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| 1 /* |
| 2 * Copyright 2013 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef GrBicubicTextureEffect_DEFINED |
| 9 #define GrBicubicTextureEffect_DEFINED |
| 10 |
| 11 #include "GrSingleTextureEffect.h" |
| 12 #include "GrDrawEffect.h" |
| 13 #include "gl/GrGLEffect.h" |
| 14 #include "gl/GrGLEffectMatrix.h" |
| 15 #include "GrTBackendEffectFactory.h" |
| 16 |
| 17 class GrGLBicubicEffect; |
| 18 |
| 19 class GrBicubicEffect : public GrSingleTextureEffect { |
| 20 public: |
| 21 virtual ~GrBicubicEffect(); |
| 22 |
| 23 static const char* Name() { return "Bicubic"; } |
| 24 const float* coefficients() const { return fCoefficients; } |
| 25 |
| 26 typedef GrGLBicubicEffect GLEffect; |
| 27 |
| 28 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
| 29 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const SK_OVERRIDE; |
| 30 |
| 31 static GrEffectRef* Create(GrTexture* tex, const SkScalar coefficients[16])
{ |
| 32 AutoEffectUnref effect(SkNEW_ARGS(GrBicubicEffect, (tex, coefficients)))
; |
| 33 return CreateEffectRef(effect); |
| 34 } |
| 35 |
| 36 static GrEffectRef* Create(GrTexture* tex, const SkScalar coefficients[16], |
| 37 const SkMatrix& matrix, |
| 38 const GrTextureParams& p, |
| 39 CoordsType coordsType = kLocal_CoordsType) { |
| 40 AutoEffectUnref effect(SkNEW_ARGS(GrBicubicEffect, (tex, coefficients, m
atrix, p, coordsType))); |
| 41 return CreateEffectRef(effect); |
| 42 } |
| 43 |
| 44 static GrEffectRef* Create(GrTexture* tex) { |
| 45 return Create(tex, gMitchellCoefficients); |
| 46 } |
| 47 |
| 48 static GrEffectRef* Create(GrTexture* tex, |
| 49 const SkMatrix& matrix, |
| 50 const GrTextureParams& p, |
| 51 CoordsType coordsType = kLocal_CoordsType) { |
| 52 return Create(tex, gMitchellCoefficients, matrix, p, coordsType); |
| 53 } |
| 54 |
| 55 private: |
| 56 GrBicubicEffect(GrTexture*, const SkScalar coefficients[16]); |
| 57 GrBicubicEffect(GrTexture*, const SkScalar coefficients[16], |
| 58 const SkMatrix &matrix, const GrTextureParams &p, CoordsType
coordsType); |
| 59 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; |
| 60 float fCoefficients[16]; |
| 61 |
| 62 GR_DECLARE_EFFECT_TEST; |
| 63 |
| 64 static const SkScalar gMitchellCoefficients[16]; |
| 65 |
| 66 typedef GrSingleTextureEffect INHERITED; |
| 67 }; |
| 68 |
| 69 #endif |
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