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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 GrConvolutionEffect_DEFINED | 8 #ifndef GrConvolutionEffect_DEFINED |
9 #define GrConvolutionEffect_DEFINED | 9 #define GrConvolutionEffect_DEFINED |
10 | 10 |
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45 virtual ~GrConvolutionEffect(); | 45 virtual ~GrConvolutionEffect(); |
46 | 46 |
47 const float* kernel() const { return fKernel; } | 47 const float* kernel() const { return fKernel; } |
48 | 48 |
49 static const char* Name() { return "Convolution"; } | 49 static const char* Name() { return "Convolution"; } |
50 | 50 |
51 typedef GrGLConvolutionEffect GLEffect; | 51 typedef GrGLConvolutionEffect GLEffect; |
52 | 52 |
53 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; | 53 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; |
54 | 54 |
55 virtual void getConstantColorComponents(GrColor* color, uint32_t* validFlags
) const { | 55 virtual void getConstantColorComponents(GrColor*, uint32_t* validFlags) cons
t { |
56 // If the texture was opaque we could know that the output color if we k
new the sum of the | 56 // If the texture was opaque we could know that the output color if we k
new the sum of the |
57 // kernel values. | 57 // kernel values. |
58 *validFlags = 0; | 58 *validFlags = 0; |
59 } | 59 } |
60 | 60 |
61 enum { | 61 enum { |
62 // This was decided based on the min allowed value for the max texture | 62 // This was decided based on the min allowed value for the max texture |
63 // samples per fragment program run in DX9SM2 (32). A sigma param of 4.0 | 63 // samples per fragment program run in DX9SM2 (32). A sigma param of 4.0 |
64 // on a blur filter gives a kernel width of 25 while a sigma of 5.0 | 64 // on a blur filter gives a kernel width of 25 while a sigma of 5.0 |
65 // would exceed a 32 wide kernel. | 65 // would exceed a 32 wide kernel. |
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83 float gaussianSigma); | 83 float gaussianSigma); |
84 | 84 |
85 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; | 85 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; |
86 | 86 |
87 GR_DECLARE_EFFECT_TEST; | 87 GR_DECLARE_EFFECT_TEST; |
88 | 88 |
89 typedef Gr1DKernelEffect INHERITED; | 89 typedef Gr1DKernelEffect INHERITED; |
90 }; | 90 }; |
91 | 91 |
92 #endif | 92 #endif |
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