Add optional sw generated path coverage mask caching

include/gpu/GrContextOptions.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 GrContextOptions_DEFINED
 #define GrContextOptions_DEFINED
 
@@ skipping 51 matching lines @@
         level and LOD control (ie desktop or ES3). */
     bool fDoManualMipmapping = false;
 
     /** Enable instanced rendering as long as all required functionality is supported by the HW.
         Instanced rendering is still experimental at this point and disabled by default. */
     bool fEnableInstancedRendering = false;
 
     /** Disables distance field rendering for paths. Distance field computation can be expensive
         and yields no benefit if a path is not rendered multiple times with different transforms */
     bool fDisableDistanceFieldPaths = false;
+
+    /**
+     * If true this allows path mask textures to be cached. This is only really useful if paths
+     * are commonly rendered at the same scale and fractional translation.
+     */
+    bool fAllowPathMaskCaching = false;
+
+    /**
+     * Force all path draws to go through through the sw-rasterize-to-texture code path (assuming
+     * the path is not recognized as a simpler shape (e.g. a rrect). This is intended for testing
+     * purposes.
+     */
+    bool fForceSWPathMasks = false;
 };
 
 #endif