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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 GrTextureDomainEffect_DEFINED | 8 #ifndef GrTextureDomainEffect_DEFINED |
9 #define GrTextureDomainEffect_DEFINED | 9 #define GrTextureDomainEffect_DEFINED |
10 | 10 |
11 #include "GrSingleTextureEffect.h" | 11 #include "GrSingleTextureEffect.h" |
12 #include "gl/GrGLFragmentProcessor.h" | 12 #include "gl/GrGLFragmentProcessor.h" |
| 13 #include "glsl/GrGLSLProgramDataManager.h" |
13 | 14 |
14 class GrGLProgramBuilder; | 15 class GrGLProgramBuilder; |
15 class GrGLShaderBuilder; | 16 class GrGLShaderBuilder; |
16 class GrInvariantOutput; | 17 class GrInvariantOutput; |
17 struct SkRect; | 18 struct SkRect; |
18 | 19 |
19 /** | 20 /** |
20 * Limits a texture's lookup coordinates to a domain. Samples outside the domain
are either clamped | 21 * Limits a texture's lookup coordinates to a domain. Samples outside the domain
are either clamped |
21 * the edge of the domain or result in a vec4 of zeros (decal mode). The domain
is clipped to | 22 * the edge of the domain or result in a vec4 of zeros (decal mode). The domain
is clipped to |
22 * normalized texture coords ([0,1]x[0,1] square). Bilinear filtering can cause
texels outside the | 23 * normalized texture coords ([0,1]x[0,1] square). Bilinear filtering can cause
texels outside the |
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115 const GrTextureDomain& textureDomain, | 116 const GrTextureDomain& textureDomain, |
116 const char* outColor, | 117 const char* outColor, |
117 const SkString& inCoords, | 118 const SkString& inCoords, |
118 const GrGLProcessor::TextureSampler sampler, | 119 const GrGLProcessor::TextureSampler sampler, |
119 const char* inModulateColor = nullptr); | 120 const char* inModulateColor = nullptr); |
120 | 121 |
121 /** | 122 /** |
122 * Call this from GrGLProcessor::setData() to upload uniforms necessary
for the texture | 123 * Call this from GrGLProcessor::setData() to upload uniforms necessary
for the texture |
123 * domain. The rectangle is automatically adjusted to account for the te
xture's origin. | 124 * domain. The rectangle is automatically adjusted to account for the te
xture's origin. |
124 */ | 125 */ |
125 void setData(const GrGLProgramDataManager& pdman, const GrTextureDomain&
textureDomain, | 126 void setData(const GrGLSLProgramDataManager& pdman, const GrTextureDomai
n& textureDomain, |
126 GrSurfaceOrigin textureOrigin); | 127 GrSurfaceOrigin textureOrigin); |
127 | 128 |
128 enum { | 129 enum { |
129 kDomainKeyBits = 2, // See DomainKey(). | 130 kDomainKeyBits = 2, // See DomainKey(). |
130 }; | 131 }; |
131 | 132 |
132 /** | 133 /** |
133 * GrGLProcessor::GenKey() must call this and include the returned value
in it's computed | 134 * GrGLProcessor::GenKey() must call this and include the returned value
in it's computed |
134 * key. The returned will be limited to the lower kDomainKeyBits bits. | 135 * key. The returned will be limited to the lower kDomainKeyBits bits. |
135 */ | 136 */ |
136 static uint32_t DomainKey(const GrTextureDomain& domain) { | 137 static uint32_t DomainKey(const GrTextureDomain& domain) { |
137 GR_STATIC_ASSERT(kModeCount <= 4); | 138 GR_STATIC_ASSERT(kModeCount <= 4); |
138 return domain.mode(); | 139 return domain.mode(); |
139 } | 140 } |
140 | 141 |
141 private: | 142 private: |
142 static const int kPrevDomainCount = 4; | 143 static const int kPrevDomainCount = 4; |
143 SkDEBUGCODE(Mode fMode;) | 144 SkDEBUGCODE(Mode fMode;) |
144 GrGLProgramDataManager::UniformHandle fDomainUni; | 145 GrGLSLProgramDataManager::UniformHandle fDomainUni; |
145 SkString fDomainName; | 146 SkString fDomainName; |
146 GrGLfloat fPrevDomain[kPrevDomainCount]; | 147 float fPrevDomain[kPrevDomainCount]; |
147 }; | 148 }; |
148 | 149 |
149 protected: | 150 protected: |
150 Mode fMode; | 151 Mode fMode; |
151 SkRect fDomain; | 152 SkRect fDomain; |
152 int fIndex; | 153 int fIndex; |
153 | 154 |
154 typedef GrSingleTextureEffect INHERITED; | 155 typedef GrSingleTextureEffect INHERITED; |
155 }; | 156 }; |
156 | 157 |
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191 bool onIsEqual(const GrFragmentProcessor&) const override; | 192 bool onIsEqual(const GrFragmentProcessor&) const override; |
192 | 193 |
193 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; | 194 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
194 | 195 |
195 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; | 196 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
196 | 197 |
197 typedef GrSingleTextureEffect INHERITED; | 198 typedef GrSingleTextureEffect INHERITED; |
198 }; | 199 }; |
199 | 200 |
200 #endif | 201 #endif |
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