OLD | NEW |
(Empty) | |
| 1 /* |
| 2 * Copyright 2014 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 GrMatrixConvolutionEffect_DEFINED |
| 9 #define GrMatrixConvolutionEffect_DEFINED |
| 10 |
| 11 #include "GrSingleTextureEffect.h" |
| 12 |
| 13 // A little bit less than the minimum # uniforms required by DX9SM2 (32). |
| 14 // Allows for a 5x5 kernel (or 25x1, for that matter). |
| 15 #define MAX_KERNEL_SIZE 25 |
| 16 |
| 17 class GrGLMatrixConvolutionEffect; |
| 18 |
| 19 class GrMatrixConvolutionEffect : public GrSingleTextureEffect { |
| 20 public: |
| 21 /*! \enum TileMode */ |
| 22 enum TileMode { |
| 23 kClamp_TileMode = 0, /*!< Clamp to the image's edge pixels. */ |
| 24 kRepeat_TileMode, /*!< Wrap around to the image's opposite edge.
*/ |
| 25 kClampToBlack_TileMode, /*!< Fill with transparent black. */ |
| 26 kMax_TileMode = kClampToBlack_TileMode |
| 27 }; |
| 28 |
| 29 typedef GrMatrixConvolutionEffect::TileMode TileMode; |
| 30 static GrEffect* Create(GrTexture* texture, |
| 31 const SkIRect& bounds, |
| 32 const SkISize& kernelSize, |
| 33 const SkScalar* kernel, |
| 34 SkScalar gain, |
| 35 SkScalar bias, |
| 36 const SkIPoint& kernelOffset, |
| 37 TileMode tileMode, |
| 38 bool convolveAlpha) { |
| 39 return SkNEW_ARGS(GrMatrixConvolutionEffect, (texture, |
| 40 bounds, |
| 41 kernelSize, |
| 42 kernel, |
| 43 gain, |
| 44 bias, |
| 45 kernelOffset, |
| 46 tileMode, |
| 47 convolveAlpha)); |
| 48 } |
| 49 virtual ~GrMatrixConvolutionEffect(); |
| 50 |
| 51 virtual void getConstantColorComponents(GrColor* color, |
| 52 uint32_t* validFlags) const SK_OVERR
IDE { |
| 53 // TODO: Try to do better? |
| 54 *validFlags = 0; |
| 55 } |
| 56 |
| 57 static const char* Name() { return "MatrixConvolution"; } |
| 58 const SkIRect& bounds() const { return fBounds; } |
| 59 const SkISize& kernelSize() const { return fKernelSize; } |
| 60 const float* kernelOffset() const { return fKernelOffset; } |
| 61 const float* kernel() const { return fKernel; } |
| 62 float gain() const { return fGain; } |
| 63 float bias() const { return fBias; } |
| 64 TileMode tileMode() const { return fTileMode; } |
| 65 bool convolveAlpha() const { return fConvolveAlpha; } |
| 66 |
| 67 typedef GrGLMatrixConvolutionEffect GLEffect; |
| 68 |
| 69 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
| 70 |
| 71 private: |
| 72 GrMatrixConvolutionEffect(GrTexture*, |
| 73 const SkIRect& bounds, |
| 74 const SkISize& kernelSize, |
| 75 const SkScalar* kernel, |
| 76 SkScalar gain, |
| 77 SkScalar bias, |
| 78 const SkIPoint& kernelOffset, |
| 79 TileMode tileMode, |
| 80 bool convolveAlpha); |
| 81 |
| 82 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; |
| 83 |
| 84 SkIRect fBounds; |
| 85 SkISize fKernelSize; |
| 86 float *fKernel; |
| 87 float fGain; |
| 88 float fBias; |
| 89 float fKernelOffset[2]; |
| 90 TileMode fTileMode; |
| 91 bool fConvolveAlpha; |
| 92 |
| 93 GR_DECLARE_EFFECT_TEST; |
| 94 |
| 95 typedef GrSingleTextureEffect INHERITED; |
| 96 }; |
| 97 |
| 98 #endif |
OLD | NEW |