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