1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 5 * in compliance with the License. You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software distributed under the License 10 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 11 * or implied. See the License for the specific language governing permissions and limitations under 12 * the License. 13 */ 14 #ifndef GLUTILS_H 15 #define GLUTILS_H 16 17 #include <jni.h> 18 19 #include <EGL/egl.h> 20 #include <GLES2/gl2.h> 21 #include <GLES2/gl2ext.h> 22 23 #include "Mesh.h" 24 25 class GLUtils { 26 public: 27 static void setEnvAndAssetManager(JNIEnv* env, jobject assetManager); 28 // Loads a file from assets/path into a char array. 29 static char* openTextFile(const char* path); 30 // Loads a texture from assets/texture/<name> 31 static GLuint loadTexture(const char* name); 32 // Loads a mesh from assets/mesh/<name> 33 static Mesh* loadMesh(const char* name); 34 // Creates a program with the given vertex and fragment shader source code. 35 static GLuint createProgram(const char** vertexSource, const char** fragmentSource); 36 static double currentTimeMillis(); 37 // Rounds a number up to the smallest power of 2 that is greater than the original number. 38 static int roundUpToSmallestPowerOf2(int x); 39 static const int RANDOM_FILL = -1; 40 // Generates a texture of the given dimensions. The texture can either be filled with the 41 // specified fill color, else if RANDOM_FILL is passed in the texture will be filled with 42 // random values. 43 static GLuint genTexture(int texWidth, int texHeight, int fill); 44 static bool createFBO(GLuint& fboId, GLuint& rboId, GLuint& cboId, int width, int height); 45 }; 46 47 #endif 48
