n      ivec2 resTexRC = ivec2(resultUV.yx *\n        vec2("+e[0]+", "+e[1]+"));\n      int index = resTexRC.x * "+e[1]+" + resTexRC.y;\n\n      "+n+"\n\n      ivec6 result = ivec6(r, c, d, d2, d3, d4);\n      return result;\n    }\n  "}(t,e);default:throw new Error(t.length+"-D output sampling is not yet supported")}var n,r}(e.logicalShape,c),i=function(t){return"\n    void setOutput(float val) {\n      "+t.output+" = vec4(val, 0, 0, 0);\n    }\n  "}(l)),r&&(f+=uo),[f,p,i,s,o,u,n].join("\n")}var oo="\nvec2 uvFromFlat(int texNumR, int texNumC, int index) {\n  int texR = index / texNumC;\n  int texC = index - texR * texNumC;\n  return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);\n}\nvec2 packedUVfrom1D(int texNumR, int texNumC, int index) {\n  int texelIndex = index / 2;\n  int texR = texelIndex / texNumC;\n  int texC = texelIndex - texR * texNumC;\n  return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);\n}\n",io="\nvec2 packedUVfrom2D(int texelsInLogicalRow, int texNumR,\n  int texNumC, int row, int col) {\n  int texelIndex = (row / 2) * texelsInLogicalRow + (col / 2);\n  int texR = texelIndex / texNumC;\n  int texC = texelIndex - texR * texNumC;\n  return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);\n}\n",so="\nvec2 packedUVfrom3D(int texNumR, int texNumC,\n    int texelsInBatch, int texelsInLogicalRow, int b,\n    int row, int col) {\n  int index = b * texelsInBatch + (row / 2) * texelsInLogicalRow + (col / 2);\n  int texR = index / texNumC;\n  int texC = index - texR * texNumC;\n  return (vec2(texC, texR) + halfCR) / vec2(texNumC, texNumR);\n}\n",uo="\n  float getChannel(vec4 frag, vec2 innerDims) {\n    vec2 modCoord = mod(innerDims, 2.);\n    return modCoord.x == 0. ?\n      (modCoord.y == 0. ? frag.r : frag.g) :\n      (modCoord.y == 0. ? frag.b : frag.a);\n  }\n  float getChannel(vec4 frag, int dim) {\n    float modCoord = mod(float(dim), 2.);\n    return modCoord == 0. ? frag.r : frag.g;\n  }\n";function co(t){return"offset"+t}function lo(t){var e=t.name,n=D(t.shapeInfo.logicalShape);return n<2?"return "+e+";":"\n    for (int i = 0; i < "+n+"; i++) {\n      if (i == index) {\n        return "+e+"[i];\n      }\n    }\n  "}function po(t){if(t<=1)return"int";if(2===t)return"ivec2";if(3===t)return"ivec3";if(4===t)return"ivec4";if(5===t)return"ivec5";if(6===t)return"ivec6";throw Error("GPU for rank "+t+" is not yet supported")}function fo(t,e){var n=JSON.parse(JSON.stringify(t));return n.shapeInfo.logicalShape=e,n}function ho(t,e){return e.map((function(e){return t[e]})).join(", ")}var mo=function(t,e,n,r){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,T(t.length>2,(function(){return"Packed arg"+(n.charAt(0).toUpperCase()+n.slice(1))+" supports only inputs with rank above 2."}));var a=t[t.length-1],o=Math.ceil(a/e);this.outputShape=t.slice(0,-1),o>1&&this.outputShape.push(o),r||this.variableNames.push("bestIndicesA");var i,s,u=this.outputShape,c=u.length,l=po(c),p=Za("coords",c);if(1===o){var f=po(s=c+1);i="\n        "+f+" sourceLocR = "+f+"("+p.join()+", 0);\n        ++"+p[c-1]+";\n        "+f+" sourceLocG = "+f+"("+p.join()+", 0);\n        ++"+p[c-2]+";\n        "+f+" sourceLocA = "+f+"("+p.join()+", 0);\n        --"+p[c-1]+";\n        "+f+" sourceLocB = "+f+"("+p.join()+", 0);\n        --"+p[c-2]+";"}else s=c,i="\n        "+l+" sourceLocR = coords;\n        ++"+p[c-1]+";\n        "+l+" sourceLocG = coords;\n        ++"+p[c-2]+";\n        "+l+" sourceLocA = coords;\n        --"+p[c-1]+";\n        "+l+" sourceLocB = coords;\n        --"+p[c-2]+";";var d=["x","y","z","w","u","v"].slice(0,s),h="."+d[s-1],m=d.map((function(t){return"int "+t})),v=Za("sourceLocR",s-1).concat("inIdx.r"),g=Za("sourceLocG",s-1).concat("inIdx.g"),y=Za("sourceLocB",s-1).concat("inIdx.b"),x=Za("sourceLocA",s-1).concat("inIdx.a"),b="max"===n?"greaterThan":"lessThan",w=r?"":"\n          inIdx = round(vec4(getBestIndicesAChannel("+v.join()+"),\n                             getBestIndicesAChannel("+g.join()+"),\n                             getBestIndicesAChannel("+y.join()+"),\n                             getBestIndicesAChannel("+x.join()+")));",C="vec4(\n            getAChannel("+v.join()+"),\n            hasNextCol ? getAChannel("+g.join()+") : 0.,\n            hasNextRow ? getAChannel("+y.join()+") : 0.,\n            hasNextRow && hasNextCol ? getAChannel("+x.join()+") : 0.)",E=r?"":"\n      float getBestIndicesAChannel("+m.join()+") {\n        return getChannel(getBestIndicesA("+d.join()+"),\n                                          vec2("+d.slice(-2).join()+"));\n      }";this.userCode="\n      float getAChannel("+m.join()+") {\n        return getChannel(getA("+d.join()+"),\n                               vec2("+d.slice(-2).join()+"));\n      }\n      "+E+"\n      void main() {\n        "+l+" coords = getOutputCoords();\n        bool hasNextCol = "+p[c-1]+" < "+(u[c-1]-1)+";\n        bool hasNextRow = "+p[c-2]+" < "+(u[c-2]-1)+";\n        "+i+"\n        ivec4 srcIdx = ivec4(sourceLocR"+h+", sourceLocG"+h+",\n          sourceLocB"+h+", sourceLocA"+h+") * "+e+";\n        ivec4 inIdx = srcIdx;\n        vec4 bestIndex = vec4(inIdx);\n        vec4 bestValue = "+C+";\n\n        for (int i = 0; i < "+e+"; i++) {\n          inIdx = srcIdx;\n          "+w+"\n          vec4 candidate = "+C+";\n          bvec4 nan = isnan(candidate);\n          bvec4 replace = bvec4(\n            vec4("+b+"(candidate, bestValue)) * (vec4(1.0) - vec4(nan)));\n\n          bestValue = vec4(replace.x  ? candidate.x : bestValue.x,\n                           replace.y  ? candidate.y : bestValue.y,\n                           replace.z  ? candidate.z : bestValue.z,\n                           replace.w  ? candidate.w : bestValue.w);\n          bestIndex = mix(bestIndex, vec4(inIdx), vec4(replace));\n          srcIdx++;\n        }\n        setOutput(bestIndex);\n      }\n    "},vo=function(t){this.variableNames=["dy"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,a=t.strideWidth,o=t.dilationHeight,i=t.dilationWidth,s=t.effectiveFilterHeight,u=t.effectiveFilterWidth,c=s-1-t.padInfo.top,l=u-1-t.padInfo.left,p=1/(e*n);this.userCode="\n      const ivec2 pads = ivec2("+c+", "+l+");\n      const float avgMultiplier = float("+p+");\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int d = coords[3];\n\n        ivec2 dyRCCorner = coords.yz - pads;\n        int dyRCorner = dyRCCorner.x;\n        int dyCCorner = dyRCCorner.y;\n\n        // Convolve dy(?, ?, d) with pos mask(:, :, d) to get dx(xR, xC, d).\n        // ? = to be determined. : = across all values in that axis.\n        float dotProd = 0.0;\n        for (int wR = 0; wR < "+s+";\n            wR += "+o+") {\n          float dyR = float(dyRCorner + wR) / "+r+".0;\n\n          if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n            continue;\n          }\n          int idyR = int(dyR);\n\n          for (int wC = 0; wC < "+u+";\n            wC+= "+i+") {\n            float dyC = float(dyCCorner + wC) / "+a+".0;\n\n            if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n                fract(dyC) > 0.0) {\n              continue;\n            }\n            int idyC = int(dyC);\n\n            float dyValue = getDy(b, idyR, idyC, d);\n\n            dotProd += dyValue * avgMultiplier;\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},go=function(t){this.variableNames=["dy"],this.outputShape=t.inShape;var e=t.filterDepth,n=t.filterHeight,r=t.filterWidth,a=t.strideDepth,o=t.strideHeight,i=t.strideWidth,s=t.dilationDepth,u=t.dilationHeight,c=t.dilationWidth,l=t.effectiveFilterDepth,p=t.effectiveFilterHeight,f=t.effectiveFilterWidth,d=l-1-t.padInfo.front,h=p-1-t.padInfo.top,m=f-1-t.padInfo.left,v=1/(e*n*r);this.userCode="\n      const ivec3 pads = ivec3("+d+", "+h+", "+m+");\n      const float avgMultiplier = float("+v+");\n\n      void main() {\n        ivec5 coords = getOutputCoords();\n        int batch = coords.x;\n        int ch = coords.u;\n\n        ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;\n        int dyDCorner = dyCorner.x;\n        int dyRCorner = dyCorner.y;\n        int dyCCorner = dyCorner.z;\n\n        // Convolve dy(?, ?, ?, d) with pos mask(:, :, :, ch) to get\n        // dx(xD, xR, xC, ch).\n        // ? = to be determined. : = across all values in that axis.\n        float dotProd = 0.0;\n\n        for (int wD = 0; wD < "+l+";\n            wD += "+s+") {\n          float dyD = float(dyDCorner + wD) / "+a+".0;\n\n          if (dyD < 0.0 || dyD >= "+t.outDepth+".0 || fract(dyD) > 0.0) {\n            continue;\n          }\n          int idyD = int(dyD);\n\n          for (int wR = 0; wR < "+p+";\n              wR += "+u+") {\n            float dyR = float(dyRCorner + wR) / "+o+".0;\n\n            if (dyR < 0.0 || dyR >= "+t.outHeight+".0 ||\n                fract(dyR) > 0.0) {\n              continue;\n            }\n            int idyR = int(dyR);\n\n            for (int wC = 0; wC < "+f+";\n                wC += "+c+") {\n              float dyC = float(dyCCorner + wC) / "+i+".0;\n\n              if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n                  fract(dyC) > 0.0) {\n                continue;\n              }\n              int idyC = int(dyC);\n\n              float dyValue = getDy(batch, idyD, idyR, idyC, ch);\n\n              dotProd += dyValue * avgMultiplier;\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},yo=function(t,e,n,r,a,o){this.outputShape=[],this.variableNames=["x","mean","variance"],va(t,e),va(t,n);var i="0.0";null!=r&&(va(t,r),this.variableNames.push("offset"),i="getOffsetAtOutCoords()");var s="1.0";null!=a&&(va(t,a),this.variableNames.push("scale"),s="getScaleAtOutCoords()"),this.outputShape=t,this.userCode="\n      void main() {\n        float x = getXAtOutCoords();\n        float mean = getMeanAtOutCoords();\n        float variance = getVarianceAtOutCoords();\n        float offset = "+i+";\n        float scale = "+s+";\n        float inv = scale * inversesqrt(variance + float("+o+"));\n        setOutput(dot(vec3(x, -mean, offset), vec3(inv, inv, 1)));\n      }\n    "},xo=function(t,e,n,r,a,o){this.packedInputs=!0,this.packedOutput=!0,this.variableNames=["x","mean","variance"],va(t,e),va(t,n);var i="vec4(0.0)";null!=r&&(va(t,r),this.variableNames.push("offset"),i="getOffsetAtOutCoords()");var s="vec4(1.0)";null!=a&&(va(t,a),this.variableNames.push("scale"),s="getScaleAtOutCoords()"),this.outputShape=t,this.userCode="\n      void main() {\n        vec4 offset = "+i+";\n        vec4 scale = "+s+";\n\n        vec4 x = getXAtOutCoords();\n        vec4 mean = getMeanAtOutCoords();\n        vec4 variance = getVarianceAtOutCoords();\n\n        vec4 inv = scale * inversesqrt(variance + vec4("+o+"));\n\n        setOutput((x - mean) * inv + offset);\n      }\n    "},bo=function(t,e,n){this.variableNames=["AReal","AImag","BReal","BImag"],this.outputShape=va(e,n),this.userCode="\n      float binaryOpComplex(\n          float areal, float aimag, float breal, float bimag) {\n        "+t+"\n      }\n\n      void main() {\n        float areal = getARealAtOutCoords();\n        float aimag = getAImagAtOutCoords();\n        float breal = getBRealAtOutCoords();\n        float bimag = getBImagAtOutCoords();\n        setOutput(binaryOpComplex(areal, aimag, breal, bimag));\n      }\n    "},wo="return a + b;",Co="return a - b;",Eo="return a * b;",So="return (a < 0.) ? b * a : a;",No=function(t,e,n){this.variableNames=["A","B"],this.outputShape=va(e,n),this.userCode="\n      float binaryOperation(float a, float b) {\n        "+t+"\n      }\n\n      void main() {\n        float a = getAAtOutCoords();\n        float b = getBAtOutCoords();\n        setOutput(binaryOperation(a, b));\n      }\n    "},Io="\n  vec4 aLessThanZero = vec4(lessThan(a, vec4(0.)));\n  return (aLessThanZero * (b * a)) + ((vec4(1.0) - aLessThanZero) * a);\n",Ro=function(t,e,n,r){void 0===r&&(r=!1),this.variableNames=["A","B"],this.supportsBroadcasting=!0,this.packedInputs=!0,this.packedOutput=!0,this.outputShape=va(e,n);var a=this.outputShape.length,o="";if(r)if(0===a||1===D(this.outputShape))o="\n          result.y = 0.;\n          result.z = 0.;\n          result.w = 0.;\n        ";else if(o="\n          "+po(a)+" coords = getOutputCoords();\n        ",1===a)o+="\n            result.y = (coords + 1) >= "+this.outputShape[0]+" ? 0. : result.y;\n            result.z = 0.;\n            result.w = 0.;\n          ";else{var i=Za("coords",a);o+="\n            bool nextRowOutOfBounds =\n              ("+i[a-2]+" + 1) >= "+this.outputShape[a-2]+";\n            bool nextColOutOfBounds =\n              ("+i[a-1]+" + 1) >= "+this.outputShape[a-1]+";\n            result.y = nextColOutOfBounds ? 0. : result.y;\n            result.z = nextRowOutOfBounds ? 0. : result.z;\n            result.w = nextColOutOfBounds || nextRowOutOfBounds ? 0. : result.w;\n          "}this.userCode="\n      vec4 binaryOperation(vec4 a, vec4 b) {\n        "+t+"\n      }\n\n      void main() {\n        vec4 a = getAAtOutCoords();\n        vec4 b = getBAtOutCoords();\n\n        vec4 result = binaryOperation(a, b);\n        "+o+"\n\n        setOutput(result);\n      }\n    "},To=function(){function t(t){this.variableNames=["A"],this.outputShape=t,this.userCode="\n      uniform float minVal;\n      uniform float maxVal;\n\n      void main() {\n        float value = getAAtOutCoords();\n        if (isnan(value)) {\n          setOutput(value);\n          return;\n        }\n\n        setOutput(clamp(value, minVal, maxVal));\n      }\n    "}return t.prototype.getCustomSetupFunc=function(t,e){var n=this;return function(r,a){null==n.minLoc&&(n.minLoc=r.getUniformLocationNoThrow(a,"minVal"),n.maxLoc=r.getUniformLocationNoThrow(a,"maxVal")),r.gl.uniform1f(n.minLoc,t),r.gl.uniform1f(n.maxLoc,e)}},t}(),ko=function(){function t(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.userCode="\n      uniform float minVal;\n      uniform float maxVal;\n\n      void main() {\n        vec4 value = getAAtOutCoords();\n\n        if (any(isnan(value))) {\n          setOutput(value);\n          return;\n        }\n\n        setOutput(clamp(value, vec4(minVal), vec4(maxVal)));\n      }\n    "}return t.prototype.getCustomSetupFunc=function(t,e){var n=this;return function(r,a){null==n.minLoc&&(n.minLoc=r.getUniformLocationNoThrow(a,"minVal"),n.maxLoc=r.getUniformLocationNoThrow(a,"maxVal")),r.gl.uniform1f(n.minLoc,t),r.gl.uniform1f(n.maxLoc,e)}},t}(),Ao=function(t){this.variableNames=["real","imag"],this.outputShape=t,this.userCode="\n      void main() {\n        float re = abs(getRealAtOutCoords());\n        float im = abs(getImagAtOutCoords());\n        float mx = max(re, im);\n\n        // sadly the length function in glsl is not underflow-safe\n        // (at least not on Intel GPUs). So the safe solution is\n        // to ensure underflow-safety in all cases.\n        setOutput(\n          mx == 0.0 ? 0.0 : mx * length(vec2(1, min(re, im)/mx))\n        );\n      }\n    "},Oo=function(t){this.outputShape=[],this.outputShape=Nn(t,1),this.variableNames=t.map((function(t,e){return"T"+e}));var e=new Array(t.length-1);e[0]=t[0][1];for(var n=1;n<e.length;n++)e[n]=e[n-1]+t[n][1];var r=["if (yC < "+e[0]+") setOutput(getT0(yR, yC));"];for(n=1;n<e.length;n++){var a=e[n-1];r.push("else if (yC < "+e[n]+") setOutput(getT"+n+"(yR, yC-"+a+"));")}var o=e.length,i=e[e.length-1];r.push("else setOutput(getT"+o+"(yR, yC-"+i+"));"),this.userCode="\n      void main() {\n        ivec2 coords = getOutputCoords();\n        int yR = coords.x;\n        int yC = coords.y;\n\n        "+r.join("\n        ")+"\n      }\n    "},Do=function(t,e){this.packedInputs=!0,this.packedOutput=!0,this.outputShape=[],this.outputShape=Nn(t,e);var n=this.outputShape,r=n.length,a=po(r),o=Za("coords",r),i=["x","y","z","w","u","v"].slice(0,r);this.variableNames=t.map((function(t,e){return"T"+e}));var s=new Array(t.length-1);s[0]=t[0][e];for(var u=1;u<s.length;u++)s[u]=s[u-1]+t[u][e];var c=i[e],l=i.slice(-2),p=i.join(),f="if ("+c+" < "+s[0]+") {\n        return getChannel(\n            getT0("+p+"), vec2("+l.join()+"));\n        }";for(u=1;u<s.length;u++){var d=s[u-1];f+="\n        if ("+c+" < "+s[u]+"  && "+c+" >= "+s[u-1]+") {\n          return getChannel(\n            getT"+u+"("+_o(i,c,d)+"),\n            vec2("+_o(l,c,d)+"));\n        }"}var h=s.length,m=s[s.length-1];f+="\n        return getChannel(\n          getT"+h+"("+_o(i,c,m)+"),\n          vec2("+_o(l,c,m)+"));",this.userCode="\n      float getValue("+i.map((function(t){return"int "+t}))+") {\n        "+f+"\n      }\n\n      void main() {\n        "+a+" coords = getOutputCoords();\n        vec4 result = vec4(getValue("+o+"), 0., 0., 0.);\n\n        "+o[r-1]+" = "+o[r-1]+" + 1;\n        if ("+o[r-1]+" < "+n[r-1]+") {\n          result.g = getValue("+o+");\n        }\n\n        "+o[r-2]+" = "+o[r-2]+" + 1;\n        if ("+o[r-2]+" < "+n[r-2]+") {\n          result.a = getValue("+o+");\n        }\n\n        "+o[r-1]+" = "+o[r-1]+" - 1;\n        if ("+o[r-2]+" < "+n[r-2]+" &&\n            "+o[r-1]+" < "+n[r-1]+") {\n          result.b = getValue("+o+");\n        }\n        setOutput(result);\n      }\n    "};function _o(t,e,n){var r=t.indexOf(e);return t.map((function(t,e){return e===r?t+" - "+n:t})).join()}var Fo=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideHeight,n=t.strideWidth,r=t.padInfo.top,a=t.padInfo.left,o="channelsLast"===t.dataFormat;this.userCode="\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int wR = coords.x;\n        int wC = coords.y;\n        int d1 = coords.z;\n        int d2 = coords.w;\n\n        // Convolve x(?, ?, d1) with dy(:, :, d2) to get dw(wR, wC, d1, d2).\n        // ? = to be determined. : = across all values in that axis.\n        float dotProd = 0.0;\n\n        for (int b = 0; b < "+t.batchSize+"; b++) {\n          for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n            int xR = wR + yR * "+e+" - "+r+";\n\n            if (xR < 0 || xR >= "+t.inHeight+") {\n              continue;\n            }\n\n            for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n              int xC = wC + yC * "+n+" - "+a+";\n\n              if (xC < 0 || xC >= "+t.inWidth+") {\n                continue;\n              }\n\n              if ("+o+") {\n                float dyValue = getDy(b, yR, yC, d2);\n                float xValue = getX(b, xR, xC, d1);\n                dotProd += (xValue * dyValue);\n              } else {\n                float dyValue = getDy(b, d2, yR, yC);\n                float xValue = getX(b, d1, xR, xC);\n                dotProd += (xValue * dyValue);\n              }\n\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Mo=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,a=t.strideWidth,o="channelsLast"===t.dataFormat,i=e-1-t.padInfo.top,s=n-1-t.padInfo.left,u=o?1:2,c=o?2:3,l=o?3:1;this.userCode="\n      const ivec2 pads = ivec2("+i+", "+s+");\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int batch = coords[0];\n        int d1 = coords["+l+"];\n\n        ivec2 dyCorner = ivec2(coords["+u+"], coords["+c+"]) - pads;\n        int dyRCorner = dyCorner.x;\n        int dyCCorner = dyCorner.y;\n\n        // Convolve dy(?, ?, d2) with w(:, :, d1, d2) to compute dx(xR, xC, d1).\n        // ? = to be determined. : = across all values in that axis.\n        float dotProd = 0.0;\n        for (int wR = 0; wR < "+e+"; wR++) {\n          float dyR = float(dyRCorner + wR) / "+r+".0;\n\n          if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n            continue;\n          }\n          int idyR = int(dyR);\n\n          int wRPerm = "+e+" - 1 - wR;\n\n          for (int wC = 0; wC < "+n+"; wC++) {\n            float dyC = float(dyCCorner + wC) / "+a+".0;\n\n            if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n                fract(dyC) > 0.0) {\n              continue;\n            }\n            int idyC = int(dyC);\n\n            int wCPerm = "+n+" - 1 - wC;\n\n            for (int d2 = 0; d2 < "+t.outChannels+"; d2++) {\n\n              if ("+o+") {\n                float xValue = getDy(batch, idyR, idyC, d2);\n                float wValue = getW(wRPerm, wCPerm, d1, d2);\n                dotProd += xValue * wValue;\n              } else {\n                float xValue = getDy(batch, d2, idyR, idyC);\n                float wValue = getW(wRPerm, wCPerm, d1, d2);\n                dotProd += xValue * wValue;\n              }\n\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Bo=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideDepth,n=t.strideHeight,r=t.strideWidth,a=t.padInfo.front,o=t.padInfo.top,i=t.padInfo.left;this.userCode="\n      void main() {\n        ivec5 coords = getOutputCoords();\n        int wF = coords.x;\n        int wR = coords.y;\n        int wC = coords.z;\n        int d1 = coords.w;\n        int d2 = coords.u;\n\n        float dotProd = 0.0;\n\n        for (int b = 0; b < "+t.batchSize+"; b++) {\n          for (int yF = 0; yF < "+t.outDepth+"; yF++) {\n            int xF = wF + yF * "+e+" - "+a+";\n\n            if (xF < 0 || xF >= "+t.inDepth+") {\n              continue;\n            }\n\n            for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n              int xR = wR + yR * "+n+" - "+o+";\n\n              if (xR < 0 || xR >= "+t.inHeight+") {\n                continue;\n              }\n\n              for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n                int xC = wC + yC * "+r+" - "+i+";\n\n                if (xC < 0 || xC >= "+t.inWidth+") {\n                  continue;\n                }\n\n                float dyValue = getDy(b, yF, yR, yC, d2);\n                float xValue = getX(b, xF, xR, xC, d1);\n                dotProd += (xValue * dyValue);\n              }\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Po=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterDepth,n=t.filterHeight,r=t.filterWidth,a=t.strideDepth,o=t.strideHeight,i=t.strideWidth,s=e-1-t.padInfo.front,u=n-1-t.padInfo.top,c=r-1-t.padInfo.left;this.userCode="\n      const ivec3 pads = ivec3("+s+", "+u+", "+c+");\n\n      void main() {\n        ivec5 coords = getOutputCoords();\n        int batch = coords.x;\n        int d1 = coords.u;\n\n\n        ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;\n        int dyFCorner = dyCorner.x;\n        int dyRCorner = dyCorner.y;\n        int dyCCorner = dyCorner.z;\n\n        float dotProd = 0.0;\n        for (int wF = 0; wF < "+e+"; wF++) {\n          float dyF = float(dyFCorner + wF) / "+a+".0;\n\n          if (dyF < 0.0 || dyF >= "+t.outDepth+".0 || fract(dyF) > 0.0) {\n            continue;\n          }\n          int idyF = int(dyF);\n\n          int wFPerm = "+e+" - 1 - wF;\n\n          for (int wR = 0; wR < "+n+"; wR++) {\n            float dyR = float(dyRCorner + wR) / "+o+".0;\n\n            if (dyR < 0.0 || dyR >= "+t.outHeight+".0 ||\n              fract(dyR) > 0.0) {\n              continue;\n            }\n            int idyR = int(dyR);\n\n            int wRPerm = "+n+" - 1 - wR;\n\n            for (int wC = 0; wC < "+r+"; wC++) {\n              float dyC = float(dyCCorner + wC) / "+i+".0;\n\n              if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n                  fract(dyC) > 0.0) {\n                continue;\n              }\n              int idyC = int(dyC);\n\n              int wCPerm = "+r+" - 1 - wC;\n\n              for (int d2 = 0; d2 < "+t.outChannels+"; d2++) {\n                float xValue = getDy(batch, idyF, idyR, idyC, d2);\n                float wValue = getW(wFPerm, wRPerm, wCPerm, d1, d2);\n                dotProd += xValue * wValue;\n              }\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Lo=function(t){this.variableNames=["x","dy"],this.outputShape=t.filterShape;var e=t.strideHeight,n=t.strideWidth,r=t.padInfo.top,a=t.padInfo.left,o=t.outChannels/t.inChannels;this.userCode="\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int wR = coords.x;\n        int wC = coords.y;\n        int d1 = coords.z;\n        int dm = coords.w;\n        int d2 = d1 * "+o+" + dm;\n\n        float dotProd = 0.0;\n\n        // TO DO: Vec4 over the batch size\n        for (int b = 0; b < "+t.batchSize+"; b++) {\n          for (int yR = 0; yR < "+t.outHeight+"; yR++) {\n            int xR = wR + yR * "+e+" - "+r+";\n\n            if (xR < 0 || xR >= "+t.inHeight+") {\n              continue;\n            }\n\n            for (int yC = 0; yC < "+t.outWidth+"; yC++) {\n              int xC = wC + yC * "+n+" - "+a+";\n\n              if (xC < 0 || xC >= "+t.inWidth+") {\n                continue;\n              }\n\n              float dyValue = getDy(b, yR, yC, d2);\n              float xValue = getX(b, xR, xC, d1);\n              dotProd += (xValue * dyValue);\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Vo=function(t){this.variableNames=["dy","W"],this.outputShape=t.inShape;var e=t.filterHeight,n=t.filterWidth,r=t.strideHeight,a=t.strideWidth,o=e-1-t.padInfo.top,i=n-1-t.padInfo.left,s=t.outChannels/t.inChannels;this.userCode="\n      const ivec2 pads = ivec2("+o+", "+i+");\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int batch = coords[0];\n        int d1 = coords[3];\n        ivec2 dyCorner = coords.yz - pads;\n        int dyRCorner = dyCorner.x;\n        int dyCCorner = dyCorner.y;\n\n        float dotProd = 0.0;\n\n        for (int wR = 0; wR < "+e+"; wR++) {\n          float dyR = float(dyRCorner + wR) / "+r+".0;\n\n          if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n            continue;\n          }\n          int idyR = int(dyR);\n\n          int wRPerm = "+e+" - 1 - wR;\n\n          for (int wC = 0; wC < "+n+"; wC++) {\n            float dyC = float(dyCCorner + wC) / "+a+".0;\n\n            if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n                fract(dyC) > 0.0) {\n              continue;\n            }\n            int idyC = int(dyC);\n\n            int wCPerm = "+n+" - 1 - wC;\n\n            // TO DO: Vec4 over the channelMul\n            for (int dm = 0; dm < "+s+"; dm++) {\n              int d2 = d1 * "+s+" + dm;\n              float xValue = getDy(batch, idyR, idyC, d2);\n              float wValue = getW(wRPerm, wCPerm, d1, dm);\n              dotProd += xValue * wValue;\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Wo=function(t,e,n,r){void 0===e&&(e=!1),void 0===n&&(n=null),void 0===r&&(r=!1),this.variableNames=["x","W"],this.outputShape=t.outShape;var a=t.padInfo.top,o=t.padInfo.left,i=t.strideHeight,s=t.strideWidth,u=t.dilationHeight,c=t.dilationWidth,l=t.filterHeight,p=t.filterWidth,f=4*Math.floor(t.inChannels/4),d=t.inChannels%4,h="channelsLast"===t.dataFormat,m=h?1:2,v=h?2:3,g=h?3:1,y="",x="";n&&(y=r?"float activation(float a) {\n          float b = getPreluActivationWeightsAtOutCoords();\n          "+n+"\n        }":"\n          float activation(float x) {\n            "+n+"\n          }\n        ",x="result = activation(result);");var b=e?"result += getBiasAtOutCoords();":"";e&&this.variableNames.push("bias"),r&&this.variableNames.push("preluActivationWeights"),this.userCode="\n      "+y+"\n\n      const ivec2 strides = ivec2("+i+", "+s+");\n      const ivec2 pads = ivec2("+a+", "+o+");\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int batch = coords[0];\n        int d2 = coords["+g+"];\n\n        ivec2 xRCCorner =\n            ivec2(coords["+m+"], coords["+v+"]) * strides - pads;\n        int xRCorner = xRCCorner.x;\n        int xCCorner = xRCCorner.y;\n\n        // Convolve x(?, ?, d1) with w(:, :, d1, d2) to get y(yR, yC, d2).\n        // ? = to be determined. : = across all values in that axis.\n        float dotProd = 0.0;\n        for (int wR = 0; wR < "+l+"; wR++) {\n          int xR = xRCorner + wR * "+u+";\n\n          if (xR < 0 || xR >= "+t.inHeight+") {\n            continue;\n          }\n\n          for (int wC = 0; wC < "+p+"; wC++) {\n            int xC = xCCorner + wC * "+c+";\n\n            if (xC < 0 || xC >= "+t.inWidth+") {\n              continue;\n            }\n\n            for (int d1 = 0; d1 < "+f+"; d1 += 4) {\n              vec4 wValues = vec4(\n                getW(wR, wC, d1, d2),\n                getW(wR, wC, d1 + 1, d2),\n                getW(wR, wC, d1 + 2, d2),\n                getW(wR, wC, d1 + 3, d2)\n              );\n\n              if ("+h+") {\n                vec4 xValues = vec4(\n                  getX(batch, xR, xC, d1),\n                  getX(batch, xR, xC, d1 + 1),\n                  getX(batch, xR, xC, d1 + 2),\n                  getX(batch, xR, xC, d1 + 3)\n                );\n                dotProd += dot(xValues, wValues);\n              } else {\n                vec4 xValues = vec4(\n                  getX(batch, d1, xR, xC),\n                  getX(batch, d1 + 1, xR, xC),\n                  getX(batch, d1 + 2, xR, xC),\n                  getX(batch, d1 + 3, xR, xC)\n                );\n                dotProd += dot(xValues, wValues);\n              }\n            }\n\n            if ("+(1===d)+") {\n\n              if ("+h+") {\n                dotProd +=\n                    getX(batch, xR, xC, "+f+") *\n                    getW(wR, wC, "+f+", d2);\n              } else {\n                dotProd +=\n                    getX(batch, "+f+", xR, xC) *\n                    getW(wR, wC, "+f+", d2);\n              }\n\n            } else if ("+(2===d)+") {\n              vec2 wValues = vec2(\n                getW(wR, wC, "+f+", d2),\n                getW(wR, wC, "+f+" + 1, d2)\n              );\n\n              if ("+h+") {\n                vec2 xValues = vec2(\n                  getX(batch, xR, xC, "+f+"),\n                  getX(batch, xR, xC, "+f+" + 1)\n                );\n                dotProd += dot(xValues, wValues);\n              } else {\n                vec2 xValues = vec2(\n                  getX(batch, "+f+", xR, xC),\n                  getX(batch, "+f+" + 1, xR, xC)\n                );\n                dotProd += dot(xValues, wValues);\n              }\n\n            } else if ("+(3===d)+") {\n              vec3 wValues = vec3(\n                getW(wR, wC, "+f+", d2),\n                getW(wR, wC, "+f+" + 1, d2),\n                getW(wR, wC, "+f+" + 2, d2)\n              );\n\n              if ("+h+") {\n                vec3 xValues = vec3(\n                  getX(batch, xR, xC, "+f+"),\n                  getX(batch, xR, xC, "+f+" + 1),\n                  getX(batch, xR, xC, "+f+" + 2)\n                );\n                dotProd += dot(xValues, wValues);\n              } else {\n                vec3 xValues = vec3(\n                  getX(batch, "+f+", xR, xC),\n                  getX(batch, "+f+" + 1, xR, xC),\n                  getX(batch, "+f+" + 2, xR, xC)\n                );\n                dotProd += dot(xValues, wValues);\n              }\n\n            }\n          }\n        }\n\n        float result = dotProd;\n        "+b+"\n        "+x+"\n        setOutput(result);\n      }\n    "},zo=function(t){this.variableNames=["x","W"],this.outputShape=t.outShape;var e=t.padInfo.front,n=t.padInfo.top,r=t.padInfo.left,a=t.strideDepth,o=t.strideHeight,i=t.strideWidth,s=t.dilationDepth,u=t.dilationHeight,c=t.dilationWidth,l=t.filterDepth,p=t.filterHeight,f=t.filterWidth,d=4*Math.floor(t.inChannels/4),h=t.inChannels%4;this.userCode="\n      const ivec3 strides = ivec3("+a+", "+o+", "+i+");\n      const ivec3 pads = ivec3("+e+", "+n+", "+r+");\n\n      void main() {\n        ivec5 coords = getOutputCoords();\n        int batch = coords.x;\n        int d2 = coords.u;\n\n        ivec3 xFRCCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;\n        int xFCorner = xFRCCorner.x;\n        int xRCorner = xFRCCorner.y;\n        int xCCorner = xFRCCorner.z;\n\n        // Convolve x(?, ?, ?, d1) with w(:, :, :, d1, d2) to get\n        // y(yF, yR, yC, d2). ? = to be determined. : = across all\n        // values in that axis.\n        float dotProd = 0.0;\n        for (int wF = 0; wF < "+l+"; wF++) {\n          int xF = xFCorner + wF * "+s+";\n\n          if (xF < 0 || xF >= "+t.inDepth+") {\n            continue;\n          }\n\n          for (int wR = 0; wR < "+p+"; wR++) {\n            int xR = xRCorner + wR * "+u+";\n\n            if (xR < 0 || xR >= "+t.inHeight+") {\n              continue;\n            }\n\n            for (int wC = 0; wC < "+f+"; wC++) {\n              int xC = xCCorner + wC * "+c+";\n\n              if (xC < 0 || xC >= "+t.inWidth+") {\n                continue;\n              }\n\n              for (int d1 = 0; d1 < "+d+"; d1 += 4) {\n                vec4 xValues = vec4(\n                  getX(batch, xF, xR, xC, d1),\n                  getX(batch, xF, xR, xC, d1 + 1),\n                  getX(batch, xF, xR, xC, d1 + 2),\n                  getX(batch, xF, xR, xC, d1 + 3)\n                );\n                vec4 wValues = vec4(\n                  getW(wF, wR, wC, d1, d2),\n                  getW(wF, wR, wC, d1 + 1, d2),\n                  getW(wF, wR, wC, d1 + 2, d2),\n                  getW(wF, wR, wC, d1 + 3, d2)\n                );\n\n                dotProd += dot(xValues, wValues);\n              }\n\n              if ("+(1===h)+") {\n                dotProd +=\n                  getX(batch, xF, xR, xC, "+d+") *\n                  getW(wF, wR, wC, "+d+", d2);\n              } else if ("+(2===h)+") {\n                vec2 xValues = vec2(\n                  getX(batch, xF, xR, xC, "+d+"),\n                  getX(batch, xF, xR, xC, "+d+" + 1)\n                );\n                vec2 wValues = vec2(\n                  getW(wF, wR, wC, "+d+", d2),\n                  getW(wF, wR, wC, "+d+" + 1, d2)\n                );\n                dotProd += dot(xValues, wValues);\n              } else if ("+(3===h)+") {\n                vec3 xValues = vec3(\n                  getX(batch, xF, xR, xC, "+d+"),\n                  getX(batch, xF, xR, xC, "+d+" + 1),\n                  getX(batch, xF, xR, xC, "+d+" + 2)\n                );\n                vec3 wValues = vec3(\n                  getW(wF, wR, wC, "+d+", d2),\n                  getW(wF, wR, wC, "+d+" + 1, d2),\n                  getW(wF, wR, wC, "+d+" + 2, d2)\n                );\n                dotProd += dot(xValues, wValues);\n              }\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Uo=function(t,e,n,r){void 0===e&&(e=!1),void 0===n&&(n=null),void 0===r&&(r=!1),this.variableNames=["x","W"],this.outputShape=t.outShape;var a=t.inHeight,o=t.inWidth,i=t.padInfo.top,s=t.padInfo.left,u=t.strideHeight,c=t.strideWidth,l=t.dilationHeight,p=t.dilationWidth,f=t.filterHeight,d=t.filterWidth,h=t.outChannels/t.inChannels,m="",v="";n&&(m=r?"float activation(float a) {\n          float b = getPreluActivationWeightsAtOutCoords();\n          "+n+"\n        }":"\n          float activation(float x) {\n            "+n+"\n          }\n        ",v="result = activation(result);");var g=e?"result += getBiasAtOutCoords();":"";e&&this.variableNames.push("bias"),r&&this.variableNames.push("preluActivationWeights"),this.userCode="\n      "+m+"\n\n      const ivec2 strides = ivec2("+u+", "+c+");\n      const ivec2 pads = ivec2("+i+", "+s+");\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int batch = coords.x;\n        ivec2 xRCCorner = coords.yz * strides - pads;\n        int d2 = coords.w;\n        int d1 = d2 / "+h+";\n        int q = d2 - d1 * "+h+";\n\n        int xRCorner = xRCCorner.x;\n        int xCCorner = xRCCorner.y;\n\n        // Convolve x(?, ?, d1) with w(:, :, d1, q) to get y(yR, yC, d2).\n        // ? = to be determined. : = across all values in that axis.\n        float dotProd = 0.0;\n        // TO DO(dsmilkov): Flatten the two for loops and vec4 the operations.\n        for (int wR = 0; wR < "+f+"; wR++) {\n          int xR = xRCorner + wR * "+l+";\n\n          if (xR < 0 || xR >= "+a+") {\n            continue;\n          }\n\n          for (int wC = 0; wC < "+d+"; wC++) {\n            int xC = xCCorner + wC * "+p+";\n\n            if (xC < 0 || xC >= "+o+") {\n              continue;\n            }\n\n            float xVal = getX(batch, xR, xC, d1);\n            float wVal = getW(wR, wC, d1, q);\n            dotProd += xVal * wVal;\n          }\n        }\n\n        float result = dotProd;\n        "+g+"\n        "+v+"\n        setOutput(result);\n      }\n    "},jo=function(t,e,n,r){void 0===e&&(e=!1),void 0===n&&(n=null),void 0===r&&(r=!1),this.variableNames=["x","W"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t.outShape;for(var a=t.inHeight,o=t.inWidth,i=t.padInfo.top,s=t.padInfo.left,u=t.strideHeight,c=t.strideWidth,l=t.dilationHeight,p=t.dilationWidth,f=t.filterHeight,d=t.filterWidth,h=d,m="int xR; int xC; int xCOffset;",v=0;v<f;v++)for(var g=0;g<d;g++)m+="\n          vec4 xTexelR"+v+"C"+2*g+" = vec4(0.);\n          vec4 wR"+v+"C"+g+" = vec4(0.);\n          vec4 xR"+v+"C"+g+" = vec4(0.);";for(v=0;v<f;v++)for(var y=0;y<h;y++){if(m+="\n          xR = xRCorner + "+v*l+";\n          xC = xCCorner + "+(g=2*y)*p+";\n        ",1===c){if(g<d&&(m+=s%2==1?"\n                xCOffset = xC + 1;\n                if(xR >= 0 && xR < "+a+" && xCOffset >= 0 && xCOffset < "+o+") {\n                  xTexelR"+v+"C"+g+" = getX(batch, xR, xCOffset, d1);\n                } else {\n                  xTexelR"+v+"C"+g+" = vec4(0.);\n                }\n\n                xCOffset = xC + 1 - 2;\n                if(xR >= 0 && xR < "+a+" && xCOffset >= 0 && xCOffset < "+o+") {\n                  vec4 previous = getX(batch, xR, xCOffset, d1);\n                  xR"+v+"C"+g+" = vec4(previous.zw, xTexelR"+v+"C"+g+".xy);\n                } else {\n                  xR"+v+"C"+g+" = vec4(0, 0, xTexelR"+v+"C"+g+".xy);\n                }\n              ":"\n                if(xR >= 0 && xR < "+a+" && xC >= 0 && xC < "+o+") {\n                  xTexelR"+v+"C"+g+" = getX(batch, xR, xC, d1);\n                } else {\n                  xTexelR"+v+"C"+g+" = vec4(0.);\n                }\n\n                xR"+v+"C"+g+" = xTexelR"+v+"C"+g+";\n              ",g+1<d)){var x=s%2==0?I(p):p;p%2==0&&s%2==1||p%2!=0&&s%2!=1?(m+="\n                  xCOffset = xC + "+s%2+" + "+x+";\n\n                  if(xR >= 0 && xR < "+a+" &&\n                    xCOffset >= 0 && xCOffset < "+o+") {\n                    xTexelR"+v+"C"+(g+2)+" = getX(batch, xR, xCOffset, d1);\n                  }\n                ",p>1&&(m+="\n                    xCOffset -= 2;\n                    if(xR >= 0 && xR < "+a+" &&\n                      xCOffset >= 0 && xCOffset < "+o+") {\n                      xTexelR"+v+"C"+g+" = getX(batch, xR, xCOffset, d1);\n                    } else {\n                      xTexelR"+v+"C"+g+" = vec4(0.);\n                    }\n                  "),m+="\n                  xR"+v+"C"+(g+1)+" = vec4(\n                    xTexelR"+v+"C"+g+".zw, xTexelR"+v+"C"+(g+2)+".xy);\n                "):m+="\n                  xCOffset = xC + "+x+";\n\n                  if(xR >= 0 && xR < "+a+" &&\n                    xCOffset >= 0 && xCOffset < "+o+") {\n                    xTexelR"+v+"C"+(g+2)+" = getX(batch, xR, xCOffset, d1);\n                  }\n\n                  xR"+v+"C"+(g+1)+" = xTexelR"+v+"C"+(g+2)+";\n                "}}else g<d&&(m+="\n              if(xR >= 0 && xR < "+a+") {\n            ",s%2==1?(m+="\n                xCOffset = xC + 1 - "+c+";\n                if(xCOffset >= 0 && xCOffset < "+o+") {\n                  xTexelR"+v+"C"+g+" = getX(batch, xR, xCOffset, d1);\n                } else {\n                  xTexelR"+v+"C"+g+" = vec4(0.);\n                }\n\n                if(xC + 1 >= 0 && xC + 1 < "+o+") {\n                  xTexelR"+v+"C"+(g+2)+" = getX(batch, xR, xC + 1, d1);\n                } else {\n                  xTexelR"+v+"C"+(g+2)+" = vec4(0.);\n                }\n\n                xR"+v+"C"+g+" = vec4(\n                  xTexelR"+v+"C"+g+".zw, xTexelR"+v+"C"+(g+2)+".zw);\n              ",g+1<d&&(m+="\n                  vec4 final = vec4(0.);\n                  xCOffset = xC + 1 + "+c+";\n                  if(xCOffset >= 0 && xCOffset < "+o+") {\n                    final = getX(batch, xR, xCOffset, d1);\n                  }\n                  xR"+v+"C"+(g+1)+" = vec4(xTexelR"+v+"C"+(g+2)+".xy, final.xy);\n                ")):(m+="\n                if(xC >= 0 && xC < "+o+") {\n                  xTexelR"+v+"C"+g+" = getX(batch, xR, xC, d1);\n                } else {\n                  xTexelR"+v+"C"+g+" = vec4(0.);\n                }\n\n                xCOffset = xC + "+c+";\n                if(xCOffset >= 0 && xCOffset < "+o+") {\n                  xTexelR"+v+"C"+(g+2)+" = getX(batch, xR, xCOffset, d1);\n                } else {\n                  xTexelR"+v+"C"+(g+2)+" = vec4(0.);\n                }\n\n                xR"+v+"C"+g+" = vec4(\n                  xTexelR"+v+"C"+g+".xy, xTexelR"+v+"C"+(g+2)+".xy);\n              ",g+1<d&&(m+="\n                  xR"+v+"C"+(g+1)+" = vec4(\n                    xTexelR"+v+"C"+g+".zw, xTexelR"+v+"C"+(g+2)+".zw);\n                ")),m+="}");g<d&&(m+="\n            vec4 wTexelR"+v+"C"+g+" = getW("+v+", "+g+", d1, q);\n            wR"+v+"C"+g+" = vec4(wTexelR"+v+"C"+g+".xz, wTexelR"+v+"C"+g+".xz);\n          ",g+1<d&&(m+="\n              vec4 wTexelR"+v+"C"+(g+1)+" = getW("+v+", "+(g+1)+", d1, q);\n              wR"+v+"C"+(g+1)+" =\n                vec4(wTexelR"+v+"C"+(g+1)+".xz, wTexelR"+v+"C"+(g+1)+".xz);"))}for(v=0;v<f;v++)for(g=0;g<d;g++)m+="dotProd += xR"+v+"C"+g+" * wR"+v+"C"+g+";";var b="",w="";n&&(b=r?"vec4 activation(vec4 a) {\n          vec4 b = getPreluActivationWeightsAtOutCoords();\n          "+n+"\n        }":"vec4 activation(vec4 x) {\n          "+n+"\n        }",w="result = activation(result);");var C=e?"result += getBiasAtOutCoords();":"";e&&this.variableNames.push("bias"),r&&this.variableNames.push("preluActivationWeights"),this.userCode="\n      "+b+"\n\n      const ivec2 strides = ivec2("+u+", "+c+");\n      const ivec2 pads = ivec2("+i+", "+s+");\n\n      void main() {\n\n        ivec4 coords = getOutputCoords();\n        int batch = coords.x;\n        ivec2 xRCCorner = coords.yz * strides - pads;\n        int d2 = coords.w;\n        int d1 = d2;\n        int q = 0;\n        int xRCorner = xRCCorner.x;\n        int xCCorner = xRCCorner.y;\n\n        vec4 dotProd = vec4(0.);\n\n        "+m+"\n\n        vec4 result = dotProd;\n        "+C+"\n        "+w+"\n        setOutput(result);\n      }\n    "},Go=function(t,e,n,r,a){this.variableNames=["Image","Boxes","BoxInd"],this.outputShape=[];var o=t[0],i=t[1],s=t[2],u=t[3],c=e[0],l=n[0],p=n[1];this.outputShape=[c,l,p,u];var f="bilinear"===r?1:0,d=[i-1+".0",s-1+".0"],h=d[0],m=d[1],v=l>1?[""+(i-1)/(l-1),"(y2-y1) * height_ratio","y1*"+h+" + float(y)*(height_scale)"]:["0.0","0.0","0.5 * (y1+y2) * "+h],g=v[0],y=v[1],x=v[2],b=p>1?[""+(s-1)/(p-1),"(x2-x1) * width_ratio","x1*"+m+" + float(x)*(width_scale)"]:["0.0","0.0","0.5 * (x1+x2) * "+m],w=b[0],C=b[1],E=b[2];this.userCode="\n      const float height_ratio = float("+g+");\n      const float width_ratio = float("+w+");\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int y = coords[1];\n        int x = coords[2];\n        int d = coords[3];\n\n        // get box vals\n        float y1 = getBoxes(b,0);\n        float x1 = getBoxes(b,1);\n        float y2 = getBoxes(b,2);\n        float x2 = getBoxes(b,3);\n\n        // get image in batch index\n        int bInd = round(getBoxInd(b));\n        if(bInd < 0 || bInd >= "+o+") {\n          return;\n        }\n\n        float height_scale = "+y+";\n        float width_scale = "+C+";\n\n        float in_y = "+x+";\n        if( in_y < 0.0 || in_y > "+h+" ) {\n          setOutput(float("+a+"));\n          return;\n        }\n        float in_x = "+E+";\n        if( in_x < 0.0 || in_x > "+m+" ) {\n          setOutput(float("+a+"));\n          return;\n        }\n\n        vec2 sourceFracIndexCR = vec2(in_x,in_y);\n        if("+f+" == 1) {\n          // Compute the four integer indices.\n          ivec2 sourceFloorCR = ivec2(sourceFracIndexCR);\n          ivec2 sourceCeilCR = ivec2(ceil(sourceFracIndexCR));\n\n          float topLeft = getImage(b, sourceFloorCR.y, sourceFloorCR.x, d);\n          float bottomLeft = getImage(b, sourceCeilCR.y, sourceFloorCR.x, d);\n          float topRight = getImage(b, sourceFloorCR.y, sourceCeilCR.x, d);\n          float bottomRight = getImage(b, sourceCeilCR.y, sourceCeilCR.x, d);\n\n          vec2 fracCR = sourceFracIndexCR - vec2(sourceFloorCR);\n\n          float top = topLeft + (topRight - topLeft) * fracCR.x;\n          float bottom = bottomLeft + (bottomRight - bottomLeft) * fracCR.x;\n          float newValue = top + (bottom - top) * fracCR.y;\n          setOutput(newValue);\n        } else {\n          // Compute the coordinators of nearest neighbor point.\n          ivec2 sourceNearestCR = ivec2(floor(\n            sourceFracIndexCR + vec2(0.5,0.5)));\n          float newValue = getImage(b, sourceNearestCR.y, sourceNearestCR.x, d);\n          setOutput(newValue);\n        }\n      }\n    "},Ho=function(t,e,n){this.variableNames=["x"],this.outputShape=t;var r=t.length,a=t[t.length-1],o=n?"<":">";this.userCode="\n      int getIndex(int i) {\n        "+(n?"return "+a+" -i - 1;":"return i;")+"\n      }\n\n      void main() {\n        "+po(r)+" coords = getOutputCoords();\n        int end = "+qo(r,"coords")+";\n        float val = 0.0;\n        for (int i = "+a+" - 1; i >= 0; i -= 1) {\n          int idx = getIndex(i);\n          if (idx "+o+" end) {\n            continue;\n          }\n          if (idx == end && "+e+") {\n            continue;\n          }\n          "+qo(r,"coords")+" = idx;\n          val += getX("+function(t,e){if(1===t)return""+e;if(2===t)return e+".x, "+e+".y";if(3===t)return e+".x, "+e+".y, "+e+".z";if(4===t)return e+".x, "+e+".y, "+e+".z, "+e+".w";throw Error("Cumulative sum for rank "+t+" is not yet supported")}(r,"coords")+");\n        }\n        setOutput(val);\n      }\n    "};function qo(t,e){if(1===t)return""+e;if(2===t)return e+".y";if(3===t)return e+".z";if(4===t)return e+".w";throw Error("Cumulative sum for rank "+t+" is not yet supported")}var Ko=function(t){this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0,this.outPackingScheme=zt.DENSE;var e=Yt(t),n=to();this.outputShape=t,this.userCode="\n      ivec3 outCoordsFromFlatIndex(int index) {\n        "+eo(["r","c","d"],t)+"\n        return ivec3(r, c, d);\n      }\n\n      void main() {\n        ivec2 resTexRC = ivec2(resultUV.yx *\n          vec2("+e[0]+", "+e[1]+"));\n        int index = 4 * (resTexRC.x * "+e[1]+" + resTexRC.y);\n\n        vec4 result = vec4(0.);\n\n        for (int i=0; i<4; i++) {\n          int flatIndex = index + i;\n          ivec3 rc = outCoordsFromFlatIndex(flatIndex);\n          result[i] = getA(rc.x, rc.y, rc.z);\n        }\n\n        "+n.output+" = result;\n      }\n    "},Xo=function(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outPackingScheme=zt.DENSE;var e=Yt(t),n=to();this.outputShape=t,this.userCode="\n      ivec3 outCoordsFromFlatIndex(int index) {\n        "+eo(["r","c","d"],t)+"\n        return ivec3(r, c, d);\n      }\n\n      void main() {\n        ivec2 resTexRC = ivec2(resultUV.yx *\n          vec2("+e[0]+", "+e[1]+"));\n        int index = 4 * (resTexRC.x * "+e[1]+" + resTexRC.y);\n\n        vec4 result = vec4(0.);\n\n        for (int i=0; i<4; i++) {\n          int flatIndex = index + i;\n          ivec3 rc = outCoordsFromFlatIndex(flatIndex);\n          result[i] = getChannel(getA(rc.x, rc.y, rc.z), vec2(rc.y, rc.z));\n        }\n\n        "+n.output+" = result;\n      }\n    "},Yo=function(){function t(t,e,n){this.variableNames=["x"],this.outputShape=[],this.outputShape=t,this.blockSize=e,this.dataFormat=n,this.userCode="\n    void main() {\n      ivec4 coords = getOutputCoords();\n      int b = coords[0];\n      int h = "+this.getHeightCoordString()+";\n      int w = "+this.getWidthCoordString()+";\n      int d = "+this.getDepthCoordString()+";\n\n      int in_h = h / "+e+";\n      int offset_h = imod(h, "+e+");\n      int in_w = w / "+e+";\n      int offset_w = imod(w, "+e+");\n      int offset_d = (offset_h * "+e+" + offset_w) *\n        "+this.getOutputDepthSize()+";\n      int in_d = d + offset_d;\n\n      float result = "+this.getInputSamplingString()+";\n      setOutput(result);\n    }\n  "}return t.prototype.getHeightCoordString=function(){return"NHWC"===this.dataFormat?"coords[1]":"coords[2]"},t.prototype.getWidthCoordString=function(){return"NHWC"===this.dataFormat?"coords[2]":"coords[3]"},t.prototype.getDepthCoordString=function(){return"NHWC"===this.dataFormat?"coords[3]":"coords[1]"},t.prototype.getOutputDepthSize=function(){return"NHWC"===this.dataFormat?this.outputShape[3]:this.outputShape[1]},t.prototype.getInputSamplingString=function(){return"NHWC"===this.dataFormat?"getX(b, in_h, in_w, in_d)":"getX(b, in_d, in_h, in_w)"},t}(),$o=function(t){this.variableNames=["X"],this.outputShape=[t,t],this.userCode="\n      void main() {\n          ivec2 coords = getOutputCoords();\n          float val = coords[0] == coords[1] ? getX(coords[0]) : 0.0;\n          setOutput(val);\n      }\n    "},Qo=function(t){this.variableNames=["A"],this.outTexUsage=Ut.DOWNLOAD;var e=to();this.outputShape=t,this.userCode="\n      "+ro+"\n\n      void main() {\n        float x = getAAtOutCoords();\n        "+e.output+" = encode_float(x);\n      }\n    "},Jo=function(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!1,this.outTexUsage=Ut.DOWNLOAD;var e=to();this.outputShape=t,this.userCode="\n      "+ro+"\n\n      void main() {\n        ivec3 coords = getOutputCoords();\n        float x = getChannel(getAAtOutCoords(), vec2(coords.y, coords.z));\n        "+e.output+" = encode_float(x);\n      }\n    "},Zo=function(t,e,n){void 0===n&&(n=!1),this.variableNames=["A"];var r=to(),a=e[0],o=e[1];this.outputShape=t;var i="result";n&&(i="floor(result * 255. + 0.5)"),this.userCode="\n      "+no(t)+"\n\n      void main() {\n        ivec3 coords = getOutputCoords();\n\n        int flatIndex = getFlatIndex(coords);\n        int offset = imod(flatIndex, 4);\n\n        flatIndex = idiv(flatIndex, 4, 1.);\n        \n        int r = flatIndex / "+o+";\n        int c = imod(flatIndex, "+o+");\n        vec2 uv = (vec2(c, r) + halfCR) / vec2("+o+".0, "+a+".0);\n        vec4 values = "+r.texture2D+"(A, uv);\n\n        float result;\n\n        if(offset == 0) {\n          result = values[0];\n        } else if(offset == 1) {\n          result = values[1];\n        } else if(offset == 2) {\n          result = values[2];\n        } else {\n          result = values[3];\n        }\n\n        "+r.output+" = vec4("+i+", 0., 0., 0.);\n      }\n    "},ti=function(t,e,n){void 0===n&&(n=!1),this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0;var r=to(),a=e[0],o=e[1];this.outputShape=t;var i="",s="result";n&&(s="floor(result * 255. + 0.5)");for(var u=0;u<=1;u++)for(var c=0;c<=1;c++){var l=2*u+c;i+="\n          localCoords = coords;\n          if(localCoords[2] + "+c+" < "+t[2]+") {\n            localCoords[2] += "+c+";\n            if(localCoords[1] + "+u+" < "+t[1]+") {\n              localCoords[1] += "+u+";\n\n              flatIndex = getFlatIndex(localCoords);\n              offset = imod(flatIndex, 4);\n\n              flatIndex = idiv(flatIndex, 4, 1.);\n\n              r = flatIndex / "+o+";\n              c = imod(flatIndex, "+o+");\n              uv = (vec2(c, r) + halfCR) / vec2("+o+".0, "+a+".0);\n              values = "+r.texture2D+"(A, uv);\n\n              if(offset == 0) {\n                result["+l+"] = values[0];\n              } else if(offset == 1) {\n                result["+l+"] = values[1];\n              } else if(offset == 2) {\n                result["+l+"] = values[2];\n              } else {\n                result["+l+"] = values[3];\n              }\n            }\n          }\n        "}this.userCode="\n      "+no(t)+"\n\n      void main() {\n        ivec3 coords = getOutputCoords();\n\n        vec4 result = vec4(0.);\n        int flatIndex, r, c, offset;\n        ivec3 localCoords;\n        vec2 uv;\n        vec4 values;\n\n        "+i+"\n\n        "+r.output+" = "+s+";\n      }\n    "},ei=function(t,e,n){this.variableNames=["real","imag"];var r=e[1];this.outputShape=e;var a=n?"2.0 * "+Math.PI:"-2.0 * "+Math.PI,o=n?r+".0":"1.0";this.userCode="\n      const float exponentMultiplier = "+a+";\n\n      float unaryOpComplex(float real, float expR, float imag, float expI) {\n        "+t+"\n      }\n\n      float mulMatDFT(int batch, int index) {\n        float indexRatio = float(index) / float("+r+");\n        float exponentMultiplierTimesIndexRatio =\n            exponentMultiplier * indexRatio;\n\n        float result = 0.0;\n\n        for (int i = 0; i < "+r+"; i++) {\n          // x = (-2|2 * PI / N) * index * i;\n          float x = exponentMultiplierTimesIndexRatio * float(i);\n          float expR = cos(x);\n          float expI = sin(x);\n          float real = getReal(batch, i);\n          float imag = getImag(batch, i);\n\n          result +=\n              unaryOpComplex(real, expR, imag, expI) / "+o+";\n        }\n\n        return result;\n      }\n\n      void main() {\n        ivec2 coords = getOutputCoords();\n        setOutput(mulMatDFT(coords[0], coords[1]));\n      }\n    "},ni=function(){function t(t,e){this.outputShape=[],this.variableNames=["x"],this.outputShape=t,this.userCode="\n      uniform float value;\n      void main() {\n        // Input can be obtained from uniform value.\n        setOutput(value);\n      }\n    "}return t.prototype.getCustomSetupFunc=function(t){var e=this;return function(n,r){null==e.valueLoc&&(e.valueLoc=n.getUniformLocationNoThrow(r,"value")),n.gl.uniform1f(e.valueLoc,t)}},t}(),ri=function(t,e,n){this.variableNames=["A","indices"];var r=t.slice();r[n]=e,this.outputShape=r,this.rank=r.length;var a=po(this.rank),o=function(t,e){var n=t.length;if(n>4)throw Error("Gather for rank "+n+" is not yet supported");if(1===n)return"int(getIndices(resRC))";for(var r=["resRC.x","resRC.y","resRC.z","resRC.w"],a=[],o=0;o<t.length;o++)o===e?a.push("int(getIndices("+r[o]+"))"):a.push(""+r[o]);return a.join()}(t,n);this.userCode="\n      void main() {\n        "+a+" resRC = getOutputCoords();\n        setOutput(getA("+o+"));\n      }\n    "},ai=function(t,e,n){this.sliceDim=t,this.strides=e,this.variableNames=["x","indices"],this.outputShape=n;var r=po(e.length),a=po(n.length),o=this.sliceDim>1?"strides[j]":"strides";this.userCode="\n        "+r+" strides = "+r+"("+this.strides+");\n         void main() {\n          "+a+" coords = getOutputCoords();\n          int flattenIndex = 0;\n          for (int j = 0; j < "+this.sliceDim+"; j++) {\n            int index = round(getIndices(coords[0], j));\n            flattenIndex += index * "+o+";\n          }\n          setOutput(getX(flattenIndex, coords[1]));\n        }\n      "};function oi(t,e){var n=to();return ne(t,e,n.version+"\n    precision highp float;\n    "+n.attribute+" vec3 clipSpacePos;\n    "+n.attribute+" vec2 uv;\n    "+n.varyingVs+" vec2 resultUV;\n\n    void main() {\n      gl_Position = vec4(clipSpacePos, 1);\n      resultUV = uv;\n    }")}function ii(t,e){return le(t,e,new Float32Array([-1,1,0,0,1,-1,-1,0,0,0,1,1,0,1,1,1,-1,0,1,0]))}function si(t,e){return pe(t,e,new Uint16Array([0,1,2,2,1,3]))}function ui(t,e,n,r,a,o,i){de(n,r);var s=fe(t,e),u=t.TEXTURE_2D;return Jt(t,e,(function(){return t.bindTexture(u,s)})),Jt(t,e,(function(){return t.texParameteri(u,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE)})),Jt(t,e,(function(){return t.texParameteri(u,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE)})),Jt(t,e,(function(){return t.texParameteri(u,t.TEXTURE_MIN_FILTER,t.NEAREST)})),Jt(t,e,(function(){return t.texParameteri(u,t.TEXTURE_MAG_FILTER,t.NEAREST)})),Jt(t,e,(function(){return t.texImage2D(u,0,a,n,r,0,o,i,null)})),Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,null)})),s}function ci(t,e,n,r,a){var o=Xt(n,r);return ui(t,e,o[0],o[1],a.internalFormatFloat,a.textureFormatFloat,t.FLOAT)}function li(t,e,n,r,a){var o=Xt(n,r);return ui(t,e,o[0],o[1],a.internalFormatHalfFloat,a.textureFormatFloat,a.textureTypeHalfFloat)}function pi(t,e,n,r,a){var o=Xt(n,r);return ui(t,e,o[0],o[1],t.RGBA,t.RGBA,t.UNSIGNED_BYTE)}function fi(t,e,n,r,a){var o=$t(n,r);return ui(t,e,o[0],o[1],a.internalFormatPackedFloat,t.RGBA,t.FLOAT)}function di(t,e,n,r,a){var o=$t(n,r);return ui(t,e,o[0],o[1],a.internalFormatPackedHalfFloat,t.RGBA,a.textureTypeHalfFloat)}function hi(t,e,n,r){return Jt(t,e,(function(){return t.bindBuffer(t.ARRAY_BUFFER,r)})),me(t,e,n,"clipSpacePos",r,3,20,0)&&me(t,e,n,"uv",r,2,20,12)}function mi(t,e,n,r,a,o,i){var s,u,c;Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,n)})),o instanceof Uint8Array?(s=new Uint8Array(r*a*4),u=t.UNSIGNED_BYTE,c=t.RGBA):(s=new Float32Array(r*a*4),u=t.FLOAT,c=i.internalFormatPackedFloat),s.set(o),Jt(t,e,(function(){return t.texImage2D(t.TEXTURE_2D,0,c,r,a,0,t.RGBA,u,s)})),Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,null)}))}function vi(t,e,n,r){Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,n)})),r.data instanceof Uint8Array?Jt(t,e,(function(){return t.texImage2D(t.TEXTURE_2D,0,t.RGBA,r.width,r.height,0,t.RGBA,t.UNSIGNED_BYTE,r.data)})):Jt(t,e,(function(){return t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,r)})),Jt(t,e,(function(){return t.bindTexture(t.TEXTURE_2D,null)}))}function gi(t,e,n,r,a){var o=t.createBuffer();Jt(t,e,(function(){return t.bindBuffer(t.PIXEL_PACK_BUFFER,o)}));var i=16*n*r;return Jt(t,e,(function(){return t.bufferData(t.PIXEL_PACK_BUFFER,i,t.STREAM_READ)})),Jt(t,e,(function(){return t.readPixels(0,0,r,n,t.RGBA,t.FLOAT,0)})),Jt(t,e,(function(){return t.bindBuffer(t.PIXEL_PACK_BUFFER,null)})),o}function yi(t,e,n){var r=t,a=new Float32Array(n);return r.bindBuffer(r.PIXEL_PACK_BUFFER,e),r.getBufferSubData(r.PIXEL_PACK_BUFFER,0,a),r.bindBuffer(r.PIXEL_PACK_BUFFER,null),a}function xi(t,e,n,r,a){var o=Xt(n,r),i=o[0],s=o[1],u=new Uint8Array(n*r*4);return Jt(t,e,(function(){return t.readPixels(0,0,i,s,a.downloadTextureFormat,t.UNSIGNED_BYTE,u)})),new Float32Array(u.buffer)}function bi(t,e,n,r,a,o,i,s){var u=t,c=new Float32Array(function(t,e){var n=$t(t,e);return n[0]*n[1]*4}(o,i));return u.bindBuffer(u.PIXEL_PACK_BUFFER,e),u.getBufferSubData(u.PIXEL_PACK_BUFFER,0,c),u.bindBuffer(u.PIXEL_PACK_BUFFER,null),c}function wi(t,e,n,r){var a=new Float32Array(n*r*4);return Jt(t,e,(function(){return t.readPixels(0,0,r,n,t.RGBA,t.FLOAT,a)})),a}var Ci=Object.freeze({createVertexShader:oi,createVertexBuffer:ii,createIndexBuffer:si,createFloat32MatrixTexture:ci,createFloat16MatrixTexture:li,createUnsignedBytesMatrixTexture:pi,createPackedMatrixTexture:fi,createFloat16PackedMatrixTexture:di,bindVertexProgramAttributeStreams:hi,uploadDenseMatrixToTexture:mi,uploadPixelDataToTexture:vi,createBufferFromOutputTexture:gi,downloadFloat32MatrixFromBuffer:yi,downloadByteEncodedFloatMatrixFromOutputTexture:xi,downloadPackedMatrixFromBuffer:bi,downloadMatrixFromPackedOutputTexture:wi}),Ei=function(){function t(t){this.outputTexture=null,this.program=null,this.disposed=!1,this.vertexAttrsAreBound=!1,this.itemsToPoll=[];var e=f().getNumber("WEBGL_VERSION");null!=t?(this.gl=t,qt(e,t)):this.gl=Kt(e);var n="WEBGL_color_buffer_float";if(1===f().getNumber("WEBGL_VERSION")){if(this.textureFloatExtension=ee(this.gl,this.debug,"OES_texture_float"),Me(this.gl,"OES_texture_half_float"))this.textureHalfFloatExtension=ee(this.gl,this.debug,"OES_texture_half_float");else if(f().get("WEBGL_FORCE_F16_TEXTURES"))throw new Error("GL context does not support half float textures, yet the environment flag WEBGL_FORCE_F16_TEXTURES is set to true.");if(this.colorBufferFloatExtension=this.gl.getExtension(n),Me(this.gl,"EXT_color_buffer_half_float"))this.colorBufferHalfFloatExtension=ee(this.gl,this.debug,"EXT_color_buffer_half_float");else if(f().get("WEBGL_FORCE_F16_TEXTURES"))throw new Error("GL context does not support color renderable half floats, yet the environment flag WEBGL_FORCE_F16_TEXTURES is set to true.")}else if(n="EXT_color_buffer_float",Me(this.gl,n))this.colorBufferFloatExtension=this.gl.getExtension(n);else{if(!Me(this.gl,"EXT_color_buffer_half_float"))throw new Error("GL context does not support color renderable floats");this.colorBufferHalfFloatExtension=this.gl.getExtension("EXT_color_buffer_half_float")}this.vertexBuffer=ii(this.gl,this.debug),this.indexBuffer=si(this.gl,this.debug),this.framebuffer=he(this.gl,this.debug),this.textureConfig=Qt(this.gl,this.textureHalfFloatExtension)}return Object.defineProperty(t.prototype,"debug",{get:function(){return f().getBool("DEBUG")},enumerable:!0,configurable:!0}),t.prototype.dispose=function(){var t=this;if(!this.disposed){null!=this.program&&console.warn("Disposing a GPGPUContext that still has a bound WebGLProgram. This is probably a resource leak, delete the program with GPGPUContext.deleteProgram before disposing."),null!=this.outputTexture&&console.warn("Disposing a GPGPUContext that still has a bound output matrix texture.  This is probably a resource leak, delete the output matrix texture with GPGPUContext.deleteMatrixTexture before disposing.");var e=this.gl;Jt(e,this.debug,(function(){return e.finish()})),Jt(e,this.debug,(function(){return e.bindFramebuffer(e.FRAMEBUFFER,null)})),Jt(e,this.debug,(function(){return e.deleteFramebuffer(t.framebuffer)})),Jt(e,this.debug,(function(){return e.bindBuffer(e.ARRAY_BUFFER,null)})),Jt(e,this.debug,(function(){return e.bindBuffer(e.ELEMENT_ARRAY_BUFFER,null)})),Jt(e,this.debug,(function(){return e.deleteBuffer(t.indexBuffer)})),this.disposed=!0}},t.prototype.createFloat32MatrixTexture=function(t,e){return this.throwIfDisposed(),ci(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createFloat16MatrixTexture=function(t,e){return this.throwIfDisposed(),li(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createUnsignedBytesMatrixTexture=function(t,e){return this.throwIfDisposed(),pi(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.uploadPixelDataToTexture=function(t,e){this.throwIfDisposed(),vi(this.gl,this.debug,t,e)},t.prototype.uploadDenseMatrixToTexture=function(t,e,n,r){this.throwIfDisposed(),mi(this.gl,this.debug,t,e,n,r,this.textureConfig)},t.prototype.createFloat16PackedMatrixTexture=function(t,e){return this.throwIfDisposed(),di(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.createPackedMatrixTexture=function(t,e){return this.throwIfDisposed(),fi(this.gl,this.debug,t,e,this.textureConfig)},t.prototype.deleteMatrixTexture=function(t){var e=this;this.throwIfDisposed(),this.outputTexture===t&&(we(this.gl,this.debug,this.framebuffer),this.outputTexture=null),Jt(this.gl,this.debug,(function(){return e.gl.deleteTexture(t)}))},t.prototype.downloadByteEncodedFloatMatrixFromOutputTexture=function(t,e,n){var r=this;return this.downloadMatrixDriver(t,(function(){return xi(r.gl,r.debug,e,n,r.textureConfig)}))},t.prototype.downloadPackedMatrixFromBuffer=function(t,e,n,r,a,o){return bi(this.gl,t,0,0,0,a,o,this.textureConfig)},t.prototype.downloadFloat32MatrixFromBuffer=function(t,e){return yi(this.gl,t,e)},t.prototype.createBufferFromTexture=function(t,e,n){this.bindTextureToFrameBuffer(t);var r=gi(this.gl,this.debug,e,n,this.textureConfig);return this.unbindTextureToFrameBuffer(),r},t.prototype.createAndWaitForFence=function(){var t=this.createFence(this.gl);return this.pollFence(t)},t.prototype.createFence=function(t){var e,n,r=this;if(f().getBool("WEBGL_FENCE_API_ENABLED")){var a=t,o=a.fenceSync(a.SYNC_GPU_COMMANDS_COMPLETE,0);t.flush(),n=function(){var t=a.clientWaitSync(o,0,0);return t===a.ALREADY_SIGNALED||t===a.CONDITION_SATISFIED},e=o}else f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?(e=this.beginQuery(),this.endQuery(),n=function(){return r.isQueryAvailable(e,f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))}):n=function(){return!0};return{query:e,isFencePassed:n}},t.prototype.downloadMatrixFromPackedTexture=function(t,e,n){var r=this;return this.downloadMatrixDriver(t,(function(){return wi(r.gl,r.debug,e,n)}))},t.prototype.createProgram=function(t){this.throwIfDisposed();var e=this.gl,n=re(e,this.debug,t),r=oi(e,this.debug),a=se(e,this.debug);return Jt(e,this.debug,(function(){return e.attachShader(a,r)})),Jt(e,this.debug,(function(){return e.attachShader(a,n)})),ue(e,this.debug,a),this.debug&&ce(e,this.debug,a),this.vertexAttrsAreBound||(this.setProgram(a),this.vertexAttrsAreBound=hi(e,this.debug,this.program,this.vertexBuffer)),a},t.prototype.deleteProgram=function(t){var e=this;this.throwIfDisposed(),t===this.program&&(this.program=null),null!=t&&Jt(this.gl,this.debug,(function(){return e.gl.deleteProgram(t)}))},t.prototype.setProgram=function(t){var e=this;this.throwIfDisposed(),this.program=t,null!=this.program&&this.debug&&ce(this.gl,this.debug,this.program),Jt(this.gl,this.debug,(function(){return e.gl.useProgram(t)}))},t.prototype.getUniformLocation=function(t,e,n){return void 0===n&&(n=!0),this.throwIfDisposed(),n?ge(this.gl,this.debug,t,e):ye(this.gl,t,e)},t.prototype.getAttributeLocation=function(t,e){var n=this;return this.throwIfDisposed(),Jt(this.gl,this.debug,(function(){return n.gl.getAttribLocation(t,e)}))},t.prototype.getUniformLocationNoThrow=function(t,e){return this.throwIfDisposed(),this.gl.getUniformLocation(t,e)},t.prototype.setInputMatrixTexture=function(t,e,n){this.throwIfDisposed(),this.throwIfNoProgram(),xe(this.gl,this.debug,this.program,t,e,n)},t.prototype.setOutputMatrixTexture=function(t,e,n){this.setOutputMatrixTextureDriver(t,n,e)},t.prototype.setOutputPackedMatrixTexture=function(t,e,n){this.throwIfDisposed();var r=$t(e,n),a=r[0],o=r[1];this.setOutputMatrixTextureDriver(t,a,o)},t.prototype.setOutputMatrixWriteRegion=function(t,e,n,r){this.setOutputMatrixWriteRegionDriver(n,t,r,e)},t.prototype.setOutputPackedMatrixWriteRegion=function(t,e,n,r){throw new Error("setOutputPackedMatrixWriteRegion not implemented.")},t.prototype.debugValidate=function(){null!=this.program&&ce(this.gl,this.debug,this.program),Ce(this.gl)},t.prototype.executeProgram=function(){this.throwIfDisposed(),this.throwIfNoProgram();var t=this.gl;this.debug&&this.debugValidate(),Jt(t,this.debug,(function(){return t.drawElements(t.TRIANGLES,6,t.UNSIGNED_SHORT,0)}))},t.prototype.blockUntilAllProgramsCompleted=function(){var t=this;this.throwIfDisposed(),Jt(this.gl,this.debug,(function(){return t.gl.finish()}))},t.prototype.getQueryTimerExtension=function(){return null==this.disjointQueryTimerExtension&&(this.disjointQueryTimerExtension=ee(this.gl,this.debug,2===f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")?"EXT_disjoint_timer_query_webgl2":"EXT_disjoint_timer_query")),this.disjointQueryTimerExtension},t.prototype.getQueryTimerExtensionWebGL2=function(){return this.getQueryTimerExtension()},t.prototype.getQueryTimerExtensionWebGL1=function(){return this.getQueryTimerExtension()},t.prototype.beginQuery=function(){if(2===f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")){var t=this.gl,e=this.getQueryTimerExtensionWebGL2(),n=t.createQuery();return t.beginQuery(e.TIME_ELAPSED_EXT,n),n}var r=this.getQueryTimerExtensionWebGL1(),a=r.createQueryEXT();return r.beginQueryEXT(r.TIME_ELAPSED_EXT,a),a},t.prototype.endQuery=function(){if(2!==f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")){var t=this.getQueryTimerExtensionWebGL1();t.endQueryEXT(t.TIME_ELAPSED_EXT)}else{var e=this.gl,n=this.getQueryTimerExtensionWebGL2();e.endQuery(n.TIME_ELAPSED_EXT)}},t.prototype.waitForQueryAndGetTime=function(t){return u(this,void 0,void 0,(function(){var e=this;return c(this,(function(n){switch(n.label){case 0:return[4,L((function(){return e.disposed||e.isQueryAvailable(t,f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))}))];case 1:return n.sent(),[2,this.getQueryTime(t,f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION"))]}}))}))},t.prototype.getQueryTime=function(t,e){if(0===e)return null;if(2===e){var n=this.gl;return n.getQueryParameter(t,n.QUERY_RESULT)/1e6}var r=this.getQueryTimerExtensionWebGL1();return r.getQueryObjectEXT(t,r.QUERY_RESULT_EXT)/1e6},t.prototype.isQueryAvailable=function(t,e){if(0===e)return!0;if(2===e){var n=this.gl,r=this.getQueryTimerExtensionWebGL2(),a=n.getQueryParameter(t,n.QUERY_RESULT_AVAILABLE);return null==this.disjoint&&(this.disjoint=this.gl.getParameter(r.GPU_DISJOINT_EXT)),a&&!this.disjoint}return a=(r=this.getQueryTimerExtensionWebGL1()).getQueryObjectEXT(t,r.QUERY_RESULT_AVAILABLE_EXT),null==this.disjoint&&(this.disjoint=this.gl.getParameter(r.GPU_DISJOINT_EXT)),a&&!this.disjoint},t.prototype.pollFence=function(t){var e=this;return new Promise((function(n){e.addItemToPoll((function(){return t.isFencePassed()}),(function(){return n()}))}))},t.prototype.pollItems=function(){for(var t=function(t){for(var e=0;e<t.length&&t[e]();++e);return e-1}(this.itemsToPoll.map((function(t){return t.isDoneFn}))),e=0;e<=t;++e)(0,this.itemsToPoll[e].resolveFn)();this.itemsToPoll=this.itemsToPoll.slice(t+1)},t.prototype.addItemToPoll=function(t,e){var n=this;this.itemsToPoll.push({isDoneFn:t,resolveFn:e}),this.itemsToPoll.length>1||L((function(){return n.pollItems(),0===n.itemsToPoll.length}))},t.prototype.bindTextureToFrameBuffer=function(t){this.throwIfDisposed(),be(this.gl,this.debug,t,this.framebuffer),this.debug&&Ce(this.gl)},t.prototype.unbindTextureToFrameBuffer=function(){null!=this.outputTexture?(be(this.gl,this.debug,this.outputTexture,this.framebuffer),this.debug&&Ce(this.gl)):we(this.gl,this.debug,this.framebuffer)},t.prototype.downloadMatrixDriver=function(t,e){this.bindTextureToFrameBuffer(t);var n=e();return this.unbindTextureToFrameBuffer(),n},t.prototype.setOutputMatrixTextureDriver=function(t,e,n){this.throwIfDisposed();var r=this.gl;be(r,this.debug,t,this.framebuffer),this.debug&&Ce(r),this.outputTexture=t,Jt(r,this.debug,(function(){return r.viewport(0,0,e,n)})),Jt(r,this.debug,(function(){return r.scissor(0,0,e,n)}))},t.prototype.setOutputMatrixWriteRegionDriver=function(t,e,n,r){var a=this;this.throwIfDisposed(),Jt(this.gl,this.debug,(function(){return a.gl.scissor(t,e,n,r)}))},t.prototype.throwIfDisposed=function(){if(this.disposed)throw new Error("Attempted to use disposed GPGPUContext.")},t.prototype.throwIfNoProgram=function(){if(null==this.program)throw new Error("No GPU program is currently set.")},t}();function Si(t,e){if(t.length!==e.length)throw Error("Binary was compiled with "+t.length+" inputs, but was executed with "+e.length+" inputs");t.forEach((function(t,n){var r=t.logicalShape,a=e[n],o=a.shape;if(!_(r,o))throw Error("Binary was compiled with different shapes than the current args. Shapes "+r+" and "+o+" must match");if(!t.isUniform||!a.isUniform){var i=t.texShape,s=a.isUniform?null:a.texData.texShape;if(!_(i,s))throw Error("Binary was compiled with different texture shapes than the current args. Shape "+i+" and "+s+" must match")}}))}var Ni=function(t,e,n){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t;for(var r=n.filterWidth,a=n.inChannels,o=n.strideWidth,i=n.strideHeight,s=n.padInfo,u=n.outWidth,c=n.dilationWidth,l=n.dilationHeight,p=n.dataFormat,f=s.left,d=s.top,h=a*r,m=to(),v="channelsLast"===p,g=v?0:1,y=v?1:2,x="",b=0;b<=1;b++)for(var w=0;w<=1;w++)x+="\n          blockIndex = rc.y + "+w+";\n          pos = rc.x + "+b+";\n\n          if(blockIndex < "+t[1]+" && pos < "+t[0]+") {\n            offsetY = int(blockIndex / ("+u+")) * "+i+" - "+d+";\n            d0 = offsetY + "+l+" * (pos / "+h+");\n\n            if(d0 < "+e[g]+" && d0 >= 0) {\n\n              offsetX = int(mod(float(blockIndex), "+u+".) * "+o+". - "+f+".);\n              d1 = offsetX + "+c+" * (int(mod(float(pos), "+h+".) / "+a+".));\n\n              if(d1 < "+e[y]+" && d1 >= 0) {\n\n                ch = int(mod(float(pos), "+a+".));\n\n                if ("+v+") {\n                  innerDims = vec2(d1, ch);\n                  result["+(2*b+w)+"] = getChannel(\n                    getA(d0, int(innerDims.x),\n                    int(innerDims.y)), innerDims);\n                } else {\n                  innerDims = vec2(d0, d1);\n                  result["+(2*b+w)+"] = getChannel(\n                    getA(ch, int(innerDims.x),\n                    int(innerDims.y)), innerDims);\n                }\n              }\n            }\n          }\n        ";this.userCode="\n      void main() {\n        ivec2 rc = getOutputCoords();\n\n        vec4 result = vec4(0);\n\n        int blockIndex, pos, offsetY, d0, offsetX, d1, ch;\n        vec2 innerDims;\n\n        "+x+"\n\n        "+m.output+" = result;\n      }\n    "},Ii=function(t,e,n,r,a){this.variableNames=["x"],this.outputShape=[];var o,i=e,s=t[3]-1;this.outputShape=t;var u="float("+n+") + float("+r+") * sum";o=.5===a?"inversesqrt("+u+")":1===a?"1.0/("+u+")":"exp(log("+u+") * float(-"+a+"));",this.userCode="\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int r = coords[1];\n        int c = coords[2];\n        int d = coords[3];\n        float x = getX(b, r, c, d);\n        float sum = 0.0;\n        for (int j = -"+i+"; j <= "+i+"; j++) {\n          int idx = d + j;\n          if (idx >= 0 && idx <=  "+s+") {\n            float z = getX(b, r, c, idx);\n            sum += z * z;\n          }\n        }\n        float val = x * "+o+";\n        setOutput(val);\n      }\n    "},Ri=function(t,e,n,r,a){this.variableNames=["inputImage","outputImage","dy"],this.outputShape=[],this.outputShape=t,this.depth=t[3],this.depthRadius=e,this.bias=n,this.alpha=r,this.beta=a,this.userCode="\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int r = coords[1];\n        int c = coords[2];\n\n        float result = 0.0;\n        for (int d = 0; d < "+this.depth+"; ++d) {\n          int depthBegin = int(max(0.0, float(d - "+e+")));\n          int depthEnd = int(min(float("+this.depth+"),\n              float(d + "+e+" + 1)));\n\n          const int MIN_DEPTH_BEGIN = 0;\n          const int MAX_DEPTH_END = "+this.depth+";\n\n          float norm = 0.0;\n          for (int k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; ++k) {\n            if (k < depthBegin){\n              continue;\n            }\n            else if (k >= depthBegin && k < depthEnd) {\n              norm += getInputImage(b, r, c, k) * getInputImage(b, r, c, k);\n            }\n            else {\n              break;\n            }\n          }\n\n          norm = float("+r+") * norm + float("+n+");\n\n          for(int k = MIN_DEPTH_BEGIN; k < MAX_DEPTH_END; ++k){\n            if (k < depthBegin){\n              continue;\n            }\n            else if (k >= depthBegin && k < depthEnd){\n              float dyi = -2.0 * float("+r+")\n                * float("+a+")\n                * getInputImage(b ,r ,c, k) * getOutputImage(b, r, c, d)\n                / norm;\n              if (k == d) {\n                dyi += pow(norm, -1.0 * "+a+");\n              }\n              if (k == coords[3]) {\n                dyi *= getDy(b, r, c, d);\n                result += dyi;\n              }\n            }\n            else {\n              break;\n            }\n          }\n      }\n      setOutput(result);\n      }\n    "},Ti=function(t,e,n,r,a){this.variableNames=["x"],this.outputShape=[],this.packedInputs=!0,this.packedOutput=!0;var o,i=e,s=t[3]-1;this.outputShape=t;var u="float("+n+") + float("+r+") * sum";o=.5===a?"inversesqrt("+u+")":1===a?"1.0/("+u+")":"exp(log("+u+") * float(-"+a+"));",this.userCode="\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords.x;\n        int r = coords.y;\n        int c = coords.z;\n        int d = coords.w;\n\n        bool hasNextCol = d < "+this.outputShape[3]+";\n        bool hasNextRow = c < "+this.outputShape[2]+";\n\n        vec4 sum = vec4(0.);\n        vec4 xFragAtOutputCoords = getX(b, r, c, d);\n\n        vec4 xAtOutputCoords = vec4(\n          getChannel(xFragAtOutputCoords, vec2(c, d)),\n          hasNextCol ?\n            getChannel(xFragAtOutputCoords, vec2(c, d + 1)) : 0.0,\n          hasNextRow ?\n            getChannel(xFragAtOutputCoords , vec2(c + 1, d)) : 0.0,\n          (hasNextRow && hasNextCol) ?\n            getChannel(xFragAtOutputCoords, vec2(c + 1, d + 1)) : 0.0\n        );\n\n        int firstChannel = d - "+i+";\n        vec2 cache = vec2(0.);\n        if(firstChannel >= 0){\n          vec4 firstChannelFrag = getX(b, r, c, firstChannel);\n          cache.x = getChannel(firstChannelFrag, vec2(c, firstChannel));\n            if(hasNextRow){\n              cache.y = getChannel(firstChannelFrag, vec2(c + 1, firstChannel));\n            }\n        }\n\n        ivec2 depth = ivec2(d, d + 1);\n        for (int j = - "+i+"; j <= "+i+"; j++) {\n          ivec2 idx = depth + j;\n          bvec2 aboveLowerBound = greaterThanEqual(idx, ivec2(0));\n          bvec2 belowUpperBound = lessThanEqual(idx, ivec2("+s+"));\n\n          bool depthInRange = aboveLowerBound.x && belowUpperBound.x;\n          bool depthPlusOneInRange = aboveLowerBound.y && belowUpperBound.y;\n\n          if(depthInRange || depthPlusOneInRange){\n            vec4 z = vec4(0.);\n            vec4 xFragAtCurrentDepth;\n            z.xz = cache.xy;\n            if(depthPlusOneInRange && hasNextCol){\n              xFragAtCurrentDepth = idx.y != d ?\n                getX(b, r, c, idx.y) : xFragAtOutputCoords;\n              z.y = getChannel(xFragAtCurrentDepth, vec2(c, idx.y));\n              if(hasNextRow){\n                z.w = getChannel(xFragAtCurrentDepth, vec2(c + 1, idx.y));\n              }\n            }\n            cache.xy = z.yw;\n            sum += z * z;\n          }\n        }\n        vec4 result = xAtOutputCoords * "+o+";\n        setOutput(result);\n      }\n    "},ki=function(t){this.variableNames=["dy","maxPos"],this.outputShape=t.inShape;var e=t.strideHeight,n=t.strideWidth,r=t.dilationHeight,a=t.effectiveFilterHeight,o=t.effectiveFilterWidth,i=a-1-t.padInfo.top,s=o-1-t.padInfo.left,u=a*o-1;this.userCode="\n      const ivec2 pads = ivec2("+i+", "+s+");\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int d = coords[3];\n\n        ivec2 dyRCCorner = coords.yz - pads;\n        int dyRCorner = dyRCCorner.x;\n        int dyCCorner = dyRCCorner.y;\n\n        // Convolve dy(?, ?, d) with pos mask(:, :, d) to get dx(xR, xC, d).\n        // ? = to be determined. : = across all values in that axis.\n        float dotProd = 0.0;\n        for (int wR = 0; wR < "+a+";\n          wR += "+r+") {\n          float dyR = float(dyRCorner + wR) / "+e+".0;\n\n          if (dyR < 0.0 || dyR >= "+t.outHeight+".0 || fract(dyR) > 0.0) {\n            continue;\n          }\n          int idyR = int(dyR);\n\n          for (int wC = 0; wC < "+o+"; wC++) {\n            float dyC = float(dyCCorner + wC) / "+n+".0;\n\n            if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n                fract(dyC) > 0.0) {\n              continue;\n            }\n            int idyC = int(dyC);\n\n            float dyValue = getDy(b, idyR, idyC, d);\n            int maxPosValue = "+u+" - int(getMaxPos(b, idyR, idyC, d));\n\n            // Get the current value, check it against the value from the\n            // position matrix.\n            int curPosValue = wR * "+o+" + wC;\n            float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);\n\n            dotProd += dyValue * mask;\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Ai=function(t){this.variableNames=["dy","maxPos"],this.outputShape=t.inShape;var e=t.strideDepth,n=t.strideHeight,r=t.strideWidth,a=t.dilationDepth,o=t.dilationHeight,i=t.dilationWidth,s=t.effectiveFilterDepth,u=t.effectiveFilterHeight,c=t.effectiveFilterWidth,l=s-1-t.padInfo.front,p=u-1-t.padInfo.top,f=c-1-t.padInfo.left,d=s*u*c-1;this.userCode="\n      const ivec3 pads = ivec3("+l+", "+p+", "+f+");\n\n      void main() {\n        ivec5 coords = getOutputCoords();\n        int batch = coords.x;\n        int ch = coords.u;\n\n        ivec3 dyCorner = ivec3(coords.y, coords.z, coords.w) - pads;\n        int dyDCorner = dyCorner.x;\n        int dyRCorner = dyCorner.y;\n        int dyCCorner = dyCorner.z;\n\n        // Convolve dy(?, ?, ?, ch) with pos mask(:, :, :, d) to get\n        // dx(xD, xR, xC, ch).\n        // ? = to be determined. : = across all values in that axis.\n        float dotProd = 0.0;\n\n        for (int wD = 0; wD < "+s+";\n           wD += "+a+") {\n          float dyD = float(dyDCorner + wD) / "+e+".0;\n\n          if (dyD < 0.0 || dyD >= "+t.outDepth+".0 || fract(dyD) > 0.0) {\n            continue;\n          }\n          int idyD = int(dyD);\n\n          for (int wR = 0; wR < "+u+";\n              wR += "+o+") {\n            float dyR = float(dyRCorner + wR) / "+n+".0;\n\n            if (dyR < 0.0 || dyR >= "+t.outHeight+".0 ||\n                fract(dyR) > 0.0) {\n              continue;\n            }\n            int idyR = int(dyR);\n\n            for (int wC = 0; wC < "+c+";\n                wC += "+i+") {\n              float dyC = float(dyCCorner + wC) / "+r+".0;\n\n              if (dyC < 0.0 || dyC >= "+t.outWidth+".0 ||\n                  fract(dyC) > 0.0) {\n                continue;\n              }\n              int idyC = int(dyC);\n\n              float dyValue = getDy(batch, idyD, idyR, idyC, ch);\n              int maxPosValue = "+d+" -\n                  int(getMaxPos(batch, idyD, idyR, idyC, ch));\n\n              // Get the current value, check it against the value from the\n              // position matrix.\n              int curPosValue =\n                  wD * "+u+" * "+c+" +\n                  wR * "+c+" + wC;\n              float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);\n\n              dotProd += dyValue * mask;\n            }\n          }\n        }\n        setOutput(dotProd);\n      }\n    "},Oi=function(t,e,n,r,a,o,i){void 0===n&&(n=!1),void 0===r&&(r=!1),void 0===a&&(a=!1),void 0===o&&(o=null),void 0===i&&(i=!1),this.variableNames=["matrixA","matrixB"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=e;var s=n?t[1]:t[2],u=Math.ceil(s/2),c=n?"i * 2, rc.y":"rc.y, i * 2",l=r?"rc.z, i * 2":"i * 2, rc.z",p=n?["a.xxyy","a.zzww"]:["a.xxzz","a.yyww"],f=r?["b.xzxz","b.ywyw"]:["b.xyxy","b.zwzw"],d="",h="";o&&(d=i?"vec4 activation(vec4 a) {\n          vec4 b = getPreluActivationWeightsAtOutCoords();\n          "+o+"\n        }":"vec4 activation(vec4 x) {\n          "+o+"\n        }",h="result = activation(result);");var m=a?"result += getBiasAtOutCoords();":"";a&&this.variableNames.push("bias"),i&&this.variableNames.push("preluActivationWeights"),this.userCode="\n      "+d+"\n\n      const float sharedDimension = "+u+".0;\n\n      vec4 dot2x2ARowBCol(ivec3 rc) {\n        vec4 result = vec4(0);\n        for (int i = 0; i < "+u+"; i++) {\n          vec4 a = getMatrixA(rc.x, "+c+");\n          vec4 b = getMatrixB(rc.x, "+l+");\n\n          // These swizzled products need to be separately added.\n          // See: https://github.com/tensorflow/tfjs/issues/1735\n          result += ("+p[0]+" * "+f[0]+");\n          result += ("+p[1]+" * "+f[1]+");\n        }\n        return result;\n      }\n\n      void main() {\n        ivec3 rc = getOutputCoords();\n        vec4 result = dot2x2ARowBCol(rc);\n\n        "+m+"\n\n        "+h+"\n\n        setOutput(result);\n      }\n    "},Di=function(){function t(t,e,n){this.variableNames=["probs"],this.outputShape=[t,n],this.userCode="\n      uniform float seed;\n\n      void main() {\n        ivec2 coords = getOutputCoords();\n        int batch = coords[0];\n\n        float r = random(seed);\n        float cdf = 0.0;\n\n        for (int i = 0; i < "+(e-1)+"; i++) {\n          cdf += getProbs(batch, i);\n\n          if (r < cdf) {\n            setOutput(float(i));\n            return;\n          }\n        }\n\n        // If no other event happened, last event happened.\n        setOutput(float("+(e-1)+"));\n      }\n    "}return t.prototype.getCustomSetupFunc=function(t){var e=this;return function(n,r){null==e.seedLoc&&(e.seedLoc=n.getUniformLocation(r,"seed")),n.gl.uniform1f(e.seedLoc,t)}},t}(),_i=function(t,e,n,r){this.variableNames=["indices"],this.outputShape=[t,e],this.userCode="\n      void main() {\n        ivec2 coords = getOutputCoords();\n        int index = round(getIndices(coords.x));\n        setOutput(mix(float("+r+"), float("+n+"),\n                      float(index == coords.y)));\n      }\n    "},Fi=function(t){this.variableNames=["A"],this.packedInputs=!1,this.packedOutput=!0,this.outputShape=t;var e=t.length;if(0===e)this.userCode="\n        void main() {\n          setOutput(vec4(getA(), 0., 0., 0.));\n        }\n      ";else{var n=Za("rc",e),r=po(e),a=function(t,e,n){if(1===t)return"rc > "+e[0];for(var r="",a=t-2;a<t;a++)r+=n[a]+" >= "+e[a],a<t-1&&(r+="||");return r}(e,t,n),o=function(t,e,n,r){if(1===t)return"";var a=r.slice(-2);return"\n    int r = "+a[0]+";\n    int c = "+a[1]+";\n    int rp1 = r + 1;\n    int cp1 = c + 1;\n\n    bool cEdge = cp1 >= "+e+";\n    bool rEdge = rp1 >= "+n+";\n  "}(e,t[t.length-1],t[t.length-2],n),i=function(t,e){var n=t.length,r=function(t,e){for(var n=[],r=0;r<=1;r++)for(var a=0;a<=1;a++){for(var o=(0===r?"r":"rp1")+", "+(0===a?"c":"cp1"),i=2;i<t;i++)o=e[e.length-1-i]+","+o;n.push(o)}return n}(n,e);return 1===n?"getA(rc),\n            rc + 1 >= "+t[0]+" ? 0. : getA(rc + 1),\n            0, 0":"getA("+r[0]+"),\n          cEdge ? 0. : getA("+r[1]+"),\n          rEdge ? 0. : getA("+r[2]+"),\n          rEdge || cEdge ? 0. : getA("+r[3]+")"}(t,n);this.userCode="\n        void main() {\n          "+r+" rc = getOutputCoords();\n\n          if("+a+") {\n            setOutput(vec4(0));\n          } else {\n            "+o+"\n\n            setOutput(vec4("+i+"));\n          }\n        }\n      "}},Mi=function(t,e,n){this.variableNames=["x"],this.outputShape=e.map((function(e,n){return e[0]+t[n]+e[1]}));var r=t.length,a=po(r),o=e.map((function(t){return t[0]})).join(","),i=e.map((function(e,n){return e[0]+t[n]})).join(","),s=["coords[0]","coords[1]","coords[2]","coords[3]"].slice(0,r);this.userCode=1!==r?"\n      "+a+" start = "+a+"("+o+");\n      "+a+" end = "+a+"("+i+");\n\n      void main() {\n        "+a+" outC = getOutputCoords();\n        if (any(lessThan(outC, start)) || any(greaterThanEqual(outC, end))) {\n          setOutput(float("+n+"));\n        } else {\n          "+a+" coords = outC - start;\n          setOutput(getX("+s+"));\n        }\n      }\n    ":"\n        int start = "+o+";\n        int end = "+i+";\n\n        void main() {\n          int outC = getOutputCoords();\n          if (outC < start || outC >= end) {\n            setOutput(float("+n+"));\n          } else {\n            setOutput(getX(outC - start));\n          }\n        }\n      "},Bi=function(t,e,n){this.variableNames=["x"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=e.map((function(e,n){return e[0]+t[n]+e[1]}));for(var r=t.length,a=po(r),o=e.map((function(t){return t[0]})).join(","),i=e.map((function(e,n){return e[0]+t[n]})).join(","),s=Za("rc",r),u=Za("source",r),c=s[r-1]+" < "+this.outputShape[r-1],l=1===r?"source":"vec2("+u.slice(-2).join()+")",p=[a+" rc = outputLoc;",s[r-1]+" += 1;\n       if("+c+") {\n      ",1===r?"":"}\n       rc = outputLoc;\n       "+s[r-2]+" += 1;\n       if("+s[r-2]+" < "+this.outputShape[r-2]+") {",1===r?"":"  "+s[r-1]+" += 1;\n         if("+c+") {"],f=1===r?"rc < start || rc >= end":"any(lessThan(rc, start)) || any(greaterThanEqual(rc, end))",d="",h=0,m=1===r?2:4;h<m;h++)d+="\n        "+p[h]+"\n        if ("+f+") {\n          result["+h+"] = float("+n+");\n        } else {\n          "+a+" source = rc - start;\n          result["+h+"] = getChannel(getX("+u.join()+"), "+l+");\n        }\n      ";d+=1===r?"} ":"}}",this.userCode="\n      const "+a+" start = "+a+"("+o+");\n      const "+a+" end = "+a+"("+i+");\n\n      void main() {\n        "+a+" outputLoc = getOutputCoords();\n        vec4 result = vec4(0.);\n        "+d+"\n        setOutput(result);\n      }\n    "},Pi=function(t,e,n){if(this.variableNames=["x"],"avg"===e&&n)throw new Error("Cannot compute positions for average pool.");var r=t.filterWidth,a=t.strideHeight,o=t.strideWidth,i=t.dilationHeight,s=t.dilationWidth,u=t.effectiveFilterHeight,c=t.effectiveFilterWidth,l=t.padInfo.top,p=t.padInfo.left;this.outputShape=t.outShape;var f="avg"===e,d="0.0";if(f||(d="-1.0 / 1e-20"),n)this.userCode="\n        const ivec2 strides = ivec2("+a+", "+o+");\n        const ivec2 pads = ivec2("+l+", "+p+");\n\n        void main() {\n          ivec4 coords = getOutputCoords();\n          int batch = coords[0];\n          int d = coords[3];\n\n          ivec2 xRCCorner = coords.yz * strides - pads;\n          int xRCorner = xRCCorner.x;\n          int xCCorner = xRCCorner.y;\n\n          // max/min x(?, ?, d) to get y(yR, yC, d).\n          // ? = to be determined\n          float minMaxValue = 0.0;\n          float minMaxValueFound = 0.0;\n          int minMaxPosition = 0;\n          float avgValue = 0.0;\n\n          for (int wR = 0; wR < "+u+";\n              wR += "+i+") {\n            int xR = xRCorner + wR;\n\n            if (xR < 0 || xR >= "+t.inHeight+") {\n              continue;\n            }\n\n            for (int wC = 0; wC < "+c+";\n                wC += "+s+") {\n              int xC = xCCorner + wC;\n\n              if (xC < 0 || xC >= "+t.inWidth+") {\n                continue;\n              }\n\n              float value = getX(batch, xR, xC, d);\n\n              // If a min / max value has already been found, use it. If not,\n              // use the current value.\n              float currMinMaxValue = mix(\n                  value, minMaxValue, minMaxValueFound);\n              if (value >= currMinMaxValue) {\n                minMaxValue = value;\n                minMaxValueFound = 1.0;\n                minMaxPosition = wR * "+c+" + wC;\n              }\n            }\n          }\n          setOutput(float(minMaxPosition));\n        }\n      ";else{var h=e+"("+e+"("+e+"(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])";"avg"===e&&(h="avgValue / count");var m=4*Math.floor(r/4),v=r%4,g="\n      if ("+f+") {\n        avgValue += dot(values, ones);\n      } else {\n        minMaxValue = max(values, minMaxValue);\n      }\n    ";this.userCode="\n      const ivec2 strides = ivec2("+a+", "+o+");\n      const ivec2 pads = ivec2("+l+", "+p+");\n      const float initializationValue = "+d+";\n      const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);\n\n      float count = 0.0;\n\n      float getValue(int batch, int xR, int xC, int d) {\n        if (xC < 0 || xC >= "+t.inWidth+") {\n          return initializationValue;\n        }\n        count += 1.0;\n        return getX(batch, xR, xC, d);\n      }\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int batch = coords[0];\n        int d = coords[3];\n\n        ivec2 xRCCorner = coords.yz * strides - pads;\n        int xRCorner = xRCCorner.x;\n        int xCCorner = xRCCorner.y;\n\n        // max/min x(?, ?, d) to get y(yR, yC, d).\n        // ? = to be determined\n        vec4 minMaxValue = vec4("+d+");\n        float avgValue = 0.0;\n        count = 0.0;\n\n        for (int wR = 0; wR < "+u+";\n            wR += "+i+") {\n          int xR = xRCorner + wR;\n\n          if (xR < 0 || xR >= "+t.inHeight+") {\n            continue;\n          }\n\n          for (int wC = 0; wC < "+m+"; wC += 4) {\n            int xC = xCCorner + wC * "+s+";\n\n            vec4 values = vec4(\n              getValue(batch, xR, xC, d),\n              getValue(batch, xR, xC + "+s+", d),\n              getValue(batch, xR, xC + 2 * "+s+", d),\n              getValue(batch, xR, xC + 3 * "+s+", d)\n            );\n\n            "+g+"\n          }\n\n          int xC = xCCorner + "+m+";\n          if ("+(1===v)+") {\n            vec4 values = vec4(\n              getValue(batch, xR, xC, d),\n              initializationValue,\n              initializationValue,\n              initializationValue\n            );\n\n            "+g+"\n          } else if ("+(2===v)+") {\n            vec4 values = vec4(\n              getValue(batch, xR, xC, d),\n              getValue(batch, xR, xC + "+s+", d),\n              initializationValue,\n              initializationValue\n            );\n\n            "+g+"\n          } else if ("+(3===v)+") {\n            vec4 values = vec4(\n              getValue(batch, xR, xC, d),\n              getValue(batch, xR, xC + "+s+", d),\n              getValue(batch, xR, xC + 2 * "+s+", d),\n              initializationValue\n            );\n\n            "+g+"\n          }\n        }\n        setOutput("+h+");\n      }\n    "}},Li=function(t,e,n){if(this.variableNames=["x"],"avg"===e&&n)throw new Error("Cannot compute positions for average pool.");var r=t.filterWidth,a=t.strideDepth,o=t.strideHeight,i=t.strideWidth,s=t.dilationDepth,u=t.dilationHeight,c=t.dilationWidth,l=t.effectiveFilterDepth,p=t.effectiveFilterHeight,f=t.effectiveFilterWidth,d=t.padInfo.front,h=t.padInfo.top,m=t.padInfo.left;this.outputShape=t.outShape;var v="avg"===e,g="0.0";if(v||(g="-1.0 / 1e-20"),n)this.userCode="\n        const ivec3 strides =\n            ivec3("+a+", "+o+", "+i+");\n        const ivec3 pads = ivec3("+d+", "+h+", "+m+");\n\n        void main() {\n          ivec5 coords = getOutputCoords();\n          int batch = coords.x;\n          int ch = coords.u;\n\n          ivec3 xCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;\n          int xDCorner = xCorner.x;\n          int xRCorner = xCorner.y;\n          int xCCorner = xCorner.z;\n\n          // max/min x(?, ?, ?, ch) to get y(yD, yR, yC, ch).\n          // ? = to be determined\n          float minMaxValue = 0.0;\n          float minMaxValueFound = 0.0;\n          int minMaxPosition = 0;\n\n          for (int wD = 0; wD < "+l+";\n              wD += "+s+") {\n            int xD = xDCorner + wD;\n\n            if (xD < 0 || xD >= "+t.inDepth+") {\n              continue;\n            }\n\n            for (int wR = 0; wR < "+p+";\n                wR += "+u+") {\n              int xR = xRCorner + wR;\n\n              if (xR < 0 || xR >= "+t.inHeight+") {\n                continue;\n              }\n\n              for (int wC = 0; wC < "+f+";\n                  wC += "+c+") {\n                int xC = xCCorner + wC;\n\n                if (xC < 0 || xC >= "+t.inWidth+") {\n                  continue;\n                }\n\n                float value = getX(batch, xD, xR, xC, ch);\n\n                // If a min / max value has already been found, use it. If not,\n                // use the current value.\n                float currMinMaxValue = mix(\n                    value, minMaxValue, minMaxValueFound);\n                if (value >= currMinMaxValue) {\n                  minMaxValue = value;\n                  minMaxValueFound = 1.0;\n                  minMaxPosition =\n                      wD * "+p+" * "+f+" +\n                      wR * "+f+" + wC;;\n                }\n              }\n            }\n          }\n          setOutput(float(minMaxPosition));\n        }\n      ";else{var y=e+"("+e+"("+e+"(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])";"avg"===e&&(y="avgValue / count");var x=4*Math.floor(r/4),b=r%4,w="\n      if ("+v+") {\n        avgValue += dot(values, ones);\n      } else {\n        minMaxValue = max(values, minMaxValue);\n      }\n    ";this.userCode="\n      const ivec3 strides =\n        ivec3("+a+", "+o+", "+i+");\n      const ivec3 pads = ivec3("+d+", "+h+", "+m+");\n      const float initializationValue = "+g+";\n      const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);\n\n      float count = 0.0;\n\n      float getValue(int batch, int xD, int xR, int xC, int ch) {\n        if (xC < 0 || xC >= "+t.inWidth+") {\n          return initializationValue;\n        }\n        count += 1.0;\n        return getX(batch, xD, xR, xC, ch);\n      }\n\n      void main() {\n        ivec5 coords = getOutputCoords();\n        int batch = coords.x;\n        int ch = coords.u;\n\n        ivec3 xCorner = ivec3(coords.y, coords.z, coords.w) * strides - pads;\n        int xDCorner = xCorner.x;\n        int xRCorner = xCorner.y;\n        int xCCorner = xCorner.z;\n\n        // max/min x(?, ?, ?, d) to get y(yD, yR, yC, ch).\n        // ? = to be determined\n        vec4 minMaxValue = vec4("+g+");\n        float avgValue = 0.0;\n        count = 0.0;\n\n        for (int wD = 0; wD < "+l+";\n            wD += "+s+") {\n          int xD = xDCorner + wD;\n\n          if (xD < 0 || xD >= "+t.inDepth+") {\n            continue;\n          }\n\n          for (int wR = 0; wR < "+p+";\n            wR += "+u+") {\n            int xR = xRCorner + wR;\n\n            if (xR < 0 || xR >= "+t.inHeight+") {\n              continue;\n            }\n\n            for (int wC = 0; wC < "+x+"; wC += 4) {\n              int xC = xCCorner + wC * "+c+";\n\n              vec4 values = vec4(\n                getValue(batch, xD, xR, xC, ch),\n                getValue(batch, xD, xR, xC + "+c+", ch),\n                getValue(batch, xD, xR, xC + 2 * "+c+", ch),\n                getValue(batch, xD, xR, xC + 3 * "+c+", ch)\n              );\n\n              "+w+"\n            }\n\n            int xC = xCCorner + "+x+";\n            if ("+(1===b)+") {\n              vec4 values = vec4(\n                getValue(batch, xD, xR, xC, ch),\n                initializationValue,\n                initializationValue,\n                initializationValue\n              );\n\n              "+w+"\n            } else if ("+(2===b)+") {\n              vec4 values = vec4(\n                getValue(batch, xD, xR, xC, ch),\n                getValue(batch, xD, xR, xC + "+c+", ch),\n                initializationValue,\n                initializationValue\n              );\n\n              "+w+"\n            } else if ("+(3===b)+") {\n              vec4 values = vec4(\n                getValue(batch, xD, xR, xC, ch),\n                getValue(batch, xD, xR, xC + "+c+", ch),\n                getValue(batch, xD, xR, xC + 2 * "+c+", ch),\n                initializationValue\n              );\n\n              "+w+"\n            }\n          }\n          setOutput("+y+");\n        }\n      }\n    "}},Vi=function(t,e){this.variableNames=["x"];var n=t.windowSize,r=t.batchSize,a=t.inSize,o=Math.ceil(a/n);this.outputShape=[r,o];var i="0.0",s="";"prod"===e?i="1.0":"min"===e?(i="1.0 / 1e-20",s="min"):"max"===e&&(i="-1.0 / 1e-20",s="max");var u=e+"("+e+"("+e+"(minMaxValue[0], minMaxValue[1]), minMaxValue[2]), minMaxValue[3])";"sum"===e?u="sumValue":"prod"===e?u="prodValue":"all"===e?u="allValue":"any"===e&&(u="anyValue");var c=4*Math.floor(n/4),l=n%4,p="\n      if ("+("sum"===e)+") {\n        sumValue += dot(values, ones);\n      } else if ("+("prod"===e)+") {\n        vec2 tmp = vec2(values[0], values[1]) * vec2(values[2], values[3]);\n        prodValue *= tmp[0] * tmp[1];\n      } else {\n        minMaxValue = "+s+"(values, minMaxValue);\n      }\n    ",f="vec4";"all"===e?(i="1.0",p="\n        bool reducedAllValue = all(values);\n        float floatedReducedAllValue = float(reducedAllValue);\n        allValue = float(allValue >= 1.0 && floatedReducedAllValue >= 1.0);\n      ",f="bvec4"):"any"===e&&(i="0.0",p="\n        bool reducedAnyValue = any(values);\n        float floatedReducedAnyValue = float(reducedAnyValue);\n        anyValue = float(anyValue >= 1.0 || floatedReducedAnyValue >= 1.0);\n      ",f="bvec4");var d="";a%n>0&&(d="\n        if (inIdx < 0 || inIdx >= "+a+") {\n          return initializationValue;\n        }\n      "),this.userCode="\n      const float initializationValue = "+i+";\n      const vec4 ones = vec4(1.0, 1.0, 1.0, 1.0);\n\n      float getValue(int batch, int inIdx) {\n        "+d+"\n        return getX(batch, inIdx);\n      }\n\n      void main() {\n        ivec2 coords = getOutputCoords();\n        int batch = coords[0];\n        int outIdx = coords[1];\n        int inOffset = outIdx * "+n+";\n\n        vec4 minMaxValue = vec4("+i+");\n        float prodValue = 1.0;\n        float sumValue = 0.0;\n        float allValue = 1.0;\n        float anyValue = 0.0;\n\n        for (int i = 0; i < "+c+"; i += 4) {\n          int inIdx = inOffset + i;\n          "+f+" values = "+f+"(\n            getValue(batch, inIdx),\n            getValue(batch, inIdx + 1),\n            getValue(batch, inIdx + 2),\n            getValue(batch, inIdx + 3)\n          );\n\n          "+p+"\n        }\n\n        int inIdx = inOffset + "+c+";\n        if ("+(1===l)+") {\n          "+f+" values = "+f+"(\n            getValue(batch, inIdx),\n            initializationValue,\n            initializationValue,\n            initializationValue\n          );\n\n          "+p+"\n        } else if ("+(2===l)+") {\n          "+f+" values = "+f+"(\n            getValue(batch, inIdx),\n            getValue(batch, inIdx + 1),\n            initializationValue,\n            initializationValue\n          );\n\n          "+p+"\n        } else if ("+(3===l)+") {\n          "+f+" values = "+f+"(\n            getValue(batch, inIdx),\n            getValue(batch, inIdx + 1),\n            getValue(batch, inIdx + 2),\n            initializationValue\n          );\n\n          "+p+"\n        }\n        setOutput("+u+");\n      }\n    "},Wi=function(t,e){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t;for(var n="",r=0;r<4;r++){var a="thisRC = rc;";r%2==1&&(a+="thisRC.z += 1;"),r>1&&(a+="thisRC.y += 1;"),n+="\n        "+a+"\n        "+(r>0?"if(thisRC.y < rows && thisRC.z < cols){":"")+"\n          int flatIndex = getFlatIndex(thisRC);\n\n          ivec3 inputRC = inputCoordsFromReshapedOutCoords(flatIndex);\n          vec2 inputRCInnerDims = vec2(float(inputRC.y),float(inputRC.z));\n\n          result["+r+"] =\n            getChannel(getA(inputRC.x, inputRC.y, inputRC.z), inputRCInnerDims);\n        "+(r>0?"}":"")+"\n      "}this.userCode="\n      \n    ivec3 inputCoordsFromReshapedOutCoords(int index) {\n      "+eo(["r","c","d"],e)+"\n      return ivec3(r, c, d);\n    }\n  \n      "+no(t)+"\n\n      void main() {\n        ivec3 rc = getOutputCoords();\n\n        vec4 result = vec4(0.);\n\n        ivec3 thisRC;\n        int rows = "+t[1]+";\n        int cols = "+t[2]+";\n\n        "+n+"\n\n        setOutput(result);\n      }\n    "},zi=function(t,e,n){this.variableNames=["dy"],this.outputShape=[],this.outputShape=e.shape;var r=e.shape,a=r[1],o=r[2],i=t.shape,s=i[1],u=i[2],c=[n&&s>1?a-1:a,n&&u>1?o-1:o],l=[n&&s>1?s-1:s,n&&u>1?u-1:u],p=c[0]/l[0],f=c[1]/l[1],d=1/p,h=1/f,m=2*Math.ceil(d)+2,v=2*Math.ceil(h)+2;this.userCode="\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int d = coords[3];\n        int r = coords[1];\n        int c = coords[2];\n\n        float accumulator = 0.0;\n\n        const float heightScale = float("+p+");\n        const float widthScale = float("+f+");\n\n        const float invHeightScale = float("+d+");\n        const float invWidthScale = float("+h+");\n\n        const int winHeight = int("+m+");\n        const int winWidth = int("+v+");\n\n        // Compute bounds for where in dy we will look\n        float startRLerp = floor(float(r) * invHeightScale);\n        int startDyR = int(startRLerp - float(winHeight / 2));\n\n        float startCLerp = floor(float(c) * invWidthScale);\n        int startDyC = int(startCLerp - float(winWidth / 2));\n\n        // Loop over dy\n        for (int dyROffset = 0; dyROffset < winHeight; dyROffset++) {\n          int dyR = dyROffset + startDyR;\n\n          // Guard against the window exceeding the bounds of dy\n          if (dyR < 0 || dyR >= "+s+") {\n            continue;\n          }\n\n          for (int dyCOffset = 0; dyCOffset < winWidth; dyCOffset++) {\n            int dyC = dyCOffset + startDyC;\n\n            // Guard against the window exceeding the bounds of dy\n            if (dyC < 0 || dyC >= "+u+") {\n              continue;\n            }\n\n            float dxR = float(dyR) * heightScale;\n            int topDxRIndex = int(floor(dxR));\n            int bottomDxRIndex = int(min(ceil(dxR), "+(a-1)+".0));\n            float dxRLerp = dxR - float(topDxRIndex);\n            float inverseDxRLerp = 1.0 - dxRLerp;\n\n            float dxC = float(dyC) * widthScale;\n            int leftDxCIndex = int(floor(dxC));\n            int rightDxCIndex = int(min(ceil(dxC), "+(o-1)+".0));\n            float dxCLerp = dxC - float(leftDxCIndex);\n            float inverseDxCLerp = 1.0 - dxCLerp;\n\n            if (r == topDxRIndex && c == leftDxCIndex) {\n              // topLeft\n              accumulator +=\n                getDy(b, dyR, dyC, d) * inverseDxRLerp * inverseDxCLerp;\n            }\n\n            if (r == topDxRIndex && c == rightDxCIndex) {\n              // topRight\n              accumulator += getDy(b, dyR, dyC, d) * inverseDxRLerp * dxCLerp;\n            }\n\n            if (r == bottomDxRIndex && c == leftDxCIndex) {\n              // bottomLeft\n              accumulator += getDy(b, dyR, dyC, d) * dxRLerp * inverseDxCLerp;\n            }\n\n            if (r == bottomDxRIndex && c == rightDxCIndex) {\n              // bottomRight\n              accumulator += getDy(b, dyR, dyC, d) * dxRLerp * dxCLerp;\n            }\n          }\n        }\n        // End loop over dy\n\n        setOutput(accumulator);\n      }\n    "},Ui=function(t,e,n,r){this.variableNames=["A"],this.outputShape=[];var a=t[0],o=t[1],i=t[2],s=t[3];this.outputShape=[a,e,n,s];var u=[r&&e>1?o-1:o,r&&n>1?i-1:i],c=[r&&e>1?e-1:e,r&&n>1?n-1:n];this.userCode="\n      const vec2 effectiveInputOverOutputRatioRC = vec2(\n          "+u[0]/c[0]+",\n          "+u[1]/c[1]+");\n      const vec2 inputShapeRC = vec2("+o+".0, "+i+".0);\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int d = coords[3];\n        ivec2 yRC = coords.yz;\n\n        // Fractional source index.\n        vec2 sourceFracIndexRC = vec2(yRC) * effectiveInputOverOutputRatioRC;\n\n        // Compute the four integer indices.\n        ivec2 sourceFloorRC = ivec2(sourceFracIndexRC);\n        ivec2 sourceCeilRC = ivec2(\n          min(inputShapeRC - 1.0, ceil(sourceFracIndexRC)));\n\n        float topLeft = getA(b, sourceFloorRC.x, sourceFloorRC.y, d);\n        float bottomLeft = getA(b, sourceCeilRC.x, sourceFloorRC.y, d);\n        float topRight = getA(b, sourceFloorRC.x, sourceCeilRC.y, d);\n        float bottomRight = getA(b, sourceCeilRC.x, sourceCeilRC.y, d);\n\n        vec2 fracRC = sourceFracIndexRC - vec2(sourceFloorRC);\n\n        float top = topLeft + (topRight - topLeft) * fracRC.y;\n        float bottom = bottomLeft + (bottomRight - bottomLeft) * fracRC.y;\n        float newValue = top + (bottom - top) * fracRC.x;\n\n        setOutput(newValue);\n      }\n    "},ji=function(t,e,n,r){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=[];var a=t[0],o=t[1],i=t[2],s=t[3];this.outputShape=[a,e,n,s];var u=[r&&e>1?o-1:o,r&&n>1?i-1:i],c=[r&&e>1?e-1:e,r&&n>1?n-1:n];this.userCode="\n      const vec3 effectiveInputOverOutputRatioRC = vec3(\n          "+u[0]/c[0]+",\n          "+u[1]/c[1]+",\n          "+u[1]/c[1]+");\n      const vec3 inputShapeRC = vec3("+o+".0, "+i+".0,\n                                     "+i+".0);\n\n      float getAValue(int b, int r, int c, int d) {\n        return getChannel(getA(b, r, c, d), vec2(c, d));\n      }\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int d = coords[3];\n        // Calculate values for next column in yRC.z.\n        ivec3 yRC = coords.yzz + ivec3(0, 0, 1);\n\n        // Fractional source index.\n        vec3 sourceFracIndexRC = vec3(yRC) * effectiveInputOverOutputRatioRC;\n\n        // Compute the four integer indices.\n        ivec3 sourceFloorRC = ivec3(sourceFracIndexRC);\n        ivec3 sourceCeilRC = ivec3(\n          min(inputShapeRC - 1.0, ceil(sourceFracIndexRC)));\n\n        // Should we calculate next column and row elements in 2x2 packed cell.\n        bool hasNextCol = d < "+(s-1)+";\n        bool hasNextRow = coords.z < "+(n-1)+";\n\n        // In parallel, construct four corners for all four components in\n        // packed 2x2 cell.\n        vec4 topLeft = vec4(\n          getAValue(b, sourceFloorRC.x, sourceFloorRC.y, d),\n          hasNextCol ? getAValue(b, sourceFloorRC.x, sourceFloorRC.y, d + 1)\n                     : 0.0,\n          hasNextRow ? getAValue(b, sourceFloorRC.x, sourceFloorRC.z, d)\n                     : 0.0,\n          (hasNextRow && hasNextCol) ?\n            getAValue(b, sourceFloorRC.x, sourceFloorRC.z, d + 1) : 0.0);\n\n        vec4 bottomLeft = vec4(\n          getAValue(b, sourceCeilRC.x, sourceFloorRC.y, d),\n          hasNextCol ? getAValue(b, sourceCeilRC.x, sourceFloorRC.y, d + 1)\n                     : 0.0,\n          hasNextRow ? getAValue(b, sourceCeilRC.x, sourceFloorRC.z, d)\n                     : 0.0,\n          (hasNextRow && hasNextCol) ?\n            getAValue(b, sourceCeilRC.x, sourceFloorRC.z, d + 1) : 0.0);\n\n        vec4 topRight = vec4(\n          getAValue(b, sourceFloorRC.x, sourceCeilRC.y, d),\n          hasNextCol ? getAValue(b, sourceFloorRC.x, sourceCeilRC.y, d + 1)\n                     : 0.0,\n          hasNextRow ? getAValue(b, sourceFloorRC.x, sourceCeilRC.z, d)\n                     : 0.0,\n          (hasNextRow && hasNextCol) ?\n            getAValue(b, sourceFloorRC.x, sourceCeilRC.z, d + 1) : 0.0);\n\n        vec4 bottomRight = vec4(\n          getAValue(b, sourceCeilRC.x, sourceCeilRC.y, d),\n          hasNextCol ? getAValue(b, sourceCeilRC.x, sourceCeilRC.y, d + 1)\n                     : 0.0,\n          hasNextRow ? getAValue(b, sourceCeilRC.x, sourceCeilRC.z, d)\n                     : 0.0,\n          (hasNextRow && hasNextCol) ?\n            getAValue(b, sourceCeilRC.x, sourceCeilRC.z, d + 1) : 0.0);\n\n        vec3 fracRC = sourceFracIndexRC - vec3(sourceFloorRC);\n\n        vec4 top = mix(topLeft, topRight, fracRC.yyzz);\n        vec4 bottom = mix(bottomLeft, bottomRight, fracRC.yyzz);\n        vec4 newValue = mix(top, bottom, fracRC.x);\n\n        setOutput(newValue);\n      }\n    "},Gi=function(t,e,n){this.variableNames=["dy"],this.outputShape=[],this.outputShape=e.shape;var r=e.shape,a=r[1],o=r[2],i=t.shape,s=i[1],u=i[2],c=[n&&s>1?a-1:a,n&&u>1?o-1:o],l=[n&&s>1?s-1:s,n&&u>1?u-1:u],p=c[0]/l[0],f=c[1]/l[1],d=1/p,h=1/f,m=2*Math.ceil(d)+2,v=2*Math.ceil(h)+2;this.userCode="\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int d = coords[3];\n        int r = coords[1];\n        int c = coords[2];\n\n        float accumulator = 0.0;\n\n        const float heightScale = float("+p+");\n        const float widthScale = float("+f+");\n\n        const float invHeightScale = float("+d+");\n        const float invWidthScale = float("+h+");\n\n        const int winHeight = int("+m+");\n        const int winWidth = int("+v+");\n\n        // Compute bounds for where in dy we will look\n        float startRLerp = floor(float(r) * invHeightScale);\n        int startDyR = int(floor(startRLerp - float(winHeight / 2)));\n\n        float startCLerp = floor(float(c) * invWidthScale);\n        int startDyC = int(floor(startCLerp - float(winWidth / 2)));\n\n        // Loop over dy\n        for (int dyROffset = 0; dyROffset < winHeight; dyROffset++) {\n          int dyR = dyROffset + startDyR;\n\n          // Guard against the window exceeding the bounds of dy\n          if (dyR < 0 || dyR >= "+s+") {\n            continue;\n          }\n\n          for (int dyCOffset = 0; dyCOffset < winWidth; dyCOffset++) {\n            int dyC = dyCOffset + startDyC;\n\n            // Guard against the window exceeding the bounds of dy\n            if (dyC < 0 || dyC >= "+u+") {\n              continue;\n            }\n\n            float sourceFracRow =\n              float("+c[0]+") *\n                (float(dyR) / float("+l[0]+"));\n\n            float sourceFracCol =\n                float("+c[1]+") *\n                  (float(dyC) / float("+l[1]+"));\n\n            int sourceNearestRow = int(min(\n                float(int("+a+") - 1),\n                "+n+" ? float(round(sourceFracRow)) :\n                                  float(floor(sourceFracRow))));\n\n            int sourceNearestCol = int(min(\n                float(int("+o+") - 1),\n                "+n+" ? float(round(sourceFracCol)) :\n                                  float(floor(sourceFracCol))));\n\n            if (r == sourceNearestRow && c == sourceNearestCol) {\n              accumulator += getDy(b, dyR, dyC, d);\n            }\n          }\n        }\n        // End loop over dy\n\n        setOutput(accumulator);\n      }\n    "},Hi=function(t,e,n,r){this.variableNames=["A"],this.outputShape=[];var a=t[0],o=t[1],i=t[2],s=t[3];this.outputShape=[a,e,n,s];var u=[r&&e>1?o-1:o,r&&n>1?i-1:i],c=[r&&e>1?e-1:e,r&&n>1?n-1:n],l=r?"0.5":"0.0";this.userCode="\n      const vec2 effectiveInputOverOutputRatioRC = vec2(\n          "+u[0]/c[0]+",\n          "+u[1]/c[1]+");\n      const vec2 inputShapeRC = vec2("+o+".0, "+i+".0);\n\n      void main() {\n        ivec4 coords = getOutputCoords();\n        int b = coords[0];\n        int d = coords[3];\n        ivec2 yRC = coords.yz;\n\n        // Fractional source index.\n        vec2 sourceFracIndexRC = vec2(yRC) * effectiveInputOverOutputRatioRC;\n\n        // Compute the coordinators of nearest neighbor point.\n        ivec2 sourceNearestRC = ivec2(\n          min(inputShapeRC - 1.0, floor(sourceFracIndexRC + "+l+")));\n\n        float newValue = getA(b, sourceNearestRC.x, sourceNearestRC.y, d);\n\n        setOutput(newValue);\n      }\n    "},qi=function(t,e){this.variableNames=["x"];var n=t.length;if(n>4)throw new Error("WebGL backend: Reverse of rank-"+n+" tensor is not yet supported");if(this.outputShape=t,1!==n){var r=t.map((function(n,r){return function(n){return-1!==e.indexOf(n)&&1!==t[n]?t[n]+" - coords["+n+"] - 1":"coords["+n+"]"}(r)})).join(","),a=po(n);this.userCode="\n      void main() {\n        "+a+" coords = getOutputCoords();\n        setOutput(getX("+r+"));\n      }\n    "}else this.userCode="\n        void main() {\n          int coord = getOutputCoords();\n          setOutput(getX("+t[0]+" - coord - 1));\n        }\n      "},Ki=function(t,e){this.variableNames=["x"],this.packedInputs=!0,this.packedOutput=!0;var n=t.length;if(n>4)throw new Error("WebGL backend: Reverse of rank-"+n+" tensor is not yet supported");this.outputShape=t;var r=Za("rc",n),a=r[n-1]+" + 1 < "+this.outputShape[n-1],o=r[n-2]+" + 1 < "+this.outputShape[n-2],i=po(n);function s(n){var r=t.map((function(r,a){return function(n,r){return-1!==e.indexOf(n)&&1!==t[n]?t[n]+" - "+r[n]+" - 1":""+r[n]}(a,n)}));return"getChannel(getX("+r.join(",")+"), vec2("+r.slice(-2).join(",")+"))"}this.userCode=1===n?"\n        void main(){\n          int rc = getOutputCoords();\n          vec4 result = vec4(0.);\n          result.r = getChannel(getX("+t[0]+" - rc - 1),\n            "+t[0]+" - rc - 1);\n          if("+a+"){\n              result.g = getChannel(getX("+t[0]+" - (rc  + 1) - 1),\n                "+t[0]+" - (rc  + 1) - 1);\n          }\n          setOutput(result);\n        }\n      ":"\n        void main() {\n          "+i+" rc = getOutputCoords();\n          vec4 result = vec4(0.);\n          result.r = "+function(t){return s(t)}(r.slice())+";\n          if("+a+"){\n            result.g = "+function(t){return t[n-1]="("+t[n-1]+" + 1)",s(t)}(r.slice())+";\n          }\n          if("+o+") {\n            result.b = "+function(t){return t[n-2]="("+t[n-2]+" + 1)",s(t)}(r.slice())+";\n            if("+a+") {\n              result.a = "+function(t){return t[n-1]="("+t[n-1]+" + 1)",t[n-2]="("+t[n-2]+" + 1)",s(t)}(r.slice())+";\n            }\n          }\n          setOutput(result);\n        }\n    "},Xi=function(t,e,n,r,a,o,i){void 0===i&&(i=!0),this.variableNames=["updates","indices","defaultValue"],this.outputShape=o;var s=po(a.length),u=po(o.length),c="";1===n?c="i":2===n&&(c="i, j");var l="getIndices("+c+")",p="";1===r?p="i":2===r&&(p="i, coords[1]");var f="getUpdates("+p+")",d=e>1?"strides[j]":"strides";this.userCode="\n        "+s+" strides = "+s+"("+a+");\n\n        void main() {\n          "+u+" coords = getOutputCoords();\n          float sum = 0.0;\n          bool found = false;\n          for (int i = 0; i < "+t+"; i++) {\n            int flattenedIndex = 0;\n            for (int j = 0; j < "+e+"; j++) {\n              int index = round("+l+");\n              flattenedIndex += index * "+d+";\n            }\n            if (flattenedIndex == coords[0]) {\n              sum += "+f+";\n              found = true;\n            }\n          }\n          setOutput(mix(getDefaultValue(), sum, float(found)));\n        }\n      "},Yi=function(t,e){this.variableNames=["x","segmentIds"];var n=t.windowSize,r=t.batchSize,a=t.inSize,o=t.numSegments,i=o*Math.ceil(a/n);this.outputShape=[r,i];var s=4*Math.floor(n/4),u=n%4,c="\n        sumValue += dot(values, segFilter);\n    ",l="";a%n>0&&(l="\n        if (inIdx < 0 || inIdx >= "+a+") {\n          return initializationValue;\n        }\n      ");var p="";a%n>0&&(p="\n        if (inIdx < 0 || inIdx >= "+a+") {\n          return -1.0;\n        }\n      "),this.userCode="\n      const float initializationValue = 0.0;\n\n      float getValue(int batch, int inIdx) {\n        "+l+"\n        return getX(batch, inIdx);\n      }\n\n      float getSegmentIdAtIndex(int inIdx) {\n        "+p+"\n        return getSegmentIds(inIdx);\n      }\n\n      void main() {\n        ivec2 coords = getOutputCoords();\n        int batch = coords[0];\n        int outIdx = coords[1];\n        int inOffset = int(floor(float(outIdx) / float(\n          "+o+")) * float("+n+"));\n        int currentSeg = int(mod(float(outIdx), float("+o+")));\n\n        float sumValue = 0.0;\n\n        for (int i = 0; i < "+s+"; i += 4) {\n          int inIdx = inOffset + i;\n          vec4 values = vec4(\n            getValue(batch, inIdx),\n            getValue(batch, inIdx + 1),\n            getValue(batch, inIdx + 2),\n            getValue(batch, inIdx + 3)\n          );\n\n          vec4 segFilter = vec4(\n            int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n            int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n            int(getSegmentIdAtIndex(inIdx + 2)) == currentSeg ? 1 : 0,\n            int(getSegmentIdAtIndex(inIdx + 3)) == currentSeg ? 1 : 0\n          );\n\n          "+c+"\n        }\n\n        int inIdx = inOffset + "+s+";\n        if ("+(1===u)+") {\n          vec4 values = vec4(\n            getValue(batch, inIdx),\n            initializationValue,\n            initializationValue,\n            initializationValue\n          );\n\n          int inIdxSeg = int(getSegmentIdAtIndex(inIdx));\n\n          vec4 segFilter = vec4(\n            int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n            0,\n            0,\n            0\n          );\n\n          "+c+"\n        } else if ("+(2===u)+") {\n          vec4 values = vec4(\n            getValue(batch, inIdx),\n            getValue(batch, inIdx + 1),\n            initializationValue,\n            initializationValue\n          );\n\n          vec4 segFilter = vec4(\n            int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n            int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n              0,\n              0\n          );\n\n          "+c+"\n        } else if ("+(3===u)+") {\n          vec4 values = vec4(\n            getValue(batch, inIdx),\n            getValue(batch, inIdx + 1),\n            getValue(batch, inIdx + 2),\n            initializationValue\n          );\n\n          vec4 segFilter = vec4(\n            int(getSegmentIdAtIndex(inIdx)) == currentSeg ? 1 : 0,\n            int(getSegmentIdAtIndex(inIdx + 1)) == currentSeg ? 1 : 0,\n            int(getSegmentIdAtIndex(inIdx + 2)) == currentSeg ? 1 : 0,\n            0\n          );\n\n          "+c+"\n        }\n        setOutput(sumValue);\n      }\n    "},$i=function(t,e,n){var r,a;if(this.variableNames=["c","a","b"],this.outputShape=e,n>4)throw Error("Where for rank "+n+" is not yet supported");if(1===n)a="resRC",r="resRC";else{for(var o=["resRC.x","resRC.y","resRC.z","resRC.w"],i=[],s=[],u=0;u<e.length;u++)s.push(""+o[u]),u<t&&i.push(""+o[u]);r=i.join(),a=s.join()}var c=po(n);this.userCode="\n      void main() {\n        "+c+" resRC = getOutputCoords();\n        float cVal = getC("+r+");\n        if (cVal >= 1.0) {\n          setOutput(getA("+a+"));\n        } else {\n          setOutput(getB("+a+"));\n        }\n      }\n    "},Qi=function(){function t(t){this.variableNames=["source"],this.outputShape=t,this.rank=t.length;var e,n=po(this.rank),r="uniform int start["+this.rank+"];",a=function(t){if(1===t)return"sourceLoc";if(t<=6)return Ji.slice(0,t).map((function(t){return"sourceLoc."+t})).join(",");throw Error("Slicing for rank "+t+" is not yet supported")}(this.rank);e="\n        "+n+" sourceLoc;\n        "+n+" coords = getOutputCoords();\n        "+t.map((function(t,e){return"sourceLoc."+Ji[e]+" = start["+e+"] + coords."+Ji[e]+";"})).join("\n")+"\n      ",this.userCode="\n      "+r+"\n      void main() {\n        "+e+"\n        setOutput(getSource("+a+"));\n      }\n    "}return t.prototype.getCustomSetupFunc=function(t){var e=this;if(t.length!==this.rank)throw Error("The rank ("+this.rank+") of the program must match the length of start ("+t.length+")");return function(n,r){null==e.startLoc&&(e.startLoc=n.getUniformLocationNoThrow(r,"start"),null==e.startLoc)||n.gl.uniform1iv(e.startLoc,t)}},t}(),Ji=["x","y","z","w","u","v"],Zi=function(){function t(t){this.variableNames=["source"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.rank=t.length;var e=po(this.rank),n=Za("coords",this.rank),r=Za("sourceLoc",this.rank),a=1===this.rank?"sourceLoc":"vec2("+r.slice(-2).join()+")",o="getChannel(getSource("+r.join()+"), "+a+")",i="\n      result.x = "+o+";\n      if (++"+n[this.rank-1]+" < "+t[this.rank-1]+") {\n        ++"+r[this.rank-1]+";\n        result.y = "+o+";\n        --"+r[this.rank-1]+";\n      }\n    ",s=1===this.rank?"":"\n      --"+n[this.rank-1]+";\n      if (++"+n[this.rank-2]+" < "+t[this.rank-2]+") {\n        ++"+r[this.rank-2]+";\n        result.z = "+o+";\n        if (++"+n[this.rank-1]+" < "+t[this.rank-1]+") {\n          ++"+r[this.rank-1]+";\n          result.w = "+o+";\n        }\n      }\n    ",u=this.rank<=4?"sourceLoc = coords +\n            "+e+"("+t.map((function(t,e){return"start["+e+"]"})).join()+");":t.map((function(t,e){return r[e]+" = "+n[e]+" + start["+e+"];"})).join("\n");this.userCode="\n      uniform int start["+this.rank+"];\n      void main() {\n        "+e+" coords = getOutputCoords();\n        "+e+" sourceLoc;\n        "+u+"\n        vec4 result = vec4(0.);\n        "+i+"\n        "+s+"\n        setOutput(result);\n      }\n    "}return t.prototype.getCustomSetupFunc=function(t){var e=this;if(t.length!==this.rank)throw Error("The rank ("+this.rank+") of the program must match the length of start ("+t.length+")");return function(n,r){null==e.startLoc&&(e.startLoc=n.getUniformLocationNoThrow(r,"start"),null==e.startLoc)||n.gl.uniform1iv(e.startLoc,t)}},t}(),ts=function(t,e,n){this.variableNames=["x"],this.outputShape=n;var r=n.length,a=po(n.length),o=po(n.length),i="";if(1===r)i="coords * strides + begin";else{var s=0;i=n.map((function(t,e){return s++,1===n.length?"coords * strides["+e+"] + begin["+e+"]":"coords["+(s-1)+"] * strides["+e+"] + begin["+e+"]"})).join(",")}this.userCode="\n      "+a+" begin = "+a+"("+t+");\n      "+a+" strides = "+a+"("+e+");\n\n      void main() {\n        "+o+" coords = getOutputCoords();\n        setOutput(getX("+i+"));\n      }\n    "},es=function(){function t(t){this.gpgpu=t,this.numUsedTextures=0,this.numFreeTextures=0,this.freeTextures={},this.logEnabled=!1,this.usedTextures={}}return t.prototype.acquireTexture=function(t,e,n){var r,a=ns(e,n),o=rs(t,a,n);if(o in this.freeTextures||(this.freeTextures[o]=[]),o in this.usedTextures||(this.usedTextures[o]=[]),this.freeTextures[o].length>0){this.numFreeTextures--,this.numUsedTextures++,this.log();var i=this.freeTextures[o].shift();return this.usedTextures[o].push(i),i}return this.numUsedTextures++,this.log(),a===jt.PACKED_2X2_FLOAT32?r=this.gpgpu.createPackedMatrixTexture(t[0],t[1]):a===jt.PACKED_2X2_FLOAT16?r=this.gpgpu.createFloat16PackedMatrixTexture(t[0],t[1]):a===jt.UNPACKED_FLOAT32?r=this.gpgpu.createFloat32MatrixTexture(t[0],t[1]):a===jt.UNPACKED_FLOAT16?r=this.gpgpu.createFloat16MatrixTexture(t[0],t[1]):a===jt.PACKED_4X1_UNSIGNED_BYTE&&(r=this.gpgpu.createUnsignedBytesMatrixTexture(t[0],t[1])),this.usedTextures[o].push(r),r},t.prototype.releaseTexture=function(t,e,n,r){if(null!=this.freeTextures){var a=rs(e,ns(n,r),r);a in this.freeTextures||(this.freeTextures[a]=[]),this.freeTextures[a].push(t),this.numFreeTextures++,this.numUsedTextures--;var o=this.usedTextures[a],i=o.indexOf(t);if(i<0)throw new Error("Cannot release a texture that was never provided by this texture manager");o.splice(i,1),this.log()}},t.prototype.log=function(){if(this.logEnabled){var t=this.numFreeTextures+this.numUsedTextures;console.log("Free/Used",this.numFreeTextures+" / "+this.numUsedTextures,"("+t+")")}},t.prototype.getNumUsedTextures=function(){return this.numUsedTextures},t.prototype.getNumFreeTextures=function(){return this.numFreeTextures},t.prototype.dispose=function(){var t=this;if(null!=this.freeTextures){for(var e in this.freeTextures)this.freeTextures[e].forEach((function(e){t.gpgpu.deleteMatrixTexture(e)}));for(var e in this.usedTextures)this.usedTextures[e].forEach((function(e){t.gpgpu.deleteMatrixTexture(e)}));this.freeTextures=null,this.usedTextures=null,this.numUsedTextures=0,this.numFreeTextures=0}},t}();function ns(t,e){if(t===Ut.UPLOAD)return jt.PACKED_2X2_FLOAT32;if(t===Ut.RENDER||null==t)return function(t){return f().getBool("WEBGL_RENDER_FLOAT32_ENABLED")?t?jt.PACKED_2X2_FLOAT32:jt.UNPACKED_FLOAT32:t?jt.PACKED_2X2_FLOAT16:jt.UNPACKED_FLOAT16}(e);if(t===Ut.DOWNLOAD||t===Ut.PIXELS)return jt.PACKED_4X1_UNSIGNED_BYTE;throw new Error("Unknown logical texture type "+t)}function rs(t,e,n){return t[0]+"_"+t[1]+"_"+e+"_"+n}var as=function(t,e){this.variableNames=["A"];for(var n=new Array(t.length),r=0;r<n.length;r++)n[r]=t[r]*e[r];this.outputShape=n,this.rank=n.length;var a=po(this.rank),o=function(t){var e=t.length;if(e>5)throw Error("Tile for rank "+e+" is not yet supported");if(1===e)return"imod(resRC, "+t[0]+")";for(var n=["resRC.x","resRC.y","resRC.z","resRC.w","resRC.u"],r=[],a=0;a<t.length;a++)r.push("imod("+n[a]+", "+t[a]+")");return r.join()}(t);this.userCode="\n      void main() {\n        "+a+" resRC = getOutputCoords();\n        setOutput(getA("+o+"));\n      }\n    "},os=function(t,e){this.variableNames=["A"];for(var n=new Array(t.length),r=0;r<n.length;r++)n[r]=t[e[r]];this.outputShape=n,this.rank=n.length;var a=po(this.rank),o=function(t){var e=t.length;if(e>6)throw Error("Transpose for rank "+e+" is not yet supported");for(var n=["resRC.x","resRC.y","resRC.z","resRC.w","resRC.u","resRC.v"],r=new Array(e),a=0;a<t.length;a++)r[t[a]]=n[a];return r.join()}(e);this.userCode="\n    void main() {\n      "+a+" resRC = getOutputCoords();\n      setOutput(getA("+o+"));\n    }\n    "},is=function(t,e){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0;for(var n=new Array(t.length),r=0;r<n.length;r++)n[r]=t[e[r]];if(this.outputShape=n,this.rank=n.length,this.rank>6)throw Error("Packed transpose for rank "+this.rank+" is not yet supported.");var a=po(this.rank),o=Ja("rc",this.rank),i=new Array(this.rank);for(r=0;r<e.length;r++)i[e[r]]=o[r];var s="vec2("+i.slice(-2).join()+")",u="++"+o[this.rank-1]+" < "+n[this.rank-1],c="getChannel(getA("+i.join()+"), "+s+")";this.userCode="\n    void main() {\n      "+a+" rc = getOutputCoords();\n      vec4 result = vec4(0.);\n      result[0] = "+c+";\n      if("+u+") {\n        result[1] = "+c+";\n      }\n      --"+o[this.rank-1]+";\n      if(++"+o[this.rank-2]+" < "+n[this.rank-2]+") {\n        result[2] = "+c+";\n        if("+u+") {\n          result[3] = "+c+";\n        }\n      }\n      setOutput(result);\n    }\n    "},ss=1.7580993408473768,us=1.0507009873554805,cs=function(t,e){this.variableNames=["A"],this.outputShape=t,this.userCode="\n      float unaryOperation(float x) {\n        "+e+"\n      }\n\n      void main() {\n        float x = getAAtOutCoords();\n        float y = unaryOperation(x);\n\n        setOutput(y);\n      }\n    "},ls="if (isnan(x)) return x;",ps="return abs(x);",fs=ls+"\n  return (x < 0.0) ? 0.0 : x;\n",ds=ls+"\n  return (x < 0.0) ? 0.0 : min(6.0, x);\n",hs="return (x >= 0.0) ? x : (exp(x) - 1.0);",ms="return -x;",vs="return ceil(x);",gs="return floor(x);",ys="return exp(x);",xs="return exp(x) - 1.0;",bs="return x;",ws="\n  vec4 result = x * vec4(greaterThanEqual(x, vec4(0.0)));\n  bvec4 isNaN = isnan(x);\n\n  result.r = isNaN.r ? x.r : result.r;\n  result.g = isNaN.g ? x.g : result.g;\n  result.b = isNaN.b ? x.b : result.b;\n  result.a = isNaN.a ? x.a : result.a;\n\n  return result;\n",Cs="\n  vec4 result = min(x, vec4(6.)) * vec4(greaterThanEqual(x, vec4(0.0)));\n  bvec4 isNaN = isnan(x);\n\n  result.r = isNaN.r ? x.r : result.r;\n  result.g = isNaN.g ? x.g : result.g;\n  result.b = isNaN.b ? x.b : result.b;\n  result.a = isNaN.a ? x.a : result.a;\n\n  return result;\n",Es="\n  vec4 result;\n\n  result.r = (x.r >= 0.0) ? x.r : (exp(x.r) - 1.0);\n  result.g = (x.g >= 0.0) ? x.g : (exp(x.g) - 1.0);\n  result.b = (x.b >= 0.0) ? x.b : (exp(x.b) - 1.0);\n  result.a = (x.a >= 0.0) ? x.a : (exp(x.a) - 1.0);\n\n  return result;\n",Ss=function(t,e){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!0,this.outputShape=t,this.userCode="\n      vec4 unaryOperation(vec4 x) {\n        "+e+"\n      }\n\n      void main() {\n        vec4 x = getAAtOutCoords();\n        vec4 y = unaryOperation(x);\n\n        setOutput(y);\n      }\n    "},Ns=function(t){this.variableNames=["A"],this.packedInputs=!0,this.packedOutput=!1,this.outputShape=t;var e=t.length,n=Za("rc",e),r=po(e),a=function(t,e){if(1===t)return"rc";for(var n="",r=0;r<t;r++)n+=e[r],r<t-1&&(n+=",");return n}(e,n),o=n.slice(-2),i=e<=1?"rc":"vec2("+o.join(",")+")";this.userCode="\n      void main() {\n        "+r+" rc = getOutputCoords();\n        vec4 packedInput = getA("+a+");\n\n        setOutput(getChannel(packedInput, "+i+"));\n      }\n    "},Is={};function Rs(t,e){if(void 0===e&&(e=!1),"linear"===t)return"return x;";if("relu"===t)return e?ws:fs;if("elu"===t)return e?Es:hs;if("relu6"===t)return e?Cs:ds;if("prelu"===t)return e?Io:So;throw new Error("Activation "+t+" has not been implemented for the WebGL backend.")}var Ts=function(t){function e(e){var n,r=t.call(this)||this;if(r.pendingRead=new WeakMap,r.pendingDisposal=new WeakSet,r.dataRefCount=new WeakMap,r.numBytesInGPU=0,r.uploadWaitMs=0,r.downloadWaitMs=0,r.warnedAboutMemory=!1,r.pendingDeletes=0,r.disposed=!1,!f().getBool("HAS_WEBGL"))throw new Error("WebGL is not supported on this device");if(null==e){var a=Kt(f().getNumber("WEBGL_VERSION"));r.binaryCache=((n=f().getNumber("WEBGL_VERSION"))in Is||(Is[n]={}),Is[n]),r.gpgpu=new Ei(a),r.canvas=a.canvas,r.gpgpuCreatedLocally=!0}else r.gpgpu=e,r.binaryCache={},r.gpgpuCreatedLocally=!1,r.canvas=e.gl.canvas;return r.textureManager=new es(r.gpgpu),r.numMBBeforeWarning=null==f().global.screen?1024:f().global.screen.height*f().global.screen.width*window.devicePixelRatio*600/1024/1024,r.texData=new pa(r,Lt),r}return s(e,t),e.prototype.numDataIds=function(){return this.texData.numDataIds()+(this.cpuBackend?this.cpuBackend.numDataIds():0)-this.pendingDeletes},e.prototype.write=function(t,e,n){if(f().getBool("DEBUG")&&this.checkNumericalProblems(t),"complex64"===n&&null!=t)throw new Error("Cannot write to a complex64 dtype. Please use tf.complex(real, imag).");var r={};return this.texData.set(r,{shape:e,dtype:n,values:t,usage:Ut.UPLOAD}),r},e.prototype.move=function(t,e,n,r){if(f().getBool("DEBUG")&&this.checkNumericalProblems(e),"complex64"===r)throw new Error("Cannot write to a complex64 dtype. Please use tf.complex(real, imag).");this.texData.set(t,{shape:n,dtype:r,values:e,usage:Ut.UPLOAD})},e.prototype.readSync=function(t){var e=this.texData.get(t),n=e.values,r=e.dtype,a=e.complexTensors,o=e.slice,i=e.shape,s=e.isPacked;if(null!=o){var u;u=s?new Ss(i,bs):new cs(i,bs);var c=this.runWebGLProgram(u,[{dataId:t,shape:i,dtype:r}],r),l=this.readSync(c.dataId);return this.disposeData(c.dataId),l}if(null!=n)return this.convertAndCacheOnCPU(t);if("string"===r)return n;var p,f,d=null!=this.activeTimers;return d&&(p=st()),f="complex64"===r?_a(a.real.dataSync(),a.imag.dataSync()):this.getValuesFromTexture(t),d&&(this.downloadWaitMs+=st()-p),this.convertAndCacheOnCPU(t,f)},e.prototype.read=function(t){return u(this,void 0,void 0,(function(){var e,n,r,a,o,i,s,u,l,p,d,h,m,v,g,y,x,b,w,C,E,S;return c(this,(function(c){switch(c.label){case 0:if(this.pendingRead.has(t))return e=this.pendingRead.get(t),[2,new Promise((function(t){return e.push(t)}))];if(n=this.texData.get(t),r=n.values,a=n.shape,o=n.slice,i=n.dtype,s=n.complexTensors,u=n.isPacked,null!=o)return void 0,l=u?new Ss(a,bs):new cs(a,bs),p=this.runWebGLProgram(l,[{dataId:t,shape:a,dtype:i}],i),d=this.read(p.dataId),this.disposeData(p.dataId),[2,d];if(null!=r)return[2,this.convertAndCacheOnCPU(t)];if(!f().getBool("WEBGL_DOWNLOAD_FLOAT_ENABLED")&&2===f().getNumber("WEBGL_VERSION"))throw new Error("tensor.data() with WEBGL_DOWNLOAD_FLOAT_ENABLED=false and WEBGL_VERSION=2 not yet supported.");return h=null,"complex64"!==i&&f().get("WEBGL_BUFFER_SUPPORTED")&&(m=this.decode(t),v=this.texData.get(m.dataId),h=(S=this.gpgpu).createBufferFromTexture.apply(S,[v.texture].concat(Yt(a)))),this.pendingRead.set(t,[]),"complex64"===i?[3,2]:[4,this.gpgpu.createAndWaitForFence()];case 1:c.sent(),c.label=2;case 2:return"complex64"!==i?[3,4]:[4,Promise.all([s.real.data(),s.imag.data()])];case 3:return y=c.sent(),x=y[0],b=y[1],g=_a(x,b),[3,5];case 4:null==h?g=this.getValuesFromTexture(t):(w=D(a),g=this.gpgpu.downloadFloat32MatrixFromBuffer(h,w)),c.label=5;case 5:return null!=m&&this.disposeData(m.dataId),C=this.convertAndCacheOnCPU(t,g),E=this.pendingRead.get(t),this.pendingRead.delete(t),E.forEach((function(t){return t(C)})),this.pendingDisposal.has(t)&&(this.pendingDisposal.delete(t),this.disposeData(t),this.pendingDeletes--),[2,C]}}))}))},e.prototype.checkNumericalProblems=function(t){if(null!=t)for(var e=0;e<t.length;e++){var n=t[e];if(!Zt(n)){if(f().getBool("WEBGL_RENDER_FLOAT32_CAPABLE"))throw Error("The value "+n+" cannot be represented with your current settings. Consider enabling float32 rendering: 'tf.env().set('WEBGL_RENDER_FLOAT32_ENABLED', true);'");throw Error("The value "+n+" cannot be represented on this device.")}}},e.prototype.getValuesFromTexture=function(t){var e,n=this.texData.get(t),r=n.shape,a=n.dtype,o=n.isPacked,i=D(r);if(f().getBool("WEBGL_DOWNLOAD_FLOAT_ENABLED")){var s=this.decode(t),u=this.texData.get(s.dataId),c=(e=this.gpgpu).downloadMatrixFromPackedTexture.apply(e,[u.texture].concat(Yt(r))).subarray(0,i);return this.disposeData(s.dataId),c}var l=f().getBool("WEBGL_PACK")&&!0===o,p=l?Te(r):r,d=l?new Jo(p):new Qo(p),h=this.runWebGLProgram(d,[{shape:p,dtype:a,dataId:t}],"float32"),m=this.texData.get(h.dataId),v=this.gpgpu.downloadByteEncodedFloatMatrixFromOutputTexture(m.texture,m.texShape[0],m.texShape[1]).subarray(0,i);return this.disposeData(h.dataId),v},e.prototype.time=function(t){return u(this,void 0,void 0,(function(){var e,n,r,a,o,i,s;return c(this,(function(u){switch(u.label){case 0:return e=this.activeTimers,n=[],r=!1,null==this.programTimersStack?(this.programTimersStack=n,r=!0):this.activeTimers.push(n),this.activeTimers=n,t(),a=O(this.activeTimers.map((function(t){return t.query}))).filter((function(t){return null!=t})),o=O(this.activeTimers.map((function(t){return t.name}))).filter((function(t){return null!=t})),this.activeTimers=e,r&&(this.programTimersStack=null),[4,Promise.all(a)];case 1:return i=u.sent(),s={uploadWaitMs:this.uploadWaitMs,downloadWaitMs:this.downloadWaitMs,kernelMs:R(i),getExtraProfileInfo:function(){return i.map((function(t,e){return{name:o[e],ms:t}})).map((function(t){return t.name+": "+t.ms})).join(", ")},wallMs:null},this.uploadWaitMs=0,this.downloadWaitMs=0,[2,s]}}))}))},e.prototype.memory=function(){return{unreliable:!1,numBytesInGPU:this.numBytesInGPU}},e.prototype.startTimer=function(){return f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?this.gpgpu.beginQuery():{startMs:st(),endMs:null}},e.prototype.endTimer=function(t){return f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?(this.gpgpu.endQuery(),t):(t.endMs=st(),t)},e.prototype.getQueryTime=function(t){return u(this,void 0,void 0,(function(){var e;return c(this,(function(n){return f().getNumber("WEBGL_DISJOINT_QUERY_TIMER_EXTENSION_VERSION")>0?[2,this.gpgpu.waitForQueryAndGetTime(t)]:[2,(e=t).endMs-e.startMs]}))}))},e.prototype.disposeData=function(t){if(!this.pendingDisposal.has(t)){if(this.pendingRead.has(t))return this.pendingDisposal.add(t),void this.pendingDeletes++;if(this.texData.has(t)){this.releaseGPUData(t);var e=this.texData.get(t).complexTensors;null!=e&&(e.real.dispose(),e.imag.dispose()),this.texData.delete(t)}}},e.prototype.releaseGPUData=function(t){var e=this.texData.get(t),n=e.texture,r=e.dtype,a=e.texShape,o=e.usage,i=e.isPacked,s=e.slice,u=s&&s.origDataId||t,c=this.dataRefCount.get(u);c>1?this.dataRefCount.set(u,c-1):(this.dataRefCount.delete(u),null!=n&&(this.numBytesInGPU-=this.computeBytes(a,r),this.textureManager.releaseTexture(n,a,o,i)));var l=this.texData.get(t);l.texture=null,l.texShape=null,l.isPacked=!1,l.slice=null},e.prototype.getTexture=function(t){return this.uploadToGPU(t),this.texData.get(t).texture},e.prototype.getDataInfo=function(t){return this.texData.get(t)},e.prototype.getCPUBackend=function(){return f().getBool("WEBGL_CPU_FORWARD")?(null==this.cpuBackend&&(this.cpuBackend=Lt.findBackend("cpu")),this.cpuBackend):null},e.prototype.shouldExecuteOnCPU=function(t,e){var n=this;return void 0===e&&(e=128),null!=this.getCPUBackend()&&t.every((function(t){return null==n.texData.get(t.dataId).texture&&t.size<e}))},e.prototype.getGPGPUContext=function(){return this.gpgpu},e.prototype.complex=function(t,e){var n=this.makeOutput(t.shape,"complex64");return this.texData.get(n.dataId).complexTensors={real:Lt.keep(t.clone()),imag:Lt.keep(e.clone())},n},e.prototype.real=function(t){return this.texData.get(t.dataId).complexTensors.real.clone()},e.prototype.imag=function(t){return this.texData.get(t.dataId).complexTensors.imag.clone()},e.prototype.slice=function(t,e,n){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.slice(t,e,n);if(0===D(n))return An([],n,t.dtype);var r=this.texData.get(t.dataId).isPacked,a=Zr(t.shape,e,n);if(r||!a){var o=f().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new Zi(n):new Qi(n),i=o.getCustomSetupFunc(e);return this.compileAndRun(o,[t],null,i)}return this.uploadToGPU(t.dataId),this.shallowSlice(t,e,n)},e.prototype.shallowSlice=function(t,e,n){var r=this.texData.get(t.dataId),a=this.makeOutput(n,t.dtype),o=this.texData.get(a.dataId);Object.assign(o,r),o.shape=n,o.dtype=t.dtype;var i=ta(e,t.strides);r.slice&&(i+=r.slice.flatOffset),o.slice={flatOffset:i,origDataId:r.slice&&r.slice.origDataId||t.dataId};var s=this.dataRefCount.get(o.slice.origDataId)||1;return this.dataRefCount.set(o.slice.origDataId,s+1),a},e.prototype.stridedSlice=function(t,e,n,r){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.stridedSlice(t,e,n,r);var a=$r(e,n,r);if(a.some((function(t){return 0===t})))return An([],a);var o=new ts(e,r,a);return this.compileAndRun(o,[t])},e.prototype.reverse=function(t,e){var n=f().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new Ki(t.shape,e):new qi(t.shape,e);return this.compileAndRun(n,[t])},e.prototype.concat=function(t,e){if("complex64"===t[0].dtype){var n=t.map((function(t){return Tn(t)})),r=t.map((function(t){return kn(t)}));return Rn(this.concat(n,e),this.concat(r,e))}if(this.shouldExecuteOnCPU(t))return this.cpuBackend.concat(t,e);if(1===t.length)return t[0];if(t.length>f().getNumber("WEBGL_MAX_TEXTURES_IN_SHADER")){var a=Math.floor(t.length/2),o=this.concat(t.slice(0,a),e),i=this.concat(t.slice(a),e);return this.concat([o,i],e)}if(f().getBool("WEBGL_PACK_ARRAY_OPERATIONS")&&t[0].rank>1){var s=new Do(t.map((function(t){return t.shape})),e);return this.compileAndRun(s,t)}var u=Nn(t.map((function(t){return t.shape})),e),c=t.map((function(t){return t.as2D(-1,D(t.shape.slice(e)))})),l=new Oo(c.map((function(t){return t.shape})));return this.compileAndRun(l,c).reshape(u)},e.prototype.neg=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.neg(t);if(f().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,ms,t.dtype);var e=new cs(t.shape,ms);return this.compileAndRun(e,[t])},e.prototype.batchMatMul=function(t,e,n,r){var a=n?t.shape[2]:t.shape[1],o=r?e.shape[1]:e.shape[2],i=n?t.shape[1]:t.shape[2],s=t.shape[0];if((1===a||1===o)&&i>1e3){n&&(t=t.transpose([0,2,1])),r&&(e=e.transpose([0,2,1]));var u=1===o?t:t.as3D(s,i,1),c=1===o?2:1,l=1===o?e.as3D(s,1,i):e;return this.multiply(u,l).sum(c,!0)}var p=kt(t.dtype,e.dtype),f=new Oi(t.shape,[s,a,o],n,r);return this.compileAndRun(f,[t,e],p)},e.prototype.fusedBatchMatMul=function(t){var e=t.a,n=t.b,r=t.transposeA,a=t.transposeB,o=t.bias,i=t.activation,s=t.preluActivationWeights,u=r?e.shape[2]:e.shape[1],c=a?n.shape[1]:n.shape[2],l=e.shape[0],p=kt(e.dtype,n.dtype),f=null!=o,d=null!=s,h=i?Rs(i,!0):null,m=new Oi(e.shape,[l,u,c],r,a,f,h,d),v=[e,n];return o&&v.push(o),s&&v.push(s),this.compileAndRun(m,v,p)},e.prototype.multiply=function(t,e){if("complex64"===t.dtype){var n=this.texData.get(t.dataId),r=this.texData.get(e.dataId),a=new bo("return areal * breal - aimag * bimag;",t.shape,e.shape),o=new bo("return areal * bimag + aimag * breal;",t.shape,e.shape),i=[this.makeComplexComponentTensorInfo(t,n.complexTensors.real),this.makeComplexComponentTensorInfo(t,n.complexTensors.imag),this.makeComplexComponentTensorInfo(e,r.complexTensors.real),this.makeComplexComponentTensorInfo(e,r.complexTensors.imag)],s=this.compileAndRun(a,i),u=this.compileAndRun(o,i),c=this.complex(s,u);return s.dispose(),u.dispose(),c}if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.multiply(t,e);if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,Eo,t.dtype);var l=new No(Eo,t.shape,e.shape);return this.compileAndRun(l,[t,e],t.dtype)},e.prototype.batchNormalization=function(t,e,n,r,a,o){var i=[t,e,n],s=null;null!=o&&(s=o.shape,i.push(o));var u=null;if(null!=a&&(u=a.shape,i.push(a)),f().getBool("WEBGL_PACK_NORMALIZATION")){var c=new xo(t.shape,e.shape,n.shape,s,u,r);return this.compileAndRun(c,i)}var l=new yo(t.shape,e.shape,n.shape,s,u,r);return this.compileAndRun(l,i)},e.prototype.localResponseNormalization4D=function(t,e,n,r,a){var o=f().getBool("WEBGL_PACK_NORMALIZATION")?new Ti(t.shape,e,n,r,a):new Ii(t.shape,e,n,r,a);return this.compileAndRun(o,[t])},e.prototype.LRNGrad=function(t,e,n,r,a,o,i){var s=new Ri(e.shape,r,a,o,i);return this.compileAndRun(s,[e,n,t])},e.prototype.tile=function(t,e){if("string"===t.dtype){var n=this.readSync(t.dataId).map((function(t){return lt(t)}));return qa(pr(t.shape,t.dtype,n),e)}var r=new as(t.shape,e);return this.compileAndRun(r,[t])},e.prototype.pad=function(t,e,n){var r=f().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new Bi(t.shape,e,n):new Mi(t.shape,e,n);return this.compileAndRun(r,[t])},e.prototype.transpose=function(t,e){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.transpose(t,e);var n=f().getBool("WEBGL_PACK_ARRAY_OPERATIONS")?new is(t.shape,e):new os(t.shape,e);return this.compileAndRun(n,[t])},e.prototype.gather=function(t,e,n){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.gather(t,e,n);var r=new ri(t.shape,e.size,n);return this.compileAndRun(r,[t,e])},e.prototype.batchToSpaceND=function(t,e,n){T(t.rank<=4,(function(){return"batchToSpaceND for rank > 4 with a WebGL backend not implemented yet"}));var r=e.reduce((function(t,e){return t*e})),a=Wr(t.shape,e,r),o=zr(a.length,e.length),i=Ur(t.shape,e,r),s=jr(n,e.length),u=Gr(i,n,e.length);return t.reshape(a).transpose(o).reshape(i).slice(s,u)},e.prototype.spaceToBatchND=function(t,e,n){T(t.rank<=4,(function(){return"spaceToBatchND for rank > 4 with a WebGL backend not implemented yet"}));var r=e.reduce((function(t,e){return t*e})),a=[[0,0]];a.push.apply(a,n);for(var o=1+e.length;o<t.shape.length;++o)a.push([0,0]);var i=t.pad(a),s=Wr(i.shape,e,r,!1),u=zr(s.length,e.length,!1),c=Ur(i.shape,e,r,!1);return i.reshape(s).transpose(u).reshape(c)},e.prototype.reduce=function(t,e,n){var r=t.shape[0],a=t.shape[1],o=qr(a),i=new Vi({windowSize:o,inSize:a,batchSize:r},e),s=this.compileAndRun(i,[t],n);return 1===s.shape[1]?s:this.reduce(s,e,n)},e.prototype.argReduce=function(t,e,n){void 0===n&&(n=null);var r=t.shape[0],a=t.shape[1];null!=n&&(r=n.shape[0],a=n.shape[1]);var o=qr(a),i=new Qa({windowSize:o,inSize:a,batchSize:r},e,null==n),s=[t];null!=n&&s.push(n);var u=this.compileAndRun(i,s,"int32");return 1===u.shape[1]?u:this.argReduce(t,e,u)},e.prototype.argReducePacked=function(t,e,n){void 0===n&&(n=null);var r=null!=n?n.shape:t.shape,a=qr(r[r.length-1]),o=new mo(r,a,e,null==n),i=null==n?[t]:[t,n],s=this.compileAndRun(o,i,"int32");return s.rank===t.rank?this.argReducePacked(t,e,s):s},e.prototype.sum=function(t,e){bn("sum",e,t.rank);var n=yn(t.shape,e),r=n[0],a=D(n[1]),o=t.as2D(-1,a),i=At(t.dtype);return this.reduce(o,"sum",i).reshape(r)},e.prototype.prod=function(t,e){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.prod(t,e);var n=yn(t.shape,e),r=n[0],a=D(n[1]),o=t.as2D(-1,a),i=At(t.dtype);return this.reduce(o,"prod",i).reshape(r)},e.prototype.unsortedSegmentSum=function(t,e,n){var r=0,a=wn([r],t.rank),o=t;null!=a&&(o=t.transpose(a),r=En(1,t.rank)[0]);var i=function(t,e,n){for(var r=[],a=t.length,o=0;o<a;o++)o!==e?r.push(t[o]):r.push(n);return r}(o.shape,r,n),s=D([o.shape[r]]),u=o.as2D(-1,s),c=At(t.dtype),l=this.segOpCompute(u,"unsortedSegmentSum",e,c,n).reshape(i);return null!=a&&(l=l.transpose(Cn(a))),l},e.prototype.segOpCompute=function(t,e,n,r,a){var o=t.shape[0],i=t.shape[1],s=function(t,e){var n,r=!1;for(t<=30?(n=t,r=!0):n=et(t,Math.floor(Math.sqrt(t)));!r;)n>e||n===t?r=!0:n=et(t,n+1);return n}(i,a),u=new Yi({windowSize:s,inSize:i,batchSize:o,numSegments:a},e),c=this.compileAndRun(u,[t,n],r);return c.shape[1]===a?c:(n=Gn(0,a).tile([i/s]),this.segOpCompute(c,e,n,r,a))},e.prototype.argMinMaxReduce=function(t,e,n){var r=[e];if(bn("arg"+n.charAt(0).toUpperCase()+n.slice(1),r,t.rank),!f().getBool("WEBGL_PACK_REDUCE")||t.rank<=2){var a=yn(t.shape,r),o=a[0],i=D(a[1]),s=t.as2D(-1,i);return this.argReduce(s,n).reshape(o)}return this.argReducePacked(t,n)},e.prototype.argMin=function(t,e){return this.argMinMaxReduce(t,e,"min")},e.prototype.argMax=function(t,e){return this.argMinMaxReduce(t,e,"max")},e.prototype.cumsum=function(t,e,n,r){if(e!==t.rank-1)throw new Error("WebGL cumsum shader expects an inner-most axis="+(t.rank-1)+" but got axis="+e);var a=new Ho(t.shape,n,r);return this.compileAndRun(a,[t])},e.prototype.equal=function(t,e){if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  return vec4(equal(a, b));\n","bool");var n=new No("return float(a == b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},e.prototype.notEqual=function(t,e){if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  return vec4(notEqual(a, b));\n","bool");var n=new No("return float(a != b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},e.prototype.less=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.less(t,e);if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  return vec4(lessThan(a, b));\n","bool");var n=new No("return float(a < b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},e.prototype.lessEqual=function(t,e){if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  return vec4(lessThanEqual(a, b));\n","bool");var n=new No("return float(a <= b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},e.prototype.greater=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.greater(t,e);if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  return vec4(greaterThan(a, b));\n","bool");var n=new No("return float(a > b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},e.prototype.greaterEqual=function(t,e){if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  return vec4(greaterThanEqual(a, b));\n","bool");var n=new No("return float(a >= b);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},e.prototype.logicalNot=function(t){var e=new cs(t.shape,"return float(!(x >= 1.0));");return this.compileAndRun(e,[t])},e.prototype.logicalAnd=function(t,e){if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  return vec4(\n    vec4(greaterThanEqual(a, vec4(1.0))) *\n    vec4(greaterThanEqual(b, vec4(1.0))));\n","bool");var n=new No("return float(a >= 1.0 && b >= 1.0);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},e.prototype.logicalOr=function(t,e){if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  return min(\n    vec4(greaterThanEqual(a, vec4(1.0))) +\n    vec4(greaterThanEqual(b, vec4(1.0))),\n    vec4(1.0));\n","bool");var n=new No("return float(a >= 1.0 || b >= 1.0);",t.shape,e.shape);return this.compileAndRun(n,[t,e],"bool")},e.prototype.select=function(t,e,n){var r=new $i(t.rank,e.shape,e.rank);return this.compileAndRun(r,[t,e,n],kt(e.dtype,n.dtype))},e.prototype.where=function(t){pn("tf.where() in webgl locks the UI thread. Call tf.whereAsync() instead");var e=t.dataSync();return Xa(t.shape,e)},e.prototype.topk=function(t,e,n){return Ka(t.dataSync(),t.shape,t.dtype,e)},e.prototype.min=function(t,e){bn("min",e,t.rank);var n=yn(t.shape,e),r=n[0],a=D(n[1]),o=t.as2D(-1,a);return this.reduce(o,"min",o.dtype).reshape(r)},e.prototype.minimum=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.minimum(t,e);var n=f().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Ro("\n  vec4 result = vec4(min(a, b));\n  vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n  \n  result.r = isNaN.r > 0. ? NAN : result.r;\n  result.g = isNaN.g > 0. ? NAN : result.g;\n  result.b = isNaN.b > 0. ? NAN : result.b;\n  result.a = isNaN.a > 0. ? NAN : result.a;\n\n  return result;\n",t.shape,e.shape):new No("\n  if (isnan(a)) return a;\n  if (isnan(b)) return b;\n\n  return min(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},e.prototype.mod=function(t,e){var n=f().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Ro("\n  vec4 result = mod(a, b);\n  vec4 isNaN = vec4(equal(b, vec4(0.0)));\n  \n  result.r = isNaN.r > 0. ? NAN : result.r;\n  result.g = isNaN.g > 0. ? NAN : result.g;\n  result.b = isNaN.b > 0. ? NAN : result.b;\n  result.a = isNaN.a > 0. ? NAN : result.a;\n\n  return result;\n",t.shape,e.shape):new No("if (b == 0.0) return NAN;\n  return mod(a, b);",t.shape,e.shape);return this.compileAndRun(n,[t,e])},e.prototype.max=function(t,e){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.max(t,e);bn("max",e,t.rank);var n=yn(t.shape,e),r=n[0],a=D(n[1]),o=t.as2D(-1,a);return this.reduce(o,"max",o.dtype).reshape(r)},e.prototype.maximum=function(t,e){if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.maximum(t,e);var n=f().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Ro("\n  vec4 result = vec4(max(a, b));\n  vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n  \n  result.r = isNaN.r > 0. ? NAN : result.r;\n  result.g = isNaN.g > 0. ? NAN : result.g;\n  result.b = isNaN.b > 0. ? NAN : result.b;\n  result.a = isNaN.a > 0. ? NAN : result.a;\n\n  return result;\n",t.shape,e.shape):new No("\n  if (isnan(a)) return a;\n  if (isnan(b)) return b;\n\n  return max(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},e.prototype.all=function(t,e){bn("all",e,t.rank);var n=yn(t.shape,e),r=n[0],a=D(n[1]),o=t.as2D(-1,a);return this.reduce(o,"all",o.dtype).reshape(r)},e.prototype.any=function(t,e){bn("any",e,t.rank);var n=yn(t.shape,e),r=n[0],a=D(n[1]),o=t.as2D(-1,a);return this.reduce(o,"any",o.dtype).reshape(r)},e.prototype.squaredDifference=function(t,e){var n=f().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Ro("return (a - b) * (a - b);",t.shape,e.shape):new No("return (a - b) * (a - b);",t.shape,e.shape);return this.compileAndRun(n,[t,e])},e.prototype.realDivide=function(t,e){if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  // vec4 one = vec4(equal(a, b));\n  // return one + (vec4(1.0) - one) * a / b;\n  vec4 result = a / b;\n  if(a.x == b.x) {\n    result.x = 1.;\n  }\n  if(a.y == b.y) {\n    result.y = 1.;\n  }\n  if(a.z == b.z) {\n    result.z = 1.;\n  }\n  if(a.w == b.w) {\n    result.w = 1.;\n  }\n\n  return result;\n","float32",!0);var n=new No("\nif (a == b) {\n  return 1.0;\n};\nreturn a / b;",t.shape,e.shape);return this.compileAndRun(n,[t,e],"float32")},e.prototype.floorDiv=function(t,e){if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,"\n  ivec4 ia = round(a);\n  ivec4 ib = round(b);\n  bvec4 cond = notEqual(ib, ivec4(0));\n  ivec4 result = ivec4(0);\n  vec4 s = sign(a) * sign(b);\n\n  // Windows (D3D) wants guaranteed non-zero int division at compile-time.\n  if (cond[0]) {\n    result[0] = idiv(ia[0], ib[0], s[0]);\n  }\n  if (cond[1]) {\n    result[1] = idiv(ia[1], ib[1], s[1]);\n  }\n  if (cond[2]) {\n    result[2] = idiv(ia[2], ib[2], s[2]);\n  }\n  if (cond[3]) {\n    result[3] = idiv(ia[3], ib[3], s[3]);\n  }\n  return vec4(result);\n","int32");var n=new No("\n  float s = sign(a) * sign(b);\n  int ia = round(a);\n  int ib = round(b);\n  if (ib != 0) {\n    // Windows (D3D) wants guaranteed non-zero int division at compile-time.\n    return float(idiv(ia, ib, s));\n  } else {\n    return NAN;\n  }\n",t.shape,e.shape);return this.compileAndRun(n,[t,e],"int32")},e.prototype.add=function(t,e){if("complex64"===t.dtype&&"complex64"===e.dtype)return this.complexSeparableBinaryOp(t,e,wo);if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.add(t,e);var n=kt(t.dtype,e.dtype);if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,wo,n);var r=new No(wo,t.shape,e.shape);return this.compileAndRun(r,[t,e],n)},e.prototype.packedUnaryOp=function(t,e,n){var r=new Ss(t.shape,e);return this.compileAndRun(r,[t],n)},e.prototype.packedBinaryOp=function(t,e,n,r,a){void 0===a&&(a=!1);var o=new Ro(n,t.shape,e.shape,a);return this.compileAndRun(o,[t,e],r)},e.prototype.complexSeparableBinaryOp=function(t,e,n){var r=this,a=this.texData.get(t.dataId),o=this.texData.get(e.dataId),i=[[a.complexTensors.real,o.complexTensors.real],[a.complexTensors.imag,o.complexTensors.imag]].map((function(a){var o=a[0],i=a[1],s=r.makeComplexComponentTensorInfo(t,o),u=r.makeComplexComponentTensorInfo(e,i),c=new No(n,t.shape,e.shape);return r.compileAndRun(c,[s,u],kt(o.dtype,i.dtype))})),s=i[0],u=i[1],c=this.complex(s,u);return s.dispose(),u.dispose(),c},e.prototype.makeComplexComponentTensorInfo=function(t,e){return{dataId:e.dataId,dtype:e.dtype,shape:t.shape}},e.prototype.addN=function(t){if(1===t.length)return t[0];if(t.length>f().get("WEBGL_MAX_TEXTURES_IN_SHADER")){var e=Math.floor(t.length/2),n=this.addN(t.slice(0,e)),r=this.addN(t.slice(e));return this.addN([n,r])}var a=t.map((function(t){return t.dtype})).reduce((function(t,e){return kt(t,e)})),o=t.map((function(t){return t.shape})),i=f().getBool("WEBGL_PACK")?new $a(t[0].shape,o):new Ya(t[0].shape,o);return this.compileAndRun(i,t,a)},e.prototype.subtract=function(t,e){if("complex64"===t.dtype&&"complex64"===e.dtype)return this.complexSeparableBinaryOp(t,e,Co);if(this.shouldExecuteOnCPU([t,e]))return this.cpuBackend.subtract(t,e);var n=kt(t.dtype,e.dtype);if(f().getBool("WEBGL_PACK_BINARY_OPERATIONS"))return this.packedBinaryOp(t,e,Co,t.dtype);var r=new No(Co,t.shape,e.shape);return this.compileAndRun(r,[t,e],n)},e.prototype.pow=function(t,e){var n=f().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Ro("\n  // isModRound1 has 1 for components with round(mod(b, 2.0)) == 1, 0 otherwise.\n  vec4 isModRound1 = vec4(equal(round(mod(b, 2.0)), ivec4(1)));\n  vec4 multiplier = sign(a) * isModRound1 + (vec4(1.0) - isModRound1);\n  vec4 result = multiplier * pow(abs(a), b);\n\n  // Ensure that a^0 = 1, including 0^0 = 1 as this correspond to TF and JS\n  bvec4 isExpZero = equal(b, vec4(0.0));\n  result.r = isExpZero.r ? 1.0 : result.r;\n  result.g = isExpZero.g ? 1.0 : result.g;\n  result.b = isExpZero.b ? 1.0 : result.b;\n  result.a = isExpZero.a ? 1.0 : result.a;\n\n  vec4 isNaN = vec4(lessThan(a, vec4(0.0))) * vec4(lessThan(floor(b), b));\n  \n  result.r = isNaN.r > 0. ? NAN : result.r;\n  result.g = isNaN.g > 0. ? NAN : result.g;\n  result.b = isNaN.b > 0. ? NAN : result.b;\n  result.a = isNaN.a > 0. ? NAN : result.a;\n\n  return result;\n",t.shape,e.shape):new No("\nif(a < 0.0 && floor(b) < b){\n  return NAN;\n}\nif (b == 0.0) {\n  return 1.0;\n}\nreturn (round(mod(b, 2.0)) != 1) ?\n    pow(abs(a), b) : sign(a) * pow(abs(a), b);\n",t.shape,e.shape),r=kt(t.dtype,e.dtype);return this.compileAndRun(n,[t,e],r)},e.prototype.ceil=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.ceil(t);if(f().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,vs,t.dtype);var e=new cs(t.shape,vs);return this.compileAndRun(e,[t])},e.prototype.floor=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.floor(t);if(f().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,gs,t.dtype);var e=new cs(t.shape,gs);return this.compileAndRun(e,[t])},e.prototype.sign=function(t){var e=new cs(t.shape,"\n  if (isnan(x)) { return 0.0; }\n  return sign(x);\n");return this.compileAndRun(e,[t])},e.prototype.isNaN=function(t){var e=new cs(t.shape,"return float(isnan(x));");return this.compileAndRun(e,[t],"bool")},e.prototype.isInf=function(t){var e=new cs(t.shape,"return float(isinf(x));");return this.compileAndRun(e,[t],"bool")},e.prototype.isFinite=function(t){var e=new cs(t.shape,"return float(!isnan(x) && !isinf(x));");return this.compileAndRun(e,[t],"bool")},e.prototype.round=function(t){var e=new cs(t.shape,"\n  // OpenGL ES does not support round function.\n  // The algorithm is based on banker's rounding.\n  float base = floor(x);\n  if ((x - base) < 0.5) {\n    return floor(x);\n  } else if ((x - base) > 0.5) {\n    return ceil(x);\n  } else {\n    if (mod(base, 2.0) == 0.0) {\n      return base;\n    } else {\n      return base + 1.0;\n    }\n  }\n");return this.compileAndRun(e,[t])},e.prototype.exp=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.exp(t);if(f().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,ys,t.dtype);var e=new cs(t.shape,ys);return this.compileAndRun(e,[t])},e.prototype.expm1=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.expm1(t);if(f().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,xs,t.dtype);var e=new cs(t.shape,xs);return this.compileAndRun(e,[t])},e.prototype.log=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.log(t);if(f().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,"\n  vec4 result = log(x);\n  vec4 isNaN = vec4(lessThan(x, vec4(0.0)));\n  result.r = isNaN.r == 1.0 ? NAN : result.r;\n  result.g = isNaN.g == 1.0 ? NAN : result.g;\n  result.b = isNaN.b == 1.0 ? NAN : result.b;\n  result.a = isNaN.a == 1.0 ? NAN : result.a;\n\n  return result;\n",t.dtype);var e=new cs(t.shape,"if (x < 0.0) return NAN;\n  return log(x);");return this.compileAndRun(e,[t])},e.prototype.log1p=function(t){var e=new cs(t.shape,"return log(1.0 + x);");return this.compileAndRun(e,[t])},e.prototype.sqrt=function(t){var e=new cs(t.shape,"return sqrt(x);");return this.compileAndRun(e,[t])},e.prototype.rsqrt=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.rsqrt(t);var e=new cs(t.shape,"return inversesqrt(x);");return this.compileAndRun(e,[t])},e.prototype.reciprocal=function(t){var e=new cs(t.shape,"return 1.0 / x;");return this.compileAndRun(e,[t])},e.prototype.relu=function(t){var e;return e=f().getBool("WEBGL_PACK")?new Ss(t.shape,ws):new cs(t.shape,fs),this.compileAndRun(e,[t])},e.prototype.relu6=function(t){var e;return e=f().getBool("WEBGL_PACK")?new Ss(t.shape,Cs):new cs(t.shape,ds),this.compileAndRun(e,[t])},e.prototype.prelu=function(t,e){var n=f().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Ro(Io,t.shape,e.shape):new No(So,t.shape,e.shape);return this.compileAndRun(n,[t,e])},e.prototype.elu=function(t){if(f().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,Es,t.dtype);var e=new cs(t.shape,hs);return this.compileAndRun(e,[t])},e.prototype.eluDer=function(t,e){var n=f().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Ro("\n  vec4 bGTEZero = vec4(greaterThanEqual(b, vec4(0.)));\n  return (bGTEZero * a) + ((vec4(1.0) - bGTEZero) * (a * (b + vec4(1.0))));\n",t.shape,e.shape):new No("return (b >= 1.0) ? a : a * (b + 1.0);",t.shape,e.shape);return this.compileAndRun(n,[t,e])},e.prototype.selu=function(t){var e=new cs(t.shape,"\n  // Stable and Attracting Fixed Point (0, 1) for Normalized Weights.\n  // see: https://arxiv.org/abs/1706.02515\n  float scaleAlpha = 1.7580993408473768;\n  float scale = 1.0507009873554805;\n  return (x >= 0.0) ? scale * x : scaleAlpha * (exp(x) - 1.0);\n");return this.compileAndRun(e,[t])},e.prototype.int=function(t){var e=new cs(t.shape,"return float(int(x));");return this.compileAndRun(e,[t],"int32")},e.prototype.clip=function(t,e,n){var r,a=(r=f().getBool("WEBGL_PACK_CLIP")?new ko(t.shape):new To(t.shape)).getCustomSetupFunc(e,n);return this.compileAndRun(r,[t],null,a)},e.prototype.abs=function(t){if(this.shouldExecuteOnCPU([t]))return this.cpuBackend.abs(t);if(f().getBool("WEBGL_PACK_UNARY_OPERATIONS"))return this.packedUnaryOp(t,ps,t.dtype);var e=new cs(t.shape,ps);return this.compileAndRun(e,[t])},e.prototype.complexAbs=function(t){var e=this.texData.get(t.dataId),n=new Ao(t.shape),r=[this.makeComplexComponentTensorInfo(t,e.complexTensors.real),this.makeComplexComponentTensorInfo(t,e.complexTensors.imag)];return this.compileAndRun(n,r)},e.prototype.sigmoid=function(t){var e=new cs(t.shape,"return 1.0 / (1.0 + exp(-1.0 * x));");return this.compileAndRun(e,[t])},e.prototype.softplus=function(t){var e=new cs(t.shape,"\n  float epsilon = 1.1920928955078125e-7;\n  float threshold = log(epsilon) + 2.0;\n\n  bool too_large = x > -threshold;\n  bool too_small = x < threshold;\n\n  float result;\n  float exp_x = exp(x);\n\n  if (too_large){\n    result = x;\n  }\n  else if (too_small){\n    result = exp_x;\n  }\n  else{\n    result = log(exp_x + 1.0);\n  }\n  return result;\n");return this.compileAndRun(e,[t])},e.prototype.sin=function(t){var e=new cs(t.shape,"if (isnan(x)) return x;\n  return sin(x);\n");return this.compileAndRun(e,[t])},e.prototype.cos=function(t){var e=new cs(t.shape,"if (isnan(x)) return x;\n  return cos(x);\n");return this.compileAndRun(e,[t])},e.prototype.tan=function(t){var e=new cs(t.shape,"return tan(x);");return this.compileAndRun(e,[t])},e.prototype.asin=function(t){var e=new cs(t.shape,"if (isnan(x)) return x;\n  if (abs(x) > 1.) {\n    return NAN;\n  }\n  return asin(x);\n");return this.compileAndRun(e,[t])},e.prototype.acos=function(t){var e=new cs(t.shape,"if (isnan(x)) return x;\n  if (abs(x) > 1.) {\n    return NAN;\n  }\n  return acos(x);\n");return this.compileAndRun(e,[t])},e.prototype.atan=function(t){var e=new cs(t.shape,"if (isnan(x)) return x;\n  return atan(x);\n");return this.compileAndRun(e,[t])},e.prototype.atan2=function(t,e){var n=f().getBool("WEBGL_PACK_BINARY_OPERATIONS")?new Ro("\n  vec4 result = atan(a, b);\n  vec4 isNaN = min(vec4(isnan(a)) + vec4(isnan(b)), vec4(1.0));\n  \n  result.r = isNaN.r > 0. ? 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NAN : result.a;\n\n  return result;\n",t.shape,e.shape):new No("\n  if (isnan(a)) return a;\n  if (isnan(b)) return b;\n\n  return atan(a, b);\n",t.shape,e.shape);return this.compileAndRun(n,[t,e])},e.prototype.sinh=function(t){var e=new cs(t.shape,"\n  float e2x = exp(x);\n  return (e2x - 1.0 / e2x) / 2.0;\n");return this.compileAndRun(e,[t])},e.prototype.cosh=function(t){var e=new cs(t.shape,"\n  float e2x = exp(-x);\n  return (e2x + 1.0 / e2x) / 2.0;\n");return this.compileAndRun(e,[t])},e.prototype.tanh=function(t){var e=new cs(t.shape,"\n  float e2x = exp(-2.0 * abs(x));\n  return sign(x) * (1.0 - e2x) / (1.0 + e2x);\n");return this.compileAndRun(e,[t])},e.prototype.asinh=function(t){var e=new cs(t.shape,"if (isnan(x)) return x;return log(x + sqrt(x * x + 1.0));");return this.compileAndRun(e,[t])},e.prototype.acosh=function(t){var e=new cs(t.shape,"if (isnan(x)) return x;\n  if (x < 1.0) return NAN;\n  return log(x + sqrt(x * x - 1.0));");return this.compileAndRun(e,[t])},e.prototype.atanh=function(t){var e=new cs(t.shape,"if (isnan(x)) return x;\n  if ((x < -1.0) || (x > 1.0)) return NAN;\n  return (log(1.0 + x) - log(1.0 - x)) / 2.0;");return this.compileAndRun(e,[t])},e.prototype.erf=function(t){var e=new cs(t.shape,'\n  // Error function is calculated approximately with elementary function.\n  // See "Handbook of Mathematical Functions with Formulas,\n  // Graphs, and Mathematical Tables", Abramowitz and Stegun.\n  float p = 0.3275911;\n  float a1 = 0.254829592;\n  float a2 = -0.284496736;\n  float a3 = 1.421413741;\n  float a4 = -1.453152027;\n  float a5 = 1.061405429;\n\n  float sign = sign(x);\n  x = abs(x);\n  float t = 1.0 / (1.0 + p * x);\n  return sign * (1.0 - (((((a5*t + a4)*t) + a3)*t + a2)*t + a1)*t*exp(-x*x));\n');return this.compileAndRun(e,[t])},e.prototype.step=function(t,e){var n=new cs(t.shape,function(t){return void 0===t&&(t=0),ls+"\n    return x > 0.0 ? 1.0 : float("+t+");\n  "}(e));return this.compileAndRun(n,[t])},e.prototype.conv2dByMatMul=function(t,e,n,r,a,o){var i=t.shape,s=this.texData.get(t.dataId),u=n.inChannels,c=i[0]*i[1]*i[2],l=n.outChannels,p="channelsLast"===n.dataFormat,d=(1===c||1===l)&&u>1e3,h=i[2]%2!=0&&!!s.isPacked;if(d||!f().getBool("WEBGL_LAZILY_UNPACK")||!f().getBool("WEBGL_PACK_BINARY_OPERATIONS")||!h){var m=p?i[0]*i[1]*i[2]:i[0]*i[2]*i[3],v=this.reshape(t,[1,m,n.inChannels]),g=this.reshape(e,[1,n.inChannels,n.outChannels]);return this.reshape(this.fusedBatchMatMul({a:v,b:g,transposeA:!1,transposeB:!1,bias:r,activation:a,preluActivationWeights:o}),n.outShape)}var y=p?i[0]*i[1]*(i[2]+1):i[0]*i[2]*(i[3]+1),x={dataId:t.dataId,shape:[1,y,n.inChannels],dtype:t.dtype},b=s.shape;s.shape=s.shape.slice(),s.shape[s.shape.length-2]++,T(Oe(s.shape,x.shape),(function(){return"packed reshape "+s.shape+" to "+x.shape+" isn't free"}));var w=this.reshape(e,[1,n.inChannels,n.outChannels]),C=this.fusedBatchMatMul({a:x,b:w,transposeA:!1,transposeB:!1,bias:r,activation:a,preluActivationWeights:o}),E=this.texData.get(C.dataId);return T(E.isPacked,(function(){return"batchMatMul result is expected to be packed"})),s.shape=b,E.shape=n.outShape,Lt.makeTensorFromDataId(C.dataId,n.outShape,C.dtype)},e.prototype.conv2dWithIm2Row=function(t,e,n,r,a,o){var i=n.filterWidth,s=n.filterHeight,u=n.inChannels,c=n.outWidth,l=n.outHeight,p="channelsLast"===n.dataFormat,f=i*s*u,d=l*c,h=[f,d],m=t.squeeze([0]),v=e.reshape([1,f,-1]),g=new Ni(h,m.shape,n),y=this.compileAndRun(g,[m]).reshape([1,h[0],h[1]]),x=null!=r,b=null!=o,w=a?Rs(a,!0):null,C=new Oi(y.shape,[1,d,n.outChannels],!0,!1,x,w,b),E=[y,v];r&&E.push(r),b&&E.push(o);var S=this.compileAndRun(C,E);return p?S.reshape([1,l,c,n.outChannels]):S.reshape([1,n.outChannels,l,c])},e.prototype.fusedConv2d=function(t){var e=t.input,n=t.filter,r=t.convInfo,a=t.bias,o=t.activation,i=t.preluActivationWeights;if(1===r.filterHeight&&1===r.filterWidth&&1===r.dilationHeight&&1===r.dilationWidth&&1===r.strideHeight&&1===r.strideWidth&&("SAME"===r.padInfo.type||"VALID"===r.padInfo.type))return this.conv2dByMatMul(e,n,r,a,o,i);if(f().getBool("WEBGL_CONV_IM2COL")&&1===e.shape[0])return this.conv2dWithIm2Row(e,n,r,a,o,i);var s=null!=a,u=null!=i,c=o?Rs(o,!1):null,l=new Wo(r,s,c,u),p=[e,n];return a&&p.push(a),i&&p.push(i),this.compileAndRun(l,p)},e.prototype.conv2d=function(t,e,n){if(1===n.filterHeight&&1===n.filterWidth&&1===n.dilationHeight&&1===n.dilationWidth&&1===n.strideHeight&&1===n.strideWidth&&("SAME"===n.padInfo.type||"VALID"===n.padInfo.type))return this.conv2dByMatMul(t,e,n);if(f().getBool("WEBGL_CONV_IM2COL")&&1===t.shape[0])return this.conv2dWithIm2Row(t,e,n);var r=new Wo(n);return this.compileAndRun(r,[t,e])},e.prototype.conv2dDerInput=function(t,e,n){var r=new Mo(n);return this.compileAndRun(r,[t,e])},e.prototype.conv2dDerFilter=function(t,e,n){var r=new Fo(n);return this.compileAndRun(r,[t,e])},e.prototype.fusedDepthwiseConv2D=function(t){var e,n=t.input,r=t.filter,a=t.convInfo,o=t.bias,i=t.activation,s=t.preluActivationWeights,u=f().getBool("WEBGL_PACK_DEPTHWISECONV")&&a.strideWidth<=2&&a.outChannels/a.inChannels==1,c=i?Rs(i,u):null,l=[n,r],p=null!=o,d=null!=s;return p&&l.push(o),d&&l.push(s),u?(e=new jo(a,p,c,d),this.compileAndRun(e,l)):(e=new Uo(a,p,c,d),this.compileAndRun(e,l))},e.prototype.depthwiseConv2D=function(t,e,n){var r;return f().getBool("WEBGL_PACK_DEPTHWISECONV")&&n.strideWidth<=2&&n.outChannels/n.inChannels==1?(r=new jo(n),this.compileAndRun(r,[t,e])):(r=new Uo(n),this.compileAndRun(r,[t,e]))},e.prototype.depthwiseConv2DDerInput=function(t,e,n){var r=new Vo(n);return this.compileAndRun(r,[t,e])},e.prototype.depthwiseConv2DDerFilter=function(t,e,n){var r=new Lo(n);return this.compileAndRun(r,[t,e])},e.prototype.conv3d=function(t,e,n){var r=new zo(n);return this.compileAndRun(r,[t,e])},e.prototype.conv3dDerInput=function(t,e,n){var r=new Po(n);return this.compileAndRun(r,[t,e])},e.prototype.conv3dDerFilter=function(t,e,n){var r=new Bo(n);return this.compileAndRun(r,[t,e])},e.prototype.maxPool=function(t,e){var n=new Pi(e,"max",!1);return this.compileAndRun(n,[t])},e.prototype.avgPool=function(t,e){var n=new Pi(e,"avg",!1);return this.compileAndRun(n,[t],"float32")},e.prototype.maxPoolBackprop=function(t,e,n,r){var a=new Pi(r,"max",!0),o=this.compileAndRun(a,[e]),i=new ki(r),s=this.compileAndRun(i,[t,o],e.dtype);return o.dispose(),s},e.prototype.avgPoolBackprop=function(t,e,n){var r=new vo(n);return this.compileAndRun(r,[t],e.dtype)},e.prototype.cast=function(t,e){return ka(t,e,this)},e.prototype.unstack=function(t,e){for(var n=t.shape[e],r=new Array(t.rank-1),a=0,o=0;o<t.rank;o++)o!==e&&(r[a++]=t.shape[o]);var i=new Array(t.rank).fill(0),s=t.shape.slice();s[e]=1;var u=new Array(n);for(o=0;o<u.length;o++)i[e]=o,u[o]=this.slice(t,i,s).reshape(r);return u},e.prototype.avgPool3d=function(t,e){var n=new Li(e,"avg",!1);return this.compileAndRun(n,[t],"float32")},e.prototype.avgPool3dBackprop=function(t,e,n){var r=new go(n);return this.compileAndRun(r,[t],e.dtype)},e.prototype.maxPool3d=function(t,e){var n=new Li(e,"max",!1);return this.compileAndRun(n,[t],"float32")},e.prototype.maxPool3dBackprop=function(t,e,n,r){var a=new Li(r,"max",!0),o=this.compileAndRun(a,[e]),i=new Ai(r),s=this.compileAndRun(i,[t,o],e.dtype);return o.dispose(),s},e.prototype.reshape=function(t,e){var n=this.texData.get(t.dataId);if(n.isPacked&&!Oe(t.shape,e)&&(null===n.texture||!Oe(n.shape,e))){var r=this.packedReshape(t,e);return Lt.makeTensorFromDataId(r.dataId,r.shape,r.dtype)}return Aa(t,e)},e.prototype.resizeBilinear=function(t,e,n,r){var a=f().getBool("WEBGL_PACK_IMAGE_OPERATIONS")?new ji(t.shape,e,n,r):new Ui(t.shape,e,n,r);return this.compileAndRun(a,[t],"float32")},e.prototype.resizeBilinearBackprop=function(t,e,n){var r=new zi(t,e,n);return this.compileAndRun(r,[t])},e.prototype.resizeNearestNeighbor=function(t,e,n,r){var a=new Hi(t.shape,e,n,r);return this.compileAndRun(a,[t])},e.prototype.resizeNearestNeighborBackprop=function(t,e,n){var r=new Gi(t,e,n);return this.compileAndRun(r,[t])},e.prototype.multinomial=function(t,e,n,r){var a=e?t:ca(t),o=a.shape[0],i=a.shape[1],s=new Di(o,i,n),u=s.getCustomSetupFunc(r);return this.compileAndRun(s,[a],"int32",u)},e.prototype.oneHot=function(t,e,n,r){var a=new _i(t.size,e,n,r);return this.compileAndRun(a,[t])},e.prototype.diag=function(t){var e=new $o(t.size);return this.compileAndRun(e,[t])},e.prototype.nonMaxSuppression=function(t,e,n,r,a){return pn("tf.nonMaxSuppression() in webgl locks the UI thread. Call tf.nonMaxSuppressionAsync() instead"),Va(t.dataSync(),e.dataSync(),n,r,a)},e.prototype.cropAndResize=function(t,e,n,r,a,o){var i=new Go(t.shape,e.shape,r,a,o);return this.compileAndRun(i,[t,e,n],"float32")},e.prototype.depthToSpace=function(t,e,n){T(e>1,(function(){return"blockSize should be > 1 for depthToSpace, but was: "+e}));var r=t.shape[0],a="NHWC"===n?t.shape[1]:t.shape[2],o="NHWC"===n?t.shape[2]:t.shape[3],i="NHWC"===n?t.shape[3]:t.shape[1],s=a*e,u=o*e,c=i/(e*e),l=new Yo("NHWC"===n?[r,s,u,c]:[r,c,s,u],e,n);return this.compileAndRun(l,[t])},e.prototype.split=function(t,e,n){return Ha(t,e,n)},e.prototype.scatterND=function(t,e,n){var r=Kr(0,t,n),a=r.sliceRank,o=r.numUpdates,i=r.sliceSize,s=r.strides,u=r.outputSize,c=[u/i,i],l=t.reshape([o,a]),p=e.reshape([o,i]);if(0===u)return Aa(An([]),n);var f=Dn(0),d=new Xi(o,a,l.rank,p.rank,s,c);return this.compileAndRun(d,[p,l,f]).reshape(n)},e.prototype.sparseToDense=function(t,e,n,r){var a=Kr(0,t,n),o=a.sliceRank,i=a.numUpdates,s=a.strides,u=a.outputSize,c=new Xi(i,o,t.rank,e.rank,s,[u,1],!1);return this.compileAndRun(c,[e,t,r]).reshape(n)},e.prototype.fft=function(t){return this.fftImpl(t,!1)},e.prototype.ifft=function(t){return this.fftImpl(t,!0)},e.prototype.fftImpl=function(t,e){var n=this.texData.get(t.dataId),r=new ei("return real * expR - imag * expI;",t.shape,e),a=new ei("return real * expI + imag * expR;",t.shape,e),o=[this.makeComplexComponentTensorInfo(t,n.complexTensors.real),this.makeComplexComponentTensorInfo(t,n.complexTensors.imag)],i=this.compileAndRun(r,o),s=this.compileAndRun(a,o),u=this.complex(i,s).as2D(t.shape[0],t.shape[1]);return i.dispose(),s.dispose(),u},e.prototype.gatherND=function(t,e){var n=e.shape,r=n[n.length-1],a=Hr(t,e),o=a[0],i=a[1],s=a[2],u=a[3],c=e.reshape([i,r]),l=t.reshape([t.size/s,s]),p=new ai(r,u,[i,s]);return this.compileAndRun(p,[l,c]).reshape(o)},e.prototype.fill=function(t,e,n){if("string"===(n=n||Z(e))){var r=j(n,D(t));return r.fill(e),Lt.makeTensor(r,t,n,this)}var a=new ni(t,e),o=a.getCustomSetupFunc(e);return this.compileAndRun(a,[],n,o)},e.prototype.onesLike=function(t){if("string"===t.dtype)throw new Error("onesLike is not supported under string dtype");return this.fill(t.shape,1,t.dtype)},e.prototype.zerosLike=function(t){return this.fill(t.shape,"string"===t.dtype?"":0,t.dtype)},e.prototype.linspace=function(t,e,n){return Oa(t,e,n)},e.prototype.makeTensorInfo=function(t,e){var n=this.write(null,t,e);return this.texData.get(n).usage=null,{dataId:n,shape:t,dtype:e}},e.prototype.makeOutput=function(t,e){var n=this.makeTensorInfo(t,e).dataId;return Lt.makeTensorFromDataId(n,t,e,this)},e.prototype.unpackTensor=function(t){var e=new Ns(t.shape);return this.runWebGLProgram(e,[t],t.dtype)},e.prototype.packTensor=function(t){var e=new Fi(t.shape);return this.runWebGLProgram(e,[t],t.dtype,null,!0)},e.prototype.packedReshape=function(t,e){var n=[Ie(t.shape)].concat(Re(t.shape)),r={dtype:t.dtype,shape:n,dataId:t.dataId},a=[Ie(e)].concat(Re(e)),o=new Wi(a,n),i=this.runWebGLProgram(o,[r],t.dtype,null,!0);return{dataId:i.dataId,shape:e,dtype:i.dtype}},e.prototype.decode=function(t){var e,n=this.texData.get(t),r=n.isPacked,a=n.shape,o=n.dtype,i=Te(a);return e=r?new Xo(i):new Ko(i),{dtype:o,shape:a,dataId:this.runWebGLProgram(e,[{shape:i,dtype:o,dataId:t}],o,null,!0).dataId}},e.prototype.runWebGLProgram=function(t,e,n,r,a){var o=this;void 0===a&&(a=!1);var i=this.makeTensorInfo(t.outputShape,n),s=this.texData.get(i.dataId);if(t.packedOutput&&(s.isPacked=!0),t.outPackingScheme===zt.DENSE){var u=Yt(t.outputShape);s.texShape=u.map((function(t){return 2*t}))}if(null!=t.outTexUsage&&(s.usage=t.outTexUsage),0===D(i.shape))return s.values=U(i.dtype,0),i;var c=[],l=e.map((function(e){if("complex64"===e.dtype)throw new Error("GPGPUProgram does not support complex64 input. For complex64 dtypes, please separate the program into real and imaginary parts.");var n=o.texData.get(e.dataId);if(null==n.texture){if(!t.packedInputs&&D(e.shape)<=f().getNumber("WEBGL_SIZE_UPLOAD_UNIFORM"))return{shape:e.shape,texData:null,isUniform:!0,uniformValues:n.values};t.packedInputs&&(n.isPacked=!0,n.shape=e.shape)}else if(!!n.isPacked!=!!t.packedInputs)e=n.isPacked?o.unpackTensor(e):o.packTensor(e),c.push(e),n=o.texData.get(e.dataId);else if(n.isPacked&&!Oe(n.shape,e.shape)){var r=e,a=e.shape;e.shape=n.shape,e=o.packedReshape(e,a),c.push(e),n=o.texData.get(e.dataId),r.shape=a}return o.uploadToGPU(e.dataId),{shape:e.shape,texData:n,isUniform:!1}}));this.uploadToGPU(i.dataId);var p,d={shape:i.shape,texData:s,isUniform:!1},h=function(t,e,n){var r="";e.concat(n).forEach((function(t){var e=null!=t.texData&&null!=t.texData.slice&&t.texData.slice.flatOffset>0,n=t.isUniform?"uniform":t.texData.texShape;r+=t.shape+"_"+n+"_"+e}));var a=t.userCode;return t.constructor.name+"_"+r+"_"+a}(t,l,d),m=this.getAndSaveBinary(h,(function(){return function(t,e,n,r){var a=e.userCode,o=n.map((function(t,n){var r={logicalShape:t.shape,texShape:t.isUniform?null:t.texData.texShape,isUniform:t.isUniform,isPacked:!t.isUniform&&t.texData.isPacked,flatOffset:null};return null!=t.texData&&null!=t.texData.slice&&t.texData.slice.flatOffset>0&&(r.flatOffset=t.texData.slice.flatOffset),{name:e.variableNames[n],shapeInfo:r}})),i=o.map((function(t){return t.shapeInfo})),s={logicalShape:r.shape,texShape:r.texData.texShape,isUniform:!1,isPacked:r.texData.isPacked,flatOffset:null},u=ao(o,s,a,e.packedInputs),c=t.createProgram(u),l=null,p=t.getUniformLocation(c,"NAN",!1);1===f().getNumber("WEBGL_VERSION")&&(l=t.getUniformLocation(c,"INFINITY",!1));for(var d={},h=0;h<e.variableNames.length;h++){var m=e.variableNames[h];d[m]=t.getUniformLocation(c,m,!1),d["offset"+m]=t.getUniformLocation(c,"offset"+m,!1)}return{program:e,source:u,webGLProgram:c,uniformLocations:d,inShapeInfos:i,outShapeInfo:s,infLoc:l,nanLoc:p}}(o.gpgpu,t,l,d)})),v=null!=this.activeTimers;if(v&&(p=this.startTimer()),function(t,e,n,r,a){Si(e.inShapeInfos,n),Si([e.outShapeInfo],[r]);var o=r.texData.texture,i=r.texData.texShape;r.texData.isPacked?t.setOutputPackedMatrixTexture(o,i[0],i[1]):t.setOutputMatrixTexture(o,i[0],i[1]),t.setProgram(e.webGLProgram),1===f().getNumber("WEBGL_VERSION")&&null!==e.infLoc&&t.gl.uniform1f(e.infLoc,1/0),null!==e.nanLoc&&t.gl.uniform1f(e.nanLoc,NaN),n.forEach((function(n,r){var a=e.program.variableNames[r],o=e.uniformLocations[a],i=e.uniformLocations["offset"+a];if(null!=o)if(n.isUniform)if(D(n.shape)<2)t.gl.uniform1f(o,n.uniformValues[0]);else{var s=n.uniformValues;s instanceof Float32Array||(s=new Float32Array(s)),t.gl.uniform1fv(o,s)}else 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t=this;this.disposed||(f().getBool("IS_TEST")||Object.keys(this.binaryCache).forEach((function(e){t.gpgpu.deleteProgram(t.binaryCache[e].webGLProgram),delete t.binaryCache[e]})),this.textureManager.dispose(),null!=this.canvas&&"undefined"!=typeof HTMLCanvasElement&&this.canvas instanceof HTMLCanvasElement?this.canvas.remove():this.canvas=null,this.gpgpuCreatedLocally&&(this.gpgpu.program=null,this.gpgpu.dispose()),this.disposed=!0)},e.prototype.floatPrecision=function(){var t=this;return null==this.floatPrecisionValue&&(this.floatPrecisionValue=Qe((function(){if(!f().get("WEBGL_RENDER_FLOAT32_ENABLED")){var e=f().getBool("DEBUG");f().set("DEBUG",!1);var n=t.abs(Dn(1e-8)).dataSync()[0];if(f().set("DEBUG",e),n>0)return 32}return 16}))),this.floatPrecisionValue},e.prototype.epsilon=function(){return 32===this.floatPrecision()?1e-7:1e-4},e.prototype.uploadToGPU=function(t){var e,n=this.texData.get(t),r=n.shape,a=n.dtype,o=n.values,i=n.texture,s=n.usage,u=n.isPacked;if(null==i){var c,l=null!=this.activeTimers;l&&(c=st());var p=n.texShape;if(null==p&&(p=ke(r,u),n.texShape=p),null!=o){var f=Te(r),d=void 0,h=p[1],m=p[0],v=o instanceof Uint8Array;u?(h=(e=$t(p[0],p[1]))[0],m=e[1],d=new ti(f,[m,h],v)):d=new Zo(f,[m,h],v);var g=this.makeTensorInfo([m,h],a);this.texData.get(g.dataId).usage=v?Ut.PIXELS:Ut.UPLOAD,this.gpgpu.uploadDenseMatrixToTexture(this.getTexture(g.dataId),h,m,o);var y=this.runWebGLProgram(d,[g],a,null,!0),x=this.texData.get(y.dataId);n.texture=x.texture,n.texShape=x.texShape,n.isPacked=x.isPacked,n.usage=x.usage,this.disposeData(g.dataId),this.texData.delete(y.dataId),n.values=null,l&&(this.uploadWaitMs+=st()-c)}else{var b=this.acquireTexture(p,s,a,u);n.texture=b}}},e.prototype.convertAndCacheOnCPU=function(t,e){var n=this.texData.get(t),r=n.dtype;return this.releaseGPUData(t),null!=e&&(n.values=function(t,e){if("float32"===e||"complex64"===e)return t;if("int32"===e||"bool"===e){for(var n="int32"===e?new Int32Array(t.length):new 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r=hn(t,"x","clipByValue");T(e<=n,(function(){return"Error in clip: min ("+e+") must be less than or equal to max ("+n+")."}));var a=[r],o={min:e,max:n};return Lt.runKernelFunc((function(t,a){var o=t.clip(r,e,n);return a([r]),o}),{x:r},(function(t,r){var a=r[0];return{x:function(){return t.where(a.greaterEqual(e).logicalAnd(a.lessEqual(n)),qn(t))}}}),"ClipByValue",o,a)}}),Vs=In({cos_:function(t){var e=hn(t,"x","cos"),n=[e];return Lt.runKernelFunc((function(t,n){var r=t.cos(e);return n([e]),r}),{x:e},(function(t,e){var n=e[0];return{x:function(){return n.toFloat().sin().neg().mul(t)}}}),"Cos",{},n)}}),Ws=In({cosh_:function(t){var e=hn(t,"x","cosh");return Lt.runKernelFunc((function(t,n){var r=t.cosh(e);return n([e]),r}),{$x:e},(function(t,e){var n=e[0];return{$x:function(){return n.toFloat().sinh().mulStrict(t)}}}))}}),zs=In({erf_:function(t){var e=hn(t,"x","erf");return T("int32"===e.dtype||"float32"===e.dtype,(function(){return"Input dtype must be `int32` or 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a=n?t.shape[1]:t.shape[2],o=n?t.shape[2]:t.shape[1],i=r?e.shape[1]:e.shape[2],s=t.shape[0],u=this.readSync(t.dataId),c=this.readSync(e.dataId),l=n?[t.strides[0],1,t.strides[1]]:[t.strides[0],t.strides[1],1],p=l[0],f=l[1],d=l[2],h=r?[1,e.strides[1],e.strides[0]]:[e.strides[1],1,e.strides[0]],m=h[0],v=h[1],g=h[2],y=o*i,x=pr([s,o,i],t.dtype),b=x.values,w=this.blockSize,C=0;C<s;C++)for(var E=0;E<o;E+=w)for(var S=0;S<i;S+=w)for(var N=0;N<a;N+=w)for(var I=Math.min(E+w,o),R=Math.min(S+w,i),T=Math.min(N+w,a),k=E;k<I;k++)for(var A=S;A<R;A++){for(var O=0,D=N;D<T;D++)O+=u[C*p+k*f+D*d]*c[D*m+A*v+C*g];b[C*y+(k*i+A)]+=O}return x.toTensor()},e.prototype.fusedBatchMatMul=function(t){var e=t.a,n=t.b,r=t.transposeA,a=t.transposeB,o=t.bias,i=t.activation,s=t.preluActivationWeights,u=this.batchMatMul(e,n,r,a);return 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n=yn(t.shape,e),r=n[0],a=n[1],o=zn(r,kt(t.dtype,"int32")),i=D(a),s=this.readSync(o.dataId),u=this.readSync(t.dataId),c=0;c<s.length;++c){for(var l=c*i,p=1,f=0;f<i;++f)p*=u[l+f];s[c]=p}return o},e.prototype.unsortedSegmentSum=function(t,e,n){vp(t,"unsortedSegmentSum");for(var r=[],a=t.rank-e.rank,o=0;o<a;++o)e=e.expandDims(o+1);for(o=0;o<n;++o){var i=Dn(o,"int32"),s=Ju(i,e).asType("float32").mul(t).sum(0);r.push(s)}return Mr(r)},e.prototype.argMin=function(t,e){vp(t,"argMin");var n=[e];bn("argMin",n,t.rank);for(var r=yn(t.shape,n),a=r[0],o=r[1],i=zn(a,"int32"),s=D(o),u=this.readSync(i.dataId),c=this.readSync(t.dataId),l=0;l<u.length;++l){for(var p=l*s,f=c[p],d=0,h=0;h<s;++h){var m=c[p+h];m<f&&(f=m,d=h)}u[l]=d}return i},e.prototype.argMax=function(t,e){vp(t,"argMax");var n=[e];bn("argMax",n,t.rank);for(var r=yn(t.shape,n),a=r[0],o=r[1],i=zn(a,"int32"),s=D(o),u=this.readSync(i.dataId),c=this.readSync(t.dataId),l=0;l<u.length;++l){for(var p=l*s,f=c[p],d=0,h=0;h<s;++h){var m=c[p+h];m>f&&(f=m,d=h)}u[l]=d}return i},e.prototype.cumsum=function(t,e,n,r){if(vp(t,"cumsum"),e!==t.rank-1)throw new Error("backend.cumsum in CPU expects an inner-most axis="+(t.rank-1)+" but got axis="+e);for(var a=kt(t.dtype,"int32"),o=zn(t.shape,a),i=this.readSync(o.dataId),s=this.readSync(t.dataId),u=t.shape[t.rank-1],c=r?function(t,e){return t+u-e-1}:function(t,e){return t+e},l=0;l<s.length;l+=u)for(var p=0;p<u;p++){var f=c(l,p);if(0===p)i[f]=n?0:s[f];else{var d=c(l,p-1);i[f]=n?s[d]+i[d]:s[f]+i[d]}}return o},e.prototype.equal=function(t,e){return vp([t,e],"equal"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t===e?1:0}))},e.prototype.notEqual=function(t,e){return vp([t,e],"notEqual"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t!==e?1:0}))},e.prototype.less=function(t,e){return vp([t,e],"less"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t<e?1:0}))},e.prototype.lessEqual=function(t,e){return vp([t,e],"lessEqual"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t<=e?1:0}))},e.prototype.greater=function(t,e){return vp([t,e],"greater"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t>e?1:0}))},e.prototype.greaterEqual=function(t,e){return vp([t,e],"greaterEqual"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t>=e?1:0}))},e.prototype.logicalNot=function(t){vp(t,"logicalNot");for(var e=this.readSync(t.dataId),n=new Uint8Array(e.length),r=0;r<e.length;++r)n[r]=e[r]?0:1;return this.makeOutput(n,t.shape,"bool")},e.prototype.logicalAnd=function(t,e){return vp([t,e],"logicalAnd"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t&&e}))},e.prototype.logicalOr=function(t,e){return vp([t,e],"logicalOr"),this.broadcastedBinaryOp(t,e,"bool",(function(t,e){return t||e}))},e.prototype.select=function(t,e,n){vp([t,e,n],"select");for(var r=this.readSync(t.dataId),a=this.readSync(e.dataId),o=this.readSync(n.dataId),i=zn(e.shape,kt(e.dtype,n.dtype)),s=this.readSync(i.dataId),u=0,c=0===t.rank||t.rank>1||1===e.rank?1:D(e.shape.slice(1)),l=0;l<r.length;l++)for(var p=0;p<c;p++)1===r[l]?s[u++]=a[l]:s[u++]=o[l];return i},e.prototype.where=function(t){vp([t],"where");var e=this.readSync(t.dataId);return Xa(t.shape,e)},e.prototype.topk=function(t,e,n){return vp(t,"topk"),Ka(this.readSync(t.dataId),t.shape,t.dtype,e)},e.prototype.min=function(t,e){vp(t,"min"),bn("min",e,t.rank);for(var n=yn(t.shape,e),r=n[0],a=n[1],o=zn(r,t.dtype),i=D(a),s=this.readSync(o.dataId),u=this.readSync(t.dataId),c=0;c<s.length;++c){for(var l=c*i,p=u[l],f=0;f<i;++f){var d=u[l+f];d<p&&(p=d)}s[c]=p}return o},e.prototype.minimum=function(t,e){return vp([t,e],"minimum"),this.broadcastedBinaryOp(t,e,t.dtype,(function(t,e){return Math.min(t,e)}))},e.prototype.mod=function(t,e){return vp([t,e],"mod"),this.broadcastedBinaryOp(t,e,t.dtype,(function(t,e){var 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o},e.prototype.squaredDifference=function(t,e){return vp([t,e],"squaredDifference"),this.broadcastedBinaryOp(t,e,t.dtype,(function(t,e){var n=t-e;return n*n}))},e.prototype.ceil=function(t){vp(t,"ceil");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r)n[r]=Math.ceil(e[r]);return this.makeOutput(n,t.shape,"float32")},e.prototype.floor=function(t){vp(t,"floor");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r)n[r]=Math.floor(e[r]);return this.makeOutput(n,t.shape,"float32")},e.prototype.sign=function(t){vp(t,"x");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r)e[r]<0?n[r]=-1:e[r]>0?n[r]=1:n[r]=0;return this.makeOutput(n,t.shape,"float32")},e.prototype.isNaN=function(t){vp(t,"x");for(var e=this.readSync(t.dataId),n=new Uint8Array(e.length),r=0;r<e.length;++r)Number.isNaN(e[r])&&(n[r]=1);return this.makeOutput(n,t.shape,"bool")},e.prototype.isInf=function(t){vp(t,"x");for(var e=this.readSync(t.dataId),n=new Uint8Array(e.length),r=0;r<e.length;++r)Math.abs(e[r])===1/0&&(n[r]=1);return this.makeOutput(n,t.shape,"bool")},e.prototype.isFinite=function(t){vp(t,"x");for(var e=this.readSync(t.dataId),n=new Uint8Array(e.length),r=0;r<e.length;++r)Number.isFinite(e[r])&&(n[r]=1);return this.makeOutput(n,t.shape,"bool")},e.prototype.round=function(t){vp(t,"round");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r){var a=Math.floor(e[r]);e[r]-a<.5?n[r]=Math.floor(e[r]):e[r]-a>.5?n[r]=Math.ceil(e[r]):n[r]=a%2==0?a:a+1}return this.makeOutput(n,t.shape,"float32")},e.prototype.exp=function(t){vp(t,"exp");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r)n[r]=Math.exp(e[r]);return this.makeOutput(n,t.shape,"float32")},e.prototype.expm1=function(t){vp(t,"expm1");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r)n[r]=Math.expm1(e[r]);return this.makeOutput(n,t.shape,"float32")},e.prototype.log=function(t){vp(t,"log");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r){var a=e[r];n[r]=Math.log(a)}return this.makeOutput(n,t.shape,"float32")},e.prototype.log1p=function(t){vp(t,"log1p");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r){var a=e[r];n[r]=Math.log1p(a)}return this.makeOutput(n,t.shape,"float32")},e.prototype.sqrt=function(t){vp(t,"sqrt");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r){var a=e[r];n[r]=Math.sqrt(a)}return this.makeOutput(n,t.shape,"float32")},e.prototype.rsqrt=function(t){vp(t,"rsqrt");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r){var a=e[r];n[r]=1/Math.sqrt(a)}return this.makeOutput(n,t.shape,"float32")},e.prototype.reciprocal=function(t){vp(t,"reciprocal");for(var e=this.readSync(t.dataId),n=new Float32Array(e.length),r=0;r<e.length;++r)n[r]=1/e[r];return 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this.makeOutput(n,e.shape,"float32")},e.prototype.selu=function(t){vp(t,"selu");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r){var a=n[r];e[r]=a>=0?1.0507009873554805*a:1.7580993408473768*(Math.exp(a)-1)}return this.makeOutput(e,t.shape,"float32")},e.prototype.clip=function(t,e,n){vp(t,"clip");for(var r=new Float32Array(t.size),a=this.readSync(t.dataId),o=0;o<a.length;++o){var i=a[o];r[o]=i>n?n:i<e?e:i}return this.makeOutput(r,t.shape,"float32")},e.prototype.abs=function(t){for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.abs(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.complexAbs=function(t){for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<t.size;++r){var a=n[2*r],o=n[2*r+1];e[r]=Math.hypot(a,o)}return this.makeOutput(e,t.shape,"float32")},e.prototype.int=function(t){vp(t,"int");for(var e=new Int32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=n[r];return this.makeOutput(e,t.shape,"int32")},e.prototype.sigmoid=function(t){vp(t,"sigmoid");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=1/(1+Math.exp(-n[r]));return this.makeOutput(e,t.shape,"float32")},e.prototype.softplus=function(t){vp(t,"softplus");for(var e=Math.log(1.1920928955078125e-7)+2,n=new Float32Array(t.size),r=this.readSync(t.dataId),a=0;a<r.length;++a){var o,i=r[a]>-e,s=r[a]<e,u=Math.exp(r[a]);o=s?u:i?r[a]:Math.log(1+u),n[a]=o}return this.makeOutput(n,t.shape,"float32")},e.prototype.sin=function(t){vp(t,"sin");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.sin(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.cos=function(t){vp(t,"cos");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.cos(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.tan=function(t){vp(t,"tan");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.tan(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.asin=function(t){vp(t,"asin");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.asin(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.acos=function(t){vp(t,"acos");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.acos(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.atan=function(t){vp(t,"atan");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.atan(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.atan2=function(t,e){return vp([t,e],"atan2"),this.broadcastedBinaryOp(t,e,t.dtype,(function(t,e){return Math.atan2(t,e)}))},e.prototype.sinh=function(t){vp(t,"sinh");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.sinh(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.cosh=function(t){vp(t,"cosh");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.cosh(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.tanh=function(t){vp(t,"tanh");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=M(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.asinh=function(t){vp(t,"asinh");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.asinh(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.acosh=function(t){vp(t,"acosh");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.acosh(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.atanh=function(t){vp(t,"atanh");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r)e[r]=Math.atanh(n[r]);return this.makeOutput(e,t.shape,"float32")},e.prototype.erf=function(t){vp(t,"erf");for(var e=new Float32Array(t.size),n=this.readSync(t.dataId),r=0;r<n.length;++r){var a=Math.sign(n[r]),o=Math.abs(n[r]),i=1/(1+.3275911*o);e[r]=a*(1-((((1.061405429*i-1.453152027)*i+1.421413741)*i-.284496736)*i+.254829592)*i*Math.exp(-o*o))}return this.makeOutput(e,t.shape,"float32")},e.prototype.step=function(t,e){void 0===e&&(e=0),vp(t,"step");for(var n=new Float32Array(t.size),r=this.readSync(t.dataId),a=0;a<r.length;++a){var o=r[a];isNaN(o)?n[a]=NaN:n[a]=o>0?1:e}return this.makeOutput(n,t.shape,"float32")},e.prototype.fusedConv2d=function(t){var e=t.input,n=t.filter,r=t.convInfo,a=t.bias,o=t.activation,i=t.preluActivationWeights,s=this.conv2d(e,n,r);return a&&(s=this.add(s,a)),o&&(s=gp(this,s,o,i)),s},e.prototype.conv2d=function(t,e,n){vp([t,e],"conv2d");for(var r=n.filterHeight,a=n.filterWidth,o=n.dilationHeight,i=n.dilationWidth,s=n.padInfo.left,u=n.padInfo.top,c="channelsLast"===n.dataFormat,l=pr(n.outShape,t.dtype),p=t.strides[0],f=c?t.strides[1]:t.strides[2],d=c?t.strides[2]:1,h=c?1:t.strides[1],m=l.strides[0],v=c?l.strides[1]:l.strides[2],g=c?l.strides[2]:1,y=c?1:l.strides[1],x=this.readSync(t.dataId),b=this.readSync(e.dataId),w=l.values,C=0;C<n.batchSize;++C)for(var E=C*p,S=C*m,N=0;N<n.outHeight;++N)for(var I=S+N*v,R=N*n.strideHeight-u,T=0;T<r;T++){var k=R+T*o;if(!(k<0||k>=n.inHeight))for(var A=T*e.strides[0],O=E+k*f,D=0;D<n.outWidth;++D)for(var _=I+D*g,F=D*n.strideWidth-s,M=0;M<a;M++){var B=F+M*i;if(!(B<0||B>=n.inWidth))for(var P=O+B*d,L=A+M*e.strides[1],V=0;V<n.inChannels;++V){for(var W=x[P+V*h],z=0;z<n.outChannels;++z)w[_+z*y]+=W*b[L+z];L+=n.outChannels}}}return l.toTensor()},e.prototype.conv3d=function(t,e,n){for(var r=n.filterDepth,a=n.filterHeight,o=n.filterWidth,i=n.dilationDepth,s=n.dilationHeight,u=n.dilationWidth,c=n.padInfo.front,l=n.padInfo.left,p=n.padInfo.top,f=pr(n.outShape,t.dtype),d=this.readSync(t.dataId),h=this.readSync(e.dataId),m=f.values,v=0;v<n.batchSize;++v)for(var g=v*t.strides[0],y=v*f.strides[0],x=0;x<n.outDepth;++x)for(var b=y+x*f.strides[1],w=x*n.strideDepth-c,C=0;C<r;C++){var E=w+C*i;if(!(E<0||E>=n.inDepth))for(var S=C*e.strides[0],N=g+E*t.strides[1],I=0;I<n.outHeight;++I)for(var R=b+I*f.strides[2],T=I*n.strideHeight-p,k=0;k<a;k++){var A=T+k*s;if(!(A<0||A>=n.inHeight))for(var O=S+k*e.strides[1],D=N+A*t.strides[2],_=0;_<n.outWidth;++_)for(var F=R+_*n.outChannels,M=_*n.strideWidth-l,B=0;B<o;B++){var P=M+B*u;if(!(P<0||P>=n.inWidth))for(var L=O+B*e.strides[2],V=D+P*n.inChannels,W=L,z=0;z<n.inChannels;++z){for(var U=d[V+z],j=0;j<n.outChannels;++j)m[F+j]+=U*h[W+j];W+=n.outChannels}}}}return f.toTensor()},e.prototype.conv2dDerInput=function(t,e,n){vp([t,e],"conv2dDerInput");for(var r=pr(n.inShape,"float32"),a=r.values,o=this.readSync(t.dataId),i=this.readSync(e.dataId),s=e.strides,u=s[0],c=s[1],l=s[2],p=n.batchSize,f=n.filterHeight,d=n.filterWidth,h=n.inChannels,m=n.inHeight,v=n.inWidth,g=n.outChannels,y=n.outHeight,x=n.outWidth,b=n.strideHeight,w=n.strideWidth,C=n.dataFormat,E=f-1-n.padInfo.top,S=d-1-n.padInfo.left,N="channelsLast"===C,I=r.strides[0],R=N?r.strides[1]:r.strides[2],T=N?r.strides[2]:1,k=N?1:r.strides[1],A=t.strides[0],O=N?t.strides[1]:t.strides[2],D=N?t.strides[2]:1,_=N?1:t.strides[1],F=0;F<p;++F)for(var M=0;M<h;++M)for(var B=0;B<m;++B)for(var P=B-E,L=Math.max(0,Math.ceil(P/b)),V=Math.min(y,(f+P)/b),W=0;W<v;++W){for(var z=W-S,U=Math.max(0,Math.ceil(z/w)),j=Math.min(x,(d+z)/w),G=0,H=L;H<V;++H)for(var q=H*b-P,K=U;K<j;++K)for(var X=A*F+O*H+D*K,Y=u*(f-1-q)+c*(d-1-(K*w-z))+l*M,$=0;$<g;++$)G+=o[X+_*$]*i[Y+$];a[I*F+R*B+T*W+k*M]=G}return r.toTensor()},e.prototype.conv3dDerInput=function(t,e,n){for(var r=pr(n.inShape,"float32"),a=r.values,o=r.strides,i=o[0],s=o[1],u=o[2],c=o[3],l=this.readSync(t.dataId),p=t.strides,f=p[0],d=p[1],h=p[2],m=p[3],v=this.readSync(e.dataId),g=e.strides,y=g[0],x=g[1],b=g[2],w=g[3],C=n.batchSize,E=n.filterDepth,S=n.filterHeight,N=n.filterWidth,I=n.inChannels,R=n.inDepth,T=n.inHeight,k=n.inWidth,A=n.outChannels,O=n.outDepth,D=n.outHeight,_=n.outWidth,F=n.strideDepth,M=n.strideHeight,B=n.strideWidth,P=E-1-n.padInfo.front,L=S-1-n.padInfo.top,V=N-1-n.padInfo.left,W=0;W<C;++W)for(var z=0;z<I;++z)for(var U=0;U<R;++U)for(var j=U-P,G=Math.max(0,Math.ceil(j/F)),H=Math.min(O,(E+j)/F),q=0;q<T;++q)for(var K=q-L,X=Math.max(0,Math.ceil(K/M)),Y=Math.min(D,(S+K)/M),$=0;$<k;++$){for(var Q=$-V,J=Math.max(0,Math.ceil(Q/B)),Z=Math.min(_,(N+Q)/B),tt=0,et=G;et<H;++et)for(var nt=et*F-j,rt=X;rt<Y;++rt)for(var at=rt*M-K,ot=J;ot<Z;++ot)for(var it=f*W+d*et+h*rt+m*ot,st=y*(E-1-nt)+x*(S-1-at)+b*(N-1-(ot*B-Q))+w*z,ut=0;ut<A;++ut)tt+=l[it+ut]*v[st+ut];a[i*W+s*U+u*q+c*$+z]=tt}return r.toTensor()},e.prototype.conv2dDerFilter=function(t,e,n){vp([t,e],"conv2dDerFilter");for(var r=n.strideHeight,a=n.strideWidth,o=n.filterHeight,i=n.filterWidth,s="channelsLast"===n.dataFormat,u=pr(n.filterShape,"float32"),c=n.padInfo.left,l=n.padInfo.top,p=this.bufferSync(t),f=this.bufferSync(e),d=0;d<o;++d)for(var h=Math.max(0,Math.ceil((l-d)/r)),m=Math.min(n.outHeight,(n.inHeight+l-d)/r),v=0;v<i;++v)for(var g=Math.max(0,Math.ceil((c-v)/a)),y=Math.min(n.outWidth,(n.inWidth+c-v)/a),x=0;x<n.inChannels;++x)for(var b=0;b<n.outChannels;++b){for(var w=0,C=0;C<n.batchSize;++C)for(var E=h;E<m;++E)for(var S=d+E*r-l,N=g;N<y;++N){var I=v+N*a-c;w+=s?p.get(C,S,I,x)*f.get(C,E,N,b):p.get(C,x,S,I)*f.get(C,b,E,N)}u.set(w,d,v,x,b)}return u.toTensor()},e.prototype.conv3dDerFilter=function(t,e,n){for(var r=n.strideDepth,a=n.strideHeight,o=n.strideWidth,i=n.filterDepth,s=n.filterHeight,u=n.filterWidth,c=pr(n.filterShape,"float32"),l=c.values,p=c.strides,f=p[0],d=p[1],h=p[2],m=p[3],v=this.readSync(e.dataId),g=e.strides,y=g[0],x=g[1],b=g[2],w=g[3],C=this.readSync(t.dataId),E=t.strides,S=E[0],N=E[1],I=E[2],R=E[3],T=n.padInfo.front,k=n.padInfo.left,A=n.padInfo.top,O=0;O<i;++O)for(var D=Math.max(0,Math.ceil((T-O)/r)),_=Math.min(n.outDepth,(n.inDepth+T-O)/r),F=O*f,M=0;M<s;++M)for(var B=Math.max(0,Math.ceil((A-M)/a)),P=Math.min(n.outHeight,(n.inHeight+A-M)/a),L=M*d+F,V=0;V<u;++V)for(var W=Math.max(0,Math.ceil((k-V)/o)),z=Math.min(n.outWidth,(n.inWidth+k-V)/o),U=V*h+L,j=0;j<n.inChannels;++j)for(var G=j*m+U,H=0;H<n.outChannels;++H){for(var q=0,K=0;K<n.batchSize;++K)for(var X=K*S,Y=K*y,$=D;$<_;++$)for(var Q=(O+$*r-T)*N+X,J=$*x+Y,Z=B;Z<P;++Z)for(var tt=(M+Z*a-A)*I+Q,et=Z*b+J,nt=W;nt<z;++nt){var rt=nt*w+et;q+=C[(V+nt*o-k)*R+tt+j]*v[rt+H]}l[G+H]=q}return c.toTensor()},e.prototype.fusedDepthwiseConv2D=function(t){var e=t.input,n=t.filter,r=t.convInfo,a=t.bias,o=t.activation,i=t.preluActivationWeights,s=this.depthwiseConv2D(e,n,r);return a&&(s=this.add(s,a)),o&&(s=gp(this,s,o,i)),s},e.prototype.depthwiseConv2D=function(t,e,n){vp([t,e],"depthwiseConv2D");for(var r=n.filterHeight,a=n.filterWidth,o=n.dilationHeight,i=n.dilationWidth,s=n.padInfo.left,u=n.padInfo.top,c=n.outChannels/n.inChannels,l=pr(n.outShape,t.dtype),p=this.readSync(t.dataId),f=this.readSync(e.dataId),d=l.values,h=0;h<n.batchSize;++h)for(var m=h*t.strides[0],v=h*l.strides[0],g=0;g<n.outHeight;++g)for(var y=v+g*l.strides[1],x=g*n.strideHeight-s,b=0;b<r;++b){var w=x+b*o;if(!(w<0||w>=n.inHeight))for(var C=b*e.strides[0],E=m+w*t.strides[1],S=0;S<n.outWidth;++S)for(var N=y+S*l.strides[2],I=S*n.strideWidth-u,R=0;R<a;++R){var T=I+R*i;if(!(T<0||T>=n.inWidth))for(var k=C+R*e.strides[1],A=E+T*n.inChannels,O=N,D=k,_=0;_<n.inChannels;++_){for(var F=p[A+_],M=0;M<c;++M)d[O+M]+=F*f[D+M];O+=c,D+=c}}}return l.toTensor()},e.prototype.depthwiseConv2DDerInput=function(t,e,n){vp([t,e],"depthwiseConv2DDerInput");for(var r=pr(n.inShape,"float32"),a=r.values,o=r.strides,i=o[0],s=o[1],u=o[2],c=this.readSync(t.dataId),l=t.strides,p=l[0],f=l[1],d=l[2],h=this.readSync(e.dataId),m=e.strides,v=m[0],g=m[1],y=m[2],x=n.batchSize,b=n.filterHeight,w=n.filterWidth,C=n.inChannels,E=n.inHeight,S=n.inWidth,N=n.outChannels,I=n.outHeight,R=n.outWidth,T=n.strideHeight,k=n.strideWidth,A=b-1-n.padInfo.top,O=w-1-n.padInfo.left,D=N/C,_=0;_<x;++_)for(var F=0;F<C;++F)for(var M=0;M<E;++M)for(var B=M-A,P=Math.max(0,Math.ceil(B/T)),L=Math.min(I,(b+B)/T),V=0;V<S;++V){for(var W=V-O,z=Math.max(0,Math.ceil(W/k)),U=Math.min(R,(w+W)/k),j=0,G=P;G<L;++G)for(var H=G*T-B,q=z;q<U;++q)for(var K=p*_+f*G+d*q,X=v*(b-1-H)+g*(w-1-(q*k-W))+y*F,Y=0;Y<D;++Y)j+=c[K+(F*D+Y)]*h[X+Y];a[i*_+s*M+u*V+F]=j}return r.toTensor()},e.prototype.depthwiseConv2DDerFilter=function(t,e,n){vp([t,e],"depthwiseConv2DDerFilter");for(var r=n.strideHeight,a=n.strideWidth,o=n.filterHeight,i=n.filterWidth,s=pr(n.filterShape,"float32"),u=n.padInfo.left,c=n.padInfo.top,l=n.outChannels/n.inChannels,p=this.bufferSync(t),f=this.bufferSync(e),d=0;d<o;++d)for(var h=Math.max(0,Math.ceil((c-d)/r)),m=Math.min(n.outHeight,(n.inHeight+c-d)/r),v=0;v<i;++v)for(var g=Math.max(0,Math.ceil((u-v)/a)),y=Math.min(n.outWidth,(n.inWidth+u-v)/a),x=0;x<n.outChannels;++x){for(var b=Math.trunc(x/l),w=x%l,C=0,E=0;E<n.batchSize;++E)for(var S=h;S<m;++S)for(var N=d+S*r-c,I=g;I<y;++I){var R=v+I*a-u;C+=p.get(E,N,R,b)*f.get(E,S,I,x)}s.set(C,d,v,b,w)}return s.toTensor()},e.prototype.tile=function(t,e){return vp(t,"tile"),qa(this.bufferSync(t),e)},e.prototype.pad=function(t,e,n){vp(t,"pad");var r=e.map((function(e,n){return e[0]+t.shape[n]+e[1]})),a=e.map((function(t){return t[0]})),o=this.bufferSync(t),i=pr(r,t.dtype);0!==n&&i.values.fill(n);for(var s=0;s<t.size;s++){var u=o.indexToLoc(s),c=u.map((function(t,e){return t+a[e]}));i.set.apply(i,[o.get.apply(o,u)].concat(c))}return i.toTensor()},e.prototype.transpose=function(t,e){vp(t,"transpose");for(var n=new Array(t.rank),r=0;r<n.length;r++)n[r]=t.shape[e[r]];var a=this.readSync(t.dataId),o=pr(n,t.dtype),i=this.bufferSync(t);for(r=0;r<t.size;++r){for(var s=i.indexToLoc(r),u=new Array(s.length),c=0;c<u.length;c++)u[c]=s[e[c]];var l=o.locToIndex(u);o.values[l]=a[r]}return o.toTensor()},e.prototype.gather=function(t,e,n){vp([t,e],"gather");var r=t.shape.slice(),a=this.readSync(e.dataId);r[n]=a.length;for(var o=pr(r,t.dtype),i=this.bufferSync(t),s=0;s<o.size;++s){var u=o.indexToLoc(s),c=u.slice();c[n]=a[u[n]];var l=i.locToIndex(c);o.values[s]=i.values[l]}return o.toTensor()},e.prototype.batchToSpaceND=function(t,e,n){vp([t],"batchToSpaceND");var r=e.reduce((function(t,e){return t*e})),a=Wr(t.shape,e,r),o=zr(a.length,e.length),i=Ur(t.shape,e,r),s=jr(n,e.length),u=Gr(i,n,e.length);return t.reshape(a).transpose(o).reshape(i).slice(s,u)},e.prototype.spaceToBatchND=function(t,e,n){vp([t],"spaceToBatchND");var r=e.reduce((function(t,e){return t*e})),a=[[0,0]];a.push.apply(a,n);for(var o=1+e.length;o<t.shape.length;++o)a.push([0,0]);var i=t.pad(a),s=Wr(i.shape,e,r,!1),u=zr(s.length,e.length,!1),c=Ur(i.shape,e,r,!1);return i.reshape(s).transpose(u).reshape(c)},e.prototype.pool=function(t,e,n){vp(t,"pool");for(var r=e.strideHeight,a=e.strideWidth,o=e.dilationHeight,i=e.dilationWidth,s=e.effectiveFilterHeight,u=e.effectiveFilterWidth,c=e.padInfo.top,l=e.padInfo.left,p="max"===n?Number.NEGATIVE_INFINITY:Number.POSITIVE_INFINITY,f=this.readSync(t.dataId),d=pr(e.outShape,t.dtype),h=d.values,m=e.outShape[1]*e.outShape[2]*e.outShape[3],v=e.outShape[2]*e.outShape[3],g=e.outShape[3],y=0;y<e.batchSize;++y)for(var x=y*m,b=y*t.strides[0],w=0;w<e.inChannels;++w)for(var C=0;C<e.outHeight;++C)for(var E=C*r-c,S=Math.max(0,E),N=Math.min(e.inHeight,s+E),I=x+C*v,R=0;R<e.outWidth;++R){for(var T=R*a-l,k=Math.max(0,T),A=Math.min(e.inWidth,u+T),O=p,D=0,_=0,F=S;F<N;F+=o){for(var M=b+F*t.strides[1],B=k;B<A;B+=i){var P=f[M+B*t.strides[2]+w];"max"===n&&P>O?O=P:"avg"===n&&(D+=P,_++)}if(isNaN(O))break}h[I+R*g+w]="avg"===n?D/_:O}return d.toTensor()},e.prototype.maxPool=function(t,e){return this.pool(t,e,"max")},e.prototype.maxPoolPositions=function(t,e){for(var n=pr(e.outShape,"int32"),r=e.strideHeight,a=e.strideWidth,o=e.dilationHeight,i=e.dilationWidth,s=e.effectiveFilterHeight,u=e.effectiveFilterWidth,c=e.padInfo.top,l=e.padInfo.left,p=this.bufferSync(t),f=0;f<e.batchSize;++f)for(var d=0;d<e.inChannels;++d)for(var h=0;h<e.outHeight;++h){for(var m=h*r-c,v=m;v<0;)v+=o;for(var g=Math.min(e.inHeight,s+m),y=0;y<e.outWidth;++y){for(var x=y*a-l,b=x;b<0;)b+=i;for(var w=Math.min(e.inWidth,u+x),C=Number.NEGATIVE_INFINITY,E=-1,S=v;S<g;S+=o)for(var N=S-m,I=b;I<w;I+=i){var R=I-x,T=p.get(f,S,I,d);T>C&&(C=T,E=N*u+R)}n.set(E,f,h,y,d)}}return n.toTensor()},e.prototype.maxPoolBackprop=function(t,e,n,r){vp([e,n],"maxPoolBackprop");for(var a=this.maxPoolPositions(e,r),o=r.strideHeight,i=r.strideWidth,s=r.dilationHeight,u=r.dilationWidth,c=r.effectiveFilterHeight,l=r.effectiveFilterWidth,p=l-1-r.padInfo.left,f=c-1-r.padInfo.top,d=pr(e.shape,"float32"),h=this.bufferSync(a),m=this.bufferSync(t),v=0;v<r.batchSize;++v)for(var g=0;g<r.inChannels;++g)for(var y=0;y<r.inHeight;++y)for(var x=0;x<r.inWidth;++x){for(var b=y-f,w=x-p,C=0,E=0;E<c;E+=s){var S=(b+E)/o;if(!(S<0||S>=r.outHeight||Math.floor(S)!==S))for(var N=0;N<l;N+=u){var I=(w+N)/i;if(!(I<0||I>=r.outWidth||Math.floor(I)!==I)){var R=c*l-1-h.get(v,S,I,g)===E*l+N?1:0;0!==R&&(C+=m.get(v,S,I,g)*R)}}}d.set(C,v,y,x,g)}return d.toTensor()},e.prototype.avgPoolBackprop=function(t,e,n){vp([t,e],"avgPoolBackprop");for(var r=n.strideHeight,a=n.strideWidth,o=n.filterHeight,i=n.filterWidth,s=n.dilationHeight,u=n.dilationWidth,c=n.effectiveFilterHeight,l=n.effectiveFilterWidth,p=l-1-n.padInfo.left,f=c-1-n.padInfo.top,d=pr(e.shape,"float32"),h=1/(o*i),m=this.bufferSync(t),v=0;v<n.batchSize;++v)for(var g=0;g<n.inChannels;++g)for(var y=0;y<n.inHeight;++y)for(var x=0;x<n.inWidth;++x){for(var b=y-f,w=x-p,C=0,E=0;E<c;E+=s){var S=(b+E)/r;if(!(S<0||S>=n.outHeight||Math.floor(S)!==S))for(var N=0;N<l;N+=u){var I=(w+N)/a;I<0||I>=n.outWidth||Math.floor(I)!==I||(C+=m.get(v,S,I,g))}}d.set(C*h,v,y,x,g)}return d.toTensor()},e.prototype.pool3d=function(t,e,n){vp(t,"pool3d");for(var r=e.strideDepth,a=e.strideHeight,o=e.strideWidth,i=e.dilationDepth,s=e.dilationHeight,u=e.dilationWidth,c=e.effectiveFilterDepth,l=e.effectiveFilterHeight,p=e.effectiveFilterWidth,f=e.padInfo.front,d=e.padInfo.top,h=e.padInfo.left,m="max"===n?Number.NEGATIVE_INFINITY:Number.POSITIVE_INFINITY,v=this.readSync(t.dataId),g=pr(e.outShape,t.dtype),y=g.values,x=e.outShape[1]*e.outShape[2]*e.outShape[3]*e.outShape[4],b=e.outShape[2]*e.outShape[3]*e.outShape[4],w=e.outShape[3]*e.outShape[4],C=e.outShape[4],E=0;E<e.batchSize;++E)for(var S=E*x,N=E*t.strides[0],I=0;I<e.inChannels;++I)for(var R=0;R<e.outDepth;++R){for(var T=R*r-f,k=T;k<0;)k+=i;for(var A=Math.min(e.inDepth,c+T),O=S+R*b,D=0;D<e.outHeight;++D){for(var _=D*a-d,F=_;F<0;)F+=s;for(var M=Math.min(e.inHeight,l+_),B=O+D*w,P=0;P<e.outWidth;++P){for(var L=P*o-h,V=L;V<0;)V+=u;for(var W=Math.min(e.inWidth,p+L),z=B+P*C,U=m,j=0,G=0,H=k;H<A;H+=i){for(var q=N+H*t.strides[1],K=F;K<M;K+=s){for(var X=q+K*t.strides[2],Y=V;Y<W;Y+=u){var $=v[X+Y*t.strides[3]+I];if("max"===n&&$>U?U=$:"avg"===n&&(j+=$,G++),isNaN(U))break}if(isNaN(U))break}if(isNaN(U))break}y[z+I]="avg"===n?j/G:U}}}return g.toTensor()},e.prototype.avgPool3d=function(t,e){return vp(t,"avgPool3d"),this.pool3d(t,e,"avg").toFloat()},e.prototype.avgPool3dBackprop=function(t,e,n){vp([t,e],"avgPool3dBackprop");for(var r=n.strideDepth,a=n.strideHeight,o=n.strideWidth,i=n.filterDepth,s=n.filterHeight,u=n.filterWidth,c=n.dilationDepth,l=n.dilationHeight,p=n.dilationWidth,f=n.effectiveFilterDepth,d=n.effectiveFilterHeight,h=n.effectiveFilterWidth,m=f-1-n.padInfo.front,v=h-1-n.padInfo.left,g=d-1-n.padInfo.top,y=pr(e.shape,"float32"),x=1/(i*s*u),b=this.bufferSync(t),w=0;w<n.batchSize;++w)for(var C=0;C<n.inChannels;++C)for(var E=0;E<n.inDepth;++E)for(var S=0;S<n.inHeight;++S)for(var N=0;N<n.inWidth;++N){for(var I=E-m,R=S-g,T=N-v,k=0,A=0;A<f;A+=c){var O=(I+A)/r;if(!(O<0||O>=n.outDepth||Math.floor(O)!==O))for(var D=0;D<d;D+=l){var _=(R+D)/a;if(!(_<0||_>=n.outHeight||Math.floor(_)!==_))for(var F=0;F<h;F+=p){var M=(T+F)/o;M<0||M>=n.outWidth||Math.floor(M)!==M||(k+=b.get(w,O,_,M,C))}}}y.set(k*x,w,E,S,N,C)}return y.toTensor()},e.prototype.maxPool3d=function(t,e){return vp(t,"maxPool3d"),this.pool3d(t,e,"max").toFloat()},e.prototype.maxPool3dPositions=function(t,e){for(var n=pr(e.outShape,"int32"),r=e.strideDepth,a=e.strideHeight,o=e.strideWidth,i=e.dilationDepth,s=e.dilationHeight,u=e.dilationWidth,c=e.effectiveFilterDepth,l=e.effectiveFilterHeight,p=e.effectiveFilterWidth,f=e.padInfo.front,d=e.padInfo.top,h=e.padInfo.left,m=this.bufferSync(t),v=0;v<e.batchSize;++v)for(var g=0;g<e.inChannels;++g)for(var y=0;y<e.outDepth;++y){for(var x=y*r-f,b=x;b<0;)b+=i;for(var w=Math.min(e.inDepth,c+x),C=0;C<e.outHeight;++C){for(var E=C*a-d,S=E;S<0;)S+=s;for(var N=Math.min(e.inHeight,l+E),I=0;I<e.outWidth;++I){for(var R=I*o-h,T=R;T<0;)T+=u;for(var k=Math.min(e.inWidth,p+R),A=Number.NEGATIVE_INFINITY,O=-1,D=b;D<w;D+=i)for(var _=D-x,F=S;F<N;F+=s)for(var M=F-E,B=T;B<k;B+=u){var P=B-R,L=m.get(v,D,F,B,g);L>=A&&(A=L,O=_*l*p+M*l+P)}n.set(O,v,y,C,I,g)}}}return n.toTensor()},e.prototype.maxPool3dBackprop=function(t,e,n,r){vp([e,n],"maxPool3dBackprop");for(var a=this.maxPool3dPositions(e,r),o=r.strideDepth,i=r.strideHeight,s=r.strideWidth,u=r.dilationDepth,c=r.dilationHeight,l=r.dilationWidth,p=r.effectiveFilterDepth,f=r.effectiveFilterHeight,d=r.effectiveFilterWidth,h=p-1-r.padInfo.front,m=d-1-r.padInfo.left,v=f-1-r.padInfo.top,g=pr(e.shape,"float32"),y=this.bufferSync(a),x=this.bufferSync(t),b=0;b<r.batchSize;++b)for(var w=0;w<r.inChannels;++w)for(var C=0;C<r.inDepth;++C)for(var E=0;E<r.inHeight;++E)for(var S=0;S<r.inWidth;++S){for(var N=C-h,I=E-v,R=S-m,T=0,k=0;k<p;k+=u){var A=(N+k)/o;if(!(A<0||A>=r.outDepth||Math.floor(A)!==A))for(var O=0;O<f;O+=c){var D=(I+O)/i;if(!(D<0||D>=r.outHeight||Math.floor(D)!==D))for(var _=0;_<d;_+=l){var F=(R+_)/s;if(!(F<0||F>=r.outWidth||Math.floor(F)!==F)){var M=p*f*d-1-y.get(b,A,D,F,w)===k*f*d+O*d+_?1:0;0!==M&&(T+=x.get(b,A,D,F,w)*M)}}}}g.set(T,b,C,E,S,w)}return g.toTensor()},e.prototype.cast=function(t,e){return ka(t,e,this)},e.prototype.reshape=function(t,e){return Aa(t,e)},e.prototype.avgPool=function(t,e){return vp(t,"avgPool"),this.pool(t,e,"avg").toFloat()},e.prototype.resizeBilinear=function(t,e,n,r){vp(t,"resizeBilinear");for(var a=t.shape,o=a[0],i=a[1],s=a[2],u=a[3],c=this.readSync(t.dataId),l=new Float32Array(D([o,e,n,u])),p=[r&&e>1?i-1:i,r&&n>1?s-1:s],f=[r&&e>1?e-1:e,r&&n>1?n-1:n],d=0,h=p[0]/f[0],m=p[1]/f[1],v=0;v<o;v++)for(var g=0;g<e;g++)for(var y=h*g,x=Math.floor(y),b=y-x,w=Math.min(i-1,Math.ceil(y)),C=v*t.strides[0]+x*t.strides[1],E=v*t.strides[0]+w*t.strides[1],S=0;S<n;S++)for(var N=m*S,I=Math.floor(N),R=N-I,T=Math.min(s-1,Math.ceil(N)),k=C+I*t.strides[2],A=E+I*t.strides[2],O=C+T*t.strides[2],_=E+T*t.strides[2],F=0;F<u;F++){var M=c[k+F],B=c[A+F],P=M+(c[O+F]-M)*R,L=P+(B+(c[_+F]-B)*R-P)*b;l[d++]=L}return An(l,[o,e,n,u])},e.prototype.resizeBilinearBackprop=function(t,e,n){vp([t,e],"resizeBilinearBackprop");for(var r=e.shape,a=r[0],o=r[1],i=r[2],s=r[3],u=t.shape,c=u[1],l=u[2],p=new Float32Array(a*o*i*s),f=[n&&c>1?o-1:o,n&&l>1?i-1:i],d=[n&&c>1?c-1:c,n&&l>1?l-1:l],h=f[0]/d[0],m=f[1]/d[1],v=this.readSync(t.dataId),g=0,y=0;y<a;y++)for(var x=y*e.strides[0],b=0;b<c;b++)for(var w=b*h,C=Math.floor(w),E=Math.min(Math.ceil(w),o-1),S=x+C*e.strides[1],N=x+E*e.strides[1],I=w-C,R=1-I,T=0;T<l;T++)for(var k=T*m,A=Math.floor(k),O=Math.min(Math.ceil(k),i-1),D=k-A,_=1-D,F=S+A*e.strides[2],M=S+O*e.strides[2],B=N+A*e.strides[2],P=N+O*e.strides[2],L=R*_,V=R*D,W=I*_,z=I*D,U=0;U<s;U++){var j=v[g++];p[F+U]+=j*L,p[M+U]+=j*V,p[B+U]+=j*W,p[P+U]+=j*z}return Bn(p,[a,i,o,s],e.dtype)},e.prototype.resizeNearestNeighbor=function(t,e,n,r){vp(t,"resizeNearestNeighbor");for(var a=t.shape,o=a[0],i=a[1],s=a[2],u=a[3],c=this.readSync(t.dataId),l=new Float32Array(o*e*n*u),p=[r&&e>1?i-1:i,r&&n>1?s-1:s],f=[r&&e>1?e-1:e,r&&n>1?n-1:n],d=p[0]/f[0],h=p[1]/f[1],m=0,v=0;v<o;v++)for(var g=v*t.strides[0],y=0;y<e;y++)for(var x=d*y,b=g+Math.min(i-1,r?Math.round(x):Math.floor(x))*t.strides[1],w=0;w<n;w++)for(var C=h*w,E=b+Math.min(s-1,r?Math.round(C):Math.floor(C))*t.strides[2],S=0;S<u;S++){var N=c[E+S];l[m++]=N}return An(l,[o,e,n,u],t.dtype)},e.prototype.resizeNearestNeighborBackprop=function(t,e,n){vp([t,e],"resizeNearestNeighborBackprop");for(var r=e.shape,a=r[0],o=r[1],i=r[2],s=r[3],u=t.shape,c=u[1],l=u[2],p=new Float32Array(a*o*i*s),f=this.readSync(t.dataId),d=[n&&c>1?o-1:o,n&&l>1?i-1:i],h=[n&&c>1?c-1:c,n&&l>1?l-1:l],m=d[0]/h[0],v=d[1]/h[1],g=1/m,y=1/v,x=2*Math.ceil(g)+2,b=2*Math.ceil(y)+2,w=0;w<a;w++)for(var C=w*e.strides[0],E=0;E<o;E++)for(var S=C+E*e.strides[1],N=Math.floor(E*g),I=Math.floor(N-x/2),R=0;R<i;R++)for(var T=S+R*e.strides[2],k=Math.floor(R*y),A=Math.floor(k-b/2),O=0;O<s;O++){for(var D=0,_=0;_<x;_++){var F=_+I;if(!(F<0||F>=c)){var M=C+F*t.strides[1],B=F*m;if(E===Math.min(o-1,n?Math.round(B):Math.floor(B)))for(var P=0;P<b;P++){var L=P+A;if(!(L<0||L>=l)){var V=M+L*t.strides[2],W=L*v;R===Math.min(i-1,n?Math.round(W):Math.floor(W))&&(D+=f[V+O])}}}}p[T+O]=D}return Bn(p,e.shape,e.dtype)},e.prototype.batchNormalization=function(t,e,n,r,a,o){vp([t,e,n,a,o],"batchNorm");for(var i=this.readSync(t.dataId),s=this.readSync(e.dataId),u=this.readSync(n.dataId),c=a?this.readSync(a.dataId):new Float32Array([1]),l=o?this.readSync(o.dataId):new Float32Array([0]),p=new Float32Array(i.length),f=l.length,d=c.length,h=u.length,m=s.length,v=0,g=0,y=0,x=0,b=0;b<i.length;++b)p[b]=l[v++]+(i[b]-s[g++])*c[y++]/Math.sqrt(u[x++]+r),v>=f&&(v=0),g>=m&&(g=0),y>=d&&(y=0),x>=h&&(x=0);return Bn(p,t.shape)},e.prototype.localResponseNormalization4D=function(t,e,n,r,a){vp(t,"localResponseNormalization4D");var o=t.shape[3],i=o-1,s=this.readSync(t.dataId),u=t.size,c=new Float32Array(u);function l(t){for(var n=t%o,r=t-n+Math.max(0,n-e),a=t-n+Math.min(n+e,i),u=0;r<=a;r++){var c=s[r];u+=c*c}return u}for(var p=0;p<u;p++){var f=l(p),d=s[p]*Math.pow(n+r*f,-a);c[p]=d}return Bn(c,t.shape)},e.prototype.LRNGrad=function(t,e,n,r,a,o,i){vp(t,"LRNGrad");for(var s=t.shape[3],u=this.readSync(t.dataId),c=this.readSync(e.dataId),l=this.readSync(n.dataId),p=new Float32Array(t.size),f=t.size,d=0;d<f;d++){for(var h=d%s,m=d-h+Math.max(0,h-r),v=d-h+Math.min(s,h+r+1),g=0,y=m;y<v;y++)g+=Math.pow(c[y],2);for(g=o*g+a,y=m;y<v;y++){var x=-2*o*i*c[y]*l[d]/g;d===y&&(x+=Math.pow(g,-i)),x*=u[d],p[y]+=x}}return Bn(p,t.shape)},e.prototype.multinomial=function(t,e,n,r){vp(t,"multinomial");for(var a=e?t:ca(t),o=a.shape[0],i=a.shape[1],s=zn([o,n],"int32"),u=this.readSync(s.dataId),c=this.readSync(a.dataId),l=0;l<o;++l){var p=l*i,f=new Float32Array(i-1);f[0]=c[p];for(var d=1;d<f.length;++d)f[d]=f[d-1]+c[p+d];for(var h=sr(r.toString()),m=l*n,v=0;v<n;++v){var g=h();u[m+v]=f.length;for(var y=0;y<f.length;y++)if(g<f[y]){u[m+v]=y;break}}}return s},e.prototype.oneHot=function(t,e,n,r){vp(t,"oneHot");var a=new Float32Array(t.size*e);a.fill(r);for(var o=this.readSync(t.dataId),i=0;i<t.size;++i)o[i]>=0&&o[i]<e&&(a[i*e+o[i]]=n);return Fn(a,[t.size,e],"int32")},e.prototype.nonMaxSuppression=function(t,e,n,r,a){return vp(t,"nonMaxSuppression"),Va(this.readSync(t.dataId),this.readSync(e.dataId),n,r,a)},e.prototype.fft=function(t){return this.fftBatch(t,!1)},e.prototype.ifft=function(t){return this.fftBatch(t,!0)},e.prototype.fftBatch=function(t,e){for(var n=t.shape[0],r=t.shape[1],a=pr(t.shape,"float32"),o=pr(t.shape,"float32"),i=Tn(t).as2D(n,r),s=kn(t).as2D(n,r),u=0;u<n;u++)for(var c=i.slice([u,0],[1,r]),l=s.slice([u,0],[1,r]),p=Rn(c,l),f=this.readSync(this.fftImpl(p,e).dataId),d=0;d<r;d++){var h=Fa(f,d);a.values[u*r+d]=h.real,o.values[u*r+d]=h.imag}return Rn(a.toTensor(),o.toTensor()).as2D(n,r)},e.prototype.fftImpl=function(t,e){var n=t.as1D(),r=n.size;if(this.isExponentOf2(r)){var a=this.fftRadix2(n,r,e).as2D(t.shape[0],t.shape[1]);return e&&(a=Rn(Tn(a).div(Dn(r)),kn(a).div(Dn(r)))),a}var o=this.readSync(t.dataId),i=function(t){for(var e=new Float32Array(t.length/2),n=new Float32Array(t.length/2),r=0;r<t.length;r+=2)e[r/2]=t[r],n[r/2]=t[r+1];return{real:e,imag:n}}(this.fourierTransformByMatmul(o,r,e));return Rn(i.real,i.imag).as2D(t.shape[0],t.shape[1])},e.prototype.isExponentOf2=function(t){return 0==(t&t-1)},e.prototype.fftRadix2=function(t,e,n){if(1===e)return t;var r=this.readSync(t.dataId),a=e/2,o=function(t){for(var e=Math.ceil(t.length/4),n=new Float32Array(e),r=new Float32Array(e),a=0;a<t.length;a+=4)n[Math.floor(a/4)]=t[a],r[Math.floor(a/4)]=t[a+1];return{real:n,imag:r}}(r),i=Rn(o.real,o.imag).as1D(),s=function(t){for(var e=Math.floor(t.length/4),n=new Float32Array(e),r=new Float32Array(e),a=2;a<t.length;a+=4)n[Math.floor(a/4)]=t[a],r[Math.floor(a/4)]=t[a+1];return{real:n,imag:r}}(r),u=Rn(s.real,s.imag).as1D();i=this.fftRadix2(i,a,n),u=this.fftRadix2(u,a,n);var c=function(t,e){for(var n=new Float32Array(t/2),r=new Float32Array(t/2),a=0;a<Math.ceil(t/2);a++){var o=(e?2:-2)*Math.PI*(a/t);n[a]=Math.cos(o),r[a]=Math.sin(o)}return{real:n,imag:r}}(e,n),l=Rn(c.real,c.imag).mul(u),p=i.add(l),f=i.sub(l),d=Tn(p).concat(Tn(f)),h=kn(p).concat(kn(f));return Rn(d,h).as1D()},e.prototype.fourierTransformByMatmul=function(t,e,n){for(var r=new Float32Array(2*e),a=0;a<e;a++){for(var o=0,i=0,s=0;s<e;s++){var u=Ba(a*s,e,n),c=Fa(t,s);o+=c.real*u.real-c.imag*u.imag,i+=c.real*u.imag+c.imag*u.real}n&&(o/=e,i/=e),Ma(r,o,i,a)}return r},e.prototype.depthToSpace=function(t,e,n){T("NHWC"===n,(function(){return"Only NHWC dataFormat supported on CPU for depthToSpace. Got "+n})),T(e>1,(function(){return"blockSize should be > 1 for depthToSpace, but was: "+e}));for(var r=t.shape[0],a=t.shape[1],o=t.shape[2],i=t.shape[3],s=a*e,u=o*e,c=i/(e*e),l=this.readSync(t.dataId),p=new Float32Array(r*s*u*c),f=0,d=0;d<r;++d)for(var h=0;h<s;++h)for(var m=Math.floor(h/e),v=h%e,g=0;g<u;++g)for(var y=Math.floor(g/e),x=(v*e+g%e)*c,b=0;b<c;++b){var w=b+x+i*(y+o*(m+a*d));p[f++]=l[w]}return Bn(p,[r,s,u,c])},e.prototype.broadcastedBinaryOp=function(t,e,n,r){var a=va(t.shape,e.shape),o=pr(a,n),i=this.readSync(t.dataId),s=this.readSync(e.dataId),u=ha(t.shape,a),c=ha(e.shape,a),l=o.values;if(u.length+c.length===0)for(var p=0;p<l.length;++p)l[p]=r(i[p%i.length],s[p%s.length]);else{var f=this.bufferSync(t),d=this.bufferSync(e),h=function(n){var a=o.indexToLoc(n),p=a.slice(-t.rank);u.forEach((function(t){return p[t]=0}));var h=f.locToIndex(p),m=a.slice(-e.rank);c.forEach((function(t){return m[t]=0}));var v=d.locToIndex(m);l[n]=r(i[h],s[v])};for(p=0;p<l.length;++p)h(p)}return o.toTensor()},e.prototype.broadcastedBinaryComplexOp=function(t,e,n){var r=va(t.shape,e.shape),a=pr(r,"float32"),o=pr(r,"float32"),i=this.readSync(t.dataId),s=this.readSync(e.dataId),u=ha(t.shape,r),c=ha(e.shape,r),l=a.values,p=o.values;if(u.length+c.length===0)for(var f=0;f<l.length;f++){var d=f%i.length,h=f%s.length,m=n(i[2*d],i[2*d+1],s[2*h],s[2*h+1]);l[f]=m.real,p[f]=m.imag}else{var v=this.bufferSync(this.data.get(t.dataId).complexTensors.real),g=this.bufferSync(this.data.get(e.dataId).complexTensors.real),y=function(r){var o=a.indexToLoc(r),f=o.slice(-t.rank);u.forEach((function(t){return f[t]=0}));var d=v.locToIndex(f),h=o.slice(-e.rank);c.forEach((function(t){return h[t]=0}));var m=g.locToIndex(h),y=n(i[2*d],i[2*d+1],s[2*m],s[2*m+1]);l[r]=y.real,p[r]=y.imag};for(f=0;f<l.length;f++)y(f)}return this.complex(a.toTensor(),o.toTensor())},e.prototype.split=function(t,e,n){return Ha(t,e,n)},e.prototype.dispose=function(){},e.prototype.floatPrecision=function(){return 32},e.prototype.epsilon=function(){return 1e-7},e.prototype.cropAndResize=function(t,e,n,r,a,o){for(var i=t.shape,s=i[0],u=i[1],c=i[2],l=i[3],p=e.shape[0],f=r[0],d=r[1],h=pr([p,f,d,l],"float32"),m=this.readSync(e.dataId),v=this.readSync(n.dataId),g=this.readSync(t.dataId),y=t.strides,x=h.strides,b=0;b<p;b++){var w=4*b,C=m[w],E=m[w+1],S=m[w+2],N=m[w+3],I=v[b];if(!(I>=s))for(var R=f>1?(S-C)*(u-1)/(f-1):0,T=d>1?(N-E)*(c-1)/(d-1):0,k=0;k<f;k++){var A=f>1?C*(u-1)+k*R:.5*(C+S)*(u-1);if(A<0||A>u-1)for(var O=0;O<d;O++)for(var D=0;D<l;D++){var _=D+O*x[2]+k*x[1]+b*x[0];h.values[_]=o}else if("bilinear"===a){var F=Math.floor(A),M=Math.ceil(A),B=A-F;for(O=0;O<d;O++)if((H=d>1?E*(c-1)+O*T:.5*(E+N)*(c-1))<0||H>c-1)for(D=0;D<l;D++)_=D+O*x[2]+k*x[1]+b*x[0],h.values[_]=o;else{var P=Math.floor(H),L=Math.ceil(H),V=H-P;for(D=0;D<l;D++){var W=g[_=D+P*y[2]+F*y[1]+I*y[0]],z=g[_=D+L*y[2]+F*y[1]+I*y[0]],U=g[_=D+P*y[2]+M*y[1]+I*y[0]],j=W+(z-W)*V,G=U+(g[_=D+L*y[2]+M*y[1]+I*y[0]]-U)*V;_=D+O*x[2]+k*x[1]+b*x[0],h.values[_]=j+(G-j)*B}}}else for(O=0;O<d;++O){var H;if((H=d>1?E*(c-1)+O*T:.5*(E+N)*(c-1))<0||H>c-1)for(D=0;D<l;D++)_=D+O*x[2]+k*x[1]+b*x[0],h.values[_]=o;else{var q=Math.round(H),K=Math.round(A);for(D=0;D<l;D++){var X=D+q*y[2]+K*y[1]+I*y[0],Y=D+O*x[2]+k*x[1]+b*x[0];h.values[Y]=g[X]}}}}}return h.toTensor()},e.prototype.sparseToDense=function(t,e,n,r){var a=Kr(0,t,n),o=a.sliceRank,i=a.numUpdates,s=a.sliceSize,u=a.strides,c=a.outputSize;return this.scatter(t,e,n,c,s,i,o,u,r,!1)},e.prototype.gatherND=function(t,e){var n=e.shape,r=n[n.length-1],a=Hr(t,e),o=a[0],i=a[1],s=a[2],u=a[3];if(0===i)return An([],o,t.dtype);for(var c=new gt([i,s],t.dtype),l=this.readSync(e.dataId),p=this.readSync(t.dataId),f=0;f<i;f++){for(var d=[],h=0,m=0;m<r;m++){var v=l[f*r+m];h+=v*u[m],d.push(v)}if(h<0||h>=t.size/s)throw new Error("Invalid indices: 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y=p[h*i+g];m.push(y),v+=y*s[g]}if(v<0||v>=r/a)throw new Error("Invalid indices: "+m+" does not index into "+n);for(var x=0;x<a;x++)c?d.values[v*a+x]+=f[h*a+x]:d.values[v*a+x]=0===e.rank?f[0]:f[h*a+x]}return d.toTensor().reshape(n)},e}(fa);Lt.registerBackend("cpu",(function(){return new yp}),1),x({kernelName:"Square",backendName:"cpu",kernelFunc:function(t){var e=t.inputs,n=t.backend,r=e.x,a=n;vp(r,"square");for(var o=a.data.get(r.dataId).values,i=new Float32Array(o.length),s=0;s<o.length;++s){var u=o[s];i[s]=u*u}return{dataId:a.write(i,r.shape,r.dtype),shape:r.shape,dtype:r.dtype}}}),x({kernelName:"NonMaxSuppressionV5",backendName:"cpu",kernelFunc:function(t){var e=t.inputs,n=t.backend,r=t.attrs,a=e,o=a.boxes,i=a.scores,s=r,u=s.maxOutputSize,c=s.iouThreshold,l=s.scoreThreshold,p=s.softNmsSigma,f=n;vp(o,"NonMaxSuppressionWithScore");var d=Wa(f.data.get(o.dataId).values,f.data.get(i.dataId).values,u,c,l,p);return[d.selectedIndices,d.selectedScores]}}),x({kernelName:"Square",backendName:"webgl",kernelFunc:function(t){var e=t.inputs,n=t.backend,r=e.x,a=n,o=new cs(r.shape,"return x * x;");return a.runWebGLProgram(o,[r],r.dtype)}});var xp,bp=function(t){this.variableNames=["A"];var e=to(),n=t[0],r=t[1];this.outputShape=t,this.userCode="\n      void main() {\n        ivec3 coords = getOutputCoords();\n        int texR = coords[0];\n        int texC = coords[1];\n        int depth = coords[2];\n        vec2 uv = (vec2(texC, texR) + halfCR) / vec2("+r+".0, "+n+".0);\n\n        vec4 values = "+e.texture2D+"(A, uv);\n        float value;\n        if (depth == 0) {\n          value = values.r;\n        } else if (depth == 1) {\n          value = values.g;\n        } else if (depth == 2) {\n          value = values.b;\n        } else if (depth == 3) {\n          value = values.a;\n        }\n\n        setOutput(floor(value * 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n=[{paths:["./"+this.weightDataFileName],weights:t.weightSpecs}],r={modelTopology:t.modelTopology,format:t.format,generatedBy:t.generatedBy,convertedBy:t.convertedBy,weightsManifest:n},a=window.URL.createObjectURL(new Blob([JSON.stringify(r)],{type:"application/json"})),(o=null==this.jsonAnchor?document.createElement("a"):this.jsonAnchor).download=this.modelTopologyFileName,o.href=a,[4,rf((function(){return o.dispatchEvent(new MouseEvent("click"))}))];case 2:return s.sent(),null==t.weightData?[3,4]:((i=null==this.weightDataAnchor?document.createElement("a"):this.weightDataAnchor).download=this.weightDataFileName,i.href=e,[4,rf((function(){return i.dispatchEvent(new MouseEvent("click"))}))]);case 3:s.sent(),s.label=4;case 4:return[2,{modelArtifactsInfo:Dp(t)}]}}))}))},t.URL_SCHEME="downloads://",t}(),of=function(){function t(t){if(null==t||t.length<1)throw new Error("When calling browserFiles, at least 1 file is required, but received "+t);this.files=t}return 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BrowserFiles supports loading Keras-style tf.Model artifacts only.")},o.readAsText(t)}))]}))}))},t.prototype.checkManifestAndWeightFiles=function(t,e){for(var n=[],r=e.map((function(t){return Op(t.name)})),a={},o=0,i=t;o<i.length;o++)i[o].paths.forEach((function(t){var o=Op(t);if(-1!==n.indexOf(o))throw new Error("Duplicate file basename found in weights manifest: '"+o+"'");if(n.push(o),-1===r.indexOf(o))throw new Error("Weight file with basename '"+o+"' is not provided.");a[t]=e[r.indexOf(o)]}));if(n.length!==e.length)throw new Error("Mismatch in the number of files in weights manifest ("+n.length+") and the number of weight files provided ("+e.length+").");return a},t}();function sf(t,e,n,r){!function(t){T(null!=t&&Array.isArray(t)&&t.length>0,(function(){return"promises must be a none empty array"}))}(t),function(t,e){T(t>=0&&t<=1,(function(){return"Progress fraction must be in range [0, 1], but got startFraction "+t})),T(e>=0&&e<=1,(function(){return"Progress fraction must be in 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s(e,t),e.prototype.applyGradients=function(t){var e=this,n=Array.isArray(t)?t.map((function(t){return t.name})):Object.keys(t);Qe((function(){var r=$u(1,e.accBeta1),a=$u(1,e.accBeta2);n.forEach((function(n,o){var i=Lt.registeredVariables[n];null==e.accumulatedFirstMoment[o]&&(e.accumulatedFirstMoment[o]={originalName:n+"/m",variable:Qe((function(){return qn(i).variable(!1)}))}),null==e.accumulatedSecondMoment[o]&&(e.accumulatedSecondMoment[o]={originalName:n+"/v",variable:Qe((function(){return qn(i).variable(!1)}))});var s=Array.isArray(t)?t[o].tensor:t[n];if(null!=s){var u=e.accumulatedFirstMoment[o].variable,c=e.accumulatedSecondMoment[o].variable,l=u.mul(e.beta1).add(s.mul(1-e.beta1)),p=c.mul(e.beta2).add(s.square().mul(1-e.beta2)),f=l.div(r),d=p.div(a);u.assign(l),c.assign(p);var h=f.div(d.sqrt().add(e.epsilon)).mul(-e.learningRate).add(i);i.assign(h)}})),e.accBeta1.assign(e.accBeta1.mul(e.beta1)),e.accBeta2.assign(e.accBeta2.mul(e.beta2))})),this.incrementIterations()},e.prototype.dispose=function(){this.accBeta1.dispose(),this.accBeta2.dispose(),null!=this.accumulatedFirstMoment&&Je(this.accumulatedFirstMoment.map((function(t){return t.variable}))),null!=this.accumulatedSecondMoment&&Je(this.accumulatedSecondMoment.map((function(t){return t.variable})))},e.prototype.getWeights=function(){return u(this,void 0,void 0,(function(){var t;return c(this,(function(e){switch(e.label){case 0:return t=this.accumulatedFirstMoment.concat(this.accumulatedSecondMoment),[4,this.saveIterations()];case 1:return[2,[e.sent()].concat(t.map((function(t){return{name:t.originalName,tensor:t.variable}})))]}}))}))},e.prototype.setWeights=function(t){return u(this,void 0,void 0,(function(){var e,n=this;return c(this,(function(r){switch(r.label){case 0:return[4,this.extractIterations(t)];case 1:return t=r.sent(),Qe((function(){n.accBeta1.assign(qu(n.beta1,n.iterations_+1)),n.accBeta2.assign(qu(n.beta2,n.iterations_+1))})),e=t.length/2,this.accumulatedFirstMoment=t.slice(0,e).map((function(t){return{originalName:t.name,variable:t.tensor.variable(!1)}})),this.accumulatedSecondMoment=t.slice(e,2*e).map((function(t){return{originalName:t.name,variable:t.tensor.variable(!1)}})),[2]}}))}))},e.prototype.getConfig=function(){return{learningRate:this.learningRate,beta1:this.beta1,beta2:this.beta2,epsilon:this.epsilon}},e.fromConfig=function(t,e){return new t(e.learningRate,e.beta1,e.beta2,e.epsilon)},e.className="Adam",e}(Df);Sf(Mf);var Bf=function(t){function e(e,n,r,a,o){void 0===a&&(a=null),void 0===o&&(o=0);var i=t.call(this)||this;return i.learningRate=e,i.beta1=n,i.beta2=r,i.epsilon=a,i.decay=o,i.accumulatedFirstMoment=[],i.accumulatedWeightedInfNorm=[],Qe((function(){i.iteration=Dn(0).variable(),i.accBeta1=Dn(n).variable()})),null==a&&(i.epsilon=Lt.backend.epsilon()),i}return s(e,t),e.prototype.applyGradients=function(t){var e=this,n=Array.isArray(t)?t.map((function(t){return t.name})):Object.keys(t);Qe((function(){var r=$u(1,e.accBeta1),a=Fu(-e.learningRate,e.iteration.mul(e.decay).add(1));n.forEach((function(n,o){var i=Lt.registeredVariables[n];null==e.accumulatedFirstMoment[o]&&(e.accumulatedFirstMoment[o]={originalName:n+"/m",variable:qn(i).variable(!1)}),null==e.accumulatedWeightedInfNorm[o]&&(e.accumulatedWeightedInfNorm[o]={originalName:n+"/v",variable:qn(i).variable(!1)});var s=Array.isArray(t)?t[o].tensor:t[n];if(null!=s){var 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c(this,(function(t){switch(t.label){case 0:return[4,this.saveIterations()];case 1:return[2,[t.sent()]]}}))}))},e.prototype.setWeights=function(t){return u(this,void 0,void 0,(function(){return c(this,(function(e){switch(e.label){case 0:return[4,this.extractIterations(t)];case 1:if(0!==(t=e.sent()).length)throw new Error("SGD optimizer does not have settable weights.");return[2]}}))}))},e.prototype.getConfig=function(){return{learningRate:this.learningRate}},e.fromConfig=function(t,e){return new t(e.learningRate)},e.className="SGD",e}(Df);Sf(Pf);var Lf=function(t){function e(e,n,r){void 0===r&&(r=!1);var a=t.call(this,e)||this;return a.learningRate=e,a.momentum=n,a.useNesterov=r,a.accumulations=[],a.m=Dn(a.momentum),a}return s(e,t),e.prototype.applyGradients=function(t){var e=this;(Array.isArray(t)?t.map((function(t){return t.name})):Object.keys(t)).forEach((function(n,r){var a=Lt.registeredVariables[n];null==e.accumulations[r]&&(e.accumulations[r]={originalName:n+"/momentum",variable:Qe((function(){return qn(a).variable(!1)}))});var o=e.accumulations[r].variable,i=Array.isArray(t)?t[r].tensor:t[n];null!=i&&Qe((function(){var t,n=e.m.mul(o).add(i);t=e.useNesterov?e.c.mul(i.add(n.mul(e.m))).add(a):e.c.mul(n).add(a),o.assign(n),a.assign(t)}))})),this.incrementIterations()},e.prototype.dispose=function(){this.m.dispose(),null!=this.accumulations&&Je(this.accumulations.map((function(t){return t.variable})))},e.prototype.setMomentum=function(t){this.momentum=t},e.prototype.getWeights=function(){return u(this,void 0,void 0,(function(){return c(this,(function(t){switch(t.label){case 0:return[4,this.saveIterations()];case 1:return[2,[t.sent()].concat(this.accumulations.map((function(t){return{name:t.originalName,tensor:t.variable}})))]}}))}))},e.prototype.setWeights=function(t){return u(this,void 0,void 0,(function(){return c(this,(function(e){switch(e.label){case 0:return[4,this.extractIterations(t)];case 1:return t=e.sent(),this.accumulations=t.map((function(t){return{originalName:t.name,variable:t.tensor.variable(!1)}})),[2]}}))}))},e.prototype.getConfig=function(){return{learningRate:this.learningRate,momentum:this.momentum,useNesterov:this.useNesterov}},e.fromConfig=function(t,e){return new t(e.learningRate,e.momentum,e.useNesterov)},e.className="Momentum",e}(Pf);Sf(Lf);var Vf=function(t){function e(e,n,r,a,o){void 0===n&&(n=.9),void 0===r&&(r=0),void 0===a&&(a=null),void 0===o&&(o=!1);var i=t.call(this)||this;return i.learningRate=e,i.decay=n,i.momentum=r,i.epsilon=a,i.accumulatedMeanSquares=[],i.accumulatedMoments=[],i.accumulatedMeanGrads=[],i.centered=o,null==a&&(i.epsilon=Lt.backend.epsilon()),i}return s(e,t),e.prototype.applyGradients=function(t){var e=this;(Array.isArray(t)?t.map((function(t){return t.name})):Object.keys(t)).forEach((function(n,r){var a=Lt.registeredVariables[n];null==e.accumulatedMeanSquares[r]&&(e.accumulatedMeanSquares[r]={originalName:n+"/rms",variable:Qe((function(){return qn(a).variable(!1)}))}),null==e.accumulatedMoments[r]&&(e.accumulatedMoments[r]={originalName:n+"/momentum",variable:Qe((function(){return qn(a).variable(!1)}))}),null==e.accumulatedMeanGrads[r]&&e.centered&&(e.accumulatedMeanGrads[r]={originalName:n+"/mg",variable:Qe((function(){return qn(a).variable(!1)}))});var o=Array.isArray(t)?t[r].tensor:t[n];if(null!=o){var i=e.accumulatedMeanSquares[r].variable,s=e.accumulatedMoments[r].variable;Qe((function(){var t=i.mul(e.decay).add(o.square().mul(1-e.decay));if(e.centered){var n=e.accumulatedMeanGrads[r].variable,u=n.mul(e.decay).add(o.mul(1-e.decay)),c=s.mul(e.momentum).add(o.mul(e.learningRate).div(t.sub(u.square().add(e.epsilon)).sqrt()));i.assign(t),n.assign(u),s.assign(c);var l=a.sub(c);a.assign(l)}else{var p=i.mul(e.decay).add(o.square().mul(1-e.decay));c=s.mul(e.momentum).add(o.mul(e.learningRate).div(p.add(e.epsilon).sqrt())),i.assign(p),s.assign(c),l=a.sub(c),a.assign(l)}}))}})),this.incrementIterations()},e.prototype.dispose=function(){null!=this.accumulatedMeanSquares&&Je(this.accumulatedMeanSquares.map((function(t){return t.variable}))),null!=this.accumulatedMeanGrads&&this.centered&&Je(this.accumulatedMeanGrads.map((function(t){return t.variable}))),null!=this.accumulatedMoments&&Je(this.accumulatedMoments.map((function(t){return t.variable})))},e.prototype.getWeights=function(){return u(this,void 0,void 0,(function(){var t;return c(this,(function(e){switch(e.label){case 0:return t=this.accumulatedMeanSquares.concat(this.accumulatedMoments),this.centered&&t.push.apply(t,this.accumulatedMeanGrads),[4,this.saveIterations()];case 1:return[2,[e.sent()].concat(t.map((function(t){return{name:t.originalName,tensor:t.variable}})))]}}))}))},e.prototype.setWeights=function(t){return u(this,void 0,void 0,(function(){var e;return c(this,(function(n){switch(n.label){case 0:return[4,this.extractIterations(t)];case 1:return t=n.sent(),e=this.centered?t.length/3:t.length/2,this.accumulatedMeanSquares=t.slice(0,e).map((function(t){return{originalName:t.name,variable:t.tensor.variable(!1)}})),this.accumulatedMoments=t.slice(e,2*e).map((function(t){return{originalName:t.name,variable:t.tensor.variable(!1)}})),this.centered&&(this.accumulatedMeanGrads=t.slice(2*e,3*e).map((function(t){return{originalName:t.name,variable:t.tensor.variable(!1)}}))),[2]}}))}))},e.prototype.getConfig=function(){return{learningRate:this.learningRate,decay:this.decay,momentum:this.momentum,epsilon:this.epsilon,centered:this.centered}},e.fromConfig=function(t,e){return new t(e.learningRate,e.decay,e.momentum,e.epsilon,e.centered)},e.className="RMSProp",e}(Df);Sf(Vf);var Wf=function(){function t(){}return t.sgd=function(t){return new Pf(t)},t.momentum=function(t,e,n){return void 0===n&&(n=!1),new 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/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =============================================================================
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new Error("TensorArray dtype is "+this.dtype+" but tensor has dtype "+e.dtype);if(t.length!==e.shape[0])throw new Error("Expected len(indices) == tensor.shape[0], but saw: "+t.length+" vs. "+e.shape[0]);var n=Math.max.apply(Math,t);if(!this.dynamicSize&&n>=this.maxSize)throw new Error("Max index must be < array size ("+n+"  vs. "+this.maxSize+")");this.writeMany(t,Object(i.unstack)(e,0))},t.prototype.split=function(t,e){var n=this;if(e.dtype!==this.dtype)throw new Error("TensorArray dtype is "+this.dtype+" but tensor has dtype "+e.dtype);var r=0,a=t.map((function(t){return r+=t}));if(r!==e.shape[0])throw new Error("Expected sum of lengths to be equal to\n          tensor.shape[0], but sum of lengths is\n        "+r+", and tensor's shape is: "+e.shape);if(!this.dynamicSize&&t.length!==this.maxSize)throw new Error("TensorArray's size is not equal to the size of lengths ("+this.maxSize+" vs. "+t.length+"), and the TensorArray is not marked as dynamically resizeable");var o=0===r?0:e.size/r,s=[];Object(i.tidy)((function(){e=e.reshape([1,r,o]);for(var u=0;u<t.length;++u){var c=[0,0===u?0:a[u-1],0],l=[1,t[u],o];s[u]=Object(i.slice)(e,c,l).reshape(n.elementShape)}return s}));for(var u=[],c=0;c<t.length;c++)u[c]=c;this.writeMany(u,s)},t.prototype.assertShapesMatchAllowUndefinedSize=function(t,e,n){void 0===n&&(n=""),i.util.assert(this.shapesEqualAllowUndefinedSize(t,e),(function(){return n+" Shapes "+t+" and "+e+" must match"}))},t.prototype.shapesEqualAllowUndefinedSize=function(t,e){if(t.length!==e.length)return!1;for(var n=0;n<t.length;n++)if(-1!==t[n]&&-1!==e[n]&&t[n]!==e[n])return!1;return!0},t.nextId=0,t}();function $(t,e,n){var r=function(t,e,n){switch(t.category){case"arithmetic":return function(t,e,n){switch(t.op){case"BiasAdd":case"AddV2":case"Add":return[Object(i.add)(f("a",t,e,n),f("b",t,e,n))];case"AddN":return[Object(i.addN)(f("tensors",t,e,n))];case"FloorMod":case"Mod":return[Object(i.mod)(f("a",t,e,n),f("b",t,e,n))];case"Mul":return[Object(i.mul)(f("a",t,e,n),f("b",t,e,n))];case"RealDiv":case"Div":return[Object(i.div)(f("a",t,e,n),f("b",t,e,n))];case"DivNoNan":return[Object(i.divNoNan)(f("a",t,e,n),f("b",t,e,n))];case"FloorDiv":return[Object(i.floorDiv)(f("a",t,e,n),f("b",t,e,n))];case"Sub":return[Object(i.sub)(f("a",t,e,n),f("b",t,e,n))];case"Minimum":return[Object(i.minimum)(f("a",t,e,n),f("b",t,e,n))];case"Maximum":return[Object(i.maximum)(f("a",t,e,n),f("b",t,e,n))];case"Pow":return[Object(i.pow)(f("a",t,e,n),f("b",t,e,n))];case"SquaredDifference":return[Object(i.squaredDifference)(f("a",t,e,n),f("b",t,e,n))];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"basic_math":return function(t,e,n){switch(t.op){case"Abs":case"ComplexAbs":return[Object(i.abs)(f("x",t,e,n))];case"Acos":return[Object(i.acos)(f("x",t,e,n))];case"Acosh":return[Object(i.acosh)(f("x",t,e,n))];case"Asin":return[Object(i.asin)(f("x",t,e,n))];case"Asinh":return[Object(i.asinh)(f("x",t,e,n))];case"Atan":return[Object(i.atan)(f("x",t,e,n))];case"Atan2":return[Object(i.atan2)(f("x",t,e,n),f("y",t,e,n))];case"Atanh":return[Object(i.atanh)(f("x",t,e,n))];case"Ceil":return[Object(i.ceil)(f("x",t,e,n))];case"Complex":return[Object(i.complex)(f("real",t,e,n),f("imag",t,e,n))];case"Cos":return[Object(i.cos)(f("x",t,e,n))];case"Cosh":return[Object(i.cosh)(f("x",t,e,n))];case"Elu":return[Object(i.elu)(f("x",t,e,n))];case"Erf":return[Object(i.erf)(f("x",t,e,n))];case"Exp":return[Object(i.exp)(f("x",t,e,n))];case"Expm1":return[Object(i.expm1)(f("x",t,e,n))];case"Floor":return[Object(i.floor)(f("x",t,e,n))];case"Log":return[Object(i.log)(f("x",t,e,n))];case"Log1p":return[Object(i.log1p)(f("x",t,e,n))];case"Imag":return[Object(i.imag)(f("x",t,e,n))];case"Neg":return[Object(i.neg)(f("x",t,e,n))];case"Reciprocal":return[Object(i.reciprocal)(f("x",t,e,n))];case"Real":return[Object(i.real)(f("x",t,e,n))];case"Relu":return[Object(i.relu)(f("x",t,e,n))];case"Round":return[Object(i.round)(f("x",t,e,n))];case"Selu":return[Object(i.selu)(f("x",t,e,n))];case"Sigmoid":return[Object(i.sigmoid)(f("x",t,e,n))];case"Sin":return[Object(i.sin)(f("x",t,e,n))];case"Sign":return[Object(i.sign)(f("x",t,e,n))];case"Sinh":return[Object(i.sinh)(f("x",t,e,n))];case"Softplus":return[Object(i.softplus)(f("x",t,e,n))];case"Sqrt":return[Object(i.sqrt)(f("x",t,e,n))];case"Square":return[Object(i.square)(f("x",t,e,n))];case"Tanh":return[Object(i.tanh)(f("x",t,e,n))];case"Tan":return[Object(i.tan)(f("x",t,e,n))];case"Relu6":case"ClipByValue":return[Object(i.clipByValue)(f("x",t,e,n),f("clipValueMin",t,e,n),f("clipValueMax",t,e,n))];case"Rsqrt":return[Object(i.rsqrt)(d(t.inputNames[0],e,n))];case"Prod":return[Object(i.prod)(f("x",t,e,n),f("axes",t,e,n))];case"LeakyRelu":return[Object(i.leakyRelu)(f("x",t,e,n),f("alpha",t,e,n))];case"Prelu":return[Object(i.prelu)(f("x",t,e,n),f("alpha",t,e,n))];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"control":return function(t,e,n){return u(this,void 0,void 0,(function(){var r,a,o,s,u,l,p,h,m,v,g,y,x,b,w,C,E,S,N,I,R,T,k,A,O,D,_,F,M,B,P,L,V,W,z;return c(this,(function(c){switch(c.label){case 0:switch(t.op){case"LoopCond":return[3,1];case"Switch":return[3,2];case"Merge":return[3,4];case"Enter":return[3,5];case"Exit":return[3,6];case"NextIteration":return[3,7];case"TensorArrayV3":return[3,8];case"TensorArrayWriteV3":return[3,9];case"TensorArrayReadV3":return[3,10];case"TensorArrayGatherV3":return[3,11];case"TensorArrayScatterV3":return[3,12];case"TensorArrayConcatV3":return[3,13];case"TensorArraySplitV3":return[3,14];case"TensorArraySizeV3":return[3,15];case"TensorArrayCloseV3":return[3,16]}return[3,17];case 1:return[2,[f("pred",t,e,n).clone()]];case 2:return r=f("pred",t,e,n),a=f("data",t,e,n),[4,r.data()];case 3:return[2,c.sent()[0]?[void 0,a.clone()]:[a.clone(),void 0]];case 4:return[2,(o=t.inputNames.find((function(t){return void 0!==d(t,e,n)})))?[d(o,e,n).clone()]:void 0];case 5:return s=f("frameName",t,e,n),u=f("tensor",t,e,n),n.enterFrame(s),[2,[u.clone()]];case 6:return l=f("tensor",t,e,n),n.exitFrame(),[2,[l.clone()]];case 7:return p=f("tensor",t,e,n),n.nextIteration(),[2,[p.clone()]];case 8:return h=f("size",t,e,n),m=f("dtype",t,e,n),v=f("elementShape",t,e,n),g=f("dynamicSize",t,e,n),y=f("clearAfterRead",t,e,n),x=f("identicalElementShapes",t,e,n),b=f("name",t,e,n),w=new Y(b,m,h,v,x,g,y),n.addTensorArray(w),[2,[Object(i.scalar)(w.id),Object(i.scalar)(1)]];case 9:return C=f("tensorArrayId",t,e,n),E=f("index",t,e,n),S=f("tensor",t,e,n),n.getTensorArray(C).write(E,S),[2,[Object(i.scalar)(1)]];case 10:return N=f("tensorArrayId",t,e,n),I=f("index",t,e,n),[2,[n.getTensorArray(N).read(I)]];case 11:return R=f("tensorArrayId",t,e,n),T=f("indices",t,e,n),k=f("dtype",t,e,n),[2,[n.getTensorArray(R).gather(T,k)]];case 12:return A=f("tensorArrayId",t,e,n),O=f("indices",t,e,n),D=f("tensor",t,e,n),n.getTensorArray(A).scatter(O,D),[2,[Object(i.scalar)(1)]];case 13:return _=f("tensorArrayId",t,e,n),F=n.getTensorArray(_),M=f("dtype",t,e,n),[2,[F.concat(M)]];case 14:return B=f("tensorArrayId",t,e,n),P=f("tensor",t,e,n),L=f("lengths",t,e,n),n.getTensorArray(B).split(L,P),[2,[Object(i.scalar)(1)]];case 15:return V=f("tensorArrayId",t,e,n),W=n.getTensorArray(V),[2,[Object(i.scalar)(W.size(),"int32")]];case 16:return z=f("tensorArrayId",t,e,n),n.getTensorArray(z).clearAndClose(),[2,[Object(i.scalar)(0)]];case 17:throw TypeError("Node type "+t.op+" is not implemented")}}))}))}(t,e,n);case"convolution":return function(t,e,n){switch(t.op){case"Conv1D":var r=f("stride",t,e,n),a=f("pad",t,e,n),o=f("dataFormat",t,e,n).toUpperCase(),s=f("dilation",t,e,n);return[Object(i.conv1d)(f("x",t,e,n),f("filter",t,e,n),r,a,o,s)];case"Conv2D":r=f("strides",t,e,n),a=f("pad",t,e,n),o=f("dataFormat",t,e,n).toUpperCase();var u=f("dilations",t,e,n);return[Object(i.conv2d)(f("x",t,e,n),f("filter",t,e,n),[r[1],r[2]],a,o,[u[1],u[2]])];case"_FusedConv2D":case"FusedDepthwiseConv2dNative":var c=f("fusedOps",t,e,n),l=c[0],p=c[1],d="biasadd"===l,h="prelu"===p,m="fusedbatchnorm"===l,v=f("numArgs",t,e,n);if(d){if(h&&2!==v)throw new Error("FusedConv2d and DepthwiseConv2d with BiasAdd and Prelu must have two extra arguments: bias and alpha.");if(!h&&1!==v)throw new Error("FusedConv2d and DepthwiseConv2d with BiasAdd must have one extra argument: bias.")}if(m)throw new Error("FusedConv2d and DepthwiseConv2d with FusedBatchNorm is not supported.");r=f("strides",t,e,n),a=f("pad",t,e,n),o=f("dataFormat",t,e,n).toUpperCase(),u=f("dilations",t,e,n);var g=f("args",t,e,n),y=g[0],x=g[1];return[("_FusedConv2D"===t.op?i.fused.conv2d:i.fused.depthwiseConv2d)({x:f("x",t,e,n),filter:f("filter",t,e,n),strides:[r[1],r[2]],pad:a,dataFormat:o,dilations:[u[1],u[2]],bias:y,activation:p,preluActivationWeights:x})];case"Conv2DBackpropInput":case"Conv2dTranspose":var b=f("outputShape",t,e,n);return r=f("strides",t,e,n),a=f("pad",t,e,n),[Object(i.conv2dTranspose)(f("x",t,e,n),f("filter",t,e,n),b,[r[1],r[2]],a)];case"DepthwiseConv2dNative":case"DepthwiseConv2d":return r=f("strides",t,e,n),a=f("pad",t,e,n),u=f("dilations",t,e,n),o=f("dataFormat",t,e,n).toUpperCase(),[Object(i.depthwiseConv2d)(f("input",t,e,n),f("filter",t,e,n),[r[1],r[2]],a,o,[u[1],u[2]])];case"Conv3D":return r=f("strides",t,e,n),a=f("pad",t,e,n),o=f("dataFormat",t,e,n).toUpperCase(),u=f("dilations",t,e,n),[Object(i.conv3d)(f("x",t,e,n),f("filter",t,e,n),[r[1],r[2],r[3]],a,o,[u[1],u[2],u[3]])];case"AvgPool":r=f("strides",t,e,n),a=f("pad",t,e,n);var w=f("kernelSize",t,e,n);return[Object(i.avgPool)(f("x",t,e,n),[w[1],w[2]],[r[1],r[2]],a)];case"MaxPool":return r=f("strides",t,e,n),a=f("pad",t,e,n),w=f("kernelSize",t,e,n),[Object(i.maxPool)(f("x",t,e,n),[w[1],w[2]],[r[1],r[2]],a)];case"AvgPool3D":return r=f("strides",t,e,n),a=f("pad",t,e,n),w=f("kernelSize",t,e,n),[Object(i.avgPool3d)(f("x",t,e,n),[w[1],w[2],w[3]],[r[1],r[2],r[3]],a)];case"MaxPool3D":return r=f("strides",t,e,n),a=f("pad",t,e,n),w=f("kernelSize",t,e,n),[Object(i.maxPool3d)(f("x",t,e,n),[w[1],w[2],w[3]],[r[1],r[2],r[3]],a)];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"creation":return function(t,e,n){switch(t.op){case"Fill":var r=f("shape",t,e,n),a=f("dtype",t,e,n),o=f("value",t,e,n);return[Object(i.fill)(r,o,a)];case"LinSpace":var s=f("start",t,e,n),u=f("stop",t,e,n),c=f("num",t,e,n);return[Object(i.linspace)(s,u,c)];case"Multinomial":var l=f("logits",t,e,n),p=f("numSamples",t,e,n),d=f("seed",t,e,n);return[Object(i.multinomial)(l,p,d)];case"OneHot":var h=f("indices",t,e,n),m=f("depth",t,e,n),v=f("onValue",t,e,n),g=f("offValue",t,e,n);return[Object(i.oneHot)(h,m,v,g)];case"Ones":return[Object(i.ones)(f("shape",t,e,n),f("dtype",t,e,n))];case"OnesLike":return[Object(i.onesLike)(f("x",t,e,n))];case"RandomUniform":return[Object(i.randomUniform)(f("shape",t,e,n),f("minval",t,e,n),f("maxval",t,e,n),f("dtype",t,e,n))];case"Range":s=f("start",t,e,n);var y=f("stop",t,e,n),x=f("step",t,e,n);return[Object(i.range)(s,y,x,f("dtype",t,e,n))];case"TruncatedNormal":r=f("shape",t,e,n);var b=f("mean",t,e,n),w=f("stdDev",t,e,n);return d=f("seed",t,e,n),[Object(i.truncatedNormal)(r,b,w,f("dtype",t,e,n),d)];case"Zeros":return[Object(i.zeros)(f("shape",t,e,n),f("dtype",t,e,n))];case"ZerosLike":return[Object(i.zerosLike)(f("x",t,e,n))];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"dynamic":return function(t,e,n){return u(this,void 0,void 0,(function(){var r,a,o,s,u;return c(this,(function(c){switch(c.label){case 0:switch(t.op){case"NonMaxSuppressionV3":case"NonMaxSuppressionV2":return[3,1];case"Where":return[3,3];case"ListDiff":return[3,5]}return[3,6];case 1:return r=f("boxes",t,e,n),a=f("scores",t,e,n),o=f("maxOutputSize",t,e,n),s=f("iouThreshold",t,e,n),u=f("scoreThreshold",t,e,n),[4,i.image.nonMaxSuppressionAsync(r,a,o,s,u)];case 2:return[2,[c.sent()]];case 3:return[4,Object(i.whereAsync)(f("condition",t,e,n).asType("bool"))];case 4:return[2,[c.sent()]];case 5:return[2,Object(i.setdiff1dAsync)(f("x",t,e,n),f("y",t,e,n))];case 6:throw TypeError("Node type "+t.op+" is not implemented")}}))}))}(t,e,n);case"evaluation":return function(t,e,n){switch(t.op){case"TopKV2":var r=f("x",t,e,n),a=f("k",t,e,n),o=f("sorted",t,e,n),s=Object(i.topk)(r,a,o);return[s.values,s.indices];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"image":return function(t,e,n){switch(t.op){case"ResizeBilinear":var r=f("images",t,e,n),a=f("size",t,e,n),o=f("alignCorners",t,e,n);return[i.image.resizeBilinear(r,[a[0],a[1]],o)];case"ResizeNearestNeighbor":return r=f("images",t,e,n),a=f("size",t,e,n),o=f("alignCorners",t,e,n),[i.image.resizeNearestNeighbor(r,[a[0],a[1]],o)];case"CropAndResize":var s=f("image",t,e,n),u=f("boxes",t,e,n),c=f("boxInd",t,e,n),l=f("cropSize",t,e,n),p=f("method",t,e,n),d=f("extrapolationValue",t,e,n);return[i.image.cropAndResize(s,u,c,l,p,d)];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"graph":return function(t,e,n){switch(t.op){case"Const":return e[t.name];case"PlaceholderWithDefault":var r=f("default",t,e,n);return[d(t.name,e,n)||r];case"Placeholder":return[d(t.name,e,n)];case"Identity":case"StopGradient":case"FakeQuantWithMinMaxVars":return[f("x",t,e,n).clone()];case"IdentityN":return f("x",t,e,n).map((function(t){return t.clone()}));case"Snapshot":return[f("x",t,e,n).clone()];case"Shape":return[Object(i.tensor1d)(f("x",t,e,n).shape,"int32")];case"ShapeN":return f("x",t,e,n).map((function(t){return Object(i.tensor1d)(t.shape)}));case"Size":return[Object(i.scalar)(f("x",t,e,n).size,"int32")];case"Rank":return[Object(i.scalar)(f("x",t,e,n).rank,"int32")];case"NoOp":return[Object(i.scalar)(1)];case"Print":var a=f("x",t,e,n),o=f("data",t,e,n),s=f("message",t,e,n),u=f("summarize",t,e,n);console.warn("The graph has a tf.print() operation,usually used for debugging, which slows down performance."),console.log(s);for(var c=0;c<o.length;c++)console.log(Array.prototype.slice.call(o[c].dataSync()).slice(0,u));return[a];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"logical":return function(t,e,n){switch(t.op){case"Equal":return[Object(i.equal)(f("a",t,e,n),f("b",t,e,n))];case"NotEqual":return[Object(i.notEqual)(f("a",t,e,n),f("b",t,e,n))];case"Greater":return[Object(i.greater)(f("a",t,e,n),f("b",t,e,n))];case"GreaterEqual":return[Object(i.greaterEqual)(f("a",t,e,n),f("b",t,e,n))];case"Less":return[Object(i.less)(f("a",t,e,n),f("b",t,e,n))];case"LessEqual":return[Object(i.lessEqual)(f("a",t,e,n),f("b",t,e,n))];case"LogicalAnd":return[Object(i.logicalAnd)(f("a",t,e,n),f("b",t,e,n))];case"LogicalNot":return[Object(i.logicalNot)(f("a",t,e,n))];case"LogicalOr":return[Object(i.logicalOr)(f("a",t,e,n),f("b",t,e,n))];case"Select":return[Object(i.where)(f("condition",t,e,n),f("a",t,e,n),f("b",t,e,n))];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"matrices":return function(t,e,n){switch(t.op){case"BatchMatMul":case"BatchMatMulV2":case"MatMul":return[Object(i.matMul)(f("a",t,e,n),f("b",t,e,n),f("transposeA",t,e,n),f("transposeB",t,e,n))];case"Transpose":return[Object(i.transpose)(f("x",t,e,n),f("perm",t,e,n))];case"_FusedMatMul":var r=f("fusedOps",t,e,n),a=r[0],o=r[1],s="biasadd"===a,u="prelu"===o,c=f("numArgs",t,e,n);if(s){if(u&&2!==c)throw new Error("Fused MatMul with BiasAdd and Prelu must have two extra arguments: bias and alpha.");if(!u&&1!==c)throw new Error("Fused MatMul with BiasAdd must have one extra argument: bias.")}var l=f("args",t,e,n),p=l[0],d=l[1];return[i.fused.matMul({a:f("a",t,e,n),b:f("b",t,e,n),transposeA:f("transposeA",t,e,n),transposeB:f("transposeB",t,e,n),bias:p,activation:o,preluActivationWeights:d})];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"normalization":return function(t,e,n){switch(t.op){case"FusedBatchNorm":case"FusedBatchNormV2":case"FusedBatchNormV3":return[Object(i.batchNorm)(f("x",t,e,n),f("mean",t,e,n),f("variance",t,e,n),f("offset",t,e,n),f("scale",t,e,n),f("epsilon",t,e,n))];case"LRN":return[Object(i.localResponseNormalization)(f("x",t,e,n),f("radius",t,e,n),f("bias",t,e,n),f("alpha",t,e,n),f("beta",t,e,n))];case"Softmax":return[Object(i.softmax)(f("x",t,e,n))];case"LogSoftmax":return[Object(i.logSoftmax)(f("x",t,e,n))];case"SparseToDense":return[Object(i.sparseToDense)(f("sparseIndices",t,e,n),f("outputShape",t,e,n),f("sparseValues",t,e,n),f("defaultValue",t,e,n))];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"reduction":return function(t,e,n){switch(t.op){case"Max":var r=f("axis",t,e,n),a=f("keepDims",t,e,n);return[Object(i.max)(f("x",t,e,n),r,a)];case"Mean":return r=f("axis",t,e,n),a=f("keepDims",t,e,n),[Object(i.mean)(f("x",t,e,n),r,a)];case"Min":return r=f("axis",t,e,n),a=f("keepDims",t,e,n),[Object(i.min)(f("x",t,e,n),r,a)];case"Sum":return r=f("axis",t,e,n),a=f("keepDims",t,e,n),[Object(i.sum)(f("x",t,e,n),r,a)];case"All":return r=f("axis",t,e,n),a=f("keepDims",t,e,n),[Object(i.all)(f("x",t,e,n),r,a)];case"Any":return r=f("axis",t,e,n),a=f("keepDims",t,e,n),[Object(i.any)(f("x",t,e,n),r,a)];case"ArgMax":return r=f("axis",t,e,n),[Object(i.argMax)(f("x",t,e,n),r)];case"ArgMin":return r=f("axis",t,e,n),[Object(i.argMin)(f("x",t,e,n),r)];case"Prod":return r=f("axis",t,e,n),a=f("keepDims",t,e,n),[Object(i.prod)(f("x",t,e,n),r,a)];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"slice_join":return function(t,e,n){switch(t.op){case"ConcatV2":case"Concat":var r=f("n",t,e,n),a=f("axis",t,e,n),o=f("tensors",t,e,n);return o=o.slice(0,r),[Object(i.concat)(o,a)];case"GatherV2":case"Gather":a=f("axis",t,e,n);var s=f("x",t,e,n),u=f("indices",t,e,n);return[Object(i.gather)(s,u.asType("int32"),a)];case"ReverseV2":case"Reverse":return a=f("axis",t,e,n),s=f("x",t,e,n),[Object(i.reverse)(s,a)];case"Slice":var c=f("begin",t,e,n),l=f("size",t,e,n);return[Object(i.slice)(f("x",t,e,n),c,l)];case"StridedSlice":c=f("begin",t,e,n);var p=f("end",t,e,n),d=f("strides",t,e,n),h=f("beginMask",t,e,n),m=f("endMask",t,e,n),v=f("ellipsisMask",t,e,n),g=f("newAxisMask",t,e,n),y=f("shrinkAxisMask",t,e,n),x=f("x",t,e,n);if(1===c.length&&x.shape.length>1)for(var b=1;b<x.shape.length;b++)c.push(0),p.push(x.shape[b]),d.push(d[0]);return[Object(i.stridedSlice)(x,c,p,d,h,m,v,g,y)];case"Pack":return Object(i.tidy)((function(){var r=f("axis",t,e,n),a=f("tensors",t,e,n),o=a[0].shape,s=a[0].squeeze().shape,u=a.map((function(t){var e=i.util.arraysEqual(t.shape,o);if(!e&&!i.util.arraysEqual(t.squeeze().shape,s))throw new Error("the input tensors shape does not match");return e?t:t.reshape(o)}));return[Object(i.stack)(u,r)]}));case"Unpack":return Object(i.tidy)((function(){var r=f("axis",t,e,n),a=f("tensor",t,e,n);return Object(i.unstack)(a,r)}));case"Tile":var w=f("reps",t,e,n);return[Object(i.tile)(f("x",t,e,n),w)];case"Split":case"SplitV":a=f("axis",t,e,n);var C=f("numOrSizeSplits",t,e,n);return Object(i.split)(f("x",t,e,n),C,a);case"ScatterNd":u=f("indices",t,e,n);var E=f("values",t,e,n),S=f("shape",t,e,n);return[Object(i.scatterND)(u,E,S)];case"GatherNd":var N=f("x",t,e,n);return u=f("indices",t,e,n),[Object(i.gatherND)(N,u)];case"SparseToDense":u=f("sparseIndices",t,e,n),S=f("outputShape",t,e,n);var I=f("sparseValues",t,e,n),R=f("defaultValue",t,e,n);return[Object(i.sparseToDense)(u,I,S,I.dtype===R.dtype?R:R.asType(I.dtype))];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"spectral":return function(t,e,n){switch(t.op){case"FFT":return[Object(i.fft)(f("x",t,e,n))];case"IFFT":return[Object(i.ifft)(f("x",t,e,n))];case"RFFT":return[Object(i.rfft)(f("x",t,e,n))];case"IRFFT":return[Object(i.irfft)(f("x",t,e,n))];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"transformation":return function(t,e,n){switch(t.op){case"Cast":return[Object(i.cast)(f("x",t,e,n),f("dtype",t,e,n))];case"ExpandDims":var r=f("axis",t,e,n);return[Object(i.expandDims)(f("x",t,e,n),r)];case"Squeeze":return r=f("axis",t,e,n),[Object(i.squeeze)(f("x",t,e,n),r)];case"Reshape":return[Object(i.reshape)(f("x",t,e,n),f("shape",t,e,n))];case"PadV2":case"Pad":return[Object(i.pad)(f("x",t,e,n),g(f("padding",t,e,n),2),f("constantValue",t,e,n))];case"SpaceToBatchND":var a=f("blockShape",t,e,n),o=g(f("paddings",t,e,n),2);return[Object(i.spaceToBatchND)(f("x",t,e,n),a,o)];case"BatchToSpaceND":a=f("blockShape",t,e,n);var s=g(f("crops",t,e,n),2);return[Object(i.batchToSpaceND)(f("x",t,e,n),a,s)];case"DepthToSpace":var u=f("blockSize",t,e,n),c=f("dataFormat",t,e,n).toUpperCase();return[Object(i.depthToSpace)(f("x",t,e,n),u,c)];default:throw TypeError("Node type "+t.op+" is not implemented")}}(t,e,n);case"custom":var r=p(t.op);if(r&&r.customExecutor)return r.customExecutor(new X(t,e,n));throw TypeError("Custom op "+t.op+" is not registered.");default:throw TypeError("Unknown op '"+t.op+"'. File an issue at https://github.com/tensorflow/tfjs/issues so we can add it, or register a custom execution with tf.registerOp()")}}(t,e,n);return r instanceof Promise?r.then((function(t){return[].concat(t)})):[].concat(r)}var Q=function(){function t(t,e){this.weightMap=t,this.tensorArrayMap=e,this.rootContext={id:0,frameName:"",iterationId:0},this.contexts=[this.rootContext],this.lastId=0,this.generateCurrentContextIds()}return t.prototype.newFrame=function(t,e){return{id:t,frameName:e,iterationId:0}},Object.defineProperty(t.prototype,"currentContext",{get:function(){return this.contexts},set:function(t){this.contexts!==t&&(this.contexts=t,this.generateCurrentContextIds())},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"currentContextId",{get:function(){return this._currentContextIds[0]},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"currentContextIds",{get:function(){return this._currentContextIds},enumerable:!0,configurable:!0}),t.prototype.generateCurrentContextIds=function(){for(var t=[],e=0;e<this.contexts.length-1;e++){var n=this.contexts.slice(0,this.contexts.length-e);t.push(this.contextIdforContexts(n))}t.push(""),this._currentContextIds=t},t.prototype.contextIdforContexts=function(t){return t?t.map((function(t){return 0===t.id&&0===t.iterationId?"":t.frameName+"-"+t.iterationId})).join("/"):""},t.prototype.enterFrame=function(t){this.contexts&&(this.lastId++,this.contexts=this.contexts.slice(),this.contexts.push(this.newFrame(this.lastId,t)),this._currentContextIds.unshift(this.contextIdforContexts(this.contexts)))},t.prototype.exitFrame=function(){if(!(this.contexts&&this.contexts.length>1))throw new Error("Cannot exit frame, the context is empty");this.contexts=this.contexts.slice(),this.contexts.splice(-1),this.currentContextIds.shift()},t.prototype.nextIteration=function(){if(!(this.contexts&&this.contexts.length>0))throw new Error("Cannot increase frame iteration, the context is empty");this.contexts=this.contexts.slice(),this.lastId++;var t=Object.assign({},this.contexts[this.contexts.length-1]);t.iterationId+=1,t.id=this.lastId,this.contexts.splice(-1,1,t),this._currentContextIds.splice(0,1,this.contextIdforContexts(this.contexts))},t.prototype.getWeight=function(t){return this.weightMap[t]},t.prototype.addTensorArray=function(t){this.tensorArrayMap[t.id]=t},t.prototype.getTensorArray=function(t){return this.tensorArrayMap[t]},t}();function J(t,e,n){for(var r=new Set,a=[],o=null,i=null,s=new Set,u=Object.keys(t).map((function(t){return v(t)[0]})),c=e.slice();c.length>0;){var l=c.pop();(et(l)||nt(l))&&null==o&&(i=(o=l).children.map((function(t){return t.name})).filter((function(t){return r.has(t)}))),r.add(l.name),null==n[l.name]&&-1===u.indexOf(l.name)&&(0!==l.inputs.length?l.inputs.forEach((function(t){s.has(t.name)||(s.add(t.name),c.push(t))})):a.push(l.name))}return{inputs:t,outputs:e,usedNodes:r,missingInputs:a,dynamicNode:o,syncInputs:i}}var Z=["Switch","Merge","Enter","Exit","NextIteration"],tt=["NonMaxSuppressionV2","NonMaxSuppressionV3","Where"];function et(t){return Z.indexOf(t.op)>=0}function nt(t){return tt.indexOf(t.op)>=0}var rt=function(){function t(t){this.graph=t,this.compiledMap=new Map,this._weightMap={},this.SEPERATOR=",",this._outputs=t.outputs,this._inputs=t.inputs,this._signature=t.signature}return Object.defineProperty(t.prototype,"weightMap",{get:function(){return this._weightMap},set:function(t){var e=Object.keys(t).map((function(e){return t[e].map((function(t){return t.id}))}));this.weightIds=[].concat.apply([],e),this._weightMap=t},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"inputs",{get:function(){return this._inputs.map((function(t){return{name:t.name,shape:t.attrParams.shape?t.attrParams.shape.value:void 0,dtype:t.attrParams.dtype?t.attrParams.dtype.value:void 0}}))},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"outputs",{get:function(){return this._outputs.map((function(t){return{name:t.name,shape:t.attrParams.shape?t.attrParams.shape.value:void 0,dtype:t.attrParams.dtype?t.attrParams.dtype.value:void 0}}))},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"inputNodes",{get:function(){return this._inputs.map((function(t){return t.signatureKey||t.name}))},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"outputNodes",{get:function(){return this._outputs.map((function(t){return t.signatureKey||t.name}))},enumerable:!0,configurable:!0}),t.prototype.getCompilationKey=function(t,e){var n=t.map((function(t){return t.name})).sort(),r=e.map((function(t){return t.name})).sort();return n.join(this.SEPERATOR)+"--"+r.join(this.SEPERATOR)},t.prototype.compile=function(t,e){var n=J(t,e,this.weightMap),r=n.missingInputs,a=n.dynamicNode,o=n.syncInputs;if(null!=a)throw new Error("This execution contains the node '"+a.name+"', which has the dynamic op '"+a.op+"'. Please use model.executeAsync() instead. Alternatively, to avoid the dynamic ops, specify the inputs ["+o+"]");if(r.length>0){var i=e.map((function(t){return t.name})),s=Object.keys(t);throw new Error("Cannot compute the outputs ["+i+"] from the provided inputs ["+s+"]. Missing the following inputs: ["+r+"]")}return function(t,e,n){var r=n.usedNodes,a=n.inputs,o=[];Object.keys(a).map((function(t){return v(t)[0]})).map((function(e){return t.nodes[e]})).forEach((function(t){r.has(t.name)&&o.push(t)})),t.weights.forEach((function(t){r.has(t.name)&&o.push(t)}));for(var i=new Set,s=[];o.length>0;){var u=o.pop();i.add(u.name),e[u.name]||s.push(u),u.children.forEach((function(t){!i.has(t.name)&&r.has(t.name)&&t.inputs.every((function(t){return i.has(t.name)}))&&o.push(t)}))}return s}(this.graph,this.weightMap,n)},t.prototype.execute=function(t,e){var n=this;t=this.mapInputs(t);var r=Object.keys(t).sort();this.checkInputs(t),this.checkInputShapeAndType(t),e=this.mapOutputs(e),this.checkOutputs(e);var a=r.map((function(t){return n.graph.nodes[v(t)[0]]})),o=e.map((function(t){return n.graph.nodes[v(t)[0]]})),u=this.getCompilationKey(a,o),c=this.compiledMap.get(u);null==c&&(c=this.compile(t,o),this.compiledMap.set(u,c));var l={};return Object(i.tidy)((function(){var r=new Q(n._weightMap,l),a=s({},n.weightMap);Object.keys(t).forEach((function(e){var n=v(e),r=n[0],o=[];o[n[1]]=t[e],a[r]=o}));for(var o=n.getFrozenTensorIds(a),i={},u=0;u<c.length;u++){var p=c[u];if(!a[p.name]){var f=$(p,a,r);if(f instanceof Promise)throw new Error("The execution of the op '"+p.op+"' returned a promise. 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You can use model.execute() instead."),(w=o.filter((function(t){return!et(t)&&!d(t.name,m,e)})).map((function(t){return t.name}))).length>0)throw C="",null!=p&&(C="Alternatively, to avoid the dynamic ops, use model.execute() and specify the inputs ["+f+"]"),new Error("Cannot compute the outputs ["+w+"] from the provided inputs ["+r+"]. Consider providing the following inputs: ["+l+"]. 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i=h(t.name,n)[0];!a[i]&&o.has(t.name)&&("Merge"===t.op?t.inputNames.some((function(t){return!!d(t,r,n)}))&&(a[i]=!0,e.push({contexts:n.currentContext,node:t})):t.inputNames.every((function(t){return!!d(t,r,n)}))&&(a[i]=!0,e.push({contexts:n.currentContext,node:t})))}))},t.prototype.dispose=function(){var t=this;Object.keys(this.weightMap).forEach((function(e){return t.weightMap[e].forEach((function(t){return t.dispose()}))}))},t.prototype.checkInputShapeAndType=function(t){var e=this;Object.keys(t).forEach((function(n){var r=t[n],a=v(n)[0],o=e.graph.nodes[a];if(o.attrParams.shape&&o.attrParams.shape.value){var s=o.attrParams.shape.value,u=s.length===r.shape.length&&r.shape.every((function(t,e){return-1===s[e]||s[e]===t}));i.util.assert(u,(function(){return"The shape of dict['"+o.name+"'] provided in model.execute(dict) must be ["+s+"], but was ["+r.shape+"]"}))}o.attrParams.dtype&&o.attrParams.dtype.value&&i.util.assert(r.dtype===o.attrParams.dtype.value,(function(){return"The dtype of 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ct={flipHorizontal:!1,internalResolution:"medium",segmentationThreshold:.7,maxDetections:10,scoreThreshold:.4,nmsRadius:20},lt={flipHorizontal:!1,internalResolution:"medium",segmentationThreshold:.7,maxDetections:10,scoreThreshold:.4,nmsRadius:20,minKeypointScore:.3,refineSteps:10};function pt(t){var e=t.segmentationThreshold,n=t.maxDetections,r=t.scoreThreshold,a=t.nmsRadius;if(e<0||e>1)throw new Error("segmentationThreshold "+e+". 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b=c.sent(),w=b[0],C=b[1],E=b[2],S=b[3],N=rt(N=j(w,C,E,S,this.baseModel.outputStride,e.maxDetections,e.scoreThreshold,e.nmsRadius),[a,o],i,f,!1),[4,A(h,m,N,a,o,this.baseModel.outputStride,i,f,e.scoreThreshold,e.refineSteps,e.minKeypointScore,e.maxDetections)];case 2:return I=c.sent(),l.dispose(),h.dispose(),m.dispose(),v.dispose(),g.dispose(),y.dispose(),x.dispose(),[2,I]}}))}))},t.prototype.segmentPersonPartsActivation=function(t,e,n){var a=this;void 0===n&&(n=.5);var o=Y(t),i=o[0],s=o[1],u=Z(e,this.baseModel.outputStride,[i,s]),c=et(t,u),l=c.resized,d=c.padding,h=Object(r.tidy)((function(){var t=a.predictForPersonSegmentationAndPart(l),e=t.segmentLogits,r=t.partHeatmapLogits,o=t.heatmapScores,u=t.offsets,c=t.displacementFwd,h=t.displacementBwd,m=l.shape,v=m[0],g=m[1],y=tt(e,[i,s],[v,g],[[d.top,d.bottom],[d.left,d.right]],!0),x=tt(r,[i,s],[v,g],[[d.top,d.bottom],[d.left,d.right]],!0);return{partSegmentation:f(p(y.squeeze(),n),x),heatmapScores:o,offsets:u,displacementFwd:c,displacementBwd:h}})),m=h.partSegmentation,v=h.heatmapScores,g=h.offsets,y=h.displacementFwd,x=h.displacementBwd;return l.dispose(),{partSegmentation:m,heatmapScores:v,offsets:g,displacementFwd:y,displacementBwd:x,padding:d,internalResolutionHeightAndWidth:u}},t.prototype.segmentPersonParts=function(t,e){return void 0===e&&(e=ct),u(this,void 0,void 0,(function(){var n,r,a,o,i,u,l,p,f,d,h,m,v,g,y,x,b,w;return c(this,(function(c){switch(c.label){case 0:return pt(e=s({},ct,e)),n=this.segmentPersonPartsActivation(t,e.internalResolution,e.segmentationThreshold),r=n.partSegmentation,a=n.heatmapScores,o=n.offsets,i=n.displacementFwd,u=n.displacementBwd,l=n.padding,p=n.internalResolutionHeightAndWidth,f=r.shape,d=f[0],h=f[1],[4,r.data()];case 1:return m=c.sent(),r.dispose(),[4,nt([a,o,i,u])];case 2:return v=c.sent(),g=v[0],y=v[1],x=v[2],b=v[3],w=rt(w=j(g,y,x,b,this.baseModel.outputStride,e.maxDetections,e.scoreThreshold,e.nmsRadius),[d,h],p,l,!1),a.dispose(),o.dispose(),i.dispose(),u.dispose(),[2,{height:d,width:h,data:m,allPoses:w}]}}))}))},t.prototype.segmentMultiPersonParts=function(t,e){return void 0===e&&(e=lt),u(this,void 0,void 0,(function(){var n,a,o,i,u,l,f,h,m,v,g,y,x,b,w,C,E,S,N,I,R,T,k=this;return c(this,(function(c){switch(c.label){case 0:return ft(e=s({},lt,e)),n=Y(t),a=n[0],o=n[1],i=Z(e.internalResolution,this.baseModel.outputStride,[a,o]),u=et(t,i),l=u.resized,f=u.padding,h=Object(r.tidy)((function(){var t=k.predictForMultiPersonInstanceSegmentationAndPart(l),n=t.segmentLogits,r=t.longOffsets,s=t.heatmapScores,u=t.offsets,c=t.displacementFwd,h=t.displacementBwd,m=t.partHeatmaps,v=tt(n,[a,o],i,[[f.top,f.bottom],[f.left,f.right]],!0),g=tt(m,[a,o],i,[[f.top,f.bottom],[f.left,f.right]],!0),y=r;return{segmentation:p(v.squeeze(),e.segmentationThreshold),longOffsets:y,heatmapScoresRaw:s,offsetsRaw:u,displacementFwdRaw:c,displacementBwdRaw:h,partSegmentation:d(g)}})),m=h.segmentation,v=h.longOffsets,g=h.heatmapScoresRaw,y=h.offsetsRaw,x=h.displacementFwdRaw,b=h.displacementBwdRaw,w=h.partSegmentation,[4,nt([g,y,x,b])];case 1:return C=c.sent(),E=C[0],S=C[1],N=C[2],I=C[3],R=rt(R=j(E,S,N,I,this.baseModel.outputStride,e.maxDetections,e.scoreThreshold,e.nmsRadius),[a,o],i,f,!1),[4,O(m,v,w,R,a,o,this.baseModel.outputStride,i,f,e.scoreThreshold,e.refineSteps,e.minKeypointScore,e.maxDetections)];case 2:return T=c.sent(),l.dispose(),m.dispose(),v.dispose(),g.dispose(),y.dispose(),x.dispose(),b.dispose(),w.dispose(),[2,T]}}))}))},t.prototype.dispose=function(){this.baseModel.dispose()},t}();function ht(t){return u(this,void 0,void 0,(function(){var e,n,o,i,s,u;return c(this,(function(c){switch(c.label){case 0:if(e=t.outputStride,n=t.quantBytes,o=t.multiplier,null==r)throw new Error("Cannot find TensorFlow.js. If you are using a <script> tag, please also include @tensorflow/tfjs on the page before using this\n        model.");return i=function(t,e,n){var r={1:"100",.75:"075",.5:"050"},a="model-stride"+t+".json";return 4===n?X+"float/"+r[e]+"/"+a:X+"quant"+n+"/"+r[e]+"/"+a}(e,o,n),[4,Object(a.a)(t.modelUrl||i)];case 1:return s=c.sent(),u=new m(s,e),[2,new dt(u)]}}))}))}function mt(t){return u(this,void 0,void 0,(function(){var e,n,o,i,s;return c(this,(function(u){switch(u.label){case 0:if(e=t.outputStride,n=t.quantBytes,null==r)throw new Error("Cannot find TensorFlow.js. If you are using a <script> tag, please also include @tensorflow/tfjs on the page before using this\n        model.");return o=function(t,e){var n="model-stride"+t+".json";return 4===e?K+"float/"+n:K+"quant"+e+"/"+n}(e,n),[4,Object(a.a)(t.modelUrl||o)];case 1:return i=u.sent(),s=new q(i,e),[2,new dt(s)]}}))}))}function vt(t){return void 0===t&&(t=at),u(this,void 0,void 0,(function(){return c(this,(function(e){return"ResNet50"===(t=function(t){if(null==(t=t||at).architecture&&(t.architecture="MobileNetV1"),ot.indexOf(t.architecture)<0)throw new Error("Invalid architecture "+t.architecture+". Should be one of "+ot);if(null==t.outputStride&&(t.outputStride=16),it[t.architecture].indexOf(t.outputStride)<0)throw new Error("Invalid outputStride "+t.outputStride+". Should be one of "+it[t.architecture]+" for architecture "+t.architecture+".");if(null==t.multiplier&&(t.multiplier=1),st[t.architecture].indexOf(t.multiplier)<0)throw new Error("Invalid multiplier "+t.multiplier+". Should be one of "+st[t.architecture]+" for architecture "+t.architecture+".");if(null==t.quantBytes&&(t.quantBytes=4),ut.indexOf(t.quantBytes)<0)throw new Error("Invalid quantBytes "+t.quantBytes+". Should be one of "+ut+" for architecture "+t.architecture+".");return t}(t)).architecture?[2,mt(t)]:"MobileNetV1"===t.architecture?[2,ht(t)]:[2,null]}))}))}var gt=[512,512,456,512,328,456,335,512,405,328,271,456,388,335,292,512,454,405,364,328,298,271,496,456,420,388,360,335,312,292,273,512,482,454,428,405,383,364,345,328,312,298,284,271,259,496,475,456,437,420,404,388,374,360,347,335,323,312,302,292,282,273,265,512,497,482,468,454,441,428,417,405,394,383,373,364,354,345,337,328,320,312,305,298,291,284,278,271,265,259,507,496,485,475,465,456,446,437,428,420,412,404,396,388,381,374,367,360,354,347,341,335,329,323,318,312,307,302,297,292,287,282,278,273,269,265,261,512,505,497,489,482,475,468,461,454,447,441,435,428,422,417,411,405,399,394,389,383,378,373,368,364,359,354,350,345,341,337,332,328,324,320,316,312,309,305,301,298,294,291,287,284,281,278,274,271,268,265,262,259,257,507,501,496,491,485,480,475,470,465,460,456,451,446,442,437,433,428,424,420,416,412,408,404,400,396,392,388,385,381,377,374,370,367,363,360,357,354,350,347,344,341,338,335,332,329,326,323,320,318,315,312,310,307,304,302,299,297,294,292,289,287,285,282,280,278,275,273,271,269,267,265,263,261,259],yt=[9,11,12,13,13,14,14,15,15,15,15,16,16,16,16,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,18,19,19,19,19,19,19,19,19,19,19,19,19,19,19,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,20,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,21,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,22,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24,24];function xt(t,e,n,r,a,o){var i,s,u,c,l,p,f,d,h,m,v,g,y,x,b,w,C,E,S,N,I,R=t.data,T=2*o+1,k=r-1,A=a-1,O=o+1,D=O*(O+1)/2,_=new bt,F=_;for(u=1;u<T;u++)F=F.next=new bt,u===O&&(I=F);F.next=_;var M=null,B=null;f=p=0;var P=gt[o],L=yt[o];for(s=0;s<a;s++){for(x=b=w=d=h=m=0,v=O*(C=R[p]),g=O*(E=R[p+1]),y=O*(S=R[p+2]),d+=D*C,h+=D*E,m+=D*S,F=_,u=0;u<O;u++)F.r=C,F.g=E,F.b=S,F=F.next;for(u=1;u<O;u++)c=p+((k<u?k:u)<<2),d+=(F.r=C=R[c])*(N=O-u),h+=(F.g=E=R[c+1])*N,m+=(F.b=S=R[c+2])*N,x+=C,b+=E,w+=S,F=F.next;for(M=_,B=I,i=0;i<r;i++)R[p]=d*P>>L,R[p+1]=h*P>>L,R[p+2]=m*P>>L,d-=v,h-=g,m-=y,v-=M.r,g-=M.g,y-=M.b,c=f+((c=i+o+1)<k?c:k)<<2,d+=x+=M.r=R[c],h+=b+=M.g=R[c+1],m+=w+=M.b=R[c+2],M=M.next,v+=C=B.r,g+=E=B.g,y+=S=B.b,x-=C,b-=E,w-=S,B=B.next,p+=4;f+=r}for(i=0;i<r;i++){for(b=w=x=h=m=d=0,v=O*(C=R[p=i<<2]),g=O*(E=R[p+1]),y=O*(S=R[p+2]),d+=D*C,h+=D*E,m+=D*S,F=_,u=0;u<O;u++)F.r=C,F.g=E,F.b=S,F=F.next;for(l=r,u=1;u<=o;u++)p=l+i<<2,d+=(F.r=C=R[p])*(N=O-u),h+=(F.g=E=R[p+1])*N,m+=(F.b=S=R[p+2])*N,x+=C,b+=E,w+=S,F=F.next,u<A&&(l+=r);for(p=i,M=_,B=I,s=0;s<a;s++)R[c=p<<2]=d*P>>L,R[c+1]=h*P>>L,R[c+2]=m*P>>L,d-=v,h-=g,m-=y,v-=M.r,g-=M.g,y-=M.b,c=i+((c=s+O)<A?c:A)*r<<2,d+=x+=M.r=R[c],h+=b+=M.g=R[c+1],m+=w+=M.b=R[c+2],M=M.next,v+=C=B.r,g+=E=B.g,y+=S=B.b,x-=C,b-=E,w-=S,B=B.next,p+=r}return t}var bt=function t(){!function(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}(this,t),this.r=0,this.g=0,this.b=0,this.a=0,this.next=null};const wt=URL.createObjectURL(new Blob(["\n    var timer;\n\n    onmessage = function(request) {\n        switch (request.data.id) {\n        case 1: {\n            timer = setTimeout(() => {\n                postMessage({ id: 3 });\n            }, request.data.timeMs);\n            break;\n        }\n        case 2: {\n            if (timer) {\n                clearTimeout(timer);\n            }\n            break;\n        }\n        }\n    };\n"],{type:"application/javascript"}));class Ct{constructor(t){this._bpModel=t,this._onMaskFrameTimer=this._onMaskFrameTimer.bind(this),this._outputCanvasElement=document.createElement("canvas"),this._outputCanvasElement.getContext("2d"),this._inputVideoElement=document.createElement("video"),this._inputVideoCanvasElement=document.createElement("canvas")}async _onMaskFrameTimer(t){3===t.data.id&&await this._renderMask()}async _renderMask(){this._maskInProgress||(this._maskInProgress=!0,this._bpModel.segmentPerson(this._inputVideoElement,{internalResolution:"low",maxDetections:1,segmentationThreshold:.7,flipHorizontal:!1,scoreThreshold:.2}).then(t=>{this._segmentationData=t,this._maskInProgress=!1}));const t=this._inputVideoCanvasElement.getContext("2d");t.drawImage(this._inputVideoElement,0,0);const e=t.getImageData(0,0,this._inputVideoCanvasElement.width,this._inputVideoCanvasElement.height);if(this._segmentationData){const t=new ImageData(e.data.slice(),e.width,e.height);xt(t,0,0,e.width,e.height,12);for(let n=0;n<this._outputCanvasElement.width;n++)for(let r=0;r<this._outputCanvasElement.height;r++){const a=r*this._outputCanvasElement.width+n;0===this._segmentationData.data[a]&&(e.data[4*a]=t.data[4*a],e.data[4*a+1]=t.data[4*a+1],e.data[4*a+2]=t.data[4*a+2],e.data[4*a+3]=t.data[4*a+3])}}this._outputCanvasElement.getContext("2d").putImageData(e,0,0),this._maskFrameTimerWorker.postMessage({id:1,timeMs:1e3/30})}isEnabled(t){return t.isVideoTrack()&&"camera"===t.videoType}startEffect(t){this._maskFrameTimerWorker=new Worker(wt,{name:"Blur effect worker"}),this._maskFrameTimerWorker.onmessage=this._onMaskFrameTimer;const e=t.getVideoTracks()[0],{height:n,frameRate:r,width:a}=e.getSettings?e.getSettings():e.getConstraints();return this._outputCanvasElement.width=parseInt(a,10),this._outputCanvasElement.height=parseInt(n,10),this._inputVideoCanvasElement.width=parseInt(a,10),this._inputVideoCanvasElement.height=parseInt(n,10),this._inputVideoElement.width=parseInt(a,10),this._inputVideoElement.height=parseInt(n,10),this._inputVideoElement.autoplay=!0,this._inputVideoElement.srcObject=t,this._inputVideoElement.onloadeddata=()=>{this._maskFrameTimerWorker.postMessage({id:1,timeMs:1e3/30})},this._outputCanvasElement.captureStream(parseInt(r,10))}stopEffect(){this._maskFrameTimerWorker.postMessage({id:2}),this._maskFrameTimerWorker.terminate()}}async function Et(){if(!MediaStreamTrack.prototype.getSettings&&!MediaStreamTrack.prototype.getConstraints)throw new Error("JitsiStreamBlurEffect not supported!");const t=await vt({architecture:"MobileNetV1",outputStride:16,multiplier:.5,quantBytes:2});return new Ct(t)}}]);
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