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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 GrConvexPolyEffect_DEFINED | 8 #ifndef GrConvexPolyEffect_DEFINED |
9 #define GrConvexPolyEffect_DEFINED | 9 #define GrConvexPolyEffect_DEFINED |
10 | 10 |
11 #include "GrDrawTargetCaps.h" | 11 #include "GrDrawTargetCaps.h" |
| 12 #include "GrFragmentProcessor.h" |
12 #include "GrProcessor.h" | 13 #include "GrProcessor.h" |
13 #include "GrTypesPriv.h" | 14 #include "GrTypesPriv.h" |
14 | 15 |
15 class GrGLConvexPolyEffect; | |
16 class GrInvariantOutput; | 16 class GrInvariantOutput; |
17 class SkPath; | 17 class SkPath; |
18 | 18 |
19 /** | 19 /** |
20 * An effect that renders a convex polygon. It is intended to be used as a cover
age effect. | 20 * An effect that renders a convex polygon. It is intended to be used as a cover
age effect. |
21 * Bounding geometry is rendered and the effect computes coverage based on the f
ragment's | 21 * Bounding geometry is rendered and the effect computes coverage based on the f
ragment's |
22 * position relative to the polygon. | 22 * position relative to the polygon. |
23 */ | 23 */ |
24 class GrConvexPolyEffect : public GrFragmentProcessor { | 24 class GrConvexPolyEffect : public GrFragmentProcessor { |
25 public: | 25 public: |
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54 static GrFragmentProcessor* Create(GrPrimitiveEdgeType, const SkPath&, | 54 static GrFragmentProcessor* Create(GrPrimitiveEdgeType, const SkPath&, |
55 const SkVector* offset = NULL); | 55 const SkVector* offset = NULL); |
56 | 56 |
57 /** | 57 /** |
58 * Creates an effect that fills inside the rect with AA edges.. | 58 * Creates an effect that fills inside the rect with AA edges.. |
59 */ | 59 */ |
60 static GrFragmentProcessor* Create(GrPrimitiveEdgeType, const SkRect&); | 60 static GrFragmentProcessor* Create(GrPrimitiveEdgeType, const SkRect&); |
61 | 61 |
62 virtual ~GrConvexPolyEffect(); | 62 virtual ~GrConvexPolyEffect(); |
63 | 63 |
64 static const char* Name() { return "ConvexPoly"; } | 64 virtual const char* name() const SK_OVERRIDE { return "ConvexPoly"; } |
65 | 65 |
66 GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; } | 66 GrPrimitiveEdgeType getEdgeType() const { return fEdgeType; } |
67 | 67 |
68 int getEdgeCount() const { return fEdgeCount; } | 68 int getEdgeCount() const { return fEdgeCount; } |
69 | 69 |
70 const SkScalar* getEdges() const { return fEdges; } | 70 const SkScalar* getEdges() const { return fEdges; } |
71 | 71 |
72 typedef GrGLConvexPolyEffect GLProcessor; | 72 virtual void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) cons
t SK_OVERRIDE; |
73 | 73 |
74 virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERR
IDE; | 74 virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE; |
75 | 75 |
76 private: | 76 private: |
77 GrConvexPolyEffect(GrPrimitiveEdgeType edgeType, int n, const SkScalar edges
[]); | 77 GrConvexPolyEffect(GrPrimitiveEdgeType edgeType, int n, const SkScalar edges
[]); |
78 | 78 |
79 virtual bool onIsEqual(const GrFragmentProcessor& other) const SK_OVERRIDE; | 79 virtual bool onIsEqual(const GrFragmentProcessor& other) const SK_OVERRIDE; |
80 | 80 |
81 virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVE
RRIDE; | 81 virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVE
RRIDE; |
82 | 82 |
83 GrPrimitiveEdgeType fEdgeType; | 83 GrPrimitiveEdgeType fEdgeType; |
84 int fEdgeCount; | 84 int fEdgeCount; |
85 SkScalar fEdges[3 * kMaxEdges]; | 85 SkScalar fEdges[3 * kMaxEdges]; |
86 | 86 |
87 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 87 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
88 | 88 |
89 typedef GrFragmentProcessor INHERITED; | 89 typedef GrFragmentProcessor INHERITED; |
90 }; | 90 }; |
91 | 91 |
92 | 92 |
93 #endif | 93 #endif |
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