1 /* 2 * Copyright (C) 2010 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 #define LOG_TAG "OpenGLRenderer" 18 19 #include <stdlib.h> 20 21 #include "Debug.h" 22 #include "FboCache.h" 23 #include "Properties.h" 24 25 namespace android { 26 namespace uirenderer { 27 28 /////////////////////////////////////////////////////////////////////////////// 29 // Constructors/destructor 30 /////////////////////////////////////////////////////////////////////////////// 31 32 FboCache::FboCache(): mMaxSize(DEFAULT_FBO_CACHE_SIZE) { 33 char property[PROPERTY_VALUE_MAX]; 34 if (property_get(PROPERTY_FBO_CACHE_SIZE, property, NULL) > 0) { 35 INIT_LOGD(" Setting fbo cache size to %s", property); 36 mMaxSize = atoi(property); 37 } else { 38 INIT_LOGD(" Using default fbo cache size of %d", DEFAULT_FBO_CACHE_SIZE); 39 } 40 } 41 42 FboCache::~FboCache() { 43 clear(); 44 } 45 46 /////////////////////////////////////////////////////////////////////////////// 47 // Size management 48 /////////////////////////////////////////////////////////////////////////////// 49 50 uint32_t FboCache::getSize() { 51 return mCache.size(); 52 } 53 54 uint32_t FboCache::getMaxSize() { 55 return mMaxSize; 56 } 57 58 /////////////////////////////////////////////////////////////////////////////// 59 // Caching 60 /////////////////////////////////////////////////////////////////////////////// 61 62 void FboCache::clear() { 63 for (size_t i = 0; i < mCache.size(); i++) { 64 const GLuint fbo = mCache.itemAt(i); 65 glDeleteFramebuffers(1, &fbo); 66 } 67 mCache.clear(); 68 } 69 70 GLuint FboCache::get() { 71 GLuint fbo; 72 if (mCache.size() > 0) { 73 fbo = mCache.itemAt(mCache.size() - 1); 74 mCache.removeAt(mCache.size() - 1); 75 } else { 76 glGenFramebuffers(1, &fbo); 77 } 78 return fbo; 79 } 80 81 bool FboCache::put(GLuint fbo) { 82 if (mCache.size() < mMaxSize) { 83 mCache.add(fbo); 84 return true; 85 } 86 87 glDeleteFramebuffers(1, &fbo); 88 return false; 89 } 90 91 }; // namespace uirenderer 92 }; // namespace android 93
