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
|
/*
* 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 <SkCanvas.h>
#include <SkGradientShader.h>
#include "GradientCache.h"
#include "Properties.h"
namespace android {
namespace uirenderer {
///////////////////////////////////////////////////////////////////////////////
// Constructors/destructor
///////////////////////////////////////////////////////////////////////////////
GradientCache::GradientCache():
mCache(GenerationCache<SkShader*, Texture*>::kUnlimitedCapacity),
mSize(0), mMaxSize(MB(DEFAULT_GRADIENT_CACHE_SIZE)) {
char property[PROPERTY_VALUE_MAX];
if (property_get(PROPERTY_GRADIENT_CACHE_SIZE, property, NULL) > 0) {
LOGD(" Setting gradient cache size to %sMB", property);
setMaxSize(MB(atof(property)));
} else {
LOGD(" Using default gradient cache size of %.2fMB", DEFAULT_GRADIENT_CACHE_SIZE);
}
mCache.setOnEntryRemovedListener(this);
}
GradientCache::GradientCache(uint32_t maxByteSize):
mCache(GenerationCache<SkShader*, Texture*>::kUnlimitedCapacity),
mSize(0), mMaxSize(maxByteSize) {
mCache.setOnEntryRemovedListener(this);
}
GradientCache::~GradientCache() {
mCache.clear();
}
///////////////////////////////////////////////////////////////////////////////
// Size management
///////////////////////////////////////////////////////////////////////////////
uint32_t GradientCache::getSize() {
return mSize;
}
uint32_t GradientCache::getMaxSize() {
return mMaxSize;
}
void GradientCache::setMaxSize(uint32_t maxSize) {
mMaxSize = maxSize;
while (mSize > mMaxSize) {
mCache.removeOldest();
}
}
///////////////////////////////////////////////////////////////////////////////
// Callbacks
///////////////////////////////////////////////////////////////////////////////
void GradientCache::operator()(SkShader*& shader, Texture*& texture) {
if (shader) {
const uint32_t size = texture->width * texture->height * 4;
mSize -= size;
}
if (texture) {
glDeleteTextures(1, &texture->id);
delete texture;
}
}
///////////////////////////////////////////////////////////////////////////////
// Caching
///////////////////////////////////////////////////////////////////////////////
Texture* GradientCache::get(SkShader* shader) {
return mCache.get(shader);
}
void GradientCache::remove(SkShader* shader) {
mCache.remove(shader);
}
void GradientCache::clear() {
mCache.clear();
}
Texture* GradientCache::addLinearGradient(SkShader* shader, float* bounds, uint32_t* colors,
float* positions, int count, SkShader::TileMode tileMode) {
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, 1024, 1);
bitmap.allocPixels();
bitmap.eraseColor(0);
SkCanvas canvas(bitmap);
SkPoint points[2];
points[0].set(0.0f, 0.0f);
points[1].set(bitmap.width(), 0.0f);
SkShader* localShader = SkGradientShader::CreateLinear(points,
reinterpret_cast<const SkColor*>(colors), positions, count, tileMode);
SkPaint p;
p.setStyle(SkPaint::kStrokeAndFill_Style);
p.setShader(localShader)->unref();
canvas.drawRectCoords(0.0f, 0.0f, bitmap.width(), 1.0f, p);
// Asume the cache is always big enough
const uint32_t size = bitmap.rowBytes() * bitmap.height();
while (mSize + size > mMaxSize) {
mCache.removeOldest();
}
Texture* texture = new Texture;
generateTexture(&bitmap, texture);
mSize += size;
mCache.put(shader, texture);
return texture;
}
void GradientCache::generateTexture(SkBitmap* bitmap, Texture* texture) {
SkAutoLockPixels autoLock(*bitmap);
if (!bitmap->readyToDraw()) {
LOGE("Cannot generate texture from shader");
return;
}
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());
texture->blend = !bitmap->isOpaque();
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, bitmap->rowBytesAsPixels(), texture->height, 0,
GL_RGBA, GL_UNSIGNED_BYTE, bitmap->getPixels());
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
|
