Roman Grigoriev writes: > Hi guys! > I implement smokes and missile trails on flightgear and come across to > following problem: > ALPHA sorting > could you please describe me why we have this problem? > so here is two screenshots one from plib viewer > http://fgfs.narod.ru/snap2.jpg > and one from flightgear. > http://fgfs.narod.ru/snap1.jpg > Maybe I should adjust state? > What should I do? > Thanx in advance
I'm not sure if this is helpful or not, but as you probably know, to correctly render a scene in opengl, you need to first draw all the opaque objects, then draw all the objects with transparency (depth sorted from furthest to closest.) Plib does a very crude alpha sort and separates out the opaque and transparent objects, then draws the transparent objects last. However, it does *not* depth sort them. An a patch was submitted to the plib devel team, but it got flat out rejected. :-( But, most likely you problem is happening because the translucent objects aren't being depth sorted and rendered back to front. Regards, Curt. -- Curtis Olson HumanFIRST Program FlightGear Project Twin Cities curt 'at' me.umn.edu curt 'at' flightgear.org Minnesota http://www.menet.umn.edu/~curt http://www.flightgear.org _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
