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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 "GrProcessor.h" |
| 12 #include "GrGeometryProcessor.h" | 12 #include "GrGeometryProcessor.h" |
| 13 | 13 |
| 14 class GrGLDistanceFieldTextureEffect; | 14 class GrGLDistanceFieldTextureEffect; |
| 15 class GrGLDistanceFieldLCDTextureEffect; | 15 class GrGLDistanceFieldLCDTextureEffect; |
| 16 | 16 |
| 17 enum GrDistanceFieldEffectFlags { | 17 enum GrDistanceFieldEffectFlags { |
| 18 kSimilarity_DistanceFieldEffectFlag = 0x01, // ctm is similarity matrix | 18 kSimilarity_DistanceFieldEffectFlag = 0x01, // ctm is similarity matrix |
| 19 kRectToRect_DistanceFieldEffectFlag = 0x02, // ctm maps rects to rects | 19 kRectToRect_DistanceFieldEffectFlag = 0x02, // ctm maps rects to rects |
| 20 kUseLCD_DistanceFieldEffectFlag = 0x04, // use lcd text | 20 kUseLCD_DistanceFieldEffectFlag = 0x04, // use lcd text |
| 21 kBGR_DistanceFieldEffectFlag = 0x08, // lcd display has bgr order | 21 kBGR_DistanceFieldEffectFlag = 0x08, // lcd display has bgr order |
| (...skipping 12 matching lines...) Expand all Loading... |
| 34 | 34 |
| 35 /** | 35 /** |
| 36 * 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 |
| 37 * distance field texture (using a smoothed step function near 0.5). | 37 * distance field texture (using a smoothed step function near 0.5). |
| 38 * 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 |
| 39 * 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. |
| 40 */ | 40 */ |
| 41 class GrDistanceFieldTextureEffect : public GrGeometryProcessor { | 41 class GrDistanceFieldTextureEffect : public GrGeometryProcessor { |
| 42 public: | 42 public: |
| 43 #ifdef SK_GAMMA_APPLY_TO_A8 | 43 #ifdef SK_GAMMA_APPLY_TO_A8 |
| 44 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, | 44 static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& pa
rams, |
| 45 GrTexture* gamma, const GrTextureParams& gammaParams
, float lum, | 45 GrTexture* gamma, const GrTextureParams&
gammaParams, |
| 46 uint32_t flags) { | 46 float lum, uint32_t flags) { |
| 47 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, gamma, gamm
aParams, lum, | 47 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, gamma, gamm
aParams, lum, |
| 48 flags)); | 48 flags)); |
| 49 } | 49 } |
| 50 #else | 50 #else |
| 51 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, | 51 static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& pa
rams, |
| 52 uint32_t flags) { | 52 uint32_t flags) { |
| 53 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, flags)); | 53 return SkNEW_ARGS(GrDistanceFieldTextureEffect, (tex, params, flags)); |
| 54 } | 54 } |
| 55 #endif | 55 #endif |
| 56 | 56 |
| 57 virtual ~GrDistanceFieldTextureEffect() {} | 57 virtual ~GrDistanceFieldTextureEffect() {} |
| 58 | 58 |
| 59 static const char* Name() { return "DistanceFieldTexture"; } | 59 static const char* Name() { return "DistanceFieldTexture"; } |
| 60 | 60 |
| 61 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 61 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
| 62 | 62 |
| 63 const GrShaderVar& inTextureCoords() const { return fInTextureCoords; } | 63 const GrShaderVar& inTextureCoords() const { return fInTextureCoords; } |
| 64 #ifdef SK_GAMMA_APPLY_TO_A8 | 64 #ifdef SK_GAMMA_APPLY_TO_A8 |
| 65 float getLuminance() const { return fLuminance; } | 65 float getLuminance() const { return fLuminance; } |
| 66 #endif | 66 #endif |
| 67 uint32_t getFlags() const { return fFlags; } | 67 uint32_t getFlags() const { return fFlags; } |
| 68 | 68 |
| 69 typedef GrGLDistanceFieldTextureEffect GLEffect; | 69 typedef GrGLDistanceFieldTextureEffect GLProcessor; |
| 70 | 70 |
| 71 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | 71 virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERR
IDE; |
| 72 | 72 |
| 73 private: | 73 private: |
| 74 GrDistanceFieldTextureEffect(GrTexture* texture, const GrTextureParams& para
ms, | 74 GrDistanceFieldTextureEffect(GrTexture* texture, const GrTextureParams& para
ms, |
| 75 #ifdef SK_GAMMA_APPLY_TO_A8 | 75 #ifdef SK_GAMMA_APPLY_TO_A8 |
| 76 GrTexture* gamma, const GrTextureParams& gammaP
arams, float lum, | 76 GrTexture* gamma, const GrTextureParams& gammaP
arams, float lum, |
| 77 #endif | 77 #endif |
| 78 uint32_t flags); | 78 uint32_t flags); |
| 79 | 79 |
| 80 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; | 80 virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE; |
| 81 | 81 |
| 82 GrTextureAccess fTextureAccess; | 82 GrTextureAccess fTextureAccess; |
| 83 #ifdef SK_GAMMA_APPLY_TO_A8 | 83 #ifdef SK_GAMMA_APPLY_TO_A8 |
| 84 GrTextureAccess fGammaTextureAccess; | 84 GrTextureAccess fGammaTextureAccess; |
| 85 float fLuminance; | 85 float fLuminance; |
| 86 #endif | 86 #endif |
| 87 uint32_t fFlags; | 87 uint32_t fFlags; |
| 88 const GrShaderVar& fInTextureCoords; | 88 const GrShaderVar& fInTextureCoords; |
| 89 | 89 |
| 90 GR_DECLARE_EFFECT_TEST; | 90 GR_DECLARE_GEOMETRY_PROCESSOR_TEST; |
| 91 | 91 |
| 92 typedef GrEffect INHERITED; | 92 typedef GrFragmentProcessor INHERITED; |
| 93 }; | 93 }; |
| 94 | 94 |
| 95 /** | 95 /** |
| 96 * The output color of this effect is a modulation of the input color and sample
s from a | 96 * The output color of this effect is a modulation of the input color and sample
s from a |
| 97 * distance field texture (using a smoothed step function near 0.5), adjusted fo
r LCD displays. | 97 * distance field texture (using a smoothed step function near 0.5), adjusted fo
r LCD displays. |
| 98 * It allows explicit specification of the filtering and wrap modes (GrTexturePa
rams). The input | 98 * It allows explicit specification of the filtering and wrap modes (GrTexturePa
rams). The input |
| 99 * coords are a custom attribute. Gamma correction is handled via a texture LUT. | 99 * coords are a custom attribute. Gamma correction is handled via a texture LUT. |
| 100 */ | 100 */ |
| 101 class GrDistanceFieldLCDTextureEffect : public GrGeometryProcessor { | 101 class GrDistanceFieldLCDTextureEffect : public GrGeometryProcessor { |
| 102 public: | 102 public: |
| 103 static GrEffect* Create(GrTexture* tex, const GrTextureParams& params, | 103 static GrGeometryProcessor* Create(GrTexture* tex, const GrTextureParams& pa
rams, |
| 104 GrTexture* gamma, const GrTextureParams& gammaParams
, | 104 GrTexture* gamma, const GrTextureParams&
gammaParams, |
| 105 SkColor textColor, uint32_t flags) { | 105 SkColor textColor, uint32_t flags) { |
| 106 return SkNEW_ARGS(GrDistanceFieldLCDTextureEffect, | 106 return SkNEW_ARGS(GrDistanceFieldLCDTextureEffect, |
| 107 (tex, params, gamma, gammaParams, textColor, flags)); | 107 (tex, params, gamma, gammaParams, textColor, flags)); |
| 108 } | 108 } |
| 109 | 109 |
| 110 virtual ~GrDistanceFieldLCDTextureEffect() {} | 110 virtual ~GrDistanceFieldLCDTextureEffect() {} |
| 111 | 111 |
| 112 static const char* Name() { return "DistanceFieldLCDTexture"; } | 112 static const char* Name() { return "DistanceFieldLCDTexture"; } |
| 113 | 113 |
| 114 const GrShaderVar& inTextureCoords() const { return fInTextureCoords; } | 114 const GrShaderVar& inTextureCoords() const { return fInTextureCoords; } |
| 115 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; | 115 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
| 116 GrColor getTextColor() const { return fTextColor; } | 116 GrColor getTextColor() const { return fTextColor; } |
| 117 uint32_t getFlags() const { return fFlags; } | 117 uint32_t getFlags() const { return fFlags; } |
| 118 | 118 |
| 119 typedef GrGLDistanceFieldLCDTextureEffect GLEffect; | 119 typedef GrGLDistanceFieldLCDTextureEffect GLProcessor; |
| 120 | 120 |
| 121 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | 121 virtual const GrBackendGeometryProcessorFactory& getFactory() const SK_OVERR
IDE; |
| 122 | 122 |
| 123 private: | 123 private: |
| 124 GrDistanceFieldLCDTextureEffect(GrTexture* texture, const GrTextureParams& p
arams, | 124 GrDistanceFieldLCDTextureEffect(GrTexture* texture, const GrTextureParams& p
arams, |
| 125 GrTexture* gamma, const GrTextureParams& gam
maParams, | 125 GrTexture* gamma, const GrTextureParams& gam
maParams, |
| 126 SkColor textColor, | 126 SkColor textColor, |
| 127 uint32_t flags); | 127 uint32_t flags); |
| 128 | 128 |
| 129 virtual bool onIsEqual(const GrEffect& other) const SK_OVERRIDE; | 129 virtual bool onIsEqual(const GrProcessor& other) const SK_OVERRIDE; |
| 130 | 130 |
| 131 GrTextureAccess fTextureAccess; | 131 GrTextureAccess fTextureAccess; |
| 132 GrTextureAccess fGammaTextureAccess; | 132 GrTextureAccess fGammaTextureAccess; |
| 133 GrColor fTextColor; | 133 GrColor fTextColor; |
| 134 uint32_t fFlags; | 134 uint32_t fFlags; |
| 135 const GrShaderVar& fInTextureCoords; | 135 const GrShaderVar& fInTextureCoords; |
| 136 | 136 |
| 137 GR_DECLARE_EFFECT_TEST; | 137 GR_DECLARE_GEOMETRY_PROCESSOR_TEST; |
| 138 | 138 |
| 139 typedef GrEffect INHERITED; | 139 typedef GrFragmentProcessor INHERITED; |
| 140 }; | 140 }; |
| 141 | 141 |
| 142 #endif | 142 #endif |
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