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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 /** | 17 /** |
18 * The output color of this effect is a modulation of the input color and a samp
le from a | 18 * 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). | 19 * 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 | 20 * 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. | 21 * coords are a custom attribute. Gamma correction is handled via a texture LUT. |
22 */ | 22 */ |
23 class GrDistanceFieldTextureEffect : public GrVertexEffect { | 23 class GrDistanceFieldTextureEffect : public GrVertexEffect { |
24 public: | 24 public: |
25 #ifdef SK_GAMMA_APPLY_TO_A8 | 25 #ifdef SK_GAMMA_APPLY_TO_A8 |
26 static GrEffectRef* Create(GrTexture* tex, const GrTextureParams& params, | 26 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, |
27 GrTexture* gamma, const GrTextureParams& gammaPar
ams, float lum, | 27 GrTexture* gamma, const GrTextureParams& gammaParams
, float lum, |
28 bool similarity) { | 28 bool similarity) { |
29 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, gamma, gamm
aParams, lum, | 29 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, gamma, gamm
aParams, lum, |
30 similarity)); | 30 similarity)); |
31 } | 31 } |
32 #else | 32 #else |
33 static GrEffectRef* Create(GrTexture* tex, const GrTextureParams& params, | 33 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, |
34 bool similarity) { | 34 bool similarity) { |
35 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, similarit
y)); | 35 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, similarit
y)); |
36 } | 36 } |
37 #endif | 37 #endif |
38 | 38 |
39 virtual ~GrDistanceFieldTextureEffect() {} | 39 virtual ~GrDistanceFieldTextureEffect() {} |
40 | 40 |
41 static const char* Name() { return "DistanceFieldTexture"; } | 41 static const char* Name() { return "DistanceFieldTexture"; } |
42 | 42 |
43 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 43 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
44 #ifdef SK_GAMMA_APPLY_TO_A8 | 44 #ifdef SK_GAMMA_APPLY_TO_A8 |
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72 }; | 72 }; |
73 | 73 |
74 /** | 74 /** |
75 * The output color of this effect is a modulation of the input color and sample
s from a | 75 * 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. | 76 * 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 | 77 * 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. | 78 * coords are a custom attribute. Gamma correction is handled via a texture LUT. |
79 */ | 79 */ |
80 class GrDistanceFieldLCDTextureEffect : public GrVertexEffect { | 80 class GrDistanceFieldLCDTextureEffect : public GrVertexEffect { |
81 public: | 81 public: |
82 static GrEffectRef* Create(GrTexture* tex, const GrTextureParams& params, | 82 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, |
83 GrTexture* gamma, const GrTextureParams& gammaPar
ams, | 83 GrTexture* gamma, const GrTextureParams& gammaParams
, |
84 SkColor textColor, | 84 SkColor textColor, bool uniformScale, bool useBGR) { |
85 bool uniformScale, bool useBGR) { | |
86 return SkNEW_ARGS(GrDistanceFieldLCDTextureEffect, | 85 return SkNEW_ARGS(GrDistanceFieldLCDTextureEffect, |
87 (tex, params, gamma, gammaParams, textColor, uniformSc
ale, useBGR)); | 86 (tex, params, gamma, gammaParams, textColor, uniformSc
ale, useBGR)); |
88 } | 87 } |
89 | 88 |
90 virtual ~GrDistanceFieldLCDTextureEffect() {} | 89 virtual ~GrDistanceFieldLCDTextureEffect() {} |
91 | 90 |
92 static const char* Name() { return "DistanceFieldLCDTexture"; } | 91 static const char* Name() { return "DistanceFieldLCDTexture"; } |
93 | 92 |
94 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 93 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
95 GrColor getTextColor() const { return fTextColor; } | 94 GrColor getTextColor() const { return fTextColor; } |
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113 GrColor fTextColor; | 112 GrColor fTextColor; |
114 bool fUniformScale; | 113 bool fUniformScale; |
115 bool fUseBGR; | 114 bool fUseBGR; |
116 | 115 |
117 GR_DECLARE_EFFECT_TEST; | 116 GR_DECLARE_EFFECT_TEST; |
118 | 117 |
119 typedef GrVertexEffect INHERITED; | 118 typedef GrVertexEffect INHERITED; |
120 }; | 119 }; |
121 | 120 |
122 #endif | 121 #endif |
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