"use strict";
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/**
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* @license
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* Copyright 2017 Google Inc. All Rights Reserved.
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* =============================================================================
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*/
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Object.defineProperty(exports, "__esModule", { value: true });
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var MaxPool2DBackpropProgram = /** @class */ (function () {
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function MaxPool2DBackpropProgram(convInfo) {
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this.variableNames = ['dy', 'maxPos'];
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this.outputShape = convInfo.inShape;
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var strideHeight = convInfo.strideHeight;
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var strideWidth = convInfo.strideWidth;
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var dilationHeight = convInfo.dilationHeight;
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var effectiveFilterHeight = convInfo.effectiveFilterHeight;
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var effectiveFilterWidth = convInfo.effectiveFilterWidth;
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var padTop = effectiveFilterHeight - 1 - convInfo.padInfo.top;
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var padLeft = effectiveFilterWidth - 1 - convInfo.padInfo.left;
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var lastIndex = effectiveFilterHeight * effectiveFilterWidth - 1;
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this.userCode = "\n const ivec2 pads = ivec2(" + padTop + ", " + padLeft + ");\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 < " + effectiveFilterHeight + ";\n wR += " + dilationHeight + ") {\n float dyR = float(dyRCorner + wR) / " + strideHeight + ".0;\n\n if (dyR < 0.0 || dyR >= " + convInfo.outHeight + ".0 || fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n for (int wC = 0; wC < " + effectiveFilterWidth + "; wC++) {\n float dyC = float(dyCCorner + wC) / " + strideWidth + ".0;\n\n if (dyC < 0.0 || dyC >= " + convInfo.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 = " + lastIndex + " - 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 * " + effectiveFilterWidth + " + wC;\n float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);\n\n dotProd += dyValue * mask;\n }\n }\n setOutput(dotProd);\n }\n ";
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}
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return MaxPool2DBackpropProgram;
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}());
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exports.MaxPool2DBackpropProgram = MaxPool2DBackpropProgram;
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var MaxPool3DBackpropProgram = /** @class */ (function () {
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function MaxPool3DBackpropProgram(convInfo) {
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this.variableNames = ['dy', 'maxPos'];
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this.outputShape = convInfo.inShape;
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var strideDepth = convInfo.strideDepth;
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var strideHeight = convInfo.strideHeight;
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var strideWidth = convInfo.strideWidth;
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var dilationDepth = convInfo.dilationDepth;
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var dilationHeight = convInfo.dilationHeight;
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var dilationWidth = convInfo.dilationWidth;
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var effectiveFilterDepth = convInfo.effectiveFilterDepth;
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var effectiveFilterHeight = convInfo.effectiveFilterHeight;
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var effectiveFilterWidth = convInfo.effectiveFilterWidth;
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var padFront = effectiveFilterDepth - 1 - convInfo.padInfo.front;
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var padTop = effectiveFilterHeight - 1 - convInfo.padInfo.top;
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var padLeft = effectiveFilterWidth - 1 - convInfo.padInfo.left;
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var lastIndex = effectiveFilterDepth * effectiveFilterHeight * effectiveFilterWidth - 1;
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this.userCode = "\n const ivec3 pads = ivec3(" + padFront + ", " + padTop + ", " + padLeft + ");\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 < " + effectiveFilterDepth + ";\n wD += " + dilationDepth + ") {\n float dyD = float(dyDCorner + wD) / " + strideDepth + ".0;\n\n if (dyD < 0.0 || dyD >= " + convInfo.outDepth + ".0 || fract(dyD) > 0.0) {\n continue;\n }\n int idyD = int(dyD);\n\n for (int wR = 0; wR < " + effectiveFilterHeight + ";\n wR += " + dilationHeight + ") {\n float dyR = float(dyRCorner + wR) / " + strideHeight + ".0;\n\n if (dyR < 0.0 || dyR >= " + convInfo.outHeight + ".0 ||\n fract(dyR) > 0.0) {\n continue;\n }\n int idyR = int(dyR);\n\n for (int wC = 0; wC < " + effectiveFilterWidth + ";\n wC += " + dilationWidth + ") {\n float dyC = float(dyCCorner + wC) / " + strideWidth + ".0;\n\n if (dyC < 0.0 || dyC >= " + convInfo.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 = " + lastIndex + " -\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 * " + effectiveFilterHeight + " * " + effectiveFilterWidth + " +\n wR * " + effectiveFilterWidth + " + wC;\n float mask = float(maxPosValue == curPosValue ? 1.0 : 0.0);\n\n dotProd += dyValue * mask;\n }\n }\n }\n setOutput(dotProd);\n }\n ";
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}
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return MaxPool3DBackpropProgram;
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}());
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exports.MaxPool3DBackpropProgram = MaxPool3DBackpropProgram;
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