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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2011 Google Inc. | 3 * Copyright 2011 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 #include "gl/SkGLContext.h" | 8 #include "gl/SkGLContext.h" |
9 #include "AvailabilityMacros.h" | 9 #include "AvailabilityMacros.h" |
10 | 10 |
11 #include <OpenGL/OpenGL.h> | 11 #include <OpenGL/OpenGL.h> |
12 | 12 |
13 namespace { | 13 namespace { |
14 class MacGLContext : public SkGLContext { | 14 class MacGLContext : public SkGLContext { |
15 public: | 15 public: |
16 MacGLContext(); | 16 MacGLContext(); |
17 | 17 virtual ~MacGLContext() SK_OVERRIDE; |
18 virtual ~MacGLContext(); | |
19 | |
20 virtual void makeCurrent() const SK_OVERRIDE; | 18 virtual void makeCurrent() const SK_OVERRIDE; |
21 virtual void swapBuffers() const SK_OVERRIDE; | 19 virtual void swapBuffers() const SK_OVERRIDE; |
22 protected: | |
23 virtual const GrGLInterface* createGLContext(GrGLStandard forcedGpuAPI) SK_O
VERRIDE; | |
24 virtual void destroyGLContext() SK_OVERRIDE; | |
25 | 20 |
26 private: | 21 private: |
| 22 void destroyGLContext(); |
| 23 |
27 CGLContextObj fContext; | 24 CGLContextObj fContext; |
28 }; | 25 }; |
29 | 26 |
30 MacGLContext::MacGLContext() | 27 MacGLContext::MacGLContext() |
31 : fContext(NULL) { | 28 : fContext(NULL) { |
32 } | |
33 | |
34 MacGLContext::~MacGLContext() { | |
35 this->destroyGLContext(); | |
36 } | |
37 | |
38 void MacGLContext::destroyGLContext() { | |
39 if (fContext) { | |
40 CGLReleaseContext(fContext); | |
41 } | |
42 } | |
43 | |
44 const GrGLInterface* MacGLContext::createGLContext(GrGLStandard forcedGpuAPI) { | |
45 SkASSERT(NULL == fContext); | |
46 if (kGLES_GrGLStandard == forcedGpuAPI) { | |
47 return NULL; | |
48 } | |
49 | |
50 CGLPixelFormatAttribute attributes[] = { | 29 CGLPixelFormatAttribute attributes[] = { |
51 #if MAC_OS_X_VERSION_10_7 | 30 #if MAC_OS_X_VERSION_10_7 |
52 kCGLPFAOpenGLProfile, (CGLPixelFormatAttribute) kCGLOGLPVersion_3_2_Core
, | 31 kCGLPFAOpenGLProfile, (CGLPixelFormatAttribute) kCGLOGLPVersion_3_2_Core
, |
53 #endif | 32 #endif |
54 kCGLPFADoubleBuffer, | 33 kCGLPFADoubleBuffer, |
55 (CGLPixelFormatAttribute)0 | 34 (CGLPixelFormatAttribute)0 |
56 }; | 35 }; |
57 CGLPixelFormatObj pixFormat; | 36 CGLPixelFormatObj pixFormat; |
58 GLint npix; | 37 GLint npix; |
59 | 38 |
60 CGLChoosePixelFormat(attributes, &pixFormat, &npix); | 39 CGLChoosePixelFormat(attributes, &pixFormat, &npix); |
61 | 40 |
62 if (NULL == pixFormat) { | 41 if (NULL == pixFormat) { |
63 SkDebugf("CGLChoosePixelFormat failed."); | 42 SkDebugf("CGLChoosePixelFormat failed."); |
64 return NULL; | 43 return; |
65 } | 44 } |
66 | 45 |
67 CGLCreateContext(pixFormat, NULL, &fContext); | 46 CGLCreateContext(pixFormat, NULL, &fContext); |
68 CGLReleasePixelFormat(pixFormat); | 47 CGLReleasePixelFormat(pixFormat); |
69 | 48 |
70 if (NULL == fContext) { | 49 if (NULL == fContext) { |
71 SkDebugf("CGLCreateContext failed."); | 50 SkDebugf("CGLCreateContext failed."); |
72 return NULL; | 51 return; |
73 } | 52 } |
74 | 53 |
75 CGLSetCurrentContext(fContext); | 54 CGLSetCurrentContext(fContext); |
76 | 55 |
77 const GrGLInterface* interface = GrGLCreateNativeInterface(); | 56 fGL.reset(GrGLCreateNativeInterface()); |
78 if (NULL == interface) { | 57 if (NULL == fGL.get()) { |
79 SkDebugf("Context could not create GL interface.\n"); | 58 SkDebugf("Context could not create GL interface.\n"); |
80 this->destroyGLContext(); | 59 this->destroyGLContext(); |
81 return NULL; | 60 return; |
82 } | 61 } |
| 62 if (!fGL->validate()) { |
| 63 SkDebugf("Context could not validate GL interface.\n"); |
| 64 this->destroyGLContext(); |
| 65 return; |
| 66 } |
| 67 } |
83 | 68 |
84 return interface; | 69 MacGLContext::~MacGLContext() { |
| 70 this->destroyGLContext(); |
| 71 } |
| 72 |
| 73 void MacGLContext::destroyGLContext() { |
| 74 fGL.reset(NULL); |
| 75 if (fContext) { |
| 76 CGLReleaseContext(fContext); |
| 77 fContext = NULL; |
| 78 } |
85 } | 79 } |
86 | 80 |
87 void MacGLContext::makeCurrent() const { | 81 void MacGLContext::makeCurrent() const { |
88 CGLSetCurrentContext(fContext); | 82 CGLSetCurrentContext(fContext); |
89 } | 83 } |
90 | 84 |
91 void MacGLContext::swapBuffers() const { | 85 void MacGLContext::swapBuffers() const { |
92 CGLFlushDrawable(fContext); | 86 CGLFlushDrawable(fContext); |
93 } | 87 } |
94 | 88 |
95 } // anonymous namespace | 89 } // anonymous namespace |
96 | 90 |
97 SkGLContext* SkCreatePlatformGLContext() { | 91 SkGLContext* SkCreatePlatformGLContext(GrGLStandard forcedGpuAPI) { |
98 return SkNEW(MacGLContext); | 92 if (kGLES_GrGLStandard == forcedGpuAPI) { |
| 93 return NULL; |
| 94 } |
| 95 MacGLContext* ctx = SkNEW(MacGLContext); |
| 96 if (!ctx->isValid()) { |
| 97 SkDELETE(ctx); |
| 98 return NULL; |
| 99 } |
| 100 return ctx; |
99 } | 101 } |
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