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      1 
      2 /*
      3  * Copyright 2013 Google Inc.
      4  *
      5  * Use of this source code is governed by a BSD-style license that can be
      6  * found in the LICENSE file.
      7  */
      8 
      9 #include "GrTypes.h"
     10 #include "GrColor.h"
     11 #include "GrXferProcessor.h"
     12 
     13 #ifndef GrBlend_DEFINED
     14 #define GrBlend_DEFINED
     15 
     16 static inline bool GrBlendCoeffRefsSrc(GrBlendCoeff coeff) {
     17     switch (coeff) {
     18         case kSC_GrBlendCoeff:
     19         case kISC_GrBlendCoeff:
     20         case kSA_GrBlendCoeff:
     21         case kISA_GrBlendCoeff:
     22             return true;
     23         default:
     24             return false;
     25     }
     26 }
     27 
     28 static inline bool GrBlendCoeffRefsDst(GrBlendCoeff coeff) {
     29     switch (coeff) {
     30         case kDC_GrBlendCoeff:
     31         case kIDC_GrBlendCoeff:
     32         case kDA_GrBlendCoeff:
     33         case kIDA_GrBlendCoeff:
     34             return true;
     35         default:
     36             return false;
     37     }
     38 }
     39 
     40 GrColor GrSimplifyBlend(GrBlendCoeff* srcCoeff,
     41                         GrBlendCoeff* dstCoeff,
     42                         GrColor srcColor, uint32_t srcCompFlags,
     43                         GrColor dstColor, uint32_t dstCompFlags,
     44                         GrColor constantColor);
     45 
     46 #endif
     47