"use strict";
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/**
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* @license
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* Copyright 2018 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 shader_compiler_1 = require("./shader_compiler");
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var ScatterProgram = /** @class */ (function () {
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function ScatterProgram(updateSize, sliceDim, indicesRank, updatesRank, strides, shape, summingDupeIndex) {
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if (summingDupeIndex === void 0) { summingDupeIndex = true; }
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this.variableNames = ['updates', 'indices', 'defaultValue'];
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this.outputShape = shape;
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var stridesType = shader_compiler_1.getCoordsDataType(strides.length);
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var dtype = shader_compiler_1.getCoordsDataType(shape.length);
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var indicesString = '';
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if (indicesRank === 1) {
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indicesString = 'i';
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}
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else if (indicesRank === 2) {
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indicesString = 'i, j';
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}
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var indicesSnippet = "getIndices(" + indicesString + ")";
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var updatesString = '';
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if (updatesRank === 1) {
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updatesString = 'i';
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}
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else if (updatesRank === 2) {
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updatesString = 'i, coords[1]';
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}
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var updatesSnippet = "getUpdates(" + updatesString + ")";
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var strideString = sliceDim > 1 ? 'strides[j]' : 'strides';
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this.userCode = "\n " + stridesType + " strides = " + stridesType + "(" + strides + ");\n\n void main() {\n " + dtype + " coords = getOutputCoords();\n float sum = 0.0;\n bool found = false;\n for (int i = 0; i < " + updateSize + "; i++) {\n int flattenedIndex = 0;\n for (int j = 0; j < " + sliceDim + "; j++) {\n int index = round(" + indicesSnippet + ");\n flattenedIndex += index * " + strideString + ";\n }\n if (flattenedIndex == coords[0]) {\n sum += " + updatesSnippet + ";\n found = true;\n }\n }\n setOutput(mix(getDefaultValue(), sum, float(found)));\n }\n ";
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}
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return ScatterProgram;
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}());
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exports.ScatterProgram = ScatterProgram;
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//# sourceMappingURL=scatter_gpu.js.map
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