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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 GrDistanceFieldTextureEffect_DEFINED | 8 #ifndef GrDistanceFieldTextureEffect_DEFINED |
9 #define GrDistanceFieldTextureEffect_DEFINED | 9 #define GrDistanceFieldTextureEffect_DEFINED |
10 | 10 |
11 #include "GrEffect.h" | 11 #include "GrEffect.h" |
12 #include "GrVertexEffect.h" | 12 #include "GrVertexEffect.h" |
13 | 13 |
14 class GrGLDistanceFieldTextureEffect; | 14 class GrGLDistanceFieldTextureEffect; |
15 class GrGLDistanceFieldLCDTextureEffect; | 15 class GrGLDistanceFieldLCDTextureEffect; |
16 | 16 |
| 17 enum GrDistanceFieldEffectFlags { |
| 18 kSimilarity_DistanceFieldEffectFlag = 0x01, // ctm is similarity matrix |
| 19 kRectToRect_DistanceFieldEffectFlag = 0x02, // ctm maps rects to rects |
| 20 kUseLCD_DistanceFieldEffectFlag = 0x04, // use lcd text |
| 21 kBGR_DistanceFieldEffectFlag = 0x08, // lcd display has bgr order |
| 22 kPortrait_DistanceFieldEffectFlag = 0x10, // lcd display is in portrait
mode (not used yet) |
| 23 |
| 24 kUniformScale_DistanceFieldEffectMask = kSimilarity_DistanceFieldEffectFlag
| |
| 25 kRectToRect_DistanceFieldEffectFlag, |
| 26 // The subset of the flags relevant to GrDistanceFieldTextureEffect |
| 27 kNonLCD_DistanceFieldEffectMask = kSimilarity_DistanceFieldEffectFlag, |
| 28 // The subset of the flags relevant to GrDistanceFieldLCDTextureEffect |
| 29 kLCD_DistanceFieldEffectMask = kSimilarity_DistanceFieldEffectFlag
| |
| 30 kRectToRect_DistanceFieldEffectFlag
| |
| 31 kUseLCD_DistanceFieldEffectFlag | |
| 32 kBGR_DistanceFieldEffectFlag, |
| 33 }; |
| 34 |
17 /** | 35 /** |
18 * The output color of this effect is a modulation of the input color and a samp
le from a | 36 * The output color of this effect is a modulation of the input color and a samp
le from a |
19 * distance field texture (using a smoothed step function near 0.5). | 37 * distance field texture (using a smoothed step function near 0.5). |
20 * It allows explicit specification of the filtering and wrap modes (GrTexturePa
rams). The input | 38 * It allows explicit specification of the filtering and wrap modes (GrTexturePa
rams). The input |
21 * coords are a custom attribute. Gamma correction is handled via a texture LUT. | 39 * coords are a custom attribute. Gamma correction is handled via a texture LUT. |
22 */ | 40 */ |
23 class GrDistanceFieldTextureEffect : public GrVertexEffect { | 41 class GrDistanceFieldTextureEffect : public GrVertexEffect { |
24 public: | 42 public: |
25 #ifdef SK_GAMMA_APPLY_TO_A8 | 43 #ifdef SK_GAMMA_APPLY_TO_A8 |
26 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, | 44 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, |
27 GrTexture* gamma, const GrTextureParams& gammaParams
, float lum, | 45 GrTexture* gamma, const GrTextureParams& gammaParams
, float lum, |
28 bool similarity) { | 46 uint32_t flags) { |
29 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, gamma, gamm
aParams, lum, | 47 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, gamma, gamm
aParams, lum, |
30 similarity)); | 48 flags)); |
31 } | 49 } |
32 #else | 50 #else |
33 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, | 51 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, |
34 bool similarity) { | 52 uint32_t flags) { |
35 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, similarit
y)); | 53 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, flags)); |
36 } | 54 } |
37 #endif | 55 #endif |
38 | 56 |
39 virtual ~GrDistanceFieldTextureEffect() {} | 57 virtual ~GrDistanceFieldTextureEffect() {} |
40 | 58 |
41 static const char* Name() { return "DistanceFieldTexture"; } | 59 static const char* Name() { return "DistanceFieldTexture"; } |
42 | 60 |
43 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 61 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
44 #ifdef SK_GAMMA_APPLY_TO_A8 | 62 #ifdef SK_GAMMA_APPLY_TO_A8 |
45 float getLuminance() const { return fLuminance; } | 63 float getLuminance() const { return fLuminance; } |
46 #endif | 64 #endif |
47 bool isSimilarity() const { return fIsSimilarity; } | 65 uint32_t getFlags() const { return fFlags; } |
48 | 66 |
49 typedef GrGLDistanceFieldTextureEffect GLEffect; | 67 typedef GrGLDistanceFieldTextureEffect GLEffect; |
50 | 68 |
51 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | 69 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
52 | 70 |
53 private: | 71 private: |
54 GrDistanceFieldTextureEffect(GrTexture* texture, const GrTextureParams& para
ms, | 72 GrDistanceFieldTextureEffect(GrTexture* texture, const GrTextureParams& para
ms, |
55 #ifdef SK_GAMMA_APPLY_TO_A8 | 73 #ifdef SK_GAMMA_APPLY_TO_A8 |
56 GrTexture* gamma, const GrTextureParams& gammaP
arams, float lum, | 74 GrTexture* gamma, const GrTextureParams& gammaP
arams, float lum, |
57 #endif | 75 #endif |
58 bool uniformScale); | 76 uint32_t flags); |
59 | 77 |
60 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; | 78 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; |
61 | 79 |
62 GrTextureAccess fTextureAccess; | 80 GrTextureAccess fTextureAccess; |
63 #ifdef SK_GAMMA_APPLY_TO_A8 | 81 #ifdef SK_GAMMA_APPLY_TO_A8 |
64 GrTextureAccess fGammaTextureAccess; | 82 GrTextureAccess fGammaTextureAccess; |
65 float fLuminance; | 83 float fLuminance; |
66 #endif | 84 #endif |
67 bool fIsSimilarity; | 85 uint32_t fFlags; |
68 | 86 |
69 GR_DECLARE_EFFECT_TEST; | 87 GR_DECLARE_EFFECT_TEST; |
70 | 88 |
71 typedef GrVertexEffect INHERITED; | 89 typedef GrVertexEffect INHERITED; |
72 }; | 90 }; |
73 | 91 |
74 /** | 92 /** |
75 * The output color of this effect is a modulation of the input color and sample
s from a | 93 * The output color of this effect is a modulation of the input color and sample
s from a |
76 * distance field texture (using a smoothed step function near 0.5), adjusted fo
r LCD displays. | 94 * distance field texture (using a smoothed step function near 0.5), adjusted fo
r LCD displays. |
77 * It allows explicit specification of the filtering and wrap modes (GrTexturePa
rams). The input | 95 * It allows explicit specification of the filtering and wrap modes (GrTexturePa
rams). The input |
78 * coords are a custom attribute. Gamma correction is handled via a texture LUT. | 96 * coords are a custom attribute. Gamma correction is handled via a texture LUT. |
79 */ | 97 */ |
80 class GrDistanceFieldLCDTextureEffect : public GrVertexEffect { | 98 class GrDistanceFieldLCDTextureEffect : public GrVertexEffect { |
81 public: | 99 public: |
82 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, | 100 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, |
83 GrTexture* gamma, const GrTextureParams& gammaParams
, | 101 GrTexture* gamma, const GrTextureParams& gammaParams
, |
84 SkColor textColor, bool uniformScale, bool useBGR) { | 102 SkColor textColor, uint32_t flags) { |
85 return SkNEW_ARGS(GrDistanceFieldLCDTextureEffect, | 103 return SkNEW_ARGS(GrDistanceFieldLCDTextureEffect, |
86 (tex, params, gamma, gammaParams, textColor, uniformSc
ale, useBGR)); | 104 (tex, params, gamma, gammaParams, textColor, flags)); |
87 } | 105 } |
88 | 106 |
89 virtual ~GrDistanceFieldLCDTextureEffect() {} | 107 virtual ~GrDistanceFieldLCDTextureEffect() {} |
90 | 108 |
91 static const char* Name() { return "DistanceFieldLCDTexture"; } | 109 static const char* Name() { return "DistanceFieldLCDTexture"; } |
92 | 110 |
93 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 111 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
94 GrColor getTextColor() const { return fTextColor; } | 112 GrColor getTextColor() const { return fTextColor; } |
95 bool isUniformScale() const { return fUniformScale; } | 113 uint32_t getFlags() const { return fFlags; } |
96 bool useBGR() const { return fUseBGR; } | |
97 | 114 |
98 typedef GrGLDistanceFieldLCDTextureEffect GLEffect; | 115 typedef GrGLDistanceFieldLCDTextureEffect GLEffect; |
99 | 116 |
100 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | 117 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
101 | 118 |
102 private: | 119 private: |
103 GrDistanceFieldLCDTextureEffect(GrTexture* texture, const GrTextureParams& p
arams, | 120 GrDistanceFieldLCDTextureEffect(GrTexture* texture, const GrTextureParams& p
arams, |
104 GrTexture* gamma, const GrTextureParams& gam
maParams, | 121 GrTexture* gamma, const GrTextureParams& gam
maParams, |
105 SkColor textColor, | 122 SkColor textColor, |
106 bool uniformScale, bool useBGR); | 123 uint32_t flags); |
107 | 124 |
108 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; | 125 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; |
109 | 126 |
110 GrTextureAccess fTextureAccess; | 127 GrTextureAccess fTextureAccess; |
111 GrTextureAccess fGammaTextureAccess; | 128 GrTextureAccess fGammaTextureAccess; |
112 GrColor fTextColor; | 129 GrColor fTextColor; |
113 bool fUniformScale; | 130 uint32_t fFlags; |
114 bool fUseBGR; | |
115 | 131 |
116 GR_DECLARE_EFFECT_TEST; | 132 GR_DECLARE_EFFECT_TEST; |
117 | 133 |
118 typedef GrVertexEffect INHERITED; | 134 typedef GrVertexEffect INHERITED; |
119 }; | 135 }; |
120 | 136 |
121 #endif | 137 #endif |
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