Fix assert error triggered in D3D11 path when we redefine textures to GL_NONE.

Instead internally convert them between GL_NONE and DXGI_FORMAT_UNKNOWN.

TRAC #22463

Signed-off-by: Geoff Lang
Signed-off-by: Daniel Koch
Author: Jamie Madill

git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1769 736b8ea6-26fd-11df-bfd4-992fa37f6226
2 files changed