3762c31172
See https://android-git.corp.google.com/g/#/c/157220 Bug: 5449033 Change-Id: Ic9c19d30693bd56755f55906127cd6bd7126096c
288 lines
8.9 KiB
C++
288 lines
8.9 KiB
C++
/*
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* Copyright (C) 2010 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "OpenGLRenderer"
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#include <GLES2/gl2.h>
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#include <SkCanvas.h>
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#include <utils/threads.h>
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#include "TextureCache.h"
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#include "Properties.h"
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namespace android {
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namespace uirenderer {
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///////////////////////////////////////////////////////////////////////////////
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// Constructors/destructor
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///////////////////////////////////////////////////////////////////////////////
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TextureCache::TextureCache():
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mCache(GenerationCache<SkBitmap*, Texture*>::kUnlimitedCapacity),
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mSize(0), mMaxSize(MB(DEFAULT_TEXTURE_CACHE_SIZE)),
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mFlushRate(DEFAULT_TEXTURE_CACHE_FLUSH_RATE) {
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char property[PROPERTY_VALUE_MAX];
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if (property_get(PROPERTY_TEXTURE_CACHE_SIZE, property, NULL) > 0) {
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INIT_LOGD(" Setting texture cache size to %sMB", property);
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setMaxSize(MB(atof(property)));
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} else {
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INIT_LOGD(" Using default texture cache size of %.2fMB", DEFAULT_TEXTURE_CACHE_SIZE);
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}
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if (property_get(PROPERTY_TEXTURE_CACHE_FLUSH_RATE, property, NULL) > 0) {
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float flushRate = atof(property);
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INIT_LOGD(" Setting texture cache flush rate to %.2f%%", flushRate * 100.0f);
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setFlushRate(flushRate);
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} else {
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INIT_LOGD(" Using default texture cache flush rate of %.2f%%",
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DEFAULT_TEXTURE_CACHE_FLUSH_RATE * 100.0f);
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}
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init();
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}
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TextureCache::TextureCache(uint32_t maxByteSize):
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mCache(GenerationCache<SkBitmap*, Texture*>::kUnlimitedCapacity),
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mSize(0), mMaxSize(maxByteSize) {
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init();
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}
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TextureCache::~TextureCache() {
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mCache.clear();
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}
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void TextureCache::init() {
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mCache.setOnEntryRemovedListener(this);
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glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
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INIT_LOGD(" Maximum texture dimension is %d pixels", mMaxTextureSize);
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mDebugEnabled = readDebugLevel() & kDebugCaches;
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}
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///////////////////////////////////////////////////////////////////////////////
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// Size management
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///////////////////////////////////////////////////////////////////////////////
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uint32_t TextureCache::getSize() {
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return mSize;
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}
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uint32_t TextureCache::getMaxSize() {
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return mMaxSize;
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}
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void TextureCache::setMaxSize(uint32_t maxSize) {
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mMaxSize = maxSize;
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while (mSize > mMaxSize) {
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mCache.removeOldest();
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}
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}
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void TextureCache::setFlushRate(float flushRate) {
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mFlushRate = fmaxf(0.0f, fminf(1.0f, flushRate));
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}
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///////////////////////////////////////////////////////////////////////////////
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// Callbacks
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///////////////////////////////////////////////////////////////////////////////
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void TextureCache::operator()(SkBitmap*& bitmap, Texture*& texture) {
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// This will be called already locked
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if (texture) {
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mSize -= texture->bitmapSize;
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TEXTURE_LOGD("TextureCache::callback: name, removed size, mSize = %d, %d, %d",
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texture->id, texture->bitmapSize, mSize);
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if (mDebugEnabled) {
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ALOGD("Texture deleted, size = %d", texture->bitmapSize);
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}
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glDeleteTextures(1, &texture->id);
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delete texture;
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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// Caching
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///////////////////////////////////////////////////////////////////////////////
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Texture* TextureCache::get(SkBitmap* bitmap) {
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Texture* texture = mCache.get(bitmap);
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if (!texture) {
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if (bitmap->width() > mMaxTextureSize || bitmap->height() > mMaxTextureSize) {
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ALOGW("Bitmap too large to be uploaded into a texture (%dx%d, max=%dx%d)",
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bitmap->width(), bitmap->height(), mMaxTextureSize, mMaxTextureSize);
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return NULL;
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}
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const uint32_t size = bitmap->rowBytes() * bitmap->height();
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// Don't even try to cache a bitmap that's bigger than the cache
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if (size < mMaxSize) {
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while (mSize + size > mMaxSize) {
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mCache.removeOldest();
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}
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}
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texture = new Texture;
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texture->bitmapSize = size;
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generateTexture(bitmap, texture, false);
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if (size < mMaxSize) {
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mSize += size;
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TEXTURE_LOGD("TextureCache::get: create texture(%p): name, size, mSize = %d, %d, %d",
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bitmap, texture->id, size, mSize);
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if (mDebugEnabled) {
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ALOGD("Texture created, size = %d", size);
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}
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mCache.put(bitmap, texture);
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} else {
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texture->cleanup = true;
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}
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} else if (bitmap->getGenerationID() != texture->generation) {
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generateTexture(bitmap, texture, true);
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}
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return texture;
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}
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void TextureCache::remove(SkBitmap* bitmap) {
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mCache.remove(bitmap);
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}
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void TextureCache::removeDeferred(SkBitmap* bitmap) {
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Mutex::Autolock _l(mLock);
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mGarbage.push(bitmap);
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}
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void TextureCache::clearGarbage() {
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Mutex::Autolock _l(mLock);
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size_t count = mGarbage.size();
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for (size_t i = 0; i < count; i++) {
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mCache.remove(mGarbage.itemAt(i));
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}
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mGarbage.clear();
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}
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void TextureCache::clear() {
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mCache.clear();
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TEXTURE_LOGD("TextureCache:clear(), mSize = %d", mSize);
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}
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void TextureCache::flush() {
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if (mFlushRate >= 1.0f || mCache.size() == 0) return;
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if (mFlushRate <= 0.0f) {
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clear();
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return;
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}
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uint32_t targetSize = uint32_t(mSize * mFlushRate);
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TEXTURE_LOGD("TextureCache::flush: target size: %d", targetSize);
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while (mSize > targetSize) {
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mCache.removeOldest();
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}
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}
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void TextureCache::generateTexture(SkBitmap* bitmap, Texture* texture, bool regenerate) {
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SkAutoLockPixels alp(*bitmap);
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if (!bitmap->readyToDraw()) {
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ALOGE("Cannot generate texture from bitmap");
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return;
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}
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const bool resize = !regenerate || bitmap->width() != int(texture->width) ||
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bitmap->height() != int(texture->height);
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if (!regenerate) {
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glGenTextures(1, &texture->id);
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}
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texture->generation = bitmap->getGenerationID();
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texture->width = bitmap->width();
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texture->height = bitmap->height();
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glBindTexture(GL_TEXTURE_2D, texture->id);
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if (!regenerate) {
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glPixelStorei(GL_UNPACK_ALIGNMENT, bitmap->bytesPerPixel());
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}
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switch (bitmap->getConfig()) {
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case SkBitmap::kA8_Config:
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if (!regenerate) {
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
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}
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uploadToTexture(resize, GL_ALPHA, bitmap->rowBytesAsPixels(), texture->height,
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GL_UNSIGNED_BYTE, bitmap->getPixels());
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texture->blend = true;
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break;
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case SkBitmap::kRGB_565_Config:
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uploadToTexture(resize, GL_RGB, bitmap->rowBytesAsPixels(), texture->height,
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GL_UNSIGNED_SHORT_5_6_5, bitmap->getPixels());
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texture->blend = false;
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break;
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case SkBitmap::kARGB_8888_Config:
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uploadToTexture(resize, GL_RGBA, bitmap->rowBytesAsPixels(), texture->height,
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GL_UNSIGNED_BYTE, bitmap->getPixels());
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// Do this after calling getPixels() to make sure Skia's deferred
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// decoding happened
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texture->blend = !bitmap->isOpaque();
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break;
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case SkBitmap::kARGB_4444_Config:
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case SkBitmap::kIndex8_Config:
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uploadLoFiTexture(resize, bitmap, texture->width, texture->height);
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texture->blend = !bitmap->isOpaque();
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break;
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default:
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ALOGW("Unsupported bitmap config: %d", bitmap->getConfig());
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break;
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}
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if (!regenerate) {
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texture->setFilter(GL_NEAREST);
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texture->setWrap(GL_CLAMP_TO_EDGE);
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}
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}
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void TextureCache::uploadLoFiTexture(bool resize, SkBitmap* bitmap,
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uint32_t width, uint32_t height) {
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SkBitmap rgbaBitmap;
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rgbaBitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
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rgbaBitmap.allocPixels();
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rgbaBitmap.eraseColor(0);
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rgbaBitmap.setIsOpaque(bitmap->isOpaque());
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SkCanvas canvas(rgbaBitmap);
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canvas.drawBitmap(*bitmap, 0.0f, 0.0f, NULL);
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uploadToTexture(resize, GL_RGBA, rgbaBitmap.rowBytesAsPixels(), height,
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GL_UNSIGNED_BYTE, rgbaBitmap.getPixels());
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}
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void TextureCache::uploadToTexture(bool resize, GLenum format, GLsizei width, GLsizei height,
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GLenum type, const GLvoid * data) {
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if (resize) {
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glTexImage2D(GL_TEXTURE_2D, 0, format, width, height, 0, format, type, data);
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} else {
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glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height, format, type, data);
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}
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}
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}; // namespace uirenderer
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}; // namespace android
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