sksl: Add a "sk_Clockwise" built-in

This allows us to identify clockwise-winding triangles, in terms of
Skia device space, in all backends and with all render target origins.

Bug: skia:
Change-Id: I220e1c459e0129d1cc4dee6458ef94277fbedd21
Reviewed-on: https://skia-review.googlesource.com/142662
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>

1 files changed, 2 insertions, 3 deletions

diff --git a/src/gpu/gl/GrGLGpu.h b/src/gpu/gl/GrGLGpu.h
index 78ae024306..3e6dbaad29 100644
--- a/src/gpu/gl/GrGLGpu.h
+++ b/src/gpu/gl/GrGLGpu.h
@@ -341,9 +341,7 @@ private:
 
     // The passed bounds contains the render target's color values that will subsequently be
     // written.
-    void flushRenderTarget(GrGLRenderTarget*, GrSurfaceOrigin, const SkIRect& bounds);
-    // This version has an implicit bounds of the entire render target.
-    void flushRenderTarget(GrGLRenderTarget*);
+    void flushRenderTarget(GrGLRenderTarget*, GrSurfaceOrigin, const SkIRect* bounds = nullptr);
     // This version can be used when the render target's colors will not be written.
     void flushRenderTargetNoColorWrites(GrGLRenderTarget*);
 
@@ -560,6 +558,7 @@ private:
     GrStencilSettings                       fHWStencilSettings;
     TriState                                fHWStencilTestEnabled;
 
+    GrGLenum                                fHWFrontFace;
 
     TriState                                fHWWriteToColor;
     GrGpuResource::UniqueID                 fHWBoundRenderTargetUniqueID;