Frederic Bouvier > Vivian Meazza a écrit : > > >I've just seen the new volumetric shadows. Brilliant!!! On a Nvidia > gForce > >5200, the frame rate hit is about 10 in external view (I can live with > it) > >and no noticeable effect in internal - perhaps 1 or 2. > > > > > Yes, it is very nice. I have a drop of 10 fps ( 50 -> 40 ) when I enable > all ( ac + ai + to ) > > >There's a bit of a funny with the interaction between the Hurricane > >propeller disk and the ac shadow: it makes the shadow disappear, and > there's > >something throwing a shadow on to the disk, which I've not seen in real > >life, although I might not have noticed it. Is there anything I can do > >within the ac model to tidy this up? > > > > > > 2 stranges things that I know are inherent to the shadow volume technique > : > 1. even when surfaces are smoothed, the shadows are hard and apply to a > whole quad when a fuselage shadows itself ( try the A320, look at the > airframe and press t to see what I mean ). > 2. transparent surfaces ( the suspension chains of the bridges, or the > metallic structures ) produce filled shadows.
Yes, I can see that. The markings on the Hunter are on separate transparent object: these throw a shadow. It seems as if I'm going to abandon that method if shadows are to be usable with that model. Pity; it saves a huge amount of artwork and texture. The edges of the shadows are a bit too hard; a little penumbra would be good > Let wait the hardware to catch up a hit, and we could have clouds and > mountains casting shadows ;-) Nice if aircraft could throw shadow on cloud. Altogether it's a nice enhancement. V. _______________________________________________ Flightgear-devel mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
