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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 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 GrMatrixConvolutionEffect_DEFINED | 8 #ifndef GrMatrixConvolutionEffect_DEFINED |
9 #define GrMatrixConvolutionEffect_DEFINED | 9 #define GrMatrixConvolutionEffect_DEFINED |
10 | 10 |
11 #include "GrSingleTextureEffect.h" | 11 #include "GrSingleTextureEffect.h" |
12 #include "GrInvariantOutput.h" | 12 #include "GrInvariantOutput.h" |
13 #include "GrTextureDomain.h" | 13 #include "GrTextureDomain.h" |
14 | 14 |
15 // A little bit less than the minimum # uniforms required by DX9SM2 (32). | 15 // A little bit less than the minimum # uniforms required by DX9SM2 (32). |
16 // Allows for a 5x5 kernel (or 25x1, for that matter). | 16 // Allows for a 5x5 kernel (or 25x1, for that matter). |
17 #define MAX_KERNEL_SIZE 25 | 17 #define MAX_KERNEL_SIZE 25 |
18 | 18 |
19 class GrMatrixConvolutionEffect : public GrSingleTextureEffect { | 19 class GrMatrixConvolutionEffect : public GrSingleTextureEffect { |
20 public: | 20 public: |
21 static GrFragmentProcessor* Create(GrTexture* texture, | 21 static GrFragmentProcessor* Create(GrTexture* texture, |
22 const SkIRect& bounds, | 22 const SkIRect& bounds, |
23 const SkISize& kernelSize, | 23 const SkISize& kernelSize, |
24 const SkScalar* kernel, | 24 const SkScalar* kernel, |
25 SkScalar gain, | 25 SkScalar gain, |
26 SkScalar bias, | 26 SkScalar bias, |
27 const SkIPoint& kernelOffset, | 27 const SkIPoint& kernelOffset, |
28 GrTextureDomain::Mode tileMode, | 28 GrTextureDomain::Mode tileMode, |
29 bool convolveAlpha) { | 29 bool convolveAlpha, GrRenderTarget* dst)
{ |
30 return new GrMatrixConvolutionEffect(texture, bounds, kernelSize, kernel
, gain, bias, | 30 return new GrMatrixConvolutionEffect(texture, bounds, kernelSize, kernel
, |
31 kernelOffset, tileMode, convolveAlp
ha); | 31 gain, bias, kernelOffset, tileMode,
convolveAlpha, dst); |
32 } | 32 } |
33 | 33 |
34 static GrFragmentProcessor* CreateGaussian(GrTexture* texture, | 34 static GrFragmentProcessor* CreateGaussian(GrTexture* texture, |
35 const SkIRect& bounds, | 35 const SkIRect& bounds, |
36 const SkISize& kernelSize, | 36 const SkISize& kernelSize, |
37 SkScalar gain, | 37 SkScalar gain, |
38 SkScalar bias, | 38 SkScalar bias, |
39 const SkIPoint& kernelOffset, | 39 const SkIPoint& kernelOffset, |
40 GrTextureDomain::Mode tileMode, | 40 GrTextureDomain::Mode tileMode, |
41 bool convolveAlpha, | 41 bool convolveAlpha, |
42 SkScalar sigmaX, | 42 SkScalar sigmaX, |
43 SkScalar sigmaY); | 43 SkScalar sigmaY, GrRenderTarget*
dst); |
44 | 44 |
45 virtual ~GrMatrixConvolutionEffect(); | 45 virtual ~GrMatrixConvolutionEffect(); |
46 | 46 |
47 const SkIRect& bounds() const { return fBounds; } | 47 const SkIRect& bounds() const { return fBounds; } |
48 const SkISize& kernelSize() const { return fKernelSize; } | 48 const SkISize& kernelSize() const { return fKernelSize; } |
49 const float* kernelOffset() const { return fKernelOffset; } | 49 const float* kernelOffset() const { return fKernelOffset; } |
50 const float* kernel() const { return fKernel; } | 50 const float* kernel() const { return fKernel; } |
51 float gain() const { return fGain; } | 51 float gain() const { return fGain; } |
52 float bias() const { return fBias; } | 52 float bias() const { return fBias; } |
53 bool convolveAlpha() const { return fConvolveAlpha; } | 53 bool convolveAlpha() const { return fConvolveAlpha; } |
54 const GrTextureDomain& domain() const { return fDomain; } | 54 const GrTextureDomain& domain() const { return fDomain; } |
55 | 55 |
56 const char* name() const override { return "MatrixConvolution"; } | 56 const char* name() const override { return "MatrixConvolution"; } |
57 | 57 |
58 private: | 58 private: |
59 GrMatrixConvolutionEffect(GrTexture*, | 59 GrMatrixConvolutionEffect(GrTexture*, |
60 const SkIRect& bounds, | 60 const SkIRect& bounds, |
61 const SkISize& kernelSize, | 61 const SkISize& kernelSize, |
62 const SkScalar* kernel, | 62 const SkScalar* kernel, |
63 SkScalar gain, | 63 SkScalar gain, |
64 SkScalar bias, | 64 SkScalar bias, |
65 const SkIPoint& kernelOffset, | 65 const SkIPoint& kernelOffset, |
66 GrTextureDomain::Mode tileMode, | 66 GrTextureDomain::Mode tileMode, |
67 bool convolveAlpha); | 67 bool convolveAlpha, GrRenderTarget* dst); |
68 | 68 |
69 GrGLFragmentProcessor* onCreateGLInstance() const override; | 69 GrGLFragmentProcessor* onCreateGLInstance() const override; |
70 | 70 |
71 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov
erride; | 71 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov
erride; |
72 | 72 |
73 bool onIsEqual(const GrFragmentProcessor&) const override; | 73 bool onIsEqual(const GrFragmentProcessor&) const override; |
74 | 74 |
75 void onComputeInvariantOutput(GrInvariantOutput* inout) const override { | 75 void onComputeInvariantOutput(GrInvariantOutput* inout) const override { |
76 // TODO: Try to do better? | 76 // TODO: Try to do better? |
77 inout->mulByUnknownFourComponents(); | 77 inout->mulByUnknownFourComponents(); |
78 } | 78 } |
79 | 79 |
80 SkIRect fBounds; | 80 SkIRect fBounds; |
81 SkISize fKernelSize; | 81 SkISize fKernelSize; |
82 float fKernel[MAX_KERNEL_SIZE]; | 82 float fKernel[MAX_KERNEL_SIZE]; |
83 float fGain; | 83 float fGain; |
84 float fBias; | 84 float fBias; |
85 float fKernelOffset[2]; | 85 float fKernelOffset[2]; |
86 bool fConvolveAlpha; | 86 bool fConvolveAlpha; |
87 GrTextureDomain fDomain; | 87 GrTextureDomain fDomain; |
88 | 88 |
89 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 89 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
90 | 90 |
91 typedef GrSingleTextureEffect INHERITED; | 91 typedef GrSingleTextureEffect INHERITED; |
92 }; | 92 }; |
93 | 93 |
94 #endif | 94 #endif |
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