1 /* 2 * Copyright (C) 2016 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SHADERTOY_SHADER_H 18 #define SHADERTOY_SHADER_H 19 20 #include <GLES3/gl31.h> 21 22 #include <fstream> 23 #include <sstream> 24 25 struct InputTextures { 26 GLuint id; 27 GLint uniform_location; 28 int width; 29 int height; 30 }; 31 32 class ShadertoyShader { 33 public: 34 ShadertoyShader(); 35 ~ShadertoyShader(); 36 37 void CreateShaderFromString(const std::string& shader_string); 38 void PrepareForDraw(int width, int height, float global_time, int frame, float time_delta); 39 40 private: 41 void CreateShader(const std::string fragment_string); 42 void GetUniformLocations(); 43 44 GLint uiResolution_; 45 GLint uiGlobalTime_; 46 GLint uiFrame_; 47 GLint uiTimeDelta_; 48 GLint uiChannel0_; 49 GLint unViewport_; 50 GLint unCorners_; 51 52 GLuint shader_program_; 53 54 struct InputTextures input_textures_[4]; 55 }; 56 57 58 59 #endif // SHADERTOY_SHADER_H 60