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
|
#include "SkGLCanvas.h"
#include "SkGLDevice.h"
#include "SkBlitter.h"
#include "SkDraw.h"
#include "SkDrawProcs.h"
#include "SkGL.h"
#include "SkTemplates.h"
#include "SkUtils.h"
#include "SkXfermode.h"
#ifdef SK_GL_DEVICE_FBO
#define USE_FBO_DEVICE
#include "SkGLDevice_FBO.h"
#else
#define USE_SWLAYER_DEVICE
#include "SkGLDevice_SWLayer.h"
#endif
// maximum number of entries in our texture cache (before purging)
#define kTexCountMax_Default 256
// maximum number of bytes used (by gl) for the texture cache (before purging)
#define kTexSizeMax_Default (4 * 1024 * 1024)
///////////////////////////////////////////////////////////////////////////////
SkGLCanvas::SkGLCanvas() {
glEnable(GL_TEXTURE_2D);
glEnable(GL_SCISSOR_TEST);
glEnableClientState(GL_VERTEX_ARRAY);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
fViewportSize.set(0, 0);
}
SkGLCanvas::~SkGLCanvas() {
// call this now, while our override of restore() is in effect
this->restoreToCount(1);
}
///////////////////////////////////////////////////////////////////////////////
bool SkGLCanvas::getViewport(SkIPoint* size) const {
if (size) {
*size = fViewportSize;
}
return true;
}
bool SkGLCanvas::setViewport(int width, int height) {
fViewportSize.set(width, height);
const bool isOpaque = false; // should this be a parameter to setViewport?
const bool isForLayer = false; // viewport is the base layer
SkDevice* device = this->createDevice(SkBitmap::kARGB_8888_Config, width,
height, isOpaque, isForLayer);
this->setDevice(device)->unref();
return true;
}
SkDevice* SkGLCanvas::createDevice(SkBitmap::Config, int width, int height,
bool isOpaque, bool isForLayer) {
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
bitmap.setIsOpaque(isOpaque);
#ifdef USE_FBO_DEVICE
return SkNEW_ARGS(SkGLDevice_FBO, (bitmap, isForLayer));
#elif defined(USE_SWLAYER_DEVICE)
if (isForLayer) {
bitmap.allocPixels();
if (!bitmap.isOpaque()) {
bitmap.eraseColor(0);
}
return SkNEW_ARGS(SkGLDevice_SWLayer, (bitmap));
} else {
return SkNEW_ARGS(SkGLDevice, (bitmap, isForLayer));
}
#else
return SkNEW_ARGS(SkGLDevice, (bitmap, isForLayer));
#endif
}
///////////////////////////////////////////////////////////////////////////////
#include "SkTextureCache.h"
#include "SkThread.h"
static SkMutex gTextureCacheMutex;
static SkTextureCache gTextureCache(kTexCountMax_Default, kTexSizeMax_Default);
static void* gTextureGLContext;
SkGLDevice::TexCache* SkGLDevice::LockTexCache(const SkBitmap& bitmap,
GLuint* name, SkPoint* size) {
SkAutoMutexAcquire amc(gTextureCacheMutex);
void* ctx = SkGetGLContext();
if (gTextureGLContext != ctx) {
gTextureGLContext = ctx;
gTextureCache.zapAllTextures();
}
SkTextureCache::Entry* entry = gTextureCache.lock(bitmap);
if (NULL != entry) {
if (name) {
*name = entry->name();
}
if (size) {
*size = entry->texSize();
}
}
return (TexCache*)entry;
}
void SkGLDevice::UnlockTexCache(TexCache* cache) {
SkAutoMutexAcquire amc(gTextureCacheMutex);
gTextureCache.unlock((SkTextureCache::Entry*)cache);
}
// public exposure of texture cache settings
size_t SkGLCanvas::GetTextureCacheMaxCount() {
SkAutoMutexAcquire amc(gTextureCacheMutex);
return gTextureCache.getMaxCount();
}
size_t SkGLCanvas::GetTextureCacheMaxSize() {
SkAutoMutexAcquire amc(gTextureCacheMutex);
return gTextureCache.getMaxSize();
}
void SkGLCanvas::SetTextureCacheMaxCount(size_t count) {
SkAutoMutexAcquire amc(gTextureCacheMutex);
gTextureCache.setMaxCount(count);
}
void SkGLCanvas::SetTextureCacheMaxSize(size_t size) {
SkAutoMutexAcquire amc(gTextureCacheMutex);
gTextureCache.setMaxSize(size);
}
|
