| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #define LOG_TAG "OpenGLRenderer" |
| |
| #include <GLES2/gl2.h> |
| |
| #include <utils/Log.h> |
| |
| #include "LayerCache.h" |
| #include "Properties.h" |
| |
| namespace android { |
| namespace uirenderer { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Constructors/destructor |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| LayerCache::LayerCache(): mSize(0), mMaxSize(MB(DEFAULT_LAYER_CACHE_SIZE)) { |
| char property[PROPERTY_VALUE_MAX]; |
| if (property_get(PROPERTY_LAYER_CACHE_SIZE, property, NULL) > 0) { |
| LOGD(" Setting layer cache size to %sMB", property); |
| setMaxSize(MB(atof(property))); |
| } else { |
| LOGD(" Using default layer cache size of %.2fMB", DEFAULT_LAYER_CACHE_SIZE); |
| } |
| } |
| |
| LayerCache::~LayerCache() { |
| clear(); |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Size management |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| uint32_t LayerCache::getSize() { |
| return mSize; |
| } |
| |
| uint32_t LayerCache::getMaxSize() { |
| return mMaxSize; |
| } |
| |
| void LayerCache::setMaxSize(uint32_t maxSize) { |
| clear(); |
| mMaxSize = maxSize; |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| // Caching |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| void LayerCache::deleteLayer(Layer* layer) { |
| if (layer) { |
| mSize -= layer->width * layer->height * 4; |
| glDeleteTextures(1, &layer->texture); |
| delete layer; |
| } |
| } |
| |
| void LayerCache::clear() { |
| size_t count = mCache.size(); |
| for (size_t i = 0; i < count; i++) { |
| deleteLayer(mCache.itemAt(i).mLayer); |
| } |
| mCache.clear(); |
| } |
| |
| Layer* LayerCache::get(const uint32_t width, const uint32_t height) { |
| Layer* layer = NULL; |
| |
| LayerEntry entry(width, height); |
| ssize_t index = mCache.indexOf(entry); |
| |
| if (index >= 0) { |
| entry = mCache.itemAt(index); |
| mCache.removeAt(index); |
| |
| layer = entry.mLayer; |
| mSize -= layer->width * layer->height * 4; |
| |
| LAYER_LOGD("Reusing layer %dx%d", layer->width, layer->height); |
| } else { |
| LAYER_LOGD("Creating new layer %dx%d", entry.mWidth, entry.mHeight); |
| |
| layer = new Layer(entry.mWidth, entry.mHeight); |
| layer->blend = true; |
| layer->empty = true; |
| layer->fbo = 0; |
| |
| glGenTextures(1, &layer->texture); |
| glBindTexture(GL_TEXTURE_2D, layer->texture); |
| |
| glPixelStorei(GL_UNPACK_ALIGNMENT, 4); |
| |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); |
| |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
| glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
| |
| #if DEBUG_LAYERS |
| size_t size = mCache.size(); |
| for (size_t i = 0; i < size; i++) { |
| const LayerEntry& entry = mCache.itemAt(i); |
| LAYER_LOGD(" Layer size %dx%d", entry.mWidth, entry.mHeight); |
| } |
| #endif |
| } |
| |
| return layer; |
| } |
| |
| bool LayerCache::put(Layer* layer) { |
| const uint32_t size = layer->width * layer->height * 4; |
| // Don't even try to cache a layer that's bigger than the cache |
| if (size < mMaxSize) { |
| // TODO: Use an LRU |
| while (mSize + size > mMaxSize) { |
| size_t position = 0; |
| #if LAYER_REMOVE_BIGGEST |
| position = mCache.size() - 1; |
| #endif |
| Layer* victim = mCache.itemAt(position).mLayer; |
| deleteLayer(victim); |
| mCache.removeAt(position); |
| |
| LAYER_LOGD(" Deleting layer %.2fx%.2f", victim->layer.getWidth(), |
| victim->layer.getHeight()); |
| } |
| |
| LayerEntry entry(layer); |
| |
| mCache.add(entry); |
| mSize += size; |
| |
| return true; |
| } |
| return false; |
| } |
| |
| }; // namespace uirenderer |
| }; // namespace android |