On 5 September 2013 10:42, Stefan Dösinger <stefan at codeweavers.com> wrote: > Yes, we don't actually support those, but that's wined3d's problem, not > ddraw's. We do. The difference between DXT2/DXT3 and DXT4/DXT5 is just a convention wrt. storing pre-multiplied alpha or not, there's no difference in the actual encoding.