Wrap NV_path_rendering API with GrGLPathRendering

src/gpu/gl/GrGpuGL.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGpuGL_DEFINED
 #define GrGpuGL_DEFINED
 
@@ skipping 161 matching lines @@
                                   bool insideClip) SK_OVERRIDE;
     virtual bool flushGraphicsState(DrawType, const GrDeviceCoordTexture* dstCopy) SK_OVERRIDE;
 
     // GrDrawTarget ovverides
     virtual void didAddGpuTraceMarker() SK_OVERRIDE;
     virtual void didRemoveGpuTraceMarker() SK_OVERRIDE;
 
     // binds texture unit in GL
     void setTextureUnit(int unitIdx);
 
+    // Stencil and cover GL paths, using the v1.3 API if available
+    void stencilThenCoverFillPath(GrGLuint path, GrGLenum fillMode,
+                                  GrGLuint mask, GrGLenum coverMode);
+    void stencilThenCoverStrokePath(GrGLuint path, GrGLint reference,
+                                    GrGLuint mask, GrGLenum coverMode);
+    void stencilThenCoverFillPathInstanced(GrGLsizei numPaths, GrGLenum pathNameType,
+                                           const GrGLvoid *paths, GrGLuint pathBase,
+                                           GrGLenum fillMode, GrGLuint mask,
+                                           GrGLenum coverMode, GrGLenum transformType,
+                                           const GrGLfloat *transformValues);
+    void stencilThenCoverStrokePathInstanced(GrGLsizei numPaths, GrGLenum pathNameType,
+                                             const GrGLvoid *paths, GrGLuint pathBase,
+                                             GrGLint reference, GrGLuint mask,
+                                             GrGLenum coverMode, GrGLenum transformType,
+                                             const GrGLfloat *transformValues);
+
     // Sets up vertex attribute pointers and strides. On return indexOffsetInBytes gives the offset
     // an into the index buffer. It does not account for drawInfo.startIndex() but rather the start
     // index is relative to the returned offset.
     void setupGeometry(const DrawInfo& info, size_t* indexOffsetInBytes);
 
     // Subclasses should call this to flush the blend state.
     // The params should be the final coefficients to apply
     // (after any blending optimizations or dual source blending considerations
     // have been accounted for).
     void flushBlend(bool isLines, GrBlendCoeff srcCoeff, GrBlendCoeff dstCoeff);
@@ skipping 277 matching lines @@
     // we record what stencil format worked last time to hopefully exit early
     // from our loop that tries stencil formats and calls check fb status.
     int fLastSuccessfulStencilFmtIdx;
 
     SkAutoTDelete<GrGLNameAllocator> fPathNameAllocator;
 
     typedef GrGpu INHERITED;
 };
 
 #endif