1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
|
/*
* 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 "TextureCache.h"
#include "Properties.h"
namespace android {
namespace uirenderer {
///////////////////////////////////////////////////////////////////////////////
// Constructors/destructor
///////////////////////////////////////////////////////////////////////////////
TextureCache::TextureCache():
mCache(GenerationCache<SkBitmap*, Texture*>::kUnlimitedCapacity),
mSize(0), mMaxSize(MB(DEFAULT_TEXTURE_CACHE_SIZE)) {
char property[PROPERTY_VALUE_MAX];
if (property_get(PROPERTY_TEXTURE_CACHE_SIZE, property, NULL) > 0) {
LOGD(" Setting texture cache size to %sMB", property);
setMaxSize(MB(atof(property)));
} else {
LOGD(" Using default texture cache size of %.2fMB", DEFAULT_TEXTURE_CACHE_SIZE);
}
init();
}
TextureCache::TextureCache(uint32_t maxByteSize):
mCache(GenerationCache<SkBitmap*, Texture*>::kUnlimitedCapacity),
mSize(0), mMaxSize(maxByteSize) {
init();
}
TextureCache::~TextureCache() {
mCache.clear();
}
void TextureCache::init() {
mCache.setOnEntryRemovedListener(this);
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &mMaxTextureSize);
LOGD(" Maximum texture dimension is %d pixels", mMaxTextureSize);
}
///////////////////////////////////////////////////////////////////////////////
// Size management
///////////////////////////////////////////////////////////////////////////////
uint32_t TextureCache::getSize() {
return mSize;
}
uint32_t TextureCache::getMaxSize() {
return mMaxSize;
}
void TextureCache::setMaxSize(uint32_t maxSize) {
mMaxSize = maxSize;
while (mSize > mMaxSize) {
mCache.removeOldest();
}
}
///////////////////////////////////////////////////////////////////////////////
// Callbacks
///////////////////////////////////////////////////////////////////////////////
void TextureCache::operator()(SkBitmap*& bitmap, Texture*& texture) {
if (bitmap) {
const uint32_t size = bitmap->rowBytes() * bitmap->height();
mSize -= size;
}
if (texture) {
glDeleteTextures(1, &texture->id);
delete texture;
}
}
///////////////////////////////////////////////////////////////////////////////
// Caching
///////////////////////////////////////////////////////////////////////////////
Texture* TextureCache::get(SkBitmap* bitmap) {
Texture* texture = mCache.get(bitmap);
if (!texture) {
if (bitmap->width() > mMaxTextureSize || bitmap->height() > mMaxTextureSize) {
LOGW("Bitmap too large to be uploaded into a texture");
return NULL;
}
const uint32_t size = bitmap->rowBytes() * bitmap->height();
// Don't even try to cache a bitmap that's bigger than the cache
if (size < mMaxSize) {
while (mSize + size > mMaxSize) {
mCache.removeOldest();
}
}
texture = new Texture;
generateTexture(bitmap, texture, false);
if (size < mMaxSize) {
mSize += size;
mCache.put(bitmap, texture);
} else {
texture->cleanup = true;
}
} else if (bitmap->getGenerationID() != texture->generation) {
generateTexture(bitmap, texture, true);
}
return texture;
}
void TextureCache::remove(SkBitmap* bitmap) {
mCache.remove(bitmap);
}
void TextureCache::clear() {
mCache.clear();
}
void TextureCache::generateTexture(SkBitmap* bitmap, Texture* texture, bool regenerate) {
SkAutoLockPixels alp(*bitmap);
if (!bitmap->readyToDraw()) {
LOGE("Cannot generate texture from bitmap");
return;
}
if (!regenerate) {
texture->generation = bitmap->getGenerationID();
texture->width = bitmap->width();
texture->height = bitmap->height();
glGenTextures(1, &texture->id);
}
glBindTexture(GL_TEXTURE_2D, texture->id);
glPixelStorei(GL_UNPACK_ALIGNMENT, bitmap->bytesPerPixel());
switch (bitmap->getConfig()) {
case SkBitmap::kA8_Config:
texture->blend = true;
glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, bitmap->rowBytesAsPixels(), texture->height, 0,
GL_ALPHA, GL_UNSIGNED_BYTE, bitmap->getPixels());
break;
case SkBitmap::kRGB_565_Config:
texture->blend = false;
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, bitmap->rowBytesAsPixels(), texture->height, 0,
GL_RGB, GL_UNSIGNED_SHORT_5_6_5, bitmap->getPixels());
break;
case SkBitmap::kARGB_8888_Config:
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap->rowBytesAsPixels(), texture->height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels());
// Do this after calling getPixels() to make sure Skia's deferred
// decoding happened
texture->blend = !bitmap->isOpaque();
break;
default:
break;
}
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);
}
}; // namespace uirenderer
}; // namespace android
|
