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1 /* | 1 /* |
2 * Copyright (C) 2009 Apple Inc. All rights reserved. | 2 * Copyright (C) 2009 Apple Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * 1. Redistributions of source code must retain the above copyright | 7 * 1. Redistributions of source code must retain the above copyright |
8 * notice, this list of conditions and the following disclaimer. | 8 * notice, this list of conditions and the following disclaimer. |
9 * 2. Redistributions in binary form must reproduce the above copyright | 9 * 2. Redistributions in binary form must reproduce the above copyright |
10 * notice, this list of conditions and the following disclaimer in the | 10 * notice, this list of conditions and the following disclaimer in the |
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22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 | 25 |
26 #ifndef WebGLProgram_h | 26 #ifndef WebGLProgram_h |
27 #define WebGLProgram_h | 27 #define WebGLProgram_h |
28 | 28 |
29 #include "bindings/v8/ScriptWrappable.h" | 29 #include "bindings/v8/ScriptWrappable.h" |
30 #include "core/html/canvas/WebGLSharedObject.h" | 30 #include "core/html/canvas/WebGLSharedObject.h" |
31 #include "core/html/canvas/WebGLShader.h" | 31 #include "core/html/canvas/WebGLShader.h" |
| 32 #include "wtf/HashMap.h" |
32 #include "wtf/PassRefPtr.h" | 33 #include "wtf/PassRefPtr.h" |
33 #include "wtf/RefCounted.h" | 34 #include "wtf/RefCounted.h" |
34 #include "wtf/Vector.h" | 35 #include "wtf/Vector.h" |
35 | 36 |
36 namespace WebCore { | 37 namespace WebCore { |
37 | 38 |
38 class WebGLProgram : public WebGLSharedObject, public ScriptWrappable { | 39 class WebGLProgram : public WebGLSharedObject, public ScriptWrappable { |
39 public: | 40 public: |
| 41 struct SamplerInfo { |
| 42 SamplerInfo(GC3Denum type, GC3Dint nextLocation) |
| 43 : type(type) |
| 44 , unit(0) |
| 45 , nextLocation(nextLocation) |
| 46 { |
| 47 } |
| 48 SamplerInfo() |
| 49 : type(0) |
| 50 , unit(-1) |
| 51 , nextLocation(-1) |
| 52 { |
| 53 } |
| 54 GC3Denum type; |
| 55 GC3Dint unit; |
| 56 GC3Dint nextLocation; |
| 57 }; |
| 58 typedef HashMap<GC3Dint, SamplerInfo> SamplerTextureUnitMap; |
| 59 |
40 virtual ~WebGLProgram(); | 60 virtual ~WebGLProgram(); |
41 | 61 |
42 static PassRefPtr<WebGLProgram> create(WebGLRenderingContext*); | 62 static PassRefPtr<WebGLProgram> create(WebGLRenderingContext*); |
43 | 63 |
44 unsigned numActiveAttribLocations(); | 64 unsigned numActiveAttribLocations(WebGLRenderingContext*); |
45 GC3Dint getActiveAttribLocation(GC3Duint index); | 65 GC3Dint getActiveAttribLocation(WebGLRenderingContext*, GC3Duint index); |
46 | 66 |
47 bool isUsingVertexAttrib0(); | 67 bool isUsingVertexAttrib0(WebGLRenderingContext*); |
48 | 68 |
49 bool getLinkStatus(); | 69 bool getLinkStatus(WebGLRenderingContext*); |
50 void setLinkStatus(bool); | 70 void setLinkStatus(WebGLRenderingContext*, bool); |
51 | 71 |
52 unsigned getLinkCount() const { return m_linkCount; } | 72 unsigned getLinkCount() const { return m_linkCount; } |
53 | 73 |
54 // This is to be called everytime after the program is successfully linked. | 74 // This is to be called everytime after the program is successfully linked. |
55 // We don't deal with integer overflow here, assuming in reality a program | 75 // We don't deal with integer overflow here, assuming in reality a program |
56 // will never be linked so many times. | 76 // will never be linked so many times. |
57 // Also, we invalidate the cached program info. | 77 // Also, we invalidate the cached program info. |
58 void increaseLinkCount(); | 78 void increaseLinkCount(); |
59 | 79 |
60 WebGLShader* getAttachedShader(GC3Denum); | 80 WebGLShader* getAttachedShader(GC3Denum); |
61 bool attachShader(WebGLShader*); | 81 bool attachShader(WebGLShader*); |
62 bool detachShader(WebGLShader*); | 82 bool detachShader(WebGLShader*); |
63 | 83 |
| 84 void conditionallyRecordTextureUnitsAssignedToSamplers(WebGLRenderingContext
*, GC3Dint, GC3Dsizei, const GC3Dint*); |
| 85 const SamplerTextureUnitMap& samplerLocationTextureUnitMap() const |
| 86 { |
| 87 return m_samplerLocationToTextureUnit; |
| 88 } |
| 89 |
64 protected: | 90 protected: |
65 WebGLProgram(WebGLRenderingContext*); | 91 WebGLProgram(WebGLRenderingContext*); |
66 | 92 |
67 virtual void deleteObjectImpl(GraphicsContext3D*, Platform3DObject); | 93 virtual void deleteObjectImpl(GraphicsContext3D*, Platform3DObject); |
68 | 94 |
69 private: | 95 private: |
70 virtual bool isProgram() const { return true; } | 96 virtual bool isProgram() const { return true; } |
| 97 virtual const char* typeName() const { return "WebGLProgram"; } |
71 | 98 |
72 void cacheActiveAttribLocations(GraphicsContext3D*); | 99 void cacheActiveAttribLocations(GraphicsContext3D*); |
73 void cacheInfoIfNeeded(); | 100 void cacheSamplerLocations(GraphicsContext3D*); |
| 101 void cacheInfoIfNeeded(WebGLRenderingContext*); |
74 | 102 |
75 Vector<GC3Dint> m_activeAttribLocations; | 103 Vector<GC3Dint> m_activeAttribLocations; |
76 | 104 |
| 105 // This is a map of every uniform location that corresponds to a uniform sam
pler to some information |
| 106 // about that uniform including the type of uniform and what value it's set
to (what texture unit it |
| 107 // is referring to. If the uniform is an element of an array it's nextLocati
on field is the location of |
| 108 // the next element of the array. |
| 109 SamplerTextureUnitMap m_samplerLocationToTextureUnit; |
| 110 |
77 GC3Dint m_linkStatus; | 111 GC3Dint m_linkStatus; |
78 | 112 |
79 // This is used to track whether a WebGLUniformLocation belongs to this | 113 // This is used to track whether a WebGLUniformLocation belongs to this |
80 // program or not. | 114 // program or not. |
81 unsigned m_linkCount; | 115 unsigned m_linkCount; |
82 | 116 |
83 RefPtr<WebGLShader> m_vertexShader; | 117 RefPtr<WebGLShader> m_vertexShader; |
84 RefPtr<WebGLShader> m_fragmentShader; | 118 RefPtr<WebGLShader> m_fragmentShader; |
85 | 119 |
86 bool m_infoValid; | 120 bool m_infoValid; |
87 }; | 121 }; |
88 | 122 |
89 } // namespace WebCore | 123 } // namespace WebCore |
90 | 124 |
91 #endif // WebGLProgram_h | 125 #endif // WebGLProgram_h |
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