Implement support for mipmap generation (CopyTexImage2D regression)

TRAC #11338

CopyTex(Sub)Image2D was broken by the coordinate space change. Render targets are rendered flipped in the Y axis.

Signed-off-by: Nicolas Capens
Signed-off-by: Daniel Koch

Author:    Andrew Lewycky

git-svn-id: https://angleproject.googlecode.com/svn/trunk@169 736b8ea6-26fd-11df-bfd4-992fa37f6226
1 file changed