OLD | NEW |
1 | 1 |
2 /* | 2 /* |
3 * Copyright 2006 The Android Open Source Project | 3 * Copyright 2006 The Android Open Source Project |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 | 9 |
10 #ifndef SkXfermode_DEFINED | 10 #ifndef SkXfermode_DEFINED |
(...skipping 175 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
186 * that will be given to the xfer mode. | 186 * that will be given to the xfer mode. |
187 */ | 187 */ |
188 virtual bool isOpaque(SrcColorOpacity opacityType) const; | 188 virtual bool isOpaque(SrcColorOpacity opacityType) const; |
189 | 189 |
190 /** | 190 /** |
191 * The same as calling xfermode->isOpaque(...), except that this also check
s if | 191 * The same as calling xfermode->isOpaque(...), except that this also check
s if |
192 * the xfermode is NULL, and if so, treats it as kSrcOver_Mode. | 192 * the xfermode is NULL, and if so, treats it as kSrcOver_Mode. |
193 */ | 193 */ |
194 static bool IsOpaque(const SkXfermode* xfer, SrcColorOpacity opacityType); | 194 static bool IsOpaque(const SkXfermode* xfer, SrcColorOpacity opacityType); |
195 | 195 |
196 /** Used to do in-shader blending between two colors computed in the shader
via a | 196 #if SK_SUPPORT_GPU |
197 GrFragmentProcessor. The input to the returned FP is the src color. The
dst color is | 197 /** Used by the SkXfermodeImageFilter to blend two colors via a GrFragmentPr
ocessor. |
198 provided by the dst param which becomes a child FP of the returned FP. I
f the params are | 198 The input to the returned FP is the src color. The dst color is |
199 null then this is just a query of whether the SkXfermode could support t
his functionality. | 199 provided by the dst param which becomes a child FP of the returned FP. |
200 It is legal for the function to succeed but return a null output. This i
ndicates that | 200 It is legal for the function to return a null output. This indicates tha
t |
201 the output of the blend is simply the src color. | 201 the output of the blend is simply the src color. |
202 */ | 202 */ |
203 virtual bool asFragmentProcessor(const GrFragmentProcessor** output, | 203 virtual const GrFragmentProcessor* getFragmentProcessorForImageFilter( |
204 const GrFragmentProcessor* dst) const; | 204 const GrFragmentProc
essor* dst) const; |
205 | 205 |
206 /** A subclass may implement this factory function to work with the GPU back
end. It is legal | 206 /** A subclass must implement this factory function to work with the GPU bac
kend. |
207 to call this with xpf NULL to simply test the return value. If xpf is non-
NULL then the | 207 The xfermode will return a factory for which the caller will get a ref.
It is up |
208 xfermode may optionally allocate a factory to return to the caller as *xpf
. The caller | 208 to the caller to install it. XferProcessors cannot use a background text
ure. |
209 will install it and own a ref to it. Since the xfermode may or may not ass
ign *xpf, the | |
210 caller should set *xpf to NULL beforehand. XferProcessors cannot use a bac
kground texture. | |
211 */ | 209 */ |
212 virtual bool asXPFactory(GrXPFactory** xpf) const; | 210 virtual GrXPFactory* asXPFactory() const; |
213 | 211 #endif |
214 /** Returns true if the xfermode can be expressed as an xfer processor facto
ry (xpFactory). | |
215 This helper calls the asXPFactory() virtual. If the xfermode is NULL, it i
s treated as | |
216 kSrcOver_Mode. It is legal to call this with xpf param NULL to simply test
the return value. | |
217 */ | |
218 static inline bool AsXPFactory(SkXfermode* xfermode, GrXPFactory** xpf) { | |
219 if (nullptr == xfermode) { | |
220 if (xpf) { | |
221 *xpf = nullptr; | |
222 } | |
223 return true; | |
224 } | |
225 return xfermode->asXPFactory(xpf); | |
226 } | |
227 | 212 |
228 SK_TO_STRING_PUREVIRT() | 213 SK_TO_STRING_PUREVIRT() |
229 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() | 214 SK_DECLARE_FLATTENABLE_REGISTRAR_GROUP() |
230 SK_DEFINE_FLATTENABLE_TYPE(SkXfermode) | 215 SK_DEFINE_FLATTENABLE_TYPE(SkXfermode) |
231 | 216 |
232 enum PM4fFlags { | 217 enum PM4fFlags { |
233 kSrcIsOpaque_PM4fFlag = 1 << 0, | 218 kSrcIsOpaque_PM4fFlag = 1 << 0, |
234 kDstIsSRGB_PM4fFlag = 1 << 1, | 219 kDstIsSRGB_PM4fFlag = 1 << 1, |
235 }; | 220 }; |
236 struct PM4fState { | 221 struct PM4fState { |
(...skipping 23 matching lines...) Expand all Loading... |
260 | 245 |
261 private: | 246 private: |
262 enum { | 247 enum { |
263 kModeCount = kLastMode + 1 | 248 kModeCount = kLastMode + 1 |
264 }; | 249 }; |
265 | 250 |
266 typedef SkFlattenable INHERITED; | 251 typedef SkFlattenable INHERITED; |
267 }; | 252 }; |
268 | 253 |
269 #endif | 254 #endif |
OLD | NEW |