michal wrote: > Brian Paul wrote on 2010-02-03 17:58: >> Keith Whitwell wrote: >> >>>>> Michal, >>>>> >>>>> why do you need this for linear interpolator and not perspective? I >>>>> think d3d mobile let you disable perspective correct texturing, but it >>>>> is always enabled for normal d3d. >>>>> >>>>> >>>> I could not think of a use case that uses perspective and cylindrical >>>> interpolation at the same time. If you think it's valid, we can >>>> implement cylindrical wrapping for perspective interpolator, but then I >>>> am not sure how exactly it should be done, i.e. should we divide and >>>> then wrap or the opposite? >>>> >>> Is there some way we can figure out what DX9 does here? Maybe a quick >>> test? >>> >> I suspect cylindrical wrapping would be done after the divide. >> >> > A quick test shows it is legal to have perspective and cylindrical > interpolation. In fact, I see no difference between projected and > non-projected version with REF device -- both are perspective correct. > > I think I am stuck at this point and need further help. I am trying to > modify tri_persp_coeff() in softpipe in a similar manner to > tri_linear_coeff(), but all I get are lousy rendering artifacts. If we > need do cylindrical wrapping after divide, it must be done as part of > shader interpolator, but the only place where we have enough information > to do wrapping is in primitive setup.
Do you have a patch relative to gallium-cylindrical-wrap? I'll take a look. -Brian ------------------------------------------------------------------------------ The Planet: dedicated and managed hosting, cloud storage, colocation Stay online with enterprise data centers and the best network in the business Choose flexible plans and management services without long-term contracts Personal 24x7 support from experience hosting pros just a phone call away. http://p.sf.net/sfu/theplanet-com _______________________________________________ Mesa3d-dev mailing list Mesa3d-dev@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
