Adding repeat mode to texture domain

src/gpu/effects/GrTextureDomain.h

Index: src/gpu/effects/GrTextureDomain.h
diff --git a/src/gpu/effects/GrTextureDomain.h b/src/gpu/effects/GrTextureDomain.h
index 80a617ef722eff937f9eb1ef381b97b83768605b..ef6ffbe51692b250a8e18ff57d017e93522b9900 100644
--- a/src/gpu/effects/GrTextureDomain.h
+++ b/src/gpu/effects/GrTextureDomain.h
@@ -26,8 +26,9 @@ public:
         kIgnore_Mode,  // Ignore the texture domain rectangle.
         kClamp_Mode,   // Clamp texture coords to the domain rectangle.
         kDecal_Mode,   // Treat the area outside the domain rectangle as fully transparent.
+        kRepeat_Mode,  // Wrap texture coordinates.  NOTE: filtering may not work as expected

[Stephen White, 2014/07/29 14:51:16]

This comment is a little cryptic. You mean due to lack of NPOT support? If so,
maybe we should call that out explicitly.

[bsalomon, 2014/07/29 14:55:27]

It's not related to NPOT. Using MIP or Bilerp filtering will read texels that
surround the domain. The only way I know of around that would be to use nearest
filtering and perform the filtering in the shader using multiple texture reads.

 
-        kLastMode = kDecal_Mode
+        kLastMode = kRepeat_Mode
     };
     static const int kModeCount = kLastMode + 1;