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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 GrGeometryProcessor_DEFINED | 8 #ifndef GrGeometryProcessor_DEFINED |
9 #define GrGeometryProcessor_DEFINED | 9 #define GrGeometryProcessor_DEFINED |
10 | 10 |
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162 const GrGLCaps& caps, | 162 const GrGLCaps& caps, |
163 GrProcessorKeyBuilder* b) const = 0; | 163 GrProcessorKeyBuilder* b) const = 0; |
164 | 164 |
165 | 165 |
166 /** Returns a new instance of the appropriate *GL* implementation class | 166 /** Returns a new instance of the appropriate *GL* implementation class |
167 for the given GrProcessor; caller is responsible for deleting | 167 for the given GrProcessor; caller is responsible for deleting |
168 the object. */ | 168 the object. */ |
169 virtual GrGLPrimitiveProcessor* createGLInstance(const GrBatchTracker& bt, | 169 virtual GrGLPrimitiveProcessor* createGLInstance(const GrBatchTracker& bt, |
170 const GrGLCaps& caps) const
= 0; | 170 const GrGLCaps& caps) const
= 0; |
171 | 171 |
| 172 bool isPathRendering() const { return fIsPathRendering; } |
| 173 |
172 protected: | 174 protected: |
173 GrPrimitiveProcessor(const SkMatrix& viewMatrix, const SkMatrix& localMatrix
) | 175 GrPrimitiveProcessor(const SkMatrix& viewMatrix, const SkMatrix& localMatrix
, |
| 176 bool isPathRendering) |
174 : fNumAttribs(0) | 177 : fNumAttribs(0) |
175 , fVertexStride(0) | 178 , fVertexStride(0) |
176 , fViewMatrix(viewMatrix) | 179 , fViewMatrix(viewMatrix) |
177 , fLocalMatrix(localMatrix) {} | 180 , fLocalMatrix(localMatrix) |
| 181 , fIsPathRendering(isPathRendering) {} |
178 | 182 |
179 /* | 183 /* |
180 * CanCombineOutput will return true if two draws are 'batchable' from a col
or perspective. | 184 * CanCombineOutput will return true if two draws are 'batchable' from a col
or perspective. |
181 * TODO remove this when GPs can upgrade to attribute color | 185 * TODO remove this when GPs can upgrade to attribute color |
182 */ | 186 */ |
183 static bool CanCombineOutput(GrGPInput left, GrColor lColor, GrGPInput right
, GrColor rColor) { | 187 static bool CanCombineOutput(GrGPInput left, GrColor lColor, GrGPInput right
, GrColor rColor) { |
184 if (left != right) { | 188 if (left != right) { |
185 return false; | 189 return false; |
186 } | 190 } |
187 | 191 |
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208 | 212 |
209 Attribute fAttribs[kMaxVertexAttribs]; | 213 Attribute fAttribs[kMaxVertexAttribs]; |
210 int fNumAttribs; | 214 int fNumAttribs; |
211 size_t fVertexStride; | 215 size_t fVertexStride; |
212 | 216 |
213 private: | 217 private: |
214 virtual bool hasExplicitLocalCoords() const = 0; | 218 virtual bool hasExplicitLocalCoords() const = 0; |
215 | 219 |
216 const SkMatrix fViewMatrix; | 220 const SkMatrix fViewMatrix; |
217 SkMatrix fLocalMatrix; | 221 SkMatrix fLocalMatrix; |
| 222 bool fIsPathRendering; |
218 | 223 |
219 typedef GrProcessor INHERITED; | 224 typedef GrProcessor INHERITED; |
220 }; | 225 }; |
221 | 226 |
222 /** | 227 /** |
223 * A GrGeometryProcessor is a flexible method for rendering a primitive. The Gr
GeometryProcessor | 228 * A GrGeometryProcessor is a flexible method for rendering a primitive. The Gr
GeometryProcessor |
224 * has complete control over vertex attributes and uniforms(aside from the rende
r target) but it | 229 * has complete control over vertex attributes and uniforms(aside from the rende
r target) but it |
225 * must obey the same contract as any GrPrimitiveProcessor, specifically it must
emit a color and | 230 * must obey the same contract as any GrPrimitiveProcessor, specifically it must
emit a color and |
226 * coverage into the fragment shader. Where this color and coverage come from i
s completely the | 231 * coverage into the fragment shader. Where this color and coverage come from i
s completely the |
227 * responsibility of the GrGeometryProcessor. | 232 * responsibility of the GrGeometryProcessor. |
228 */ | 233 */ |
229 class GrGeometryProcessor : public GrPrimitiveProcessor { | 234 class GrGeometryProcessor : public GrPrimitiveProcessor { |
230 public: | 235 public: |
231 // TODO the Hint can be handled in a much more clean way when we have deferr
ed geometry or | 236 // TODO the Hint can be handled in a much more clean way when we have deferr
ed geometry or |
232 // atleast bundles | 237 // atleast bundles |
233 GrGeometryProcessor(GrColor color, | 238 GrGeometryProcessor(GrColor color, |
234 const SkMatrix& viewMatrix = SkMatrix::I(), | 239 const SkMatrix& viewMatrix = SkMatrix::I(), |
235 const SkMatrix& localMatrix = SkMatrix::I(), | 240 const SkMatrix& localMatrix = SkMatrix::I(), |
236 bool opaqueVertexColors = false) | 241 bool opaqueVertexColors = false) |
237 : INHERITED(viewMatrix, localMatrix) | 242 : INHERITED(viewMatrix, localMatrix, false) |
238 , fColor(color) | 243 , fColor(color) |
239 , fOpaqueVertexColors(opaqueVertexColors) | 244 , fOpaqueVertexColors(opaqueVertexColors) |
240 , fWillUseGeoShader(false) | 245 , fWillUseGeoShader(false) |
241 , fHasVertexColor(false) | 246 , fHasVertexColor(false) |
242 , fHasLocalCoords(false) {} | 247 , fHasLocalCoords(false) {} |
243 | 248 |
244 bool willUseGeoShader() const { return fWillUseGeoShader; } | 249 bool willUseGeoShader() const { return fWillUseGeoShader; } |
245 | 250 |
246 /* | 251 /* |
247 * In an ideal world, two GrGeometryProcessors with the same class id and te
xture accesses | 252 * In an ideal world, two GrGeometryProcessors with the same class id and te
xture accesses |
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400 | 405 |
401 private: | 406 private: |
402 bool hasExplicitLocalCoords() const SK_OVERRIDE { return false; } | 407 bool hasExplicitLocalCoords() const SK_OVERRIDE { return false; } |
403 | 408 |
404 GrColor fColor; | 409 GrColor fColor; |
405 | 410 |
406 typedef GrPrimitiveProcessor INHERITED; | 411 typedef GrPrimitiveProcessor INHERITED; |
407 }; | 412 }; |
408 | 413 |
409 #endif | 414 #endif |
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