@tensorflow/tfjs-core
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Hardware-accelerated JavaScript library for machine intelligence
40 lines • 3.18 kB
JavaScript
"use strict";
/**
* @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.
* =============================================================================
*/
Object.defineProperty(exports, "__esModule", { value: true });
var glsl_version_1 = require("./glsl_version");
var Im2ColPackedProgram = /** @class */ (function () {
function Im2ColPackedProgram(outputShape, inputShape, convInfo) {
this.variableNames = ['A'];
this.usesPackedTextures = true;
this.outputShape = outputShape;
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;
var left = padInfo.left, top = padInfo.top;
var itemsPerBlockRow = inChannels * filterWidth;
var glsl = glsl_version_1.getGlslDifferences();
var unrolled = "";
for (var row = 0; row <= 1; row++) {
for (var col = 0; col <= 1; col++) {
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[0] + " && d0 >= 0) {\n offsetX = int(mod(float(blockIndex), " + outWidth + ".) * " + strideWidth + ". - " + left + ".);\n d1 = offsetX + " + dilationWidth + " * (int(mod(float(pos), " + itemsPerBlockRow + ".) / " + inChannels + ".));\n \n if(d1 < " + inputShape[1] + " && d1 >= 0) {\n innerDims = vec2(d1, int(mod(float(pos), " + inChannels + ".)));\n result[" + (row * 2 + col) + "] = getChannel(getA(d0, 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;\n vec2 innerDims;\n\n " + unrolled + "\n\n " + glsl.output + " = result;\n }\n ";
}
return Im2ColPackedProgram;
}());
exports.Im2ColPackedProgram = Im2ColPackedProgram;
//# sourceMappingURL=im2col_packed_gpu.js.map