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| 1 /* | 1 /* |
| 2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 GrTextureDomainEffect_DEFINED | 8 #ifndef GrTextureDomainEffect_DEFINED |
| 9 #define GrTextureDomainEffect_DEFINED | 9 #define GrTextureDomainEffect_DEFINED |
| 10 | 10 |
| 11 #include "GrSingleTextureEffect.h" | 11 #include "GrSingleTextureEffect.h" |
| 12 #include "GrRect.h" | |
| 13 | 12 |
| 14 class GrGLTextureDomainEffect; | 13 class GrGLTextureDomainEffect; |
| 14 struct SkRect; |
| 15 | 15 |
| 16 /** | 16 /** |
| 17 * Limits a texture's lookup coordinates to a domain. Samples outside the domain
are either clamped | 17 * Limits a texture's lookup coordinates to a domain. Samples outside the domain
are either clamped |
| 18 * the edge of the domain or result in a vec4 of zeros. The domain is clipped to
normalized texture | 18 * the edge of the domain or result in a vec4 of zeros. The domain is clipped to
normalized texture |
| 19 * coords ([0,1]x[0,1] square). Bilinear filtering can cause texels outside the
domain to affect the | 19 * coords ([0,1]x[0,1] square). Bilinear filtering can cause texels outside the
domain to affect the |
| 20 * read value unless the caller considers this when calculating the domain. TODO
: This should be a | 20 * read value unless the caller considers this when calculating the domain. TODO
: This should be a |
| 21 * helper that can assist an effect rather than effect unto itself. | 21 * helper that can assist an effect rather than effect unto itself. |
| 22 */ | 22 */ |
| 23 class GrTextureDomainEffect : public GrSingleTextureEffect { | 23 class GrTextureDomainEffect : public GrSingleTextureEffect { |
| 24 | 24 |
| (...skipping 42 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 67 return result; | 67 return result; |
| 68 } | 68 } |
| 69 | 69 |
| 70 protected: | 70 protected: |
| 71 WrapMode fWrapMode; | 71 WrapMode fWrapMode; |
| 72 SkRect fTextureDomain; | 72 SkRect fTextureDomain; |
| 73 | 73 |
| 74 private: | 74 private: |
| 75 GrTextureDomainEffect(GrTexture*, | 75 GrTextureDomainEffect(GrTexture*, |
| 76 const SkMatrix&, | 76 const SkMatrix&, |
| 77 const GrRect& domain, | 77 const SkRect& domain, |
| 78 WrapMode, | 78 WrapMode, |
| 79 bool bilerp, | 79 bool bilerp, |
| 80 CoordsType type); | 80 CoordsType type); |
| 81 | 81 |
| 82 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; | 82 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; |
| 83 | 83 |
| 84 GR_DECLARE_EFFECT_TEST; | 84 GR_DECLARE_EFFECT_TEST; |
| 85 | 85 |
| 86 typedef GrSingleTextureEffect INHERITED; | 86 typedef GrSingleTextureEffect INHERITED; |
| 87 }; | 87 }; |
| 88 | 88 |
| 89 #endif | 89 #endif |
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