"use strict";
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/**
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* @license
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* Copyright 2018 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 packing_util_1 = require("../packing_util");
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var shader_compiler_1 = require("./shader_compiler");
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var PackProgram = /** @class */ (function () {
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function PackProgram(outputShape) {
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this.variableNames = ['A'];
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this.packedInputs = false;
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this.packedOutput = true;
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// Only input / output 3D tensors.
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this.outputShape = outputShape;
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var rank = outputShape.length;
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if (rank === 0) {
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this.userCode = "\n void main() {\n setOutput(vec4(getA(), 0., 0., 0.));\n }\n ";
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}
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else {
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var channels = packing_util_1.getChannels('rc', rank);
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var dtype = shader_compiler_1.getCoordsDataType(rank);
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var outOfBoundsCondition = getOutOfBoundsCondition(rank, outputShape, channels);
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var setup = getSetup(rank, outputShape[outputShape.length - 1], outputShape[outputShape.length - 2], channels);
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var output = getOutput(outputShape, channels);
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this.userCode = "\n void main() {\n " + dtype + " rc = getOutputCoords();\n\n if(" + outOfBoundsCondition + ") {\n setOutput(vec4(0));\n } else {\n " + setup + "\n\n setOutput(vec4(" + output + "));\n }\n }\n ";
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}
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}
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return PackProgram;
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}());
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exports.PackProgram = PackProgram;
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function getSourceCoordsArr(rank, dims) {
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var coords = [];
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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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var coord = (row === 0 ? 'r' : 'rp1') + ", " + (col === 0 ? 'c' : 'cp1');
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for (var d = 2; d < rank; d++) {
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coord = dims[dims.length - 1 - d] + "," + coord;
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}
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coords.push(coord);
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}
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}
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return coords;
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}
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function getOutOfBoundsCondition(rank, shape, dims) {
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if (rank === 1) {
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return "rc > " + shape[0];
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}
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var cond = '';
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for (var i = rank - 2; i < rank; i++) {
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cond += dims[i] + " >= " + shape[i];
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if (i < rank - 1) {
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cond += '||';
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}
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}
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return cond;
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}
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function getSetup(rank, cols, rows, dims) {
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if (rank === 1) {
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return '';
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}
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var innerDims = dims.slice(-2);
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return "\n int r = " + innerDims[0] + ";\n int c = " + innerDims[1] + ";\n int rp1 = r + 1;\n int cp1 = c + 1;\n\n bool cEdge = cp1 >= " + cols + ";\n bool rEdge = rp1 >= " + rows + ";\n ";
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}
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function getOutput(shape, dims) {
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var rank = shape.length;
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var sourceCoords = getSourceCoordsArr(rank, dims);
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if (rank === 1) {
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return "getA(rc),\n rc + 1 >= " + shape[0] + " ? 0. : getA(rc + 1),\n 0, 0";
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}
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return "getA(" + sourceCoords[0] + "),\n cEdge ? 0. : getA(" + sourceCoords[1] + "),\n rEdge ? 0. : getA(" + sourceCoords[2] + "),\n rEdge || cEdge ? 0. : getA(" + sourceCoords[3] + ")";
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}
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//# sourceMappingURL=pack_gpu.js.map
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