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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 GrBackendProcessorFactory_DEFINED | 8 #ifndef GrBackendProcessorFactory_DEFINED |
9 #define GrBackendProcessorFactory_DEFINED | 9 #define GrBackendProcessorFactory_DEFINED |
10 | 10 |
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61 * | 61 * |
62 * const GrBackendProcessorFactory& MyProcessor::getFactory() const { | 62 * const GrBackendProcessorFactory& MyProcessor::getFactory() const { |
63 * return GrTBackendProcessorFactory<MyProcessor>::getInstance(); | 63 * return GrTBackendProcessorFactory<MyProcessor>::getInstance(); |
64 * } | 64 * } |
65 * | 65 * |
66 * Using GrTBackendProcessorFactory places a few constraints on the processor. S
ee that class's | 66 * Using GrTBackendProcessorFactory places a few constraints on the processor. S
ee that class's |
67 * comments. | 67 * comments. |
68 */ | 68 */ |
69 class GrBackendProcessorFactory : SkNoncopyable { | 69 class GrBackendProcessorFactory : SkNoncopyable { |
70 public: | 70 public: |
| 71 /** |
| 72 * Generates an processor's key. The key is based on the aspects of the GrPr
ocessor object's |
| 73 * configuration that affect GLSL code generation. Two GrProcessor instances
that would cause |
| 74 * this->createGLInstance()->emitCode() to produce different code must produ
ce different keys. |
| 75 */ |
| 76 virtual void getGLProcessorKey(const GrProcessor&, const GrGLCaps&, |
| 77 GrProcessorKeyBuilder*) const = 0; |
| 78 |
71 /** | 79 /** |
72 * Produces a human-reable name for the v. | 80 * Produces a human-reable name for the v. |
73 */ | 81 */ |
74 virtual const char* name() const = 0; | 82 virtual const char* name() const = 0; |
75 | 83 |
76 /** | 84 /** |
77 * A unique value for every instance of this factory. It is automatically in
corporated into the | 85 * A unique value for every instance of this factory. It is automatically in
corporated into the |
78 * processor's key. This allows keys generated by getGLProcessorKey() to onl
y be unique within a | 86 * processor's key. This allows keys generated by getGLProcessorKey() to onl
y be unique within a |
79 * GrProcessor subclass and not necessarily across subclasses. | 87 * GrProcessor subclass and not necessarily across subclasses. |
80 */ | 88 */ |
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113 class GrGLXferProcessor; | 121 class GrGLXferProcessor; |
114 | 122 |
115 /** | 123 /** |
116 * Backend processor factory cannot actually create anything, it is up to subcla
sses to implement | 124 * Backend processor factory cannot actually create anything, it is up to subcla
sses to implement |
117 * a create binding which matches Gr to GL in a type safe way | 125 * a create binding which matches Gr to GL in a type safe way |
118 */ | 126 */ |
119 | 127 |
120 class GrBackendFragmentProcessorFactory : public GrBackendProcessorFactory { | 128 class GrBackendFragmentProcessorFactory : public GrBackendProcessorFactory { |
121 public: | 129 public: |
122 /** | 130 /** |
123 * Generates an processor's key. The key is based on the aspects of the GrPr
ocessor object's | |
124 * configuration that affect GLSL code generation. Two GrProcessor instances
that would cause | |
125 * this->createGLInstance()->emitCode() to produce different code must produ
ce different keys. | |
126 */ | |
127 virtual void getGLProcessorKey(const GrFragmentProcessor&, | |
128 const GrGLCaps&, | |
129 GrProcessorKeyBuilder*) const = 0; | |
130 | |
131 /** | |
132 * Creates a GrGLProcessor instance that is used both to generate code for t
he GrProcessor in a | 131 * Creates a GrGLProcessor instance that is used both to generate code for t
he GrProcessor in a |
133 * GLSL program and to manage updating uniforms for the program when it is u
sed. | 132 * GLSL program and to manage updating uniforms for the program when it is u
sed. |
134 */ | 133 */ |
135 virtual GrGLFragmentProcessor* createGLInstance(const GrFragmentProcessor&)
const = 0; | 134 virtual GrGLFragmentProcessor* createGLInstance(const GrFragmentProcessor&)
const = 0; |
136 }; | 135 }; |
137 | 136 |
138 class GrBackendXferProcessorFactory : public GrBackendProcessorFactory { | 137 class GrBackendXferProcessorFactory : public GrBackendProcessorFactory { |
139 public: | 138 public: |
140 /** | 139 /** |
141 * Creates a GrGLProcessor instance that is used both to generate code for t
he GrProcessor in a | 140 * Creates a GrGLProcessor instance that is used both to generate code for t
he GrProcessor in a |
142 * GLSL program and to manage updating uniforms for the program when it is u
sed. | 141 * GLSL program and to manage updating uniforms for the program when it is u
sed. |
143 */ | 142 */ |
144 virtual GrGLXferProcessor* createGLInstance(const GrXferProcessor&) const =
0; | 143 virtual GrGLXferProcessor* createGLInstance(const GrXferProcessor&) const =
0; |
145 }; | 144 }; |
146 | 145 |
147 class GrBatchTracker; | |
148 | |
149 class GrBackendGeometryProcessorFactory : public GrBackendProcessorFactory { | 146 class GrBackendGeometryProcessorFactory : public GrBackendProcessorFactory { |
150 public: | 147 public: |
151 /** | 148 /** |
152 * Generates an processor's key. The key is based on the aspects of the GrPr
ocessor object's | |
153 * configuration that affect GLSL code generation. Two GrProcessor instances
that would cause | |
154 * this->createGLInstance()->emitCode() to produce different code must produ
ce different keys. | |
155 */ | |
156 virtual void getGLProcessorKey(const GrGeometryProcessor&, | |
157 const GrBatchTracker&, | |
158 const GrGLCaps&, | |
159 GrProcessorKeyBuilder*) const = 0; | |
160 | |
161 /** | |
162 * Creates a GrGLProcessor instance that is used both to generate code for t
he GrProcessor in a | 149 * Creates a GrGLProcessor instance that is used both to generate code for t
he GrProcessor in a |
163 * GLSL program and to manage updating uniforms for the program when it is u
sed. | 150 * GLSL program and to manage updating uniforms for the program when it is u
sed. |
164 */ | 151 */ |
165 virtual GrGLGeometryProcessor* createGLInstance(const GrGeometryProcessor&, | 152 virtual GrGLGeometryProcessor* createGLInstance(const GrGeometryProcessor&)
const = 0; |
166 const GrBatchTracker&) const
= 0; | |
167 }; | 153 }; |
168 | 154 |
169 #endif | 155 #endif |
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