added support for PLS path rendering

src/gpu/GrGpu.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 GrGpu_DEFINED
 #define GrGpu_DEFINED
 
@@ skipping 17 matching lines @@
 class GrPipeline;
 class GrPrimitiveProcessor;
 class GrRenderTarget;
 class GrStencilAttachment;
 class GrSurface;
 class GrTexture;
 class GrTransferBuffer;
 class GrVertexBuffer;
 class GrVertices;
 
+//#define ENABLE_PLS

[bsalomon, 2016/01/13 19:15:34]

Since this macro spans multiple files maybe prefix with GR_ and define in
GrConfig.h

#if !defined(GR_ENABLE_PLS)
    #define GR_ENABLE_PLS 0
#endif

In Gr-land we tend to define boolean macros to 0 or 1 rather than have them
defined or not defined.

+
 class GrGpu : public SkRefCnt {
 public:
     /**
      * Create an instance of GrGpu that matches the specified backend. If the requested backend is
      * not supported (at compile-time or run-time) this returns nullptr. The context will not be
      * fully constructed and should not be used by GrGpu until after this function returns.
      */
     static GrGpu* Create(GrBackend, GrBackendContext, const GrContextOptions&, GrContext* context);
 
     ////////////////////////////////////////////////////////////////////////////
@@ skipping 290 matching lines @@
             , fDesc(desc) {
             SkASSERT(primProc && pipeline && desc);
         }
         const GrPrimitiveProcessor* fPrimitiveProcessor;
         const GrPipeline* fPipeline;
         const GrProgramDesc* fDesc;
     };
 
     void draw(const DrawArgs&, const GrVertices&);
 
+    // Called by drawtarget when flushing. Provides a hook for working around an ARM PLS driver bug.
+    virtual void performFlushWorkaround();
+
     ///////////////////////////////////////////////////////////////////////////
     // Debugging and Stats
 
     class Stats {
     public:
 #if GR_GPU_STATS
         Stats() { this->reset(); }
 
         void reset() {
             fRenderTargetBinds = 0;
@@ skipping 193 matching lines @@
     ResetTimestamp                                                      fResetTimestamp;
     uint32_t                                                            fResetBits;
     // The context owns us, not vice-versa, so this ptr is not ref'ed by Gpu.
     GrContext*                                                          fContext;
 
     friend class GrPathRendering;
     typedef SkRefCnt INHERITED;
 };
 
 #endif