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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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