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| 1 /* | |
| 2 * Copyright 2014 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 GrGLXferProcessor_DEFINED | |
| 9 #define GrGLXferProcessor_DEFINED | |
| 10 | |
| 11 #include "GrGLProcessor.h" | |
| 12 | |
| 13 class GrGLXPBuilder; | |
| 14 | |
| 15 class GrGLXferProcessor { | |
| 16 public: | |
| 17 GrGLXferProcessor() {} | |
| 18 virtual ~GrGLXferProcessor() {} | |
| 19 | |
| 20 typedef GrGLProcessor::TextureSamplerArray TextureSamplerArray; | |
| 21 struct EmitArgs { | |
| 22 EmitArgs(GrGLXPBuilder* pb, | |
| 23 const GrXferProcessor& xp, | |
| 24 const char* inputColor, | |
| 25 const char* inputCoverage, | |
| 26 const char* outputPrimary, | |
| 27 const char* outputSecondary, | |
| 28 const TextureSamplerArray& samplers) | |
| 29 : fPB(pb) | |
| 30 , fXP(xp) | |
| 31 , fInputColor(inputColor) | |
| 32 , fInputCoverage(inputCoverage) | |
| 33 , fOutputPrimary(outputPrimary) | |
| 34 , fOutputSecondary(outputSecondary) | |
| 35 , fSamplers(samplers) {} | |
| 36 | |
| 37 GrGLXPBuilder* fPB; | |
| 38 const GrXferProcessor& fXP; | |
| 39 const char* fInputColor; | |
| 40 const char* fInputCoverage; | |
| 41 const char* fOutputPrimary; | |
| 42 const char* fOutputSecondary; | |
| 43 const TextureSamplerArray& fSamplers; | |
| 44 }; | |
| 45 /** | |
| 46 * This is similar to emitCode() in the base class, except it takes a full s
hader builder. | |
| 47 * This allows the effect subclass to emit vertex code. | |
| 48 */ | |
| 49 virtual void emitCode(const EmitArgs&) = 0; | |
| 50 | |
| 51 /** A GrGLXferProcessor instance can be reused with any GrGLXferProcessor th
at produces | |
| 52 the same stage key; this function reads data from a GrGLXferProcessor an
d uploads any | |
| 53 uniform variables required by the shaders created in emitCode(). The Gr
XferProcessor | |
| 54 parameter is guaranteed to be of the same type that created this GrGLXfe
rProcessor and | |
| 55 to have an identical processor key as the one that created this GrGLXfer
Processor. */ | |
| 56 virtual void setData(const GrGLProgramDataManager&, | |
| 57 const GrXferProcessor&) = 0; | |
| 58 private: | |
| 59 typedef GrGLProcessor INHERITED; | |
| 60 }; | |
| 61 #endif | |
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Chromium Code Reviews
Issue 789343002:
Revert of Create xfer processor backend. (Closed)
Base URL: https://skia.googlesource.com/skia.git@xferBlendSolo