OLD | NEW |
1 | 1 |
2 /* | 2 /* |
3 * Copyright 2011 Google Inc. | 3 * Copyright 2011 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef GrPaint_DEFINED | 10 #ifndef GrPaint_DEFINED |
11 #define GrPaint_DEFINED | 11 #define GrPaint_DEFINED |
12 | 12 |
13 #include "GrColor.h" | 13 #include "GrColor.h" |
14 #include "GrXferProcessor.h" | 14 #include "GrXferProcessor.h" |
15 #include "effects/GrPorterDuffXferProcessor.h" | 15 #include "effects/GrPorterDuffXferProcessor.h" |
16 #include "GrFragmentProcessor.h" | 16 #include "GrFragmentProcessor.h" |
17 | 17 |
| 18 #include "SkRefCnt.h" |
18 #include "SkRegion.h" | 19 #include "SkRegion.h" |
19 #include "SkXfermode.h" | 20 #include "SkXfermode.h" |
20 | 21 |
21 /** | 22 /** |
22 * The paint describes how color and coverage are computed at each pixel by GrCo
ntext draw | 23 * The paint describes how color and coverage are computed at each pixel by GrCo
ntext draw |
23 * functions and the how color is blended with the destination pixel. | 24 * functions and the how color is blended with the destination pixel. |
24 * | 25 * |
25 * The paint allows installation of custom color and coverage stages. New types
of stages are | 26 * The paint allows installation of custom color and coverage stages. New types
of stages are |
26 * created by subclassing GrProcessor. | 27 * created by subclassing GrProcessor. |
27 * | 28 * |
28 * The primitive color computation starts with the color specified by setColor()
. This color is the | 29 * The primitive color computation starts with the color specified by setColor()
. This color is the |
29 * input to the first color stage. Each color stage feeds its output to the next
color stage. | 30 * input to the first color stage. Each color stage feeds its output to the next
color stage. |
30 * | 31 * |
31 * Fractional pixel coverage follows a similar flow. The coverage is initially t
he value specified | 32 * Fractional pixel coverage follows a similar flow. The coverage is initially t
he value specified |
32 * by setCoverage(). This is input to the first coverage stage. Coverage stages
are chained | 33 * by setCoverage(). This is input to the first coverage stage. Coverage stages
are chained |
33 * together in the same manner as color stages. The output of the last stage is
modulated by any | 34 * together in the same manner as color stages. The output of the last stage is
modulated by any |
34 * fractional coverage produced by anti-aliasing. This last step produces the fi
nal coverage, C. | 35 * fractional coverage produced by anti-aliasing. This last step produces the fi
nal coverage, C. |
35 * | 36 * |
36 * setXPFactory is used to control blending between the output color and dest. I
t also implements | 37 * setXPFactory is used to control blending between the output color and dest. I
t also implements |
37 * the application of fractional coverage from the coverage pipeline. | 38 * the application of fractional coverage from the coverage pipeline. |
38 */ | 39 */ |
39 class GrPaint { | 40 class GrPaint { |
40 public: | 41 public: |
41 GrPaint(); | 42 GrPaint(); |
42 | 43 |
43 GrPaint(const GrPaint& paint) { *this = paint; } | 44 GrPaint(const GrPaint& paint) { *this = paint; } |
44 | 45 |
45 ~GrPaint() { this->resetFragmentProcessors(); } | 46 ~GrPaint() { } |
46 | 47 |
47 /** | 48 /** |
48 * The initial color of the drawn primitive. Defaults to solid white. | 49 * The initial color of the drawn primitive. Defaults to solid white. |
49 */ | 50 */ |
50 void setColor(GrColor color) { fColor = color; } | 51 void setColor(GrColor color) { fColor = color; } |
51 GrColor getColor() const { return fColor; } | 52 GrColor getColor() const { return fColor; } |
52 | 53 |
53 /** | 54 /** |
54 * Should primitives be anti-aliased or not. Defaults to false. | 55 * Should primitives be anti-aliased or not. Defaults to false. |
55 */ | 56 */ |
(...skipping 16 matching lines...) Expand all Loading... |
72 | 73 |
73 /** | 74 /** |
74 * Should rendering be gamma-correct, end-to-end. Causes sRGB render targets
to behave | 75 * Should rendering be gamma-correct, end-to-end. Causes sRGB render targets
to behave |
75 * as such (with linear blending), and sRGB inputs to be filtered and decode
d correctly. | 76 * as such (with linear blending), and sRGB inputs to be filtered and decode
d correctly. |
76 */ | 77 */ |
77 void setGammaCorrect(bool gammaCorrect) { | 78 void setGammaCorrect(bool gammaCorrect) { |
78 setDisableOutputConversionToSRGB(!gammaCorrect); | 79 setDisableOutputConversionToSRGB(!gammaCorrect); |
79 setAllowSRGBInputs(gammaCorrect); | 80 setAllowSRGBInputs(gammaCorrect); |
80 } | 81 } |
81 | 82 |
82 const GrXPFactory* setXPFactory(const GrXPFactory* xpFactory) { | 83 void setXPFactory(sk_sp<GrXPFactory> xpFactory) { |
83 fXPFactory.reset(SkSafeRef(xpFactory)); | 84 fXPFactory = std::move(xpFactory); |
84 return xpFactory; | |
85 } | 85 } |
86 | 86 |
87 void setPorterDuffXPFactory(SkXfermode::Mode mode) { | 87 void setPorterDuffXPFactory(SkXfermode::Mode mode) { |
88 fXPFactory.reset(GrPorterDuffXPFactory::Create(mode)); | 88 fXPFactory = GrPorterDuffXPFactory::Make(mode); |
89 } | 89 } |
90 | 90 |
91 void setCoverageSetOpXPFactory(SkRegion::Op regionOp, bool invertCoverage =
false); | 91 void setCoverageSetOpXPFactory(SkRegion::Op regionOp, bool invertCoverage =
false); |
92 | 92 |
93 /** | 93 /** |
94 * Appends an additional color processor to the color computation. | 94 * Appends an additional color processor to the color computation. |
95 */ | 95 */ |
96 const GrFragmentProcessor* addColorFragmentProcessor(const GrFragmentProcess
or* fp) { | 96 void addColorFragmentProcessor(sk_sp<GrFragmentProcessor> fp) { |
97 SkASSERT(fp); | 97 SkASSERT(fp); |
98 fColorFragmentProcessors.push_back(SkRef(fp)); | 98 fColorFragmentProcessors.push_back(std::move(fp)); |
99 return fp; | |
100 } | 99 } |
101 | 100 |
102 /** | 101 /** |
103 * Appends an additional coverage processor to the coverage computation. | 102 * Appends an additional coverage processor to the coverage computation. |
104 */ | 103 */ |
105 const GrFragmentProcessor* addCoverageFragmentProcessor(const GrFragmentProc
essor* fp) { | 104 void addCoverageFragmentProcessor(sk_sp<GrFragmentProcessor> fp) { |
106 SkASSERT(fp); | 105 SkASSERT(fp); |
107 fCoverageFragmentProcessors.push_back(SkRef(fp)); | 106 fCoverageFragmentProcessors.push_back(std::move(fp)); |
108 return fp; | |
109 } | 107 } |
110 | 108 |
111 /** | 109 /** |
112 * Helpers for adding color or coverage effects that sample a texture. The m
atrix is applied | 110 * Helpers for adding color or coverage effects that sample a texture. The m
atrix is applied |
113 * to the src space position to compute texture coordinates. | 111 * to the src space position to compute texture coordinates. |
114 */ | 112 */ |
115 void addColorTextureProcessor(GrTexture*, const SkMatrix&); | 113 void addColorTextureProcessor(GrTexture*, const SkMatrix&); |
116 void addCoverageTextureProcessor(GrTexture*, const SkMatrix&); | 114 void addCoverageTextureProcessor(GrTexture*, const SkMatrix&); |
117 void addColorTextureProcessor(GrTexture*, const SkMatrix&, const GrTexturePa
rams&); | 115 void addColorTextureProcessor(GrTexture*, const SkMatrix&, const GrTexturePa
rams&); |
118 void addCoverageTextureProcessor(GrTexture*, const SkMatrix&, const GrTextur
eParams&); | 116 void addCoverageTextureProcessor(GrTexture*, const SkMatrix&, const GrTextur
eParams&); |
119 | 117 |
120 int numColorFragmentProcessors() const { return fColorFragmentProcessors.cou
nt(); } | 118 int numColorFragmentProcessors() const { return fColorFragmentProcessors.cou
nt(); } |
121 int numCoverageFragmentProcessors() const { return fCoverageFragmentProcesso
rs.count(); } | 119 int numCoverageFragmentProcessors() const { return fCoverageFragmentProcesso
rs.count(); } |
122 int numTotalFragmentProcessors() const { return this->numColorFragmentProces
sors() + | 120 int numTotalFragmentProcessors() const { return this->numColorFragmentProces
sors() + |
123 this->numCoverageFragmentProcessor
s(); } | 121 this->numCoverageFragmentProcessor
s(); } |
124 | 122 |
125 const GrXPFactory* getXPFactory() const { | 123 GrXPFactory* getXPFactory() const { |
126 return fXPFactory; | 124 return fXPFactory.get(); |
127 } | 125 } |
128 | 126 |
129 const GrFragmentProcessor* getColorFragmentProcessor(int i) const { | 127 GrFragmentProcessor* getColorFragmentProcessor(int i) const { |
130 return fColorFragmentProcessors[i]; | 128 return fColorFragmentProcessors[i].get(); |
131 } | 129 } |
132 const GrFragmentProcessor* getCoverageFragmentProcessor(int i) const { | 130 GrFragmentProcessor* getCoverageFragmentProcessor(int i) const { |
133 return fCoverageFragmentProcessors[i]; | 131 return fCoverageFragmentProcessors[i].get(); |
134 } | 132 } |
135 | 133 |
136 GrPaint& operator=(const GrPaint& paint) { | 134 GrPaint& operator=(const GrPaint& paint) { |
137 fAntiAlias = paint.fAntiAlias; | 135 fAntiAlias = paint.fAntiAlias; |
138 fDisableOutputConversionToSRGB = paint.fDisableOutputConversionToSRGB; | 136 fDisableOutputConversionToSRGB = paint.fDisableOutputConversionToSRGB; |
139 fAllowSRGBInputs = paint.fAllowSRGBInputs; | 137 fAllowSRGBInputs = paint.fAllowSRGBInputs; |
140 | 138 |
141 fColor = paint.fColor; | 139 fColor = paint.fColor; |
142 this->resetFragmentProcessors(); | |
143 fColorFragmentProcessors = paint.fColorFragmentProcessors; | 140 fColorFragmentProcessors = paint.fColorFragmentProcessors; |
144 fCoverageFragmentProcessors = paint.fCoverageFragmentProcessors; | 141 fCoverageFragmentProcessors = paint.fCoverageFragmentProcessors; |
145 for (int i = 0; i < fColorFragmentProcessors.count(); ++i) { | |
146 fColorFragmentProcessors[i]->ref(); | |
147 } | |
148 for (int i = 0; i < fCoverageFragmentProcessors.count(); ++i) { | |
149 fCoverageFragmentProcessors[i]->ref(); | |
150 } | |
151 | 142 |
152 fXPFactory.reset(SkSafeRef(paint.getXPFactory())); | 143 fXPFactory = paint.fXPFactory; |
153 | 144 |
154 return *this; | 145 return *this; |
155 } | 146 } |
156 | 147 |
157 /** | 148 /** |
158 * Returns true if the paint's output color will be constant after blending.
If the result is | 149 * Returns true if the paint's output color will be constant after blending.
If the result is |
159 * true, constantColor will be updated to contain the constant color. Note t
hat we can conflate | 150 * true, constantColor will be updated to contain the constant color. Note t
hat we can conflate |
160 * coverage and color, so the actual values written to pixels with partial c
overage may still | 151 * coverage and color, so the actual values written to pixels with partial c
overage may still |
161 * not seem constant, even if this function returns true. | 152 * not seem constant, even if this function returns true. |
162 */ | 153 */ |
163 bool isConstantBlendedColor(GrColor* constantColor) const; | 154 bool isConstantBlendedColor(GrColor* constantColor) const; |
164 | 155 |
165 private: | 156 private: |
166 void resetFragmentProcessors() { | 157 mutable sk_sp<GrXPFactory> fXPFactory; |
167 for (int i = 0; i < fColorFragmentProcessors.count(); ++i) { | 158 SkSTArray<4, sk_sp<GrFragmentProcessor>> fColorFragmentProcessors; |
168 fColorFragmentProcessors[i]->unref(); | 159 SkSTArray<2, sk_sp<GrFragmentProcessor>> fCoverageFragmentProcessors; |
169 } | |
170 for (int i = 0; i < fCoverageFragmentProcessors.count(); ++i) { | |
171 fCoverageFragmentProcessors[i]->unref(); | |
172 } | |
173 fColorFragmentProcessors.reset(); | |
174 fCoverageFragmentProcessors.reset(); | |
175 } | |
176 | 160 |
177 mutable SkAutoTUnref<const GrXPFactory> fXPFactory; | 161 bool fAntiAlias; |
178 SkSTArray<4, const GrFragmentProcessor*, true> fColorFragmentProcessors; | 162 bool fDisableOutputConversionToSRGB; |
179 SkSTArray<2, const GrFragmentProcessor*, true> fCoverageFragmentProcessors; | 163 bool fAllowSRGBInputs; |
180 | 164 |
181 bool fAntiAlias; | 165 GrColor fColor; |
182 bool fDisableOutputConversionToSR
GB; | |
183 bool fAllowSRGBInputs; | |
184 | |
185 GrColor fColor; | |
186 }; | 166 }; |
187 | 167 |
188 #endif | 168 #endif |
OLD | NEW |