Jim Wilson writes: > David Megginson <[EMAIL PROTECTED]> said: > > > Curtis L. Olson writes: > > > > > Step 1: the sky dome, the sun, moon, stars, planets. This forms the > > > back drop. Everything else is drawn in front of these sky items. > > > > > > Step 2: draw the terrain. This needs to go in front of sky back drop > > > so it is drawn next. > > > > > > Step 3: draw the clouds. The clouds have alpha so they are drawn > > > last. > > > > I assume that steps 2 and 3 are in this order so that you'll be able > > to see a mountain (for example) through gaps in the clouds. If you > > reversed the two, we'd lose that but alpha on trees (etc.) would start > > working. Ouch. > > Or draw the trees as step four?
If we do that, then you won't see any of the trees through the breaks in the clouds if you are above a cloud layer. Curt. -- Curtis Olson IVLab / HumanFIRST Program FlightGear Project Twin Cities [EMAIL PROTECTED] [EMAIL PROTECTED] 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
