Erik Hofman wrote: > Frederic Bouvier wrote: > > >>This shouldn't be happening. > >>Could you confirm that after a make clean; make install in the > >>SimGear/simgear/scene/sky directory and remaking fgfs the problem still > >>exists? > > > > > > I confirm. And the patch below solve the problem. > > > > --- main.cxx 31 Jul 2003 14:47:56 -0000 1.117 > > +++ main.cxx 14 Aug 2003 21:32:35 -0000 > > @@ -736,6 +736,9 @@ > > > > // return to the desired diffuse color > > ssgGetLight( 0 ) -> setColour( GL_DIFFUSE, l->scene_diffuse ); > > + > > + // return to normal fog density > > + glFogf ( GL_FOG_DENSITY, fog_exp2_density ); > > I'm not sure this is the right solution because it overrides the fog > settings which where just defined in the thesky->preDraw() function. > > It starts to look like a problem with the OpenGL driver as Curtis > mentioned this to me privately: > > > Ok, it seems from my opengl book that if you glPushAttrib(GL_FOG_BIT) > > first then set GL_FOG_DENSITY, then the glPopAttrib() should restore > > the density to the original value ... > > > > Maybe windows doesn't perfectly implement this??? > > Which video hardware are you using?
I am using a NVIDIA GF3 Ti200. >From my understanding of the current code, you modify the fog density for the sun punch through in a function call at line main.cxx:735 ( 'thesky->preDraw();' ) and then line main.cxx:751 we draw the scene. And there is no glFogf( GL_FOG_DENSITY, something ) in between, so the scene ( terrain ) is drawn with the last density set, that is the sun punch through. Am I missing something ? I ran the program under debugger with breakpoint on every glFogf( GL_FOG_DENSITY,...) I found and there is no call to glFogf between thesky->preDraw() and ssgCullAndDraw( globals->get_scenery()->get_scene_graph() ) -Fred _______________________________________________ Flightgear-devel mailing list [EMAIL PROTECTED] http://mail.flightgear.org/mailman/listinfo/flightgear-devel
