Add the proper data offset in Image11::copy, for the slow pixel copy method.

TRAC #22586

Signed-off-by: Nicolas Capens
Signed-off-by: Shannon Woods
Author: Jamie Madill

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1921 736b8ea6-26fd-11df-bfd4-992fa37f6226
1 file changed