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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 | 8 |
9 #include "gl/GrGLInterface.h" | 9 #include "gl/GrGLInterface.h" |
10 #include "GrGLDefines.h" | 10 #include "GrGLDefines.h" |
11 #include "SkTDArray.h" | 11 #include "SkTDArray.h" |
12 #include "GrGLNoOpInterface.h" | 12 #include "GrGLNoOpInterface.h" |
13 #include "SkTLS.h" | 13 #include "SkTLS.h" |
14 | 14 |
15 // TODO: Delete this file after chrome starts using SkNullGLContext. | 15 // TODO: Delete this file after chrome starts using SkNullGLContext. |
16 | 16 |
17 // added to suppress 'no previous prototype' warning and because this code is du
plicated in | 17 // added to suppress 'no previous prototype' warning and because this code is du
plicated in |
18 // SkNullGLContext.cpp | 18 // SkNullGLContext.cpp |
19 namespace { | 19 namespace { |
20 | 20 |
21 class BufferObj { | 21 class BufferObj { |
22 public: | 22 public: |
23 SK_DECLARE_INST_COUNT(BufferObj); | 23 |
24 | 24 |
25 BufferObj(GrGLuint id) : fID(id), fDataPtr(NULL), fSize(0), fMapped(false) { | 25 BufferObj(GrGLuint id) : fID(id), fDataPtr(NULL), fSize(0), fMapped(false) { |
26 } | 26 } |
27 ~BufferObj() { SkDELETE_ARRAY(fDataPtr); } | 27 ~BufferObj() { SkDELETE_ARRAY(fDataPtr); } |
28 | 28 |
29 void allocate(GrGLsizeiptr size, const GrGLchar* dataPtr) { | 29 void allocate(GrGLsizeiptr size, const GrGLchar* dataPtr) { |
30 if (fDataPtr) { | 30 if (fDataPtr) { |
31 SkASSERT(0 != fSize); | 31 SkASSERT(0 != fSize); |
32 SkDELETE_ARRAY(fDataPtr); | 32 SkDELETE_ARRAY(fDataPtr); |
33 } | 33 } |
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46 private: | 46 private: |
47 GrGLuint fID; | 47 GrGLuint fID; |
48 GrGLchar* fDataPtr; | 48 GrGLchar* fDataPtr; |
49 GrGLsizeiptr fSize; // size in bytes | 49 GrGLsizeiptr fSize; // size in bytes |
50 bool fMapped; | 50 bool fMapped; |
51 }; | 51 }; |
52 | 52 |
53 // This class maintains a sparsely populated array of buffer pointers. | 53 // This class maintains a sparsely populated array of buffer pointers. |
54 class BufferManager { | 54 class BufferManager { |
55 public: | 55 public: |
56 SK_DECLARE_INST_COUNT(BufferManager); | 56 |
57 | 57 |
58 BufferManager() : fFreeListHead(kFreeListEnd) {} | 58 BufferManager() : fFreeListHead(kFreeListEnd) {} |
59 | 59 |
60 ~BufferManager() { | 60 ~BufferManager() { |
61 // NULL out the entries that are really free list links rather than ptrs
before deleting. | 61 // NULL out the entries that are really free list links rather than ptrs
before deleting. |
62 intptr_t curr = fFreeListHead; | 62 intptr_t curr = fFreeListHead; |
63 while (kFreeListEnd != curr) { | 63 while (kFreeListEnd != curr) { |
64 intptr_t next = reinterpret_cast<intptr_t>(fBuffers[SkToS32(curr)]); | 64 intptr_t next = reinterpret_cast<intptr_t>(fBuffers[SkToS32(curr)]); |
65 fBuffers[SkToS32(curr)] = NULL; | 65 fBuffers[SkToS32(curr)] = NULL; |
66 curr = next; | 66 curr = next; |
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115 }; | 115 }; |
116 | 116 |
117 /** | 117 /** |
118 * The global-to-thread state object for the null interface. All null interfaces
on the | 118 * The global-to-thread state object for the null interface. All null interfaces
on the |
119 * same thread currently share one of these. This means two null contexts on the
same thread | 119 * same thread currently share one of these. This means two null contexts on the
same thread |
120 * can interfere with each other. It may make sense to more integrate this into
SkNullGLContext | 120 * can interfere with each other. It may make sense to more integrate this into
SkNullGLContext |
121 * and use it's makeCurrent mechanism. | 121 * and use it's makeCurrent mechanism. |
122 */ | 122 */ |
123 struct ThreadContext { | 123 struct ThreadContext { |
124 public: | 124 public: |
125 SK_DECLARE_INST_COUNT(ThreadContext); | 125 |
126 | 126 |
127 BufferManager fBufferManager; | 127 BufferManager fBufferManager; |
128 GrGLuint fCurrArrayBuffer; | 128 GrGLuint fCurrArrayBuffer; |
129 GrGLuint fCurrElementArrayBuffer; | 129 GrGLuint fCurrElementArrayBuffer; |
130 GrGLuint fCurrProgramID; | 130 GrGLuint fCurrProgramID; |
131 GrGLuint fCurrShaderID; | 131 GrGLuint fCurrShaderID; |
132 | 132 |
133 static ThreadContext* Get() { | 133 static ThreadContext* Get() { |
134 return reinterpret_cast<ThreadContext*>(SkTLS::Get(Create, Delete)); | 134 return reinterpret_cast<ThreadContext*>(SkTLS::Get(Create, Delete)); |
135 } | 135 } |
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484 functions->fBlitFramebuffer = noOpGLBlitFramebuffer; | 484 functions->fBlitFramebuffer = noOpGLBlitFramebuffer; |
485 functions->fResolveMultisampleFramebuffer = noOpGLResolveMultisampleFramebuf
fer; | 485 functions->fResolveMultisampleFramebuffer = noOpGLResolveMultisampleFramebuf
fer; |
486 functions->fMatrixLoadf = noOpGLMatrixLoadf; | 486 functions->fMatrixLoadf = noOpGLMatrixLoadf; |
487 functions->fMatrixLoadIdentity = noOpGLMatrixLoadIdentity; | 487 functions->fMatrixLoadIdentity = noOpGLMatrixLoadIdentity; |
488 functions->fBindFragDataLocationIndexed = noOpGLBindFragDataLocationIndexed; | 488 functions->fBindFragDataLocationIndexed = noOpGLBindFragDataLocationIndexed; |
489 | 489 |
490 interface->fExtensions.init(kGL_GrGLStandard, functions->fGetString, functio
ns->fGetStringi, | 490 interface->fExtensions.init(kGL_GrGLStandard, functions->fGetString, functio
ns->fGetStringi, |
491 functions->fGetIntegerv); | 491 functions->fGetIntegerv); |
492 return interface; | 492 return interface; |
493 } | 493 } |
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