Add GrContextOption to disable distance field path renderer

We're going to hide the path renderer bitfield behind a testing-only flag,
but clients may want to suppress this path renderer in particular, so a
dedicated flag makes sense.

Bug: skia:
Change-Id: I6cc4049243b5d3c129a824dfe7c1a65a70a05ccd
Reviewed-on: https://skia-review.googlesource.com/40083
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/gpu/GrContextOptions.h b/include/gpu/GrContextOptions.h
index b94b5cee5f..471195a589 100644
--- a/include/gpu/GrContextOptions.h
+++ b/include/gpu/GrContextOptions.h
@@ -56,6 +56,12 @@ struct GrContextOptions {
     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.
      */