Ian Romanick wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Roland Scheidegger wrote: > >>Roland Scheidegger wrote: >> >>>>I thought there was a mechanism that allowed the driver to be >>>>notified at glBegin (or similar) time. It seems like you ought to be >>>>able to emit some extra state at that time to change to / from >>>>point-sprite mode. >>> >>>Ah, sounds like a plan. I thought the NotifyBegin would only be useful >>>for vtxfmt-replace like things. I'll look into that. >> >>That was too fast. The NotifyBegin will only be called if there is >>actually new state, otherwise the tnl module will simply keep adding new >>primitives. > > > I think the core should be modified to call NotifyBegin if there is new > state *or* the primitive type changes. Perhaps there should be a flag > to request it being called in that case. > > Brian, do you have an opinion on this?
The tnl module is pretty much Keith's domain. One thing to keep in mind is glPolygonMode. Depending on whether a triangle is front or back-facing, it may either be rendered as a filled triangle, lines, or the vertices rendered as GL_POINTS (which may be sprites!). I think cases like that might be a fallback. Anyway, even if glBegin(GL_TRIANGLES) is called, you may wind up rendering lines, points or sprites instead of triangles. Off-hand I don't know how this is currently handled in the DRI drivers. Keith would know. -Brian ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
