Jarkko Poyry | 3c82736 | 2014-09-02 11:48:52 +0300 | [diff] [blame] | 1 | /*------------------------------------------------------------------------- |
| 2 | * drawElements Quality Program Random Shader Generator |
| 3 | * ---------------------------------------------------- |
| 4 | * |
| 5 | * Copyright 2014 The Android Open Source Project |
| 6 | * |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 8 | * you may not use this file except in compliance with the License. |
| 9 | * You may obtain a copy of the License at |
| 10 | * |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 12 | * |
| 13 | * Unless required by applicable law or agreed to in writing, software |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 16 | * See the License for the specific language governing permissions and |
| 17 | * limitations under the License. |
| 18 | * |
| 19 | *//*! |
| 20 | * \file |
| 21 | * \brief Program generator. |
| 22 | *//*--------------------------------------------------------------------*/ |
| 23 | |
| 24 | #include "rsgProgramGenerator.hpp" |
| 25 | #include "rsgShaderGenerator.hpp" |
| 26 | #include "rsgGeneratorState.hpp" |
| 27 | |
| 28 | using std::vector; |
| 29 | |
| 30 | namespace rsg |
| 31 | { |
| 32 | |
| 33 | ProgramGenerator::ProgramGenerator (void) |
| 34 | { |
| 35 | } |
| 36 | |
| 37 | ProgramGenerator::~ProgramGenerator (void) |
| 38 | { |
| 39 | } |
| 40 | |
| 41 | void ProgramGenerator::generate ( |
| 42 | const ProgramParameters& programParams, |
| 43 | Shader& vertexShader, |
| 44 | Shader& fragmentShader) |
| 45 | { |
| 46 | // Random number generator |
| 47 | de::Random rnd(programParams.seed); |
| 48 | |
| 49 | GeneratorState state(programParams, rnd); |
| 50 | |
| 51 | // Fragment shader |
| 52 | { |
| 53 | ShaderGenerator shaderGen(state); |
| 54 | vector<ShaderInput*> emptyOutputs; // \note [pyry] gl_FragColor is added in ShaderGenerator |
| 55 | shaderGen.generate(programParams.fragmentParameters, fragmentShader, emptyOutputs); |
| 56 | } |
| 57 | |
| 58 | // Vertex shader |
| 59 | { |
| 60 | ShaderGenerator shaderGen(state); |
| 61 | |
| 62 | // Initialize outputs from fragment shader inputs |
| 63 | const vector<ShaderInput*>& fragmentInputs = fragmentShader.getInputs(); // \note gl_Position and dEQP_Position are handled in ShaderGenerator |
| 64 | |
| 65 | shaderGen.generate(programParams.vertexParameters, vertexShader, fragmentInputs); |
| 66 | } |
| 67 | |
| 68 | // Allocate samplers \todo [pyry] Randomize allocation. |
| 69 | { |
| 70 | const vector<ShaderInput*>& vertexUniforms = vertexShader.getUniforms(); |
| 71 | const vector<ShaderInput*>& fragmentUniforms = fragmentShader.getUniforms(); |
| 72 | vector<ShaderInput*> unifiedSamplers; |
| 73 | int curSamplerNdx = 0; |
| 74 | |
| 75 | // Build unified sampler list. |
| 76 | for (vector<ShaderInput*>::const_iterator i = vertexUniforms.begin(); i != vertexUniforms.end(); i++) |
| 77 | { |
| 78 | if ((*i)->getVariable()->getType().isSampler()) |
| 79 | unifiedSamplers.push_back(*i); |
| 80 | } |
| 81 | |
| 82 | for (vector<ShaderInput*>::const_iterator i = fragmentUniforms.begin(); i != fragmentUniforms.end(); i++) |
| 83 | { |
| 84 | if ((*i)->getVariable()->getType().isSampler()) |
| 85 | unifiedSamplers.push_back(*i); |
| 86 | } |
| 87 | |
| 88 | // Assign sampler indices. |
| 89 | for (vector<ShaderInput*>::const_iterator i = unifiedSamplers.begin(); i != unifiedSamplers.end(); i++) |
| 90 | { |
| 91 | ShaderInput* input = *i; |
| 92 | if (input->getVariable()->getType().isSampler()) |
| 93 | { |
| 94 | input->getValueRange().getMin() = curSamplerNdx; |
| 95 | input->getValueRange().getMax() = curSamplerNdx; |
| 96 | curSamplerNdx += 1; |
| 97 | } |
| 98 | } |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | } // rsg |