TextureCache.cpp revision ce0537b80087a6225273040a987414b1dd081aa0
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 <GLES2/gl2.h> 18 19#include "TextureCache.h" 20 21namespace android { 22namespace uirenderer { 23 24TextureCache::TextureCache(unsigned int maxEntries): mCache(maxEntries) { 25 mCache.setOnEntryRemovedListener(this); 26} 27 28TextureCache::~TextureCache() { 29 mCache.clear(); 30} 31 32void TextureCache::operator()(SkBitmap* key, Texture* value) { 33 LOGD("Entry removed"); 34 if (value) { 35 glDeleteTextures(1, &value->id); 36 delete value; 37 } 38} 39 40Texture* TextureCache::get(SkBitmap* bitmap) { 41 Texture* texture = mCache.get(bitmap); 42 if (!texture) { 43 texture = generateTexture(bitmap); 44 mCache.put(bitmap, texture); 45 } 46 return texture; 47} 48 49Texture* TextureCache::remove(SkBitmap* bitmap) { 50 return mCache.remove(bitmap); 51} 52 53void TextureCache::clear() { 54 mCache.clear(); 55} 56 57Texture* TextureCache::generateTexture(SkBitmap* bitmap) { 58 Texture* texture = new Texture; 59 60 texture->width = bitmap->width(); 61 texture->height = bitmap->height(); 62 63 glGenTextures(1, &texture->id); 64 glBindTexture(GL_TEXTURE_2D, texture->id); 65 66 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 67 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 68 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 69 glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 70 71 switch (bitmap->getConfig()) { 72 case SkBitmap::kRGB_565_Config: 73 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB565, texture->width, texture->height, 74 0, GL_RGB565, GL_UNSIGNED_SHORT_5_6_5, bitmap->getPixels()); 75 break; 76 case SkBitmap::kARGB_8888_Config: 77 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, texture->width, texture->height, 78 0, GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels()); 79 break; 80 } 81 82 return texture; 83} 84 85}; // namespace uirenderer 86}; // namespace android 87