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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 GrCoordTransform_DEFINED | 8 #ifndef GrCoordTransform_DEFINED |
9 #define GrCoordTransform_DEFINED | 9 #define GrCoordTransform_DEFINED |
10 | 10 |
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57 * coord convention. | 57 * coord convention. |
58 */ | 58 */ |
59 GrCoordTransform(GrCoordSet sourceCoords, const SkMatrix& m, const GrTexture
* texture = NULL) { | 59 GrCoordTransform(GrCoordSet sourceCoords, const SkMatrix& m, const GrTexture
* texture = NULL) { |
60 SkDEBUGCODE(fInEffect = false); | 60 SkDEBUGCODE(fInEffect = false); |
61 this->reset(sourceCoords, m, texture); | 61 this->reset(sourceCoords, m, texture); |
62 } | 62 } |
63 | 63 |
64 void reset(GrCoordSet sourceCoords, const GrTexture* texture) { | 64 void reset(GrCoordSet sourceCoords, const GrTexture* texture) { |
65 SkASSERT(!fInEffect); | 65 SkASSERT(!fInEffect); |
66 SkASSERT(NULL != texture); | 66 SkASSERT(NULL != texture); |
67 this->reset(sourceCoords, GrEffect::MakeDivByTextureWHMatrix(texture), t
exture); | 67 this->reset(sourceCoords, MakeDivByTextureWHMatrix(texture), texture); |
68 } | 68 } |
69 | 69 |
70 void reset(GrCoordSet sourceCoords, const SkMatrix& m, const GrTexture* text
ure = NULL) { | 70 void reset(GrCoordSet sourceCoords, const SkMatrix& m, const GrTexture* text
ure = NULL) { |
71 SkASSERT(!fInEffect); | 71 SkASSERT(!fInEffect); |
72 fSourceCoords = sourceCoords; | 72 fSourceCoords = sourceCoords; |
73 fMatrix = m; | 73 fMatrix = m; |
74 fReverseY = NULL != texture && kBottomLeft_GrSurfaceOrigin == texture->o
rigin(); | 74 fReverseY = NULL != texture && kBottomLeft_GrSurfaceOrigin == texture->o
rigin(); |
75 } | 75 } |
76 | 76 |
77 GrCoordTransform& operator= (const GrCoordTransform& other) { | 77 GrCoordTransform& operator= (const GrCoordTransform& other) { |
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94 bool operator== (const GrCoordTransform& other) const { | 94 bool operator== (const GrCoordTransform& other) const { |
95 return fSourceCoords == other.fSourceCoords && | 95 return fSourceCoords == other.fSourceCoords && |
96 fMatrix.cheapEqualTo(other.fMatrix) && | 96 fMatrix.cheapEqualTo(other.fMatrix) && |
97 fReverseY == other.fReverseY; | 97 fReverseY == other.fReverseY; |
98 } | 98 } |
99 | 99 |
100 GrCoordSet sourceCoords() const { return fSourceCoords; } | 100 GrCoordSet sourceCoords() const { return fSourceCoords; } |
101 const SkMatrix& getMatrix() const { return fMatrix; } | 101 const SkMatrix& getMatrix() const { return fMatrix; } |
102 bool reverseY() const { return fReverseY; } | 102 bool reverseY() const { return fReverseY; } |
103 | 103 |
| 104 /** Useful for effects that want to insert a texture matrix that is implied
by the texture |
| 105 dimensions */ |
| 106 static inline SkMatrix MakeDivByTextureWHMatrix(const GrTexture* texture) { |
| 107 SkASSERT(NULL != texture); |
| 108 SkMatrix mat; |
| 109 mat.setIDiv(texture->width(), texture->height()); |
| 110 return mat; |
| 111 } |
| 112 |
104 private: | 113 private: |
105 GrCoordSet fSourceCoords; | 114 GrCoordSet fSourceCoords; |
106 SkMatrix fMatrix; | 115 SkMatrix fMatrix; |
107 bool fReverseY; | 116 bool fReverseY; |
108 | 117 |
109 typedef SkNoncopyable INHERITED; | 118 typedef SkNoncopyable INHERITED; |
110 | 119 |
111 #ifdef SK_DEBUG | 120 #ifdef SK_DEBUG |
112 public: | 121 public: |
113 void setInEffect() const { fInEffect = true; } | 122 void setInEffect() const { fInEffect = true; } |
114 private: | 123 private: |
115 mutable bool fInEffect; | 124 mutable bool fInEffect; |
116 #endif | 125 #endif |
117 }; | 126 }; |
118 | 127 |
119 #endif | 128 #endif |
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