"use strict";
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/**
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* @license
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* Copyright 2019 Google LLC. 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 glsl_version_1 = require("./glsl_version");
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var Im2ColPackedProgram = /** @class */ (function () {
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function Im2ColPackedProgram(outputShape, inputShape, convInfo) {
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this.variableNames = ['A'];
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this.packedInputs = true;
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this.packedOutput = true;
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this.outputShape = outputShape;
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var filterWidth = convInfo.filterWidth, inChannels = convInfo.inChannels, strideWidth = convInfo.strideWidth, strideHeight = convInfo.strideHeight, padInfo = convInfo.padInfo, outWidth = convInfo.outWidth, dilationWidth = convInfo.dilationWidth, dilationHeight = convInfo.dilationHeight, dataFormat = convInfo.dataFormat;
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var left = padInfo.left, top = padInfo.top;
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var itemsPerBlockRow = inChannels * filterWidth;
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var glsl = glsl_version_1.getGlslDifferences();
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var isChannelsLast = dataFormat === 'channelsLast';
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var rowDim = isChannelsLast ? 0 : 1;
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var colDim = isChannelsLast ? 1 : 2;
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var unrolled = "";
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for (var row = 0; row <= 1; row++) {
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for (var col = 0; col <= 1; col++) {
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unrolled += "\n blockIndex = rc.y + " + col + ";\n pos = rc.x + " + row + ";\n\n if(blockIndex < " + outputShape[1] + " && pos < " + outputShape[0] + ") {\n offsetY = int(blockIndex / (" + outWidth + ")) * " + strideHeight + " - " + top + ";\n d0 = offsetY + " + dilationHeight + " * (pos / " + itemsPerBlockRow + ");\n\n if(d0 < " + inputShape[rowDim] + " && d0 >= 0) {\n\n offsetX = int(mod(float(blockIndex), " + outWidth + ".) * " + strideWidth + ". - " + left + ".);\n d1 = offsetX + " + dilationWidth + " * (int(mod(float(pos), " + itemsPerBlockRow + ".) / " + inChannels + ".));\n\n if(d1 < " + inputShape[colDim] + " && d1 >= 0) {\n\n ch = int(mod(float(pos), " + inChannels + ".));\n\n if (" + isChannelsLast + ") {\n innerDims = vec2(d1, ch);\n result[" + (row * 2 + col) + "] = getChannel(\n getA(d0, int(innerDims.x),\n int(innerDims.y)), innerDims);\n } else {\n innerDims = vec2(d0, d1);\n result[" + (row * 2 + col) + "] = getChannel(\n getA(ch, int(innerDims.x),\n int(innerDims.y)), innerDims);\n }\n }\n }\n }\n ";
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}
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}
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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 " + unrolled + "\n\n " + glsl.output + " = result;\n }\n ";
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}
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return Im2ColPackedProgram;
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}());
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exports.Im2ColPackedProgram = Im2ColPackedProgram;
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//# sourceMappingURL=im2col_packed_gpu.js.map
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