GradientCache.cpp revision 6203f6c8147069976342be8f42add797a50f9557
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 24a2341a9f6addcd79723965ec5b1a1c5ae0f8bd65Romain Guy#include <utils/threads.h> 25a2341a9f6addcd79723965ec5b1a1c5ae0f8bd65Romain Guy 26c9855a53edfac818dc68714557185977556f849dRomain Guy#include "Debug.h" 27c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy#include "GradientCache.h" 28fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy#include "Properties.h" 29c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 30c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guynamespace android { 31c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guynamespace uirenderer { 32c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 33c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 34c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy// Constructors/destructor 35c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 36c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 37fb8b763f762ae21923c58d64caa729b012f40e05Romain GuyGradientCache::GradientCache(): 386203f6c8147069976342be8f42add797a50f9557Romain Guy mCache(GenerationCache<GradientCacheEntry, Texture*>::kUnlimitedCapacity), 39fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mSize(0), mMaxSize(MB(DEFAULT_GRADIENT_CACHE_SIZE)) { 40fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy char property[PROPERTY_VALUE_MAX]; 41fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy if (property_get(PROPERTY_GRADIENT_CACHE_SIZE, property, NULL) > 0) { 42c9855a53edfac818dc68714557185977556f849dRomain Guy INIT_LOGD(" Setting gradient cache size to %sMB", property); 43fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy setMaxSize(MB(atof(property))); 44fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } else { 45c9855a53edfac818dc68714557185977556f849dRomain Guy INIT_LOGD(" Using default gradient cache size of %.2fMB", DEFAULT_GRADIENT_CACHE_SIZE); 46fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy } 47fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 48fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy mCache.setOnEntryRemovedListener(this); 49fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy} 50fb8b763f762ae21923c58d64caa729b012f40e05Romain Guy 51c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain GuyGradientCache::GradientCache(uint32_t maxByteSize): 526203f6c8147069976342be8f42add797a50f9557Romain Guy mCache(GenerationCache<GradientCacheEntry, Texture*>::kUnlimitedCapacity), 53c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mSize(0), mMaxSize(maxByteSize) { 54c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.setOnEntryRemovedListener(this); 55c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 56c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 57c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain GuyGradientCache::~GradientCache() { 58c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.clear(); 59c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 60c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 61c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 62c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy// Size management 63c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 64c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 65c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyuint32_t GradientCache::getSize() { 66c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return mSize; 67c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 68c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 69c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyuint32_t GradientCache::getMaxSize() { 70c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return mMaxSize; 71c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 72c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 73c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid GradientCache::setMaxSize(uint32_t maxSize) { 74c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mMaxSize = maxSize; 75c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy while (mSize > mMaxSize) { 76c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.removeOldest(); 77c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 78c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 79c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 80c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 81c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy// Callbacks 82c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 83c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 846203f6c8147069976342be8f42add797a50f9557Romain Guyvoid GradientCache::operator()(GradientCacheEntry& shader, Texture*& texture) { 856203f6c8147069976342be8f42add797a50f9557Romain Guy if (texture) { 86c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const uint32_t size = texture->width * texture->height * 4; 87c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mSize -= size; 88c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 89c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 90c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy if (texture) { 91c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glDeleteTextures(1, &texture->id); 92c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy delete texture; 93c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 94c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 95c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 96c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 97c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy// Caching 98c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy/////////////////////////////////////////////////////////////////////////////// 99c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1006203f6c8147069976342be8f42add797a50f9557Romain GuyTexture* GradientCache::get(uint32_t* colors, float* positions, 1016203f6c8147069976342be8f42add797a50f9557Romain Guy int count, SkShader::TileMode tileMode) { 102c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1036203f6c8147069976342be8f42add797a50f9557Romain Guy GradientCacheEntry gradient(colors, positions, count, tileMode); 1046203f6c8147069976342be8f42add797a50f9557Romain Guy Texture* texture = mCache.get(gradient); 105c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1066203f6c8147069976342be8f42add797a50f9557Romain Guy if (!texture) { 1076203f6c8147069976342be8f42add797a50f9557Romain Guy texture = addLinearGradient(gradient, colors, positions, count, tileMode); 108fe48f65922d4a3cc4aefe058cee5acec51504a20Romain Guy } 1096203f6c8147069976342be8f42add797a50f9557Romain Guy 1106203f6c8147069976342be8f42add797a50f9557Romain Guy return texture; 111fe48f65922d4a3cc4aefe058cee5acec51504a20Romain Guy} 112fe48f65922d4a3cc4aefe058cee5acec51504a20Romain Guy 113fe48f65922d4a3cc4aefe058cee5acec51504a20Romain Guyvoid GradientCache::clear() { 114c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.clear(); 115c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 116c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 1176203f6c8147069976342be8f42add797a50f9557Romain GuyTexture* GradientCache::addLinearGradient(GradientCacheEntry& gradient, 1186203f6c8147069976342be8f42add797a50f9557Romain Guy uint32_t* colors, float* positions, int count, SkShader::TileMode tileMode) { 119c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkBitmap bitmap; 120c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy bitmap.setConfig(SkBitmap::kARGB_8888_Config, 1024, 1); 121c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy bitmap.allocPixels(); 122c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy bitmap.eraseColor(0); 123c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 124c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkCanvas canvas(bitmap); 125c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 126c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkPoint points[2]; 127c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy points[0].set(0.0f, 0.0f); 128c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy points[1].set(bitmap.width(), 0.0f); 129c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 130c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkShader* localShader = SkGradientShader::CreateLinear(points, 131c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy reinterpret_cast<const SkColor*>(colors), positions, count, tileMode); 132c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 133c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkPaint p; 134c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy p.setStyle(SkPaint::kStrokeAndFill_Style); 135c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy p.setShader(localShader)->unref(); 136c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 137c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy canvas.drawRectCoords(0.0f, 0.0f, bitmap.width(), 1.0f, p); 138c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 139c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy // Asume the cache is always big enough 140c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy const uint32_t size = bitmap.rowBytes() * bitmap.height(); 141c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy while (mSize + size > mMaxSize) { 142c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mCache.removeOldest(); 143c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 144c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 145c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy Texture* texture = new Texture; 146c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy generateTexture(&bitmap, texture); 147c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 148c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy mSize += size; 1496203f6c8147069976342be8f42add797a50f9557Romain Guy mCache.put(gradient, texture); 150c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 151c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return texture; 152c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 153c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 154c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guyvoid GradientCache::generateTexture(SkBitmap* bitmap, Texture* texture) { 155c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy SkAutoLockPixels autoLock(*bitmap); 156c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy if (!bitmap->readyToDraw()) { 157c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy LOGE("Cannot generate texture from shader"); 158c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy return; 159c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy } 160c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 161c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture->generation = bitmap->getGenerationID(); 162c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture->width = bitmap->width(); 163c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture->height = bitmap->height(); 164c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 165c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glGenTextures(1, &texture->id); 166c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 167c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glBindTexture(GL_TEXTURE_2D, texture->id); 168c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glPixelStorei(GL_UNPACK_ALIGNMENT, bitmap->bytesPerPixel()); 169c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 170c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy texture->blend = !bitmap->isOpaque(); 171c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap->rowBytesAsPixels(), texture->height, 0, 172c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels()); 173c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 174e3c26851dc315b730ea0fe5ef35bb1db81f6d675Romain Guy texture->setFilter(GL_LINEAR, GL_LINEAR); 175e3c26851dc315b730ea0fe5ef35bb1db81f6d675Romain Guy texture->setWrap(GL_CLAMP_TO_EDGE, GL_CLAMP_TO_EDGE); 176c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy} 177c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy 178c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy}; // namespace uirenderer 179c0ac193b9415680f0a69e20a3f5f22d16f8053beRomain Guy}; // namespace android 180