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 <utils/Mutex.h> 20 21#include "AssetAtlas.h" 22#include "Caches.h" 23#include "Texture.h" 24#include "TextureCache.h" 25#include "Properties.h" 26#include "utils/TraceUtils.h" 27 28namespace android { 29namespace uirenderer { 30 31/////////////////////////////////////////////////////////////////////////////// 32// Constructors/destructor 33/////////////////////////////////////////////////////////////////////////////// 34 35TextureCache::TextureCache() 36 : mCache(LruCache<uint32_t, Texture*>::kUnlimitedCapacity) 37 , mSize(0) 38 , mMaxSize(Properties::textureCacheSize) 39 , mFlushRate(Properties::textureCacheFlushRate) 40 , mAssetAtlas(nullptr) { 41 mCache.setOnEntryRemovedListener(this); 42 43 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize); 44 INIT_LOGD(" Maximum texture dimension is %d pixels", mMaxTextureSize); 45 46 mDebugEnabled = Properties::debugLevel & kDebugCaches; 47} 48 49TextureCache::~TextureCache() { 50 mCache.clear(); 51} 52 53/////////////////////////////////////////////////////////////////////////////// 54// Size management 55/////////////////////////////////////////////////////////////////////////////// 56 57uint32_t TextureCache::getSize() { 58 return mSize; 59} 60 61uint32_t TextureCache::getMaxSize() { 62 return mMaxSize; 63} 64 65/////////////////////////////////////////////////////////////////////////////// 66// Callbacks 67/////////////////////////////////////////////////////////////////////////////// 68 69void TextureCache::operator()(uint32_t&, Texture*& texture) { 70 // This will be called already locked 71 if (texture) { 72 mSize -= texture->bitmapSize; 73 TEXTURE_LOGD("TextureCache::callback: name, removed size, mSize = %d, %d, %d", 74 texture->id, texture->bitmapSize, mSize); 75 if (mDebugEnabled) { 76 ALOGD("Texture deleted, size = %d", texture->bitmapSize); 77 } 78 texture->deleteTexture(); 79 delete texture; 80 } 81} 82 83/////////////////////////////////////////////////////////////////////////////// 84// Caching 85/////////////////////////////////////////////////////////////////////////////// 86 87void TextureCache::setAssetAtlas(AssetAtlas* assetAtlas) { 88 mAssetAtlas = assetAtlas; 89} 90 91void TextureCache::resetMarkInUse(void* ownerToken) { 92 LruCache<uint32_t, Texture*>::Iterator iter(mCache); 93 while (iter.next()) { 94 if (iter.value()->isInUse == ownerToken) { 95 iter.value()->isInUse = nullptr; 96 } 97 } 98} 99 100bool TextureCache::canMakeTextureFromBitmap(const SkBitmap* bitmap) { 101 if (bitmap->width() > mMaxTextureSize || bitmap->height() > mMaxTextureSize) { 102 ALOGW("Bitmap too large to be uploaded into a texture (%dx%d, max=%dx%d)", 103 bitmap->width(), bitmap->height(), mMaxTextureSize, mMaxTextureSize); 104 return false; 105 } 106 return true; 107} 108 109// Returns a prepared Texture* that either is already in the cache or can fit 110// in the cache (and is thus added to the cache) 111Texture* TextureCache::getCachedTexture(const SkBitmap* bitmap, AtlasUsageType atlasUsageType) { 112 if (CC_LIKELY(mAssetAtlas != nullptr) && atlasUsageType == AtlasUsageType::Use) { 113 AssetAtlas::Entry* entry = mAssetAtlas->getEntry(bitmap->pixelRef()); 114 if (CC_UNLIKELY(entry)) { 115 return entry->texture; 116 } 117 } 118 119 Texture* texture = mCache.get(bitmap->pixelRef()->getStableID()); 120 121 if (!texture) { 122 if (!canMakeTextureFromBitmap(bitmap)) { 123 return nullptr; 124 } 125 126 const uint32_t size = bitmap->rowBytes() * bitmap->height(); 127 bool canCache = size < mMaxSize; 128 // Don't even try to cache a bitmap that's bigger than the cache 129 while (canCache && mSize + size > mMaxSize) { 130 Texture* oldest = mCache.peekOldestValue(); 131 if (oldest && !oldest->isInUse) { 132 mCache.removeOldest(); 133 } else { 134 canCache = false; 135 } 136 } 137 138 if (canCache) { 139 texture = new Texture(Caches::getInstance()); 140 texture->bitmapSize = size; 141 texture->generation = bitmap->getGenerationID(); 142 texture->upload(*bitmap); 143 144 mSize += size; 145 TEXTURE_LOGD("TextureCache::get: create texture(%p): name, size, mSize = %d, %d, %d", 146 bitmap, texture->id, size, mSize); 147 if (mDebugEnabled) { 148 ALOGD("Texture created, size = %d", size); 149 } 150 mCache.put(bitmap->pixelRef()->getStableID(), texture); 151 } 152 } else if (!texture->isInUse && bitmap->getGenerationID() != texture->generation) { 153 // Texture was in the cache but is dirty, re-upload 154 // TODO: Re-adjust the cache size if the bitmap's dimensions have changed 155 texture->upload(*bitmap); 156 texture->generation = bitmap->getGenerationID(); 157 } 158 159 return texture; 160} 161 162bool TextureCache::prefetchAndMarkInUse(void* ownerToken, const SkBitmap* bitmap) { 163 Texture* texture = getCachedTexture(bitmap, AtlasUsageType::Use); 164 if (texture) { 165 texture->isInUse = ownerToken; 166 } 167 return texture; 168} 169 170Texture* TextureCache::get(const SkBitmap* bitmap, AtlasUsageType atlasUsageType) { 171 Texture* texture = getCachedTexture(bitmap, atlasUsageType); 172 173 if (!texture) { 174 if (!canMakeTextureFromBitmap(bitmap)) { 175 return nullptr; 176 } 177 178 const uint32_t size = bitmap->rowBytes() * bitmap->height(); 179 texture = new Texture(Caches::getInstance()); 180 texture->bitmapSize = size; 181 texture->upload(*bitmap); 182 texture->generation = bitmap->getGenerationID(); 183 texture->cleanup = true; 184 } 185 186 return texture; 187} 188 189void TextureCache::releaseTexture(uint32_t pixelRefStableID) { 190 Mutex::Autolock _l(mLock); 191 mGarbage.push_back(pixelRefStableID); 192} 193 194void TextureCache::clearGarbage() { 195 Mutex::Autolock _l(mLock); 196 size_t count = mGarbage.size(); 197 for (size_t i = 0; i < count; i++) { 198 uint32_t pixelRefId = mGarbage[i]; 199 mCache.remove(pixelRefId); 200 } 201 mGarbage.clear(); 202} 203 204void TextureCache::clear() { 205 mCache.clear(); 206 TEXTURE_LOGD("TextureCache:clear(), mSize = %d", mSize); 207} 208 209void TextureCache::flush() { 210 if (mFlushRate >= 1.0f || mCache.size() == 0) return; 211 if (mFlushRate <= 0.0f) { 212 clear(); 213 return; 214 } 215 216 uint32_t targetSize = uint32_t(mSize * mFlushRate); 217 TEXTURE_LOGD("TextureCache::flush: target size: %d", targetSize); 218 219 while (mSize > targetSize) { 220 mCache.removeOldest(); 221 } 222} 223 224}; // namespace uirenderer 225}; // namespace android 226