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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 GrGLProgramDesc_DEFINED | 8 #ifndef GrGLProgramDesc_DEFINED |
9 #define GrGLProgramDesc_DEFINED | 9 #define GrGLProgramDesc_DEFINED |
10 | 10 |
11 #include "GrGLProcessor.h" | 11 #include "GrGLProcessor.h" |
12 #include "GrDrawState.h" | 12 #include "GrDrawState.h" |
13 #include "GrGpu.h" | 13 #include "GrGpu.h" |
14 #include "GrOptDrawState.h" | 14 #include "GrOptDrawState.h" |
15 | 15 |
16 class GrGpuGL; | 16 class GrGpuGL; |
17 | 17 |
18 #ifdef SK_DEBUG | |
19 // Optionally compile the experimental GS code. Set to SK_DEBUG so that debug
build bots will | |
20 // execute the code. | |
21 #define GR_GL_EXPERIMENTAL_GS 1 | |
22 #else | |
23 #define GR_GL_EXPERIMENTAL_GS 0 | |
24 #endif | |
25 | |
26 | |
27 /** This class describes a program to generate. It also serves as a program cach
e key. Very little | 18 /** This class describes a program to generate. It also serves as a program cach
e key. Very little |
28 of this is GL-specific. The GL-specific parts could be factored out into a s
ubclass. */ | 19 of this is GL-specific. The GL-specific parts could be factored out into a s
ubclass. */ |
29 class GrGLProgramDesc { | 20 class GrGLProgramDesc { |
30 public: | 21 public: |
31 GrGLProgramDesc() {} | 22 GrGLProgramDesc() {} |
32 GrGLProgramDesc(const GrGLProgramDesc& desc) { *this = desc; } | 23 GrGLProgramDesc(const GrGLProgramDesc& desc) { *this = desc; } |
33 | 24 |
34 // Returns this as a uint32_t array to be used as a key in the program cache
. | 25 // Returns this as a uint32_t array to be used as a key in the program cache
. |
35 const uint32_t* asKey() const { | 26 const uint32_t* asKey() const { |
36 return reinterpret_cast<const uint32_t*>(fKey.begin()); | 27 return reinterpret_cast<const uint32_t*>(fKey.begin()); |
37 } | 28 } |
38 | 29 |
39 // Gets the number of bytes in asKey(). It will be a 4-byte aligned value. W
hen comparing two | 30 // Gets the number of bytes in asKey(). It will be a 4-byte aligned value. W
hen comparing two |
40 // keys the size of either key can be used with memcmp() since the lengths t
hemselves begin the | 31 // keys the size of either key can be used with memcmp() since the lengths t
hemselves begin the |
41 // keys and thus the memcmp will exit early if the keys are of different len
gths. | 32 // keys and thus the memcmp will exit early if the keys are of different len
gths. |
42 uint32_t keyLength() const { return *this->atOffset<uint32_t, kLengthOffset>
(); } | 33 uint32_t keyLength() const { return *this->atOffset<uint32_t, kLengthOffset>
(); } |
43 | 34 |
44 // Gets the a checksum of the key. Can be used as a hash value for a fast lo
okup in a cache. | 35 // Gets the a checksum of the key. Can be used as a hash value for a fast lo
okup in a cache. |
45 uint32_t getChecksum() const { return *this->atOffset<uint32_t, kChecksumOff
set>(); } | 36 uint32_t getChecksum() const { return *this->atOffset<uint32_t, kChecksumOff
set>(); } |
46 | 37 |
47 // For unit testing. | |
48 bool setRandom(SkRandom*, | |
49 GrGpuGL*, | |
50 const GrRenderTarget* dummyDstRenderTarget, | |
51 const GrTexture* dummyDstCopyTexture, | |
52 const GrGeometryStage* geometryProcessor, | |
53 const GrFragmentStage* stages[], | |
54 int numColorStages, | |
55 int numCoverageStages, | |
56 int currAttribIndex, | |
57 GrGpu::DrawType); | |
58 | |
59 /** | 38 /** |
60 * Builds a program descriptor from a GrOptDrawState. Whether the primitive
type is points, and | 39 * Builds a program descriptor from a GrOptDrawState. Whether the primitive
type is points, and |
61 * the caps of the GrGpuGL are also inputs. It also outputs the color and co
verage stages | 40 * the caps of the GrGpuGL are also inputs. It also outputs the color and co
verage stages |
62 * referenced by the generated descriptor. Coverage stages from the drawStat
e may be treated as | 41 * referenced by the generated descriptor. Coverage stages from the drawStat
e may be treated as |
63 * color stages in the output. | 42 * color stages in the output. |
64 */ | 43 */ |
65 static bool Build(const GrOptDrawState&, | 44 static bool Build(const GrOptDrawState&, |
66 GrGpu::DrawType, | 45 GrGpu::DrawType, |
67 GrBlendCoeff srcCoeff, | 46 GrBlendCoeff srcCoeff, |
68 GrBlendCoeff dstCoeff, | 47 GrBlendCoeff dstCoeff, |
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122 | 101 |
123 SkBool8 fUseFragShaderOnly; | 102 SkBool8 fUseFragShaderOnly; |
124 SkBool8 fEmitsPointSize; | 103 SkBool8 fEmitsPointSize; |
125 | 104 |
126 ColorInput fColorInput : 8; | 105 ColorInput fColorInput : 8; |
127 ColorInput fCoverageInput : 8; | 106 ColorInput fCoverageInput : 8; |
128 | 107 |
129 GrOptDrawState::PrimaryOutputType fPrimaryOutputType : 8; | 108 GrOptDrawState::PrimaryOutputType fPrimaryOutputType : 8; |
130 GrOptDrawState::SecondaryOutputType fSecondaryOutputType : 8; | 109 GrOptDrawState::SecondaryOutputType fSecondaryOutputType : 8; |
131 | 110 |
132 | |
133 // To enable experimental geometry shader code (not for use in | |
134 // production) | |
135 #if GR_GL_EXPERIMENTAL_GS | |
136 SkBool8 fExperimentalGS; | |
137 #endif | |
138 | |
139 int8_t fPositionAttributeIndex; | 111 int8_t fPositionAttributeIndex; |
140 int8_t fLocalCoordAttributeIndex; | 112 int8_t fLocalCoordAttributeIndex; |
141 int8_t fColorAttributeIndex; | 113 int8_t fColorAttributeIndex; |
142 int8_t fCoverageAttributeIndex; | 114 int8_t fCoverageAttributeIndex; |
143 | 115 |
144 SkBool8 fHasGeometryProcessor; | 116 SkBool8 fHasGeometryProcessor; |
145 int8_t fColorEffectCnt; | 117 int8_t fColorEffectCnt; |
146 int8_t fCoverageEffectCnt; | 118 int8_t fCoverageEffectCnt; |
147 }; | 119 }; |
148 | 120 |
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169 template<typename T, size_t OFFSET> T* atOffset() { | 141 template<typename T, size_t OFFSET> T* atOffset() { |
170 return reinterpret_cast<T*>(reinterpret_cast<intptr_t>(fKey.begin()) + O
FFSET); | 142 return reinterpret_cast<T*>(reinterpret_cast<intptr_t>(fKey.begin()) + O
FFSET); |
171 } | 143 } |
172 | 144 |
173 template<typename T, size_t OFFSET> const T* atOffset() const { | 145 template<typename T, size_t OFFSET> const T* atOffset() const { |
174 return reinterpret_cast<const T*>(reinterpret_cast<intptr_t>(fKey.begin(
)) + OFFSET); | 146 return reinterpret_cast<const T*>(reinterpret_cast<intptr_t>(fKey.begin(
)) + OFFSET); |
175 } | 147 } |
176 | 148 |
177 KeyHeader* header() { return this->atOffset<KeyHeader, kHeaderOffset>(); } | 149 KeyHeader* header() { return this->atOffset<KeyHeader, kHeaderOffset>(); } |
178 | 150 |
179 // Shared code between setRandom() and Build(). | 151 // a helper class to handle getting an individual processor's key |
180 static bool GetProcessorKey(const GrProcessorStage& stage, | 152 template <class ProcessorKeyBuilder> |
181 const GrGLCaps& caps, | 153 static bool BuildStagedProcessorKey(const typename ProcessorKeyBuilder::Stag
edProcessor& stage, |
182 bool useExplicitLocalCoords, | |
183 GrProcessorKeyBuilder* b, | |
184 uint16_t* effectKeySize); | |
185 | |
186 static bool GetGeometryProcessorKey(const GrGeometryStage& stage, | |
187 const GrGLCaps& caps, | 154 const GrGLCaps& caps, |
188 bool useExplicitLocalCoords, | 155 bool requiresLocalCoordAttrib, |
189 GrProcessorKeyBuilder* b, | 156 GrGLProgramDesc* desc, |
190 uint16_t* effectKeySize); | 157 int* offsetAndSizeIndex); |
191 void finalize(); | 158 void finalize(); |
192 | 159 |
193 const KeyHeader& getHeader() const { return *this->atOffset<KeyHeader, kHead
erOffset>(); } | 160 const KeyHeader& getHeader() const { return *this->atOffset<KeyHeader, kHead
erOffset>(); } |
194 | 161 |
195 /** Used to provide effects' keys to their emitCode() function. */ | 162 /** Used to provide effects' keys to their emitCode() function. */ |
196 class EffectKeyProvider { | 163 class EffectKeyProvider { |
197 public: | 164 public: |
198 enum EffectType { | 165 enum EffectType { |
199 kGeometryProcessor_EffectType, | 166 kGeometryProcessor_EffectType, |
200 kColor_EffectType, | 167 kColor_EffectType, |
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247 // visible to GrGLProcessors. Then make public accessors as necessary and re
move friends. | 214 // visible to GrGLProcessors. Then make public accessors as necessary and re
move friends. |
248 friend class GrGLProgram; | 215 friend class GrGLProgram; |
249 friend class GrGLProgramBuilder; | 216 friend class GrGLProgramBuilder; |
250 friend class GrGLLegacyNvprProgramBuilder; | 217 friend class GrGLLegacyNvprProgramBuilder; |
251 friend class GrGLVertexBuilder; | 218 friend class GrGLVertexBuilder; |
252 friend class GrGLFragmentShaderBuilder; | 219 friend class GrGLFragmentShaderBuilder; |
253 friend class GrGLGeometryBuilder; | 220 friend class GrGLGeometryBuilder; |
254 }; | 221 }; |
255 | 222 |
256 #endif | 223 #endif |
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