GradientCache.cpp revision fb8b763f762ae21923c58d64caa729b012f40e05
1c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/* 2c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * Copyright (C) 2010 The Android Open Source Project 3c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * 4c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * Licensed under the Apache License, Version 2.0 (the "License"); 5c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * you may not use this file except in compliance with the License. 6c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * You may obtain a copy of the License at 7c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * 8c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * http://www.apache.org/licenses/LICENSE-2.0 9c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * 10c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * Unless required by applicable law or agreed to in writing, software 11c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * distributed under the License is distributed on an "AS IS" BASIS, 12c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * See the License for the specific language governing permissions and 14c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy * limitations under the License. 15c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy */ 16c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 17c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#define LOG_TAG "OpenGLRenderer" 18c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 19c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#include <GLES2/gl2.h> 20c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 21c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#include <SkCanvas.h> 22c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#include <SkGradientShader.h> 23c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 24c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#include "GradientCache.h" 25fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy#include "Properties.h" 26c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 27c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guynamespace android { 28c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guynamespace uirenderer { 29c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 30c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 31c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy// Constructors/destructor 32c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 33c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 34fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyGradientCache::GradientCache(): 35fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCache(GenerationCache<SkShader*, Texture*>::kUnlimitedCapacity), 36fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mSize(0), mMaxSize(MB(DEFAULT_GRADIENT_CACHE_SIZE)) { 37fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy char property[PROPERTY_VALUE_MAX]; 38fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (property_get(PROPERTY_GRADIENT_CACHE_SIZE, property, NULL) > 0) { 39fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LOGD(" Setting gradient cache size to %sMB", property); 40fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy setMaxSize(MB(atof(property))); 41fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else { 42fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy LOGD(" Using default gradient cache size of %.2fMB", DEFAULT_GRADIENT_CACHE_SIZE); 43fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } 44fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 45fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCache.setOnEntryRemovedListener(this); 46fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy} 47fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 48c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain GuyGradientCache::GradientCache(uint32_t maxByteSize): 49c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache(GenerationCache<SkShader*, Texture*>::kUnlimitedCapacity), 50c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mSize(0), mMaxSize(maxByteSize) { 51c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.setOnEntryRemovedListener(this); 52c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 53c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 54c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain GuyGradientCache::~GradientCache() { 55c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.clear(); 56c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 57c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 58c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 59c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy// Size management 60c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 61c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 62c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyuint32_t GradientCache::getSize() { 63c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return mSize; 64c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 65c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 66c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyuint32_t GradientCache::getMaxSize() { 67c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return mMaxSize; 68c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 69c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 70c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid GradientCache::setMaxSize(uint32_t maxSize) { 71c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mMaxSize = maxSize; 72c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy while (mSize > mMaxSize) { 73c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.removeOldest(); 74c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 75c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 76c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 77c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 78c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy// Callbacks 79c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 80c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 81c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid GradientCache::operator()(SkShader*& shader, Texture*& texture) { 82c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy if (shader) { 83c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const uint32_t size = texture->width * texture->height * 4; 84c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mSize -= size; 85c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 86c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 87c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy if (texture) { 88c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glDeleteTextures(1, &texture->id); 89c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy delete texture; 90c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 91c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 92c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 93c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 94c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy// Caching 95c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 96c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 97c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain GuyTexture* GradientCache::get(SkShader* shader) { 989cccc2b9bdd4850a3f9679569aaec3ab98477a5dRomain Guy return mCache.get(shader); 99c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 100c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 101c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid GradientCache::remove(SkShader* shader) { 102c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.remove(shader); 103c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 104c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 105c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid GradientCache::clear() { 106c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.clear(); 107c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 108c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 109c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain GuyTexture* GradientCache::addLinearGradient(SkShader* shader, float* bounds, uint32_t* colors, 110c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy float* positions, int count, SkShader::TileMode tileMode) { 111c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkBitmap bitmap; 112c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy bitmap.setConfig(SkBitmap::kARGB_8888_Config, 1024, 1); 113c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy bitmap.allocPixels(); 114c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy bitmap.eraseColor(0); 115c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 116c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkCanvas canvas(bitmap); 117c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 118c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkPoint points[2]; 119c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy points[0].set(0.0f, 0.0f); 120c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy points[1].set(bitmap.width(), 0.0f); 121c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 122c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkShader* localShader = SkGradientShader::CreateLinear(points, 123c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy reinterpret_cast<const SkColor*>(colors), positions, count, tileMode); 124c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 125c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkPaint p; 126c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy p.setStyle(SkPaint::kStrokeAndFill_Style); 127c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy p.setShader(localShader)->unref(); 128c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 129c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy canvas.drawRectCoords(0.0f, 0.0f, bitmap.width(), 1.0f, p); 130c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 131c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy // Asume the cache is always big enough 132c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const uint32_t size = bitmap.rowBytes() * bitmap.height(); 133c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy while (mSize + size > mMaxSize) { 134c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.removeOldest(); 135c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 136c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 137c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy Texture* texture = new Texture; 138c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy generateTexture(&bitmap, texture); 139c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 140c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mSize += size; 141c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.put(shader, texture); 142c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 143c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return texture; 144c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 145c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 146c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid GradientCache::generateTexture(SkBitmap* bitmap, Texture* texture) { 147c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkAutoLockPixels autoLock(*bitmap); 148c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy if (!bitmap->readyToDraw()) { 149c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy LOGE("Cannot generate texture from shader"); 150c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return; 151c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 152c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 153c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture->generation = bitmap->getGenerationID(); 154c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture->width = bitmap->width(); 155c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture->height = bitmap->height(); 156c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 157c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glGenTextures(1, &texture->id); 158c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 159c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glBindTexture(GL_TEXTURE_2D, texture->id); 160c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glPixelStorei(GL_UNPACK_ALIGNMENT, bitmap->bytesPerPixel()); 161c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 162c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture->blend = !bitmap->isOpaque(); 163c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap->rowBytesAsPixels(), texture->height, 0, 164c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels()); 165c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 166c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR); 167c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR); 168c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 169c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); 170c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); 171c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 172c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 173c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy}; // namespace uirenderer 174c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy}; // namespace android 175