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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 | 8 |
9 #include <GL/osmesa.h> | 9 #include <GL/osmesa.h> |
10 | 10 |
11 #include "gl/SkMesaGLContext.h" | 11 #include "gl/SkMesaGLContext.h" |
12 #include "gl/GrGLDefines.h" | 12 #include "gl/GrGLDefines.h" |
13 | 13 |
| 14 static const GrGLint gBOGUS_SIZE = 16; |
| 15 |
14 SkMesaGLContext::SkMesaGLContext() | 16 SkMesaGLContext::SkMesaGLContext() |
15 : fContext(static_cast<Context>(NULL)) | 17 : fContext(static_cast<Context>(NULL)) |
16 , fImage(NULL) { | 18 , fImage(NULL) { |
17 GR_STATIC_ASSERT(sizeof(Context) == sizeof(OSMesaContext)); | 19 GR_STATIC_ASSERT(sizeof(Context) == sizeof(OSMesaContext)); |
18 } | |
19 | |
20 SkMesaGLContext::~SkMesaGLContext() { | |
21 this->destroyGLContext(); | |
22 } | |
23 | |
24 void SkMesaGLContext::destroyGLContext() { | |
25 if (fImage) { | |
26 sk_free(fImage); | |
27 fImage = NULL; | |
28 } | |
29 | |
30 if (fContext) { | |
31 OSMesaDestroyContext((OSMesaContext)fContext); | |
32 fContext = static_cast<Context>(NULL); | |
33 } | |
34 } | |
35 | |
36 static const GrGLint gBOGUS_SIZE = 16; | |
37 | |
38 const GrGLInterface* SkMesaGLContext::createGLContext(GrGLStandard forcedGpuAPI)
{ | |
39 if (kGLES_GrGLStandard == forcedGpuAPI) { | |
40 return NULL; | |
41 } | |
42 | 20 |
43 /* Create an RGBA-mode context */ | 21 /* Create an RGBA-mode context */ |
44 #if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305 | 22 #if OSMESA_MAJOR_VERSION * 100 + OSMESA_MINOR_VERSION >= 305 |
45 /* specify Z, stencil, accum sizes */ | 23 /* specify Z, stencil, accum sizes */ |
46 fContext = (Context)OSMesaCreateContextExt(OSMESA_BGRA, 0, 0, 0, NULL); | 24 fContext = (Context)OSMesaCreateContextExt(OSMESA_BGRA, 0, 0, 0, NULL); |
47 #else | 25 #else |
48 fContext = (Context)OSMesaCreateContext(OSMESA_BGRA, NULL); | 26 fContext = (Context)OSMesaCreateContext(OSMESA_BGRA, NULL); |
49 #endif | 27 #endif |
50 if (!fContext) { | 28 if (!fContext) { |
51 SkDebugf("OSMesaCreateContext failed!\n"); | 29 SkDebugf("OSMesaCreateContext failed!\n"); |
52 this->destroyGLContext(); | 30 this->destroyGLContext(); |
53 return NULL; | 31 return; |
54 } | 32 } |
55 // Allocate the image buffer | 33 // Allocate the image buffer |
56 fImage = (GrGLubyte *) sk_malloc_throw(gBOGUS_SIZE * gBOGUS_SIZE * | 34 fImage = (GrGLubyte *) sk_malloc_throw(gBOGUS_SIZE * gBOGUS_SIZE * |
57 4 * sizeof(GrGLubyte)); | 35 4 * sizeof(GrGLubyte)); |
58 if (!fImage) { | 36 if (!fImage) { |
59 SkDebugf("Alloc image buffer failed!\n"); | 37 SkDebugf("Alloc image buffer failed!\n"); |
60 this->destroyGLContext(); | 38 this->destroyGLContext(); |
61 return NULL; | 39 return; |
62 } | 40 } |
63 | 41 |
64 // Bind the buffer to the context and make it current | 42 // Bind the buffer to the context and make it current |
65 if (!OSMesaMakeCurrent((OSMesaContext)fContext, | 43 if (!OSMesaMakeCurrent((OSMesaContext)fContext, |
66 fImage, | 44 fImage, |
67 GR_GL_UNSIGNED_BYTE, | 45 GR_GL_UNSIGNED_BYTE, |
68 gBOGUS_SIZE, | 46 gBOGUS_SIZE, |
69 gBOGUS_SIZE)) { | 47 gBOGUS_SIZE)) { |
70 SkDebugf("OSMesaMakeCurrent failed!\n"); | 48 SkDebugf("OSMesaMakeCurrent failed!\n"); |
71 this->destroyGLContext(); | 49 this->destroyGLContext(); |
72 return NULL; | 50 return; |
73 } | 51 } |
74 | 52 |
75 const GrGLInterface* interface = GrGLCreateMesaInterface(); | 53 fGL.reset(GrGLCreateMesaInterface()); |
76 if (!interface) { | 54 if (NULL == fGL.get()) { |
77 SkDebugf("Could not create GL interface!\n"); | 55 SkDebugf("Could not create GL interface!\n"); |
78 this->destroyGLContext(); | 56 this->destroyGLContext(); |
79 return NULL; | 57 return; |
80 } | 58 } |
81 return interface; | |
82 | 59 |
| 60 if (!fGL->validate()) { |
| 61 SkDebugf("Could not validate GL interface!\n"); |
| 62 this->destroyGLContext(); |
| 63 return; |
| 64 } |
83 } | 65 } |
84 | 66 |
| 67 SkMesaGLContext::~SkMesaGLContext() { |
| 68 this->destroyGLContext(); |
| 69 } |
| 70 |
| 71 void SkMesaGLContext::destroyGLContext() { |
| 72 fGL.reset(NULL); |
| 73 if (fImage) { |
| 74 sk_free(fImage); |
| 75 fImage = NULL; |
| 76 } |
| 77 |
| 78 if (fContext) { |
| 79 OSMesaDestroyContext((OSMesaContext)fContext); |
| 80 fContext = static_cast<Context>(NULL); |
| 81 } |
| 82 } |
| 83 |
| 84 |
| 85 |
85 void SkMesaGLContext::makeCurrent() const { | 86 void SkMesaGLContext::makeCurrent() const { |
86 if (fContext) { | 87 if (fContext) { |
87 if (!OSMesaMakeCurrent((OSMesaContext)fContext, fImage, | 88 if (!OSMesaMakeCurrent((OSMesaContext)fContext, fImage, |
88 GR_GL_UNSIGNED_BYTE, gBOGUS_SIZE, gBOGUS_SIZE)) { | 89 GR_GL_UNSIGNED_BYTE, gBOGUS_SIZE, gBOGUS_SIZE)) { |
89 SkDebugf("Could not make MESA context current."); | 90 SkDebugf("Could not make MESA context current."); |
90 } | 91 } |
91 } | 92 } |
92 } | 93 } |
93 | 94 |
94 void SkMesaGLContext::swapBuffers() const { } | 95 void SkMesaGLContext::swapBuffers() const { } |
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