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Side by Side Diff: include/gpu/GrXferProcessor.h

Issue 919683002: Remove canApplyCoverage from XP and all related functions in gpu code. (Closed) Base URL: https://skia.googlesource.com/skia.git@pdDstCopy
Patch Set: Created 5 years, 10 months ago
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1 /* 1 /*
2 * Copyright 2014 Google Inc. 2 * Copyright 2014 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 GrXferProcessor_DEFINED 8 #ifndef GrXferProcessor_DEFINED
9 #define GrXferProcessor_DEFINED 9 #define GrXferProcessor_DEFINED
10 10
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193 const GrDeviceCoordTexture* dstCopy, 193 const GrDeviceCoordTexture* dstCopy,
194 const GrDrawTargetCaps& caps) const; 194 const GrDrawTargetCaps& caps) const;
195 195
196 /** 196 /**
197 * This function returns true if the GrXferProcessor generated from this fac tory will be able to 197 * This function returns true if the GrXferProcessor generated from this fac tory will be able to
198 * correctly blend when using RGB coverage. The knownColor and knownColorFla gs represent the 198 * correctly blend when using RGB coverage. The knownColor and knownColorFla gs represent the
199 * final computed color from the color stages. 199 * final computed color from the color stages.
200 */ 200 */
201 virtual bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlag s) const = 0; 201 virtual bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlag s) const = 0;
202 202
203 /**
204 * Depending on color blend mode requested it may or may not be possible to correctly blend with
205 * fractional pixel coverage generated by the fragment shader.
206 *
207 * This function considers the known color and coverage input into the xfer processor and
208 * certain state information (colorWriteDisabled) to determine whether
209 * coverage can be handled correctly.
210 */
211 virtual bool canApplyCoverage(const GrProcOptInfo& colorPOI,
212 const GrProcOptInfo& coveragePOI) const = 0;
213
214
215 struct InvariantOutput { 203 struct InvariantOutput {
216 bool fWillBlendWithDst; 204 bool fWillBlendWithDst;
217 GrColor fBlendedColor; 205 GrColor fBlendedColor;
218 uint32_t fBlendedColorFlags; 206 uint32_t fBlendedColorFlags;
219 }; 207 };
220 208
221 /** 209 /**
222 * This function returns known information about the output of the xfer proc essor produced by 210 * This function returns known information about the output of the xfer proc essor produced by
223 * this xp factory. The invariant color information returned by this functio n refers to the 211 * this xp factory. The invariant color information returned by this functio n refers to the
224 * final color produced after all blending. 212 * final color produced after all blending.
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290 enum { 278 enum {
291 kIllegalXPFClassID = 0, 279 kIllegalXPFClassID = 0,
292 }; 280 };
293 static int32_t gCurrXPFClassID; 281 static int32_t gCurrXPFClassID;
294 282
295 typedef GrProgramElement INHERITED; 283 typedef GrProgramElement INHERITED;
296 }; 284 };
297 285
298 #endif 286 #endif
299 287
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