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1 | |
2 /* | |
3 * Copyright 2011 Google Inc. | |
4 * | |
5 * Use of this source code is governed by a BSD-style license that can be | |
6 * found in the LICENSE file. | |
7 */ | |
8 #include "gl/SkNativeGLContext.h" | |
9 #include "AvailabilityMacros.h" | |
10 | |
11 SkNativeGLContext::AutoContextRestore::AutoContextRestore() { | |
12 fOldCGLContext = CGLGetCurrentContext(); | |
13 } | |
14 | |
15 SkNativeGLContext::AutoContextRestore::~AutoContextRestore() { | |
16 CGLSetCurrentContext(fOldCGLContext); | |
17 } | |
18 | |
19 /////////////////////////////////////////////////////////////////////////////// | |
20 | |
21 SkNativeGLContext::SkNativeGLContext() | |
22 : fContext(NULL) { | |
23 } | |
24 | |
25 SkNativeGLContext::~SkNativeGLContext() { | |
26 this->destroyGLContext(); | |
27 } | |
28 | |
29 void SkNativeGLContext::destroyGLContext() { | |
30 if (fContext) { | |
31 CGLReleaseContext(fContext); | |
32 } | |
33 } | |
34 | |
35 const GrGLInterface* SkNativeGLContext::createGLContext(GrGLStandard forcedGpuAP
I) { | |
36 SkASSERT(NULL == fContext); | |
37 if (kGLES_GrGLStandard == forcedGpuAPI) { | |
38 return NULL; | |
39 } | |
40 | |
41 CGLPixelFormatAttribute attributes[] = { | |
42 #if MAC_OS_X_VERSION_10_7 | |
43 kCGLPFAOpenGLProfile, (CGLPixelFormatAttribute) kCGLOGLPVersion_3_2_Core
, | |
44 #endif | |
45 kCGLPFADoubleBuffer, | |
46 (CGLPixelFormatAttribute)0 | |
47 }; | |
48 CGLPixelFormatObj pixFormat; | |
49 GLint npix; | |
50 | |
51 CGLChoosePixelFormat(attributes, &pixFormat, &npix); | |
52 | |
53 if (NULL == pixFormat) { | |
54 SkDebugf("CGLChoosePixelFormat failed."); | |
55 return NULL; | |
56 } | |
57 | |
58 CGLCreateContext(pixFormat, NULL, &fContext); | |
59 CGLReleasePixelFormat(pixFormat); | |
60 | |
61 if (NULL == fContext) { | |
62 SkDebugf("CGLCreateContext failed."); | |
63 return NULL; | |
64 } | |
65 | |
66 CGLSetCurrentContext(fContext); | |
67 | |
68 const GrGLInterface* interface = GrGLCreateNativeInterface(); | |
69 if (NULL == interface) { | |
70 SkDebugf("Context could not create GL interface.\n"); | |
71 this->destroyGLContext(); | |
72 return NULL; | |
73 } | |
74 | |
75 return interface; | |
76 } | |
77 | |
78 void SkNativeGLContext::makeCurrent() const { | |
79 CGLSetCurrentContext(fContext); | |
80 } | |
81 | |
82 void SkNativeGLContext::swapBuffers() const { | |
83 CGLFlushDrawable(fContext); | |
84 } | |
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