Fix stroking of zero length paths with end caps on NVPR

src/gpu/gl/GrGLPath.h

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLPath_DEFINED
 #define GrGLPath_DEFINED
 
 #include "../GrPath.h"
 #include "gl/GrGLTypes.h"
 
 class GrGLGpu;
 
 /**
  * Currently this represents a path built using GL_NV_path_rendering. If we
  * support other GL path extensions then this would have to have a type enum
  * and/or be subclassed.
  */
 
 class GrGLPath : public GrPath {
 public:
-    static void InitPathObject(GrGLGpu*,
-                               GrGLuint pathID,
-                               const SkPath&,
-                               const GrStrokeInfo&);
+    static bool InitPathObjectPathDataCheckingDegenerates(GrGLGpu*,
+                                                          GrGLuint pathID,
+                                                          const SkPath&);
+    static void InitPathObjectPathData(GrGLGpu*,
+                                       GrGLuint pathID,
+                                       const SkPath&);
+    static void InitPathObjectStroke(GrGLGpu* gpu, GrGLuint pathID, const GrStrokeInfo& stroke);
+
+    static void InitPathObjectEmptyPath(GrGLGpu*, GrGLuint pathID);
+
 
     GrGLPath(GrGLGpu* gpu, const SkPath& path, const GrStrokeInfo& stroke);
     GrGLuint pathID() const { return fPathID; }
 
     bool shouldStroke() const { return fShouldStroke; }
     bool shouldFill() const { return fShouldFill; }
 protected:
     void onRelease() override;
     void onAbandon() override;
 
 private:
     // TODO: Figure out how to get an approximate size of the path in Gpu memory.
     size_t onGpuMemorySize() const override { return 100; }
 
     GrGLuint fPathID;
     bool fShouldStroke;
     bool fShouldFill;
 
     typedef GrPath INHERITED;
 };
 
 #endif