JD Fenech wrote: > > I'm willing to attempt something. > > However, my openGL experience is very limited (read: I have an idea of the > general principle, but very little programming experience with it.) > > As for Hollywood space movies: that's the last thing I want. Besides, the best > ones of those were made before film was in color, and thus had no colored > stars =P > > Thanks for the interest, > JD > Actually, I don't think you need to know that much about OpenGL. Stars are drawn in lighting disabled mode, which means that the color you specify (in RGBA, values) is actually the color being drawn. i.e., OpenGL doesn't do any color calculations. Second, we don't use (m)any raw OpenGL calls anymore inside FlightGear, but make use of much of the ssg (simple scene graph) part of plib. You may wish to start reading some of plib's documentation, which you can find at: http://plib.sourceforge.net/ Note that the actual star rendering isn't done in FlightGear itself, but in SimGear, the accompanying general purpose simulation library. Take a look at Simgear/simgear/sky/stars.cxx. around line 228 you find something like: sgSetVec4( color, 1.0, 1.0, 1.0, alpha ); If you wish to make all the stars completely red, try something like sgSetVec4( color, 1.0, 0.5, 0.5, alpha ); and then do a make make install in SimGear and Finally a make in FlightGear. There's more to it, e.g., if you use very low RGB values the stars get clipped and don't show up. I haven't really figured out how this happens. But you can play with these values a bit, to get the idea. B.t.w., making even minor changes in SimGear forces a complete recompile of FlightGear. What I do mostly is to change directory to FlightGear/src/Main and do a "make" here. This only recompiles the top level directory and relinks the updated SimGear libs. B.t.w.2. This is getting pretty much a developers list topic. Maybe we should move the conversation over to the other list. Regards, Durk _______________________________________________ Flightgear-users mailing list [EMAIL PROTECTED] http://lists.sourceforge.net/lists/listinfo/flightgear-users
