FboCache.cpp revision 48a8f431fa52ae2ee25ffba9d20676f03bb710ff
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#include <stdlib.h> 18 19#include "Debug.h" 20#include "FboCache.h" 21#include "Properties.h" 22 23namespace android { 24namespace uirenderer { 25 26/////////////////////////////////////////////////////////////////////////////// 27// Constructors/destructor 28/////////////////////////////////////////////////////////////////////////////// 29 30FboCache::FboCache() 31 : mMaxSize(Properties::fboCacheSize) {} 32 33FboCache::~FboCache() { 34 clear(); 35} 36 37/////////////////////////////////////////////////////////////////////////////// 38// Size management 39/////////////////////////////////////////////////////////////////////////////// 40 41uint32_t FboCache::getSize() { 42 return mCache.size(); 43} 44 45uint32_t FboCache::getMaxSize() { 46 return mMaxSize; 47} 48 49/////////////////////////////////////////////////////////////////////////////// 50// Caching 51/////////////////////////////////////////////////////////////////////////////// 52 53void FboCache::clear() { 54 for (size_t i = 0; i < mCache.size(); i++) { 55 const GLuint fbo = mCache.itemAt(i); 56 glDeleteFramebuffers(1, &fbo); 57 } 58 mCache.clear(); 59} 60 61GLuint FboCache::get() { 62 GLuint fbo; 63 if (mCache.size() > 0) { 64 fbo = mCache.itemAt(mCache.size() - 1); 65 mCache.removeAt(mCache.size() - 1); 66 } else { 67 glGenFramebuffers(1, &fbo); 68 } 69 return fbo; 70} 71 72bool FboCache::put(GLuint fbo) { 73 if (mCache.size() < mMaxSize) { 74 mCache.add(fbo); 75 return true; 76 } 77 78 glDeleteFramebuffers(1, &fbo); 79 return false; 80} 81 82}; // namespace uirenderer 83}; // namespace android 84