1 /*
2  * Copyright 2015 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #ifndef GrCustomXfermode_DEFINED
9 #define GrCustomXfermode_DEFINED
10 
11 #include "SkXfermode.h"
12 
13 class GrFragmentProcessor;
14 class GrTexture;
15 
16 /**
17  * Custom Xfer modes are used for blending when the blend mode cannot be represented using blend
18  * coefficients. It is assumed that all blending is done within the processors' emit code. For each
19  * blend mode there should be a matching fragment processor (used when blending with a background
20  * texture) and xfer processor.
21  */
22 namespace GrCustomXfermode {
23     bool IsSupportedMode(SkXfermode::Mode mode);
24 
25     GrFragmentProcessor* CreateFP(SkXfermode::Mode mode, GrTexture* background);
26 
27     GrXPFactory* CreateXPFactory(SkXfermode::Mode mode);
28 };
29 
30 #endif
31