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Side by Side Diff: src/gpu/effects/GrConvolutionEffect.h

Issue 582963002: Solo gp (Closed) Base URL: https://skia.googlesource.com/skia.git@no_peb
Patch Set: rebase Created 6 years, 2 months ago
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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
11 #include "Gr1DKernelEffect.h" 11 #include "Gr1DKernelEffect.h"
12 12
13 class GrGLConvolutionEffect; 13 class GrGLConvolutionEffect;
14 14
15 /** 15 /**
16 * A convolution effect. The kernel is specified as an array of 2 * half-width 16 * A convolution effect. The kernel is specified as an array of 2 * half-width
17 * + 1 weights. Each texel is multiplied by it's weight and summed to determine 17 * + 1 weights. Each texel is multiplied by it's weight and summed to determine
18 * the output color. The output color is modulated by the input color. 18 * the output color. The output color is modulated by the input color.
19 */ 19 */
20 class GrConvolutionEffect : public Gr1DKernelEffect { 20 class GrConvolutionEffect : public Gr1DKernelEffect {
21 21
22 public: 22 public:
23 23
24 /// Convolve with an arbitrary user-specified kernel 24 /// Convolve with an arbitrary user-specified kernel
25 static GrEffect* Create(GrTexture* tex, 25 static GrFragmentProcessor* Create(GrTexture* tex,
26 Direction dir, 26 Direction dir,
27 int halfWidth, 27 int halfWidth,
28 const float* kernel, 28 const float* kernel,
29 bool useBounds, 29 bool useBounds,
30 float bounds[2]) { 30 float bounds[2]) {
31 return SkNEW_ARGS(GrConvolutionEffect, (tex, 31 return SkNEW_ARGS(GrConvolutionEffect, (tex,
32 dir, 32 dir,
33 halfWidth, 33 halfWidth,
34 kernel, 34 kernel,
35 useBounds, 35 useBounds,
36 bounds)); 36 bounds));
37 } 37 }
38 38
39 /// Convolve with a Gaussian kernel 39 /// Convolve with a Gaussian kernel
40 static GrEffect* CreateGaussian(GrTexture* tex, 40 static GrFragmentProcessor* CreateGaussian(GrTexture* tex,
41 Direction dir, 41 Direction dir,
42 int halfWidth, 42 int halfWidth,
43 float gaussianSigma, 43 float gaussianSigma,
44 bool useBounds, 44 bool useBounds,
45 float bounds[2]) { 45 float bounds[2]) {
46 return SkNEW_ARGS(GrConvolutionEffect, (tex, 46 return SkNEW_ARGS(GrConvolutionEffect, (tex,
47 dir, 47 dir,
48 halfWidth, 48 halfWidth,
49 gaussianSigma, 49 gaussianSigma,
50 useBounds, 50 useBounds,
51 bounds)); 51 bounds));
52 } 52 }
53 53
54 virtual ~GrConvolutionEffect(); 54 virtual ~GrConvolutionEffect();
55 55
56 const float* kernel() const { return fKernel; } 56 const float* kernel() const { return fKernel; }
57 57
58 const float* bounds() const { return fBounds; } 58 const float* bounds() const { return fBounds; }
59 bool useBounds() const { return fUseBounds; } 59 bool useBounds() const { return fUseBounds; }
60 60
61 static const char* Name() { return "Convolution"; } 61 static const char* Name() { return "Convolution"; }
62 62
63 typedef GrGLConvolutionEffect GLEffect; 63 typedef GrGLConvolutionEffect GLProcessor;
64 64
65 virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE; 65 virtual const GrBackendFragmentProcessorFactory& getFactory() const SK_OVERR IDE;
66 66
67 virtual void getConstantColorComponents(GrColor*, uint32_t* validFlags) cons t { 67 virtual void getConstantColorComponents(GrColor*, uint32_t* validFlags) cons t {
68 // If the texture was opaque we could know that the output color if we k new the sum of the 68 // If the texture was opaque we could know that the output color if we k new the sum of the
69 // kernel values. 69 // kernel values.
70 *validFlags = 0; 70 *validFlags = 0;
71 } 71 }
72 72
73 enum { 73 enum {
74 // This was decided based on the min allowed value for the max texture 74 // This was decided based on the min allowed value for the max texture
75 // samples per fragment program run in DX9SM2 (32). A sigma param of 4.0 75 // samples per fragment program run in DX9SM2 (32). A sigma param of 4.0
(...skipping 18 matching lines...) Expand all
94 bool useBounds, 94 bool useBounds,
95 float bounds[2]); 95 float bounds[2]);
96 96
97 /// Convolve with a Gaussian kernel 97 /// Convolve with a Gaussian kernel
98 GrConvolutionEffect(GrTexture*, Direction, 98 GrConvolutionEffect(GrTexture*, Direction,
99 int halfWidth, 99 int halfWidth,
100 float gaussianSigma, 100 float gaussianSigma,
101 bool useBounds, 101 bool useBounds,
102 float bounds[2]); 102 float bounds[2]);
103 103
104 virtual bool onIsEqual(const GrEffect&) const SK_OVERRIDE; 104 virtual bool onIsEqual(const GrProcessor&) const SK_OVERRIDE;
105 105
106 GR_DECLARE_EFFECT_TEST; 106 GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
107 107
108 typedef Gr1DKernelEffect INHERITED; 108 typedef Gr1DKernelEffect INHERITED;
109 }; 109 };
110 110
111 #endif 111 #endif
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