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

Issue 1388113002: Bye bye processor data manager (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: remove files Created 5 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 #include "GrInvariantOutput.h" 12 #include "GrInvariantOutput.h"
13 13
14 /** 14 /**
15 * A convolution effect. The kernel is specified as an array of 2 * half-width 15 * A convolution effect. The kernel is specified as an array of 2 * half-width
16 * + 1 weights. Each texel is multiplied by it's weight and summed to determine 16 * + 1 weights. Each texel is multiplied by it's weight and summed to determine
17 * the output color. The output color is modulated by the input color. 17 * the output color. The output color is modulated by the input color.
18 */ 18 */
19 class GrConvolutionEffect : public Gr1DKernelEffect { 19 class GrConvolutionEffect : public Gr1DKernelEffect {
20 20
21 public: 21 public:
22 22
23 /// Convolve with an arbitrary user-specified kernel 23 /// Convolve with an arbitrary user-specified kernel
24 static GrFragmentProcessor* Create(GrProcessorDataManager* procDataManager, 24 static GrFragmentProcessor* Create(GrTexture* tex,
25 GrTexture* tex,
26 Direction dir, 25 Direction dir,
27 int halfWidth, 26 int halfWidth,
28 const float* kernel, 27 const float* kernel,
29 bool useBounds, 28 bool useBounds,
30 float bounds[2]) { 29 float bounds[2]) {
31 return new GrConvolutionEffect(procDataManager, tex, dir, halfWidth, ker nel, useBounds, 30 return new GrConvolutionEffect(tex, dir, halfWidth, kernel, useBounds, b ounds);
32 bounds);
33 } 31 }
34 32
35 /// Convolve with a Gaussian kernel 33 /// Convolve with a Gaussian kernel
36 static GrFragmentProcessor* CreateGaussian(GrProcessorDataManager* procDataM anager, 34 static GrFragmentProcessor* CreateGaussian(GrTexture* tex,
37 GrTexture* tex,
38 Direction dir, 35 Direction dir,
39 int halfWidth, 36 int halfWidth,
40 float gaussianSigma, 37 float gaussianSigma,
41 bool useBounds, 38 bool useBounds,
42 float bounds[2]) { 39 float bounds[2]) {
43 return new GrConvolutionEffect(procDataManager, tex, dir, halfWidth, gau ssianSigma, 40 return new GrConvolutionEffect(tex, dir, halfWidth, gaussianSigma, useBo unds, bounds);
44 useBounds, bounds);
45 } 41 }
46 42
47 virtual ~GrConvolutionEffect(); 43 virtual ~GrConvolutionEffect();
48 44
49 const float* kernel() const { return fKernel; } 45 const float* kernel() const { return fKernel; }
50 46
51 const float* bounds() const { return fBounds; } 47 const float* bounds() const { return fBounds; }
52 bool useBounds() const { return fUseBounds; } 48 bool useBounds() const { return fUseBounds; }
53 49
54 const char* name() const override { return "Convolution"; } 50 const char* name() const override { return "Convolution"; }
55 51
56 enum { 52 enum {
57 // This was decided based on the min allowed value for the max texture 53 // This was decided based on the min allowed value for the max texture
58 // samples per fragment program run in DX9SM2 (32). A sigma param of 4.0 54 // samples per fragment program run in DX9SM2 (32). A sigma param of 4.0
59 // on a blur filter gives a kernel width of 25 while a sigma of 5.0 55 // on a blur filter gives a kernel width of 25 while a sigma of 5.0
60 // would exceed a 32 wide kernel. 56 // would exceed a 32 wide kernel.
61 kMaxKernelRadius = 12, 57 kMaxKernelRadius = 12,
62 // With a C++11 we could have a constexpr version of WidthFromRadius() 58 // With a C++11 we could have a constexpr version of WidthFromRadius()
63 // and not have to duplicate this calculation. 59 // and not have to duplicate this calculation.
64 kMaxKernelWidth = 2 * kMaxKernelRadius + 1, 60 kMaxKernelWidth = 2 * kMaxKernelRadius + 1,
65 }; 61 };
66 62
67 protected: 63 protected:
68 64
69 float fKernel[kMaxKernelWidth]; 65 float fKernel[kMaxKernelWidth];
70 bool fUseBounds; 66 bool fUseBounds;
71 float fBounds[2]; 67 float fBounds[2];
72 68
73 private: 69 private:
74 GrConvolutionEffect(GrProcessorDataManager*, 70 GrConvolutionEffect(GrTexture*, Direction,
75 GrTexture*, Direction,
76 int halfWidth, 71 int halfWidth,
77 const float* kernel, 72 const float* kernel,
78 bool useBounds, 73 bool useBounds,
79 float bounds[2]); 74 float bounds[2]);
80 75
81 /// Convolve with a Gaussian kernel 76 /// Convolve with a Gaussian kernel
82 GrConvolutionEffect(GrProcessorDataManager*, 77 GrConvolutionEffect(GrTexture*, Direction,
83 GrTexture*, Direction,
84 int halfWidth, 78 int halfWidth,
85 float gaussianSigma, 79 float gaussianSigma,
86 bool useBounds, 80 bool useBounds,
87 float bounds[2]); 81 float bounds[2]);
88 82
89 GrGLFragmentProcessor* onCreateGLInstance() const override; 83 GrGLFragmentProcessor* onCreateGLInstance() const override;
90 84
91 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov erride; 85 void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const ov erride;
92 86
93 bool onIsEqual(const GrFragmentProcessor&) const override; 87 bool onIsEqual(const GrFragmentProcessor&) const override;
94 88
95 void onComputeInvariantOutput(GrInvariantOutput* inout) const override { 89 void onComputeInvariantOutput(GrInvariantOutput* inout) const override {
96 // If the texture was opaque we could know that the output color if we k new the sum of the 90 // If the texture was opaque we could know that the output color if we k new the sum of the
97 // kernel values. 91 // kernel values.
98 inout->mulByUnknownFourComponents(); 92 inout->mulByUnknownFourComponents();
99 } 93 }
100 94
101 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; 95 GR_DECLARE_FRAGMENT_PROCESSOR_TEST;
102 96
103 typedef Gr1DKernelEffect INHERITED; 97 typedef Gr1DKernelEffect INHERITED;
104 }; 98 };
105 99
106 #endif 100 #endif
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