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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 GrGLVertexArray_DEFINED | 8 #ifndef GrGLVertexArray_DEFINED |
9 #define GrGLVertexArray_DEFINED | 9 #define GrGLVertexArray_DEFINED |
10 | 10 |
11 #include "GrTypesPriv.h" | 11 #include "GrTypesPriv.h" |
12 #include "gl/GrGLDefines.h" | 12 #include "gl/GrGLDefines.h" |
13 #include "gl/GrGLTypes.h" | 13 #include "gl/GrGLTypes.h" |
14 #include "SkTArray.h" | 14 #include "SkTArray.h" |
15 | 15 |
16 class GrGLVertexBuffer; | 16 class GrGLVertexBuffer; |
17 class GrGLIndexBuffer; | 17 class GrGLIndexBuffer; |
18 class GrGLGpu; | 18 class GrGLGpu; |
19 | 19 |
20 struct GrGLAttribLayout { | |
21 GrGLint fCount; | |
22 GrGLenum fType; | |
23 GrGLboolean fNormalized; | |
24 }; | |
25 | |
26 static inline const GrGLAttribLayout& GrGLAttribTypeToLayout(GrVertexAttribType
type) { | |
27 static const GrGLAttribLayout kLayouts[kGrVertexAttribTypeCount] = { | |
28 {1, GR_GL_FLOAT, false}, // kFloat_GrVertexAttribType | |
29 {2, GR_GL_FLOAT, false}, // kVec2f_GrVertexAttribType | |
30 {3, GR_GL_FLOAT, false}, // kVec3f_GrVertexAttribType | |
31 {4, GR_GL_FLOAT, false}, // kVec4f_GrVertexAttribType | |
32 {1, GR_GL_UNSIGNED_BYTE, true}, // kUByte_GrVertexAttribType | |
33 {4, GR_GL_UNSIGNED_BYTE, true}, // kVec4ub_GrVertexAttribType | |
34 {2, GR_GL_SHORT, false}, // kVec2s_GrVertexAttribType | |
35 {4, GR_GL_INT, false}, // kInt_GrVertexAttribType | |
36 }; | |
37 GR_STATIC_ASSERT(0 == kFloat_GrVertexAttribType); | |
38 GR_STATIC_ASSERT(1 == kVec2f_GrVertexAttribType); | |
39 GR_STATIC_ASSERT(2 == kVec3f_GrVertexAttribType); | |
40 GR_STATIC_ASSERT(3 == kVec4f_GrVertexAttribType); | |
41 GR_STATIC_ASSERT(4 == kUByte_GrVertexAttribType); | |
42 GR_STATIC_ASSERT(5 == kVec4ub_GrVertexAttribType); | |
43 GR_STATIC_ASSERT(6 == kVec2s_GrVertexAttribType); | |
44 GR_STATIC_ASSERT(7 == kInt_GrVertexAttribType); | |
45 GR_STATIC_ASSERT(SK_ARRAY_COUNT(kLayouts) == kGrVertexAttribTypeCount); | |
46 return kLayouts[type]; | |
47 } | |
48 | |
49 /** | 20 /** |
50 * This sets and tracks the vertex attribute array state. It is used internally
by GrGLVertexArray | 21 * This sets and tracks the vertex attribute array state. It is used internally
by GrGLVertexArray |
51 * (below) but is separate because it is also used to track the state of vertex
array object 0. | 22 * (below) but is separate because it is also used to track the state of vertex
array object 0. |
52 */ | 23 */ |
53 class GrGLAttribArrayState { | 24 class GrGLAttribArrayState { |
54 public: | 25 public: |
55 explicit GrGLAttribArrayState(int arrayCount = 0) { | 26 explicit GrGLAttribArrayState(int arrayCount = 0) { |
56 this->resize(arrayCount); | 27 this->resize(arrayCount); |
57 } | 28 } |
58 | 29 |
59 void resize(int newCount) { | 30 void resize(int newCount) { |
60 fAttribArrayStates.resize_back(newCount); | 31 fAttribArrayStates.resize_back(newCount); |
61 for (int i = 0; i < newCount; ++i) { | 32 for (int i = 0; i < newCount; ++i) { |
62 fAttribArrayStates[i].invalidate(); | 33 fAttribArrayStates[i].invalidate(); |
63 } | 34 } |
64 } | 35 } |
65 | 36 |
66 /** | 37 /** |
67 * This function enables and sets vertex attrib state for the specified attr
ib index. It is | 38 * This function enables and sets vertex attrib state for the specified attr
ib index. It is |
68 * assumed that the GrGLAttribArrayState is tracking the state of the curren
tly bound vertex | 39 * assumed that the GrGLAttribArrayState is tracking the state of the curren
tly bound vertex |
69 * array object. | 40 * array object. |
70 */ | 41 */ |
71 void set(GrGLGpu*, | 42 void set(GrGLGpu*, |
72 int attribIndex, | 43 int attribIndex, |
73 GrGLuint vertexBufferID, | 44 GrGLuint vertexBufferID, |
74 GrGLint size, | 45 GrVertexAttribType type, |
75 GrGLenum type, | |
76 GrGLboolean normalized, | |
77 GrGLsizei stride, | 46 GrGLsizei stride, |
78 GrGLvoid* offset); | 47 GrGLvoid* offset); |
79 | 48 |
80 /** | 49 /** |
81 * This function disables vertex attribs not present in the mask. It is assu
med that the | 50 * This function disables vertex attribs not present in the mask. It is assu
med that the |
82 * GrGLAttribArrayState is tracking the state of the currently bound vertex
array object. | 51 * GrGLAttribArrayState is tracking the state of the currently bound vertex
array object. |
83 */ | 52 */ |
84 void disableUnusedArrays(const GrGLGpu*, uint64_t usedAttribArrayMask); | 53 void disableUnusedArrays(const GrGLGpu*, uint64_t usedAttribArrayMask); |
85 | 54 |
86 void invalidate() { | 55 void invalidate() { |
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108 private: | 77 private: |
109 /** | 78 /** |
110 * Tracks the state of glVertexAttribArray for an attribute index. | 79 * Tracks the state of glVertexAttribArray for an attribute index. |
111 */ | 80 */ |
112 struct AttribArrayState { | 81 struct AttribArrayState { |
113 void invalidate() { | 82 void invalidate() { |
114 fEnableIsValid = false; | 83 fEnableIsValid = false; |
115 fAttribPointerIsValid = false; | 84 fAttribPointerIsValid = false; |
116 } | 85 } |
117 | 86 |
118 bool fEnableIsValid; | 87 bool fEnableIsValid; |
119 bool fAttribPointerIsValid; | 88 bool fAttribPointerIsValid; |
120 bool fEnabled; | 89 bool fEnabled; |
121 GrGLuint fVertexBufferID; | 90 GrGLuint fVertexBufferID; |
122 GrGLint fSize; | 91 GrVertexAttribType fType; |
123 GrGLenum fType; | 92 GrGLsizei fStride; |
124 GrGLboolean fNormalized; | 93 GrGLvoid* fOffset; |
125 GrGLsizei fStride; | |
126 GrGLvoid* fOffset; | |
127 }; | 94 }; |
128 | 95 |
129 SkSTArray<16, AttribArrayState, true> fAttribArrayStates; | 96 SkSTArray<16, AttribArrayState, true> fAttribArrayStates; |
130 }; | 97 }; |
131 | 98 |
132 /** | 99 /** |
133 * This class represents an OpenGL vertex array object. It manages the lifetime
of the vertex array | 100 * This class represents an OpenGL vertex array object. It manages the lifetime
of the vertex array |
134 * and is used to track the state of the vertex array to avoid redundant GL call
s. | 101 * and is used to track the state of the vertex array to avoid redundant GL call
s. |
135 */ | 102 */ |
136 class GrGLVertexArray { | 103 class GrGLVertexArray { |
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161 void invalidateCachedState(); | 128 void invalidateCachedState(); |
162 | 129 |
163 private: | 130 private: |
164 GrGLuint fID; | 131 GrGLuint fID; |
165 GrGLAttribArrayState fAttribArrays; | 132 GrGLAttribArrayState fAttribArrays; |
166 GrGLuint fIndexBufferID; | 133 GrGLuint fIndexBufferID; |
167 bool fIndexBufferIDIsValid; | 134 bool fIndexBufferIDIsValid; |
168 }; | 135 }; |
169 | 136 |
170 #endif | 137 #endif |
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