> > > > I'm thinking about how these could be used in Mesa drivers? would I be > > correct in thinking the fallbacks would mess up as the Mesa copy of the > > texture wouldn't be the same as what the card would be using? > > I'm not sure that the fallbacks in their current form ever actually read from > the on-card texture memory.
No the onboard memory or GART copy would be the same as the copy Mesa keeps, the only difference would be the bit in the register would mean the chip would auto-swizzle when it is reading the texture... so if I have an RGBA 8888 and set the bit the radeon will treat it like a ABGR 8888 but not actually change any copies of it.. so in terms of operations on the texture the fallback would work on a RGBA, the chip operations on ABGR or at least I think this is what happens.. Dave. -- David Airlie, Software Engineer http://www.skynet.ie/~airlied / airlied at skynet.ie pam_smb / Linux DECstation / Linux VAX / ILUG person ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
