blob: 3678788d5d5053270443f30e5119329519c27a40 [file] [log] [blame]
Romain Guyc0ac1932010-07-19 18:43:02 -07001/*
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#define LOG_TAG "OpenGLRenderer"
18
19#include <GLES2/gl2.h>
20
21#include <SkCanvas.h>
22#include <SkGradientShader.h>
23
Romain Guya2341a92010-09-08 18:04:33 -070024#include <utils/threads.h>
25
Romain Guyc9855a52011-01-21 21:14:15 -080026#include "Debug.h"
Romain Guyc0ac1932010-07-19 18:43:02 -070027#include "GradientCache.h"
Romain Guyfb8b7632010-08-23 21:05:08 -070028#include "Properties.h"
Romain Guyc0ac1932010-07-19 18:43:02 -070029
30namespace android {
31namespace uirenderer {
32
33///////////////////////////////////////////////////////////////////////////////
34// Constructors/destructor
35///////////////////////////////////////////////////////////////////////////////
36
Romain Guyfb8b7632010-08-23 21:05:08 -070037GradientCache::GradientCache():
Romain Guy6203f6c2011-08-01 18:56:21 -070038 mCache(GenerationCache<GradientCacheEntry, Texture*>::kUnlimitedCapacity),
Romain Guyfb8b7632010-08-23 21:05:08 -070039 mSize(0), mMaxSize(MB(DEFAULT_GRADIENT_CACHE_SIZE)) {
40 char property[PROPERTY_VALUE_MAX];
41 if (property_get(PROPERTY_GRADIENT_CACHE_SIZE, property, NULL) > 0) {
Romain Guyc9855a52011-01-21 21:14:15 -080042 INIT_LOGD(" Setting gradient cache size to %sMB", property);
Romain Guyfb8b7632010-08-23 21:05:08 -070043 setMaxSize(MB(atof(property)));
44 } else {
Romain Guyc9855a52011-01-21 21:14:15 -080045 INIT_LOGD(" Using default gradient cache size of %.2fMB", DEFAULT_GRADIENT_CACHE_SIZE);
Romain Guyfb8b7632010-08-23 21:05:08 -070046 }
47
48 mCache.setOnEntryRemovedListener(this);
49}
50
Romain Guyc0ac1932010-07-19 18:43:02 -070051GradientCache::GradientCache(uint32_t maxByteSize):
Romain Guy6203f6c2011-08-01 18:56:21 -070052 mCache(GenerationCache<GradientCacheEntry, Texture*>::kUnlimitedCapacity),
Romain Guyc0ac1932010-07-19 18:43:02 -070053 mSize(0), mMaxSize(maxByteSize) {
54 mCache.setOnEntryRemovedListener(this);
55}
56
57GradientCache::~GradientCache() {
58 mCache.clear();
59}
60
61///////////////////////////////////////////////////////////////////////////////
62// Size management
63///////////////////////////////////////////////////////////////////////////////
64
65uint32_t GradientCache::getSize() {
66 return mSize;
67}
68
69uint32_t GradientCache::getMaxSize() {
70 return mMaxSize;
71}
72
73void GradientCache::setMaxSize(uint32_t maxSize) {
74 mMaxSize = maxSize;
75 while (mSize > mMaxSize) {
76 mCache.removeOldest();
77 }
78}
79
80///////////////////////////////////////////////////////////////////////////////
81// Callbacks
82///////////////////////////////////////////////////////////////////////////////
83
Romain Guy6203f6c2011-08-01 18:56:21 -070084void GradientCache::operator()(GradientCacheEntry& shader, Texture*& texture) {
85 if (texture) {
Romain Guyc0ac1932010-07-19 18:43:02 -070086 const uint32_t size = texture->width * texture->height * 4;
87 mSize -= size;
88 }
89
90 if (texture) {
91 glDeleteTextures(1, &texture->id);
92 delete texture;
93 }
94}
95
96///////////////////////////////////////////////////////////////////////////////
97// Caching
98///////////////////////////////////////////////////////////////////////////////
99
Romain Guy6203f6c2011-08-01 18:56:21 -0700100Texture* GradientCache::get(uint32_t* colors, float* positions,
101 int count, SkShader::TileMode tileMode) {
Romain Guyc0ac1932010-07-19 18:43:02 -0700102
Romain Guy6203f6c2011-08-01 18:56:21 -0700103 GradientCacheEntry gradient(colors, positions, count, tileMode);
104 Texture* texture = mCache.get(gradient);
Romain Guyc0ac1932010-07-19 18:43:02 -0700105
Romain Guy6203f6c2011-08-01 18:56:21 -0700106 if (!texture) {
107 texture = addLinearGradient(gradient, colors, positions, count, tileMode);
Romain Guyfe48f652010-11-11 15:36:56 -0800108 }
Romain Guy6203f6c2011-08-01 18:56:21 -0700109
110 return texture;
Romain Guyfe48f652010-11-11 15:36:56 -0800111}
112
113void GradientCache::clear() {
Romain Guyc0ac1932010-07-19 18:43:02 -0700114 mCache.clear();
115}
116
Romain Guy6203f6c2011-08-01 18:56:21 -0700117Texture* GradientCache::addLinearGradient(GradientCacheEntry& gradient,
118 uint32_t* colors, float* positions, int count, SkShader::TileMode tileMode) {
Romain Guyc0ac1932010-07-19 18:43:02 -0700119 SkBitmap bitmap;
120 bitmap.setConfig(SkBitmap::kARGB_8888_Config, 1024, 1);
121 bitmap.allocPixels();
122 bitmap.eraseColor(0);
123
124 SkCanvas canvas(bitmap);
125
126 SkPoint points[2];
127 points[0].set(0.0f, 0.0f);
128 points[1].set(bitmap.width(), 0.0f);
129
130 SkShader* localShader = SkGradientShader::CreateLinear(points,
131 reinterpret_cast<const SkColor*>(colors), positions, count, tileMode);
132
133 SkPaint p;
134 p.setStyle(SkPaint::kStrokeAndFill_Style);
135 p.setShader(localShader)->unref();
136
137 canvas.drawRectCoords(0.0f, 0.0f, bitmap.width(), 1.0f, p);
138
139 // Asume the cache is always big enough
140 const uint32_t size = bitmap.rowBytes() * bitmap.height();
141 while (mSize + size > mMaxSize) {
142 mCache.removeOldest();
143 }
144
145 Texture* texture = new Texture;
146 generateTexture(&bitmap, texture);
147
148 mSize += size;
Romain Guy6203f6c2011-08-01 18:56:21 -0700149 mCache.put(gradient, texture);
Romain Guyc0ac1932010-07-19 18:43:02 -0700150
151 return texture;
152}
153
154void GradientCache::generateTexture(SkBitmap* bitmap, Texture* texture) {
155 SkAutoLockPixels autoLock(*bitmap);
156 if (!bitmap->readyToDraw()) {
Steve Block3762c312012-01-06 19:20:56 +0000157 ALOGE("Cannot generate texture from shader");
Romain Guyc0ac1932010-07-19 18:43:02 -0700158 return;
159 }
160
161 texture->generation = bitmap->getGenerationID();
162 texture->width = bitmap->width();
163 texture->height = bitmap->height();
164
165 glGenTextures(1, &texture->id);
166
167 glBindTexture(GL_TEXTURE_2D, texture->id);
168 glPixelStorei(GL_UNPACK_ALIGNMENT, bitmap->bytesPerPixel());
169
170 texture->blend = !bitmap->isOpaque();
171 glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap->rowBytesAsPixels(), texture->height, 0,
172 GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels());
173
Romain Guy39d252a2011-12-12 18:14:06 -0800174 texture->setFilter(GL_LINEAR);
175 texture->setWrap(GL_CLAMP_TO_EDGE);
Romain Guyc0ac1932010-07-19 18:43:02 -0700176}
177
178}; // namespace uirenderer
179}; // namespace android