Add flag to gradients to interpolate colors in premul space. Experimental API to encapsulate the sh…

include/core/SkShader.h

 
 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef SkShader_DEFINED
@@ skipping 294 matching lines @@
     struct GradientInfo {
         int         fColorCount;    //!< In-out parameter, specifies passed size
                                     //   of fColors/fColorOffsets on input, and
                                     //   actual number of colors/offsets on
                                     //   output.
         SkColor*    fColors;        //!< The colors in the gradient.
         SkScalar*   fColorOffsets;  //!< The unit offset for color transitions.
         SkPoint     fPoint[2];      //!< Type specific, see above.
         SkScalar    fRadius[2];     //!< Type specific, see above.
         TileMode    fTileMode;      //!< The tile mode used.
+        uint32_t    fGradientFlags; //!< see SkGradientShader::Flags
     };
 
     virtual GradientType asAGradient(GradientInfo* info) const;
 
     /**
      *  If the shader subclass has a GrEffect implementation, this installs an effect on the stage.
      *  The GrContext may be used by the effect to create textures. The GPU device does not call
      *  setContext. Instead we pass the paint here in case the shader needs paint info.
      */
     virtual GrEffectRef* asNewEffect(GrContext* context, const SkPaint& paint) const;
@@ skipping 42 matching lines @@
     SkDEBUGCODE(SkBool8 fInSetContext;)
 
     static SkShader* CreateBitmapShader(const SkBitmap& src,
                                         TileMode, TileMode,
                                         void* storage, size_t storageSize);
     friend class SkAutoBitmapShaderInstall;
     typedef SkFlattenable INHERITED;
 };
 
 #endif