"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 glsl_version_1 = require("./glsl_version");
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var shader_util = require("./shader_compiler_util");
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var EncodeMatrixProgram = /** @class */ (function () {
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function EncodeMatrixProgram(outputShape, texShape, inputIsUnsignedByte) {
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if (inputIsUnsignedByte === void 0) { inputIsUnsignedByte = false; }
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this.variableNames = ['A'];
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var glsl = glsl_version_1.getGlslDifferences();
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var height = texShape[0], width = texShape[1];
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this.outputShape = outputShape;
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var output = "result";
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if (inputIsUnsignedByte) {
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output = "floor(result * 255. + 0.5)";
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}
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this.userCode = "\n " + shader_util.getFlatIndexFrom3D(outputShape) + "\n\n void main() {\n ivec3 coords = getOutputCoords();\n\n int flatIndex = getFlatIndex(coords);\n int offset = imod(flatIndex, 4);\n\n flatIndex = idiv(flatIndex, 4, 1.);\n \n int r = flatIndex / " + width + ";\n int c = imod(flatIndex, " + width + ");\n vec2 uv = (vec2(c, r) + halfCR) / vec2(" + width + ".0, " + height + ".0);\n vec4 values = " + glsl.texture2D + "(A, uv);\n\n float result;\n\n if(offset == 0) {\n result = values[0];\n } else if(offset == 1) {\n result = values[1];\n } else if(offset == 2) {\n result = values[2];\n } else {\n result = values[3];\n }\n\n " + glsl.output + " = vec4(" + output + ", 0., 0., 0.);\n }\n ";
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}
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return EncodeMatrixProgram;
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}());
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exports.EncodeMatrixProgram = EncodeMatrixProgram;
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//# sourceMappingURL=encode_matrix_gpu.js.map
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