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Side by Side Diff: include/gpu/GrDrawEffect.h

Issue 24853002: Make GPU coord transforms automatic (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: rebase Created 7 years, 2 months ago
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1 1
2 #ifndef GrDrawEffect_DEFINED 2 #ifndef GrDrawEffect_DEFINED
3 #define GrDrawEffect_DEFINED 3 #define GrDrawEffect_DEFINED
4 4
5 #include "GrEffectStage.h" 5 #include "GrEffectStage.h"
6 6
7 /** 7 /**
8 * This class is used to communicate the particular GrEffect used in a draw to t he backend-specific 8 * This class is used to communicate the particular GrEffect used in a draw to t he backend-specific
9 * effect subclass (e.g. GrGLEffect). It is used to by the backend-specific clas s to generate a 9 * effect subclass (e.g. GrGLEffect). It is used to by the backend-specific clas s to generate a
10 * cache key for the effect, generate code on a program cache miss, and to uploa d uniform values to 10 * cache key for the effect, generate code on a program cache miss, and to uploa d uniform values to
11 * the program. 11 * the program.
12 * In addition to the effect, it also communicates any changes between the relat ionship between 12 * In addition to the effect, it also communicates any changes between the relat ionship between
13 * the view matrix and local coordinate system since the effect was installed in its GrDrawState. 13 * the view matrix and local coordinate system since the effect was installed in its GrDrawState.
14 * The typical use case is that sometime after an effect was installed a decisio n was made to draw 14 * The typical use case is that sometime after an effect was installed a decisio n was made to draw
15 * in device coordinates (i.e. use an identity view-matrix). In such a case the GrDrawEffect's 15 * in device coordinates (i.e. use an identity view-matrix). In such a case the GrDrawEffect's
16 * coord-change-matrix would be the inverse of the view matrix that was set when the effect was 16 * coord-change-matrix would be the inverse of the view matrix that was set when the effect was
17 * installed. GrGLEffectMatrix is a handy class that implements a local coordina te matrix that 17 * installed.
18 * automatically accounts for the coord-change matrix.
19 */ 18 */
20 class GrDrawEffect { 19 class GrDrawEffect {
21 public: 20 public:
22 GrDrawEffect(const GrEffectStage& stage, bool explicitLocalCoords) 21 GrDrawEffect(const GrEffectStage& stage, bool explicitLocalCoords)
23 : fEffectStage(&stage) 22 : fEffectStage(&stage)
24 , fExplicitLocalCoords(explicitLocalCoords) { 23 , fExplicitLocalCoords(explicitLocalCoords) {
25 SkASSERT(NULL != fEffectStage); 24 SkASSERT(NULL != fEffectStage);
26 SkASSERT(NULL != fEffectStage->getEffect()); 25 SkASSERT(NULL != fEffectStage->getEffect());
27 } 26 }
28 const GrEffectRef* effect() const { return fEffectStage->getEffect(); } 27 const GrEffectRef* effect() const { return fEffectStage->getEffect(); }
(...skipping 13 matching lines...) Expand all
42 41
43 const int* getVertexAttribIndices() const { return fEffectStage->getVertexAt tribIndices(); } 42 const int* getVertexAttribIndices() const { return fEffectStage->getVertexAt tribIndices(); }
44 int getVertexAttribIndexCount() const { return fEffectStage->getVertexAttrib IndexCount(); } 43 int getVertexAttribIndexCount() const { return fEffectStage->getVertexAttrib IndexCount(); }
45 44
46 private: 45 private:
47 const GrEffectStage* fEffectStage; 46 const GrEffectStage* fEffectStage;
48 bool fExplicitLocalCoords; 47 bool fExplicitLocalCoords;
49 }; 48 };
50 49
51 #endif 50 #endif
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