GPU implementation of drawRegion()

include/gpu/GrDrawContext.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDrawContext_DEFINED
 #define GrDrawContext_DEFINED
 
@@ skipping 198 matching lines @@
      * @param   colors          optional array of per-sprite colors, supercedes
      *                          the paint's color field.
      */
     void drawAtlas(const GrClip&,
                    const GrPaint& paint,
                    const SkMatrix& viewMatrix,
                    int spriteCount,
                    const SkRSXform xform[],
                    const SkRect texRect[],
                    const SkColor colors[]);
-    
+
+    /**
+     * Draws a region.
+     *
+     * @param paint         describes how to color pixels
+     * @param viewMatrix    transformation matrix
+     * @param region        the region to be drawn
+     * @param style         style to apply to the region
+     */
+    void drawRegion(const GrClip&,
+                    const GrPaint& paint,
+                    const SkMatrix& viewMatrix,
+                    const SkRegion& region,
+                    const GrStyle& style);
+
     /**
      * Draws an oval.
      *
      * @param paint         describes how to color pixels.
      * @param viewMatrix    transformation matrix
      * @param oval          the bounding rect of the oval.
      * @param style         style to apply to the oval. Currently path effects are not allowed.
      */
     void drawOval(const GrClip&,
                   const GrPaint& paint,
@@ skipping 153 matching lines @@
 
     sk_sp<SkColorSpace>               fColorSpace;
     SkSurfaceProps                    fSurfaceProps;
     GrAuditTrail*                     fAuditTrail;
 
     // In debug builds we guard against improper thread handling
     SkDEBUGCODE(mutable GrSingleOwner* fSingleOwner;)
 };
 
 #endif