Fix the y offset of Renderer11::copytexture to correct the inverted output image. Was breaking the WebGL conformance test copy-tex-image-and-sub-image. TRAC #22589 Signed-off-by: Geoff Lang Signed-off-by: Nicolas Capens Author: Jamie Madill git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1911 736b8ea6-26fd-11df-bfd4-992fa37f6226