Add support for using glCopyTexSubImage2D when possible to copy surfaces.
Review URL: https://codereview.chromium.org/13915011
git-svn-id: http://skia.googlecode.com/svn/trunk@8675 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrDrawTarget.h b/src/gpu/GrDrawTarget.h
index 13abee9..8f5f09f 100644
--- a/src/gpu/GrDrawTarget.h
+++ b/src/gpu/GrDrawTarget.h
@@ -432,6 +432,14 @@
const SkIPoint& dstPoint);
/**
+ * This is can be called before allocating a texture to be a dst for copySurface. It will
+ * populate the origin, config, and flags fields of the desc such that copySurface is more
+ * likely to succeed and be efficient.
+ */
+ virtual void initCopySurfaceDstDesc(const GrSurface* src, GrTextureDesc* desc);
+
+
+ /**
* Release any resources that are cached but not currently in use. This
* is intended to give an application some recourse when resources are low.
*/