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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 GrPrimitiveProcessor_DEFINED | 8 #ifndef GrPrimitiveProcessor_DEFINED |
| 9 #define GrPrimitiveProcessor_DEFINED | 9 #define GrPrimitiveProcessor_DEFINED |
| 10 | 10 |
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| 40 * can be updated alongside the GrBatchTracker struct itself, ultimately allowin
g the | 40 * can be updated alongside the GrBatchTracker struct itself, ultimately allowin
g the |
| 41 * GrPrimitiveProcessor complete control of how it gets data into the fragment s
hader as long as | 41 * GrPrimitiveProcessor complete control of how it gets data into the fragment s
hader as long as |
| 42 * it emits the appropriate color, or none at all, as directed. | 42 * it emits the appropriate color, or none at all, as directed. |
| 43 */ | 43 */ |
| 44 | 44 |
| 45 class GrGLSLCaps; | 45 class GrGLSLCaps; |
| 46 class GrGLSLPrimitiveProcessor; | 46 class GrGLSLPrimitiveProcessor; |
| 47 | 47 |
| 48 struct GrInitInvariantOutput; | 48 struct GrInitInvariantOutput; |
| 49 | 49 |
| 50 // Describes the state of pixel local storage with respect to the current draw. | 50 // Describes the state of pixel local storage with respect to the current draw. |
| 51 enum GrPixelLocalStorageState { | 51 enum GrPixelLocalStorageState { |
| 52 // The draw is actively updating PLS. | 52 // The draw is actively updating PLS. |
| 53 kDraw_GrPixelLocalStorageState, | 53 kDraw_GrPixelLocalStorageState, |
| 54 // The draw is a "finish" operation which is reading from PLS and writing co
lor. | 54 // The draw is a "finish" operation which is reading from PLS and writing co
lor. |
| 55 kFinish_GrPixelLocalStorageState, | 55 kFinish_GrPixelLocalStorageState, |
| 56 // The draw does not use PLS. | 56 // The draw does not use PLS. |
| 57 kDisabled_GrPixelLocalStorageState | 57 kDisabled_GrPixelLocalStorageState |
| 58 }; | 58 }; |
| 59 | 59 |
| 60 /* | 60 /* |
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| 201 virtual GrGLSLPrimitiveProcessor* createGLSLInstance(const GrGLSLCaps& caps)
const = 0; | 201 virtual GrGLSLPrimitiveProcessor* createGLSLInstance(const GrGLSLCaps& caps)
const = 0; |
| 202 | 202 |
| 203 virtual bool isPathRendering() const { return false; } | 203 virtual bool isPathRendering() const { return false; } |
| 204 | 204 |
| 205 /** | 205 /** |
| 206 * No Local Coord Transformation is needed in the shader, instead transforme
d local coords will | 206 * No Local Coord Transformation is needed in the shader, instead transforme
d local coords will |
| 207 * be provided via vertex attribute. | 207 * be provided via vertex attribute. |
| 208 */ | 208 */ |
| 209 virtual bool hasTransformedLocalCoords() const = 0; | 209 virtual bool hasTransformedLocalCoords() const = 0; |
| 210 | 210 |
| 211 virtual GrPixelLocalStorageState getPixelLocalStorageState() const { | 211 virtual GrPixelLocalStorageState getPixelLocalStorageState() const { |
| 212 return kDisabled_GrPixelLocalStorageState; | 212 return kDisabled_GrPixelLocalStorageState; |
| 213 } | 213 } |
| 214 | 214 |
| 215 /** | 215 /** |
| 216 * If non-null, overrides the dest color returned by GrGLSLFragmentShaderBui
lder::dstColor(). | 216 * If non-null, overrides the dest color returned by GrGLSLFragmentShaderBui
lder::dstColor(). |
| 217 */ | 217 */ |
| 218 virtual const char* getDestColorOverride() const { return nullptr; } | 218 virtual const char* getDestColorOverride() const { return nullptr; } |
| 219 | 219 |
| 220 virtual float getSampleShading() const { | 220 virtual float getSampleShading() const { |
| 221 return 0.0; | 221 return 0.0; |
| 222 } | 222 } |
| 223 | 223 |
| 224 protected: | 224 protected: |
| 225 GrPrimitiveProcessor() : fVertexStride(0) {} | 225 GrPrimitiveProcessor() : fVertexStride(0) {} |
| 226 | 226 |
| 227 enum { kPreallocAttribCnt = 8 }; | 227 enum { kPreallocAttribCnt = 8 }; |
| 228 SkSTArray<kPreallocAttribCnt, Attribute> fAttribs; | 228 SkSTArray<kPreallocAttribCnt, Attribute> fAttribs; |
| 229 size_t fVertexStride; | 229 size_t fVertexStride; |
| 230 | 230 |
| 231 private: | 231 private: |
| 232 void notifyRefCntIsZero() const final {}; | 232 void notifyRefCntIsZero() const final {}; |
| 233 virtual bool hasExplicitLocalCoords() const = 0; | 233 virtual bool hasExplicitLocalCoords() const = 0; |
| 234 | 234 |
| 235 typedef GrProcessor INHERITED; | 235 typedef GrProcessor INHERITED; |
| 236 }; | 236 }; |
| 237 | 237 |
| 238 #endif | 238 #endif |
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