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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 GrDrawState_DEFINED | 8 #ifndef GrDrawState_DEFINED |
9 #define GrDrawState_DEFINED | 9 #define GrDrawState_DEFINED |
10 | 10 |
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72 * the type of the attribute, its offset, and semantic binding (see GrVertex
Attrib in | 72 * the type of the attribute, its offset, and semantic binding (see GrVertex
Attrib in |
73 * GrTypesPriv.h). | 73 * GrTypesPriv.h). |
74 * | 74 * |
75 * The mapping of attributes with kEffect bindings to GrEffect inputs is spe
cified when | 75 * The mapping of attributes with kEffect bindings to GrEffect inputs is spe
cified when |
76 * setEffect is called. | 76 * setEffect is called. |
77 */ | 77 */ |
78 | 78 |
79 /** | 79 /** |
80 * Sets vertex attributes for next draw. The object driving the templatizat
ion | 80 * Sets vertex attributes for next draw. The object driving the templatizat
ion |
81 * should be a global GrVertexAttrib array that is never changed. | 81 * should be a global GrVertexAttrib array that is never changed. |
82 * | |
83 * @param count the number of attributes being set, limited to kMaxVer
texAttribCnt. | |
84 * @param stride the number of bytes between successive vertex data. | |
85 */ | 82 */ |
86 template <const GrVertexAttrib A[]> void setVertexAttribs(int count, size_t
stride) { | 83 template <const GrVertexAttrib A[]> void setVertexAttribs(int count) { |
87 this->internalSetVertexAttribs(A, count, stride); | 84 this->setVertexAttribs(A, count); |
88 } | 85 } |
89 | 86 |
90 /** | 87 /** |
91 * Sets default vertex attributes for next draw. The default is a single at
tribute: | 88 * Sets default vertex attributes for next draw. The default is a single at
tribute: |
92 * {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribType} | 89 * {kVec2f_GrVertexAttribType, 0, kPosition_GrVertexAttribType} |
93 */ | 90 */ |
94 void setDefaultVertexAttribs(); | 91 void setDefaultVertexAttribs(); |
95 | 92 |
96 /** | 93 /** |
97 * Helper to save/restore vertex attribs | 94 * Helper to save/restore vertex attribs |
98 */ | 95 */ |
99 class AutoVertexAttribRestore { | 96 class AutoVertexAttribRestore { |
100 public: | 97 public: |
101 AutoVertexAttribRestore(GrDrawState* drawState); | 98 AutoVertexAttribRestore(GrDrawState* drawState); |
102 | 99 |
103 ~AutoVertexAttribRestore() { fDrawState->internalSetVertexAttribs(fVAPt
r, fVACount, fVAStride); } | 100 ~AutoVertexAttribRestore() { fDrawState->setVertexAttribs(fVAPtr, fVACo
unt); } |
104 | 101 |
105 private: | 102 private: |
106 GrDrawState* fDrawState; | 103 GrDrawState* fDrawState; |
107 const GrVertexAttrib* fVAPtr; | 104 const GrVertexAttrib* fVAPtr; |
108 int fVACount; | 105 int fVACount; |
109 size_t fVAStride; | |
110 }; | 106 }; |
111 | 107 |
112 /// @} | 108 /// @} |
113 | 109 |
114 /** | 110 /** |
115 * Depending on features available in the underlying 3D API and the color bl
end mode requested | 111 * Depending on features available in the underlying 3D API and the color bl
end mode requested |
116 * it may or may not be possible to correctly blend with fractional pixel co
verage generated by | 112 * it may or may not be possible to correctly blend with fractional pixel co
verage generated by |
117 * the fragment shader. | 113 * the fragment shader. |
118 * | 114 * |
119 * This function considers the current draw state and the draw target's capa
bilities to | 115 * This function considers the current draw state and the draw target's capa
bilities to |
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556 void invalidateBlendOptFlags() { | 552 void invalidateBlendOptFlags() { |
557 fBlendOptFlags = kInvalid_BlendOptFlag; | 553 fBlendOptFlags = kInvalid_BlendOptFlag; |
558 } | 554 } |
559 | 555 |
560 uint32_t fHints; | 556 uint32_t fHints; |
561 | 557 |
562 // Some of the auto restore objects assume that no effects are removed durin
g their lifetime. | 558 // Some of the auto restore objects assume that no effects are removed durin
g their lifetime. |
563 // This is used to assert that this condition holds. | 559 // This is used to assert that this condition holds. |
564 SkDEBUGCODE(int fBlockEffectRemovalCnt;) | 560 SkDEBUGCODE(int fBlockEffectRemovalCnt;) |
565 | 561 |
566 void internalSetVertexAttribs(const GrVertexAttrib attribs[], int count, siz
e_t stride); | 562 /** |
| 563 * Sets vertex attributes for next draw. |
| 564 * |
| 565 * @param attribs the array of vertex attributes to set. |
| 566 * @param count the number of attributes being set, limited to kMaxVer
texAttribCnt. |
| 567 */ |
| 568 void setVertexAttribs(const GrVertexAttrib attribs[], int count); |
567 | 569 |
568 typedef GrRODrawState INHERITED; | 570 typedef GrRODrawState INHERITED; |
569 }; | 571 }; |
570 | 572 |
571 #endif | 573 #endif |
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