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1 /* | 1 /* |
2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef GrGLInterface_DEFINED | 8 #ifndef GrGLInterface_DEFINED |
9 #define GrGLInterface_DEFINED | 9 #define GrGLInterface_DEFINED |
10 | 10 |
11 #include "GrGLFunctions.h" | 11 #include "GrGLFunctions.h" |
| 12 #include "GrGLExtensions.h" |
12 #include "SkRefCnt.h" | 13 #include "SkRefCnt.h" |
13 | 14 |
14 //////////////////////////////////////////////////////////////////////////////// | 15 //////////////////////////////////////////////////////////////////////////////// |
15 | 16 |
16 /** | 17 /** |
17 * Classifies GL contexts by which standard they implement (currently as Desktop | |
18 * vs. ES). | |
19 */ | |
20 enum GrGLStandard { | |
21 kNone_GrGLStandard, | |
22 kGL_GrGLStandard, | |
23 kGLES_GrGLStandard, | |
24 }; | |
25 | |
26 // Temporary aliases until Chromium can be updated. | |
27 typedef GrGLStandard GrGLBinding; | |
28 static const GrGLStandard kES2_GrGLBinding = kGLES_GrGLStandard; | |
29 static const GrGLStandard kDesktop_GrGLBinding = kGL_GrGLStandard; | |
30 | |
31 //////////////////////////////////////////////////////////////////////////////// | |
32 | |
33 /** | |
34 * Rather than depend on platform-specific GL headers and libraries, we require | 18 * Rather than depend on platform-specific GL headers and libraries, we require |
35 * the client to provide a struct of GL function pointers. This struct can be | 19 * the client to provide a struct of GL function pointers. This struct can be |
36 * specified per-GrContext as a parameter to GrContext::Create. If NULL is | 20 * specified per-GrContext as a parameter to GrContext::Create. If NULL is |
37 * passed to Create then a "default" GL interface is created. If the default is | 21 * passed to Create then a "default" GL interface is created. If the default is |
38 * also NULL GrContext creation will fail. | 22 * also NULL GrContext creation will fail. |
39 * | 23 * |
40 * The default interface is returned by GrGLDefaultInterface. This function's | 24 * The default interface is returned by GrGLDefaultInterface. This function's |
41 * implementation is platform-specific. Several have been provided, along with | 25 * implementation is platform-specific. Several have been provided, along with |
42 * an implementation that simply returns NULL. | 26 * an implementation that simply returns NULL. |
43 * | 27 * |
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122 // function pointers have been initialized for both the GL version and any a
dvertised | 106 // function pointers have been initialized for both the GL version and any a
dvertised |
123 // extensions. | 107 // extensions. |
124 bool validate() const; | 108 bool validate() const; |
125 | 109 |
126 // Indicates the type of GL implementation | 110 // Indicates the type of GL implementation |
127 union { | 111 union { |
128 GrGLStandard fStandard; | 112 GrGLStandard fStandard; |
129 GrGLStandard fBindingsExported; // Legacy name, will be remove when Chro
mium is updated. | 113 GrGLStandard fBindingsExported; // Legacy name, will be remove when Chro
mium is updated. |
130 }; | 114 }; |
131 | 115 |
| 116 GrGLExtensions fExtensions; |
| 117 |
| 118 // This wrapper and const hackery is necessary because the factories in Chro
mium do not yet |
| 119 // initialize fExtensions. |
| 120 bool hasExtension(const char ext[]) const { |
| 121 if (!fExtensions.isInitialized()) { |
| 122 GrGLExtensions* extensions = const_cast<GrGLExtensions*>(&fExtension
s); |
| 123 if (!extensions->init(fStandard, fGetString, fGetStringi, fGetIntege
rv)) { |
| 124 return false; |
| 125 } |
| 126 } |
| 127 return fExtensions.has(ext); |
| 128 } |
| 129 |
132 GLPtr<GrGLActiveTextureProc> fActiveTexture; | 130 GLPtr<GrGLActiveTextureProc> fActiveTexture; |
133 GLPtr<GrGLAttachShaderProc> fAttachShader; | 131 GLPtr<GrGLAttachShaderProc> fAttachShader; |
134 GLPtr<GrGLBeginQueryProc> fBeginQuery; | 132 GLPtr<GrGLBeginQueryProc> fBeginQuery; |
135 GLPtr<GrGLBindAttribLocationProc> fBindAttribLocation; | 133 GLPtr<GrGLBindAttribLocationProc> fBindAttribLocation; |
136 GLPtr<GrGLBindBufferProc> fBindBuffer; | 134 GLPtr<GrGLBindBufferProc> fBindBuffer; |
137 GLPtr<GrGLBindFragDataLocationProc> fBindFragDataLocation; | 135 GLPtr<GrGLBindFragDataLocationProc> fBindFragDataLocation; |
138 GLPtr<GrGLBindFragDataLocationIndexedProc> fBindFragDataLocationIndexed; | 136 GLPtr<GrGLBindFragDataLocationIndexedProc> fBindFragDataLocationIndexed; |
139 GLPtr<GrGLBindFramebufferProc> fBindFramebuffer; | 137 GLPtr<GrGLBindFramebufferProc> fBindFramebuffer; |
140 GLPtr<GrGLBindRenderbufferProc> fBindRenderbuffer; | 138 GLPtr<GrGLBindRenderbufferProc> fBindRenderbuffer; |
141 GLPtr<GrGLBindTextureProc> fBindTexture; | 139 GLPtr<GrGLBindTextureProc> fBindTexture; |
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345 | 343 |
346 // Per-GL func callback | 344 // Per-GL func callback |
347 #if GR_GL_PER_GL_FUNC_CALLBACK | 345 #if GR_GL_PER_GL_FUNC_CALLBACK |
348 GrGLInterfaceCallbackProc fCallback; | 346 GrGLInterfaceCallbackProc fCallback; |
349 GrGLInterfaceCallbackData fCallbackData; | 347 GrGLInterfaceCallbackData fCallbackData; |
350 #endif | 348 #endif |
351 | 349 |
352 }; | 350 }; |
353 | 351 |
354 #endif | 352 #endif |
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