Patrice Mandin wrote: > Le Mon, 01 Jun 2009 03:24:39 +0200 > Roland Scheidegger <[email protected]> a écrit: > >> Yes, seems so. In fact if you take a newer spec it'll list >> BlendEquationSeparate as promoted to core in 2.0. >> >>> Ah OK. Then I think I should write some test for renouveau, so I check >>> what Nvidia do when using these functions on nv30. >> AFAIK Nvidia did BlendFuncSeparate in software for nv20/25 so I'd guess >> it could be the same for BlendEquationSeparate for nv30. Though maybe >> the chip is flexible enough somehow to not require this. > > Well, from the simple renouveau test we currently have, a fragment > program is used on nv30 for this function, so currently no change is > required in Mesa. However nv30 gallium backend should be modified to > take this into account.
If there are other chipsets that cannot do true separate alpha blend, we can always use PIPE_CAP to let Mesa know, and Mesa can do the fragment program alteration itself. (r3xx and r4xx also have this, so it might be useful later on.) ~ C. ------------------------------------------------------------------------------ Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gathering of tech-side developers & brand creativity professionals. Meet the minds behind Google Creative Lab, Visual Complexity, Processing, & iPhoneDevCamp as they present alongside digital heavyweights like Barbarian Group, R/GA, & Big Spaceship. http://p.sf.net/sfu/creativitycat-com _______________________________________________ Mesa3d-dev mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mesa3d-dev
