http://bugs.winehq.org/show_bug.cgi?id=14939
--- Comment #6 from Roderick Colenbrander thunderbird2k@gmx.net 2008-09-20 08:32:45 --- Likely you could implement the algorithm that way but the drivers which offers PBOs are also the ones which offer S3TC. (Only Nvidia and ATI offer this at this point and I doubt PBOs will be supported on much older GPUs though if they support VBOs it is possible as PBOs are an extension to those)