xf86-video-mga: Changes to 'exa'

[Tilman Sauerbeck]

 src/mga_exa.c |   26 ++++++++++++++++++--------
 1 files changed, 18 insertions(+), 8 deletions(-)

New commits:
commit 965faa3661f73a1d4cbf6368458244dff45a76ad
Author: Tilman Sauerbeck <tilman at code-monkey.de>
Date:   Wed Sep 13 14:56:29 2006 +0200

    Only use the source texture's alpha channel if it actually has one.

commit 14202e7c47326e8678bf38a6bda63d608f1f152b
Author: Tilman Sauerbeck <tilman at code-monkey.de>
Date:   Mon Sep 11 14:22:24 2006 +0200

    Support masks without alpha.