Hi,
We have a comics here where the main character is named "Lucky Luke". He is a
cowboy who run after the evil Dalton brothers and is famous to fire faster than
his shadow.
Do we want objects ahead of their shadows and play "Lucky Luke" in fg ?
Rendering half the scene in the shadow map is not possible. Once the shadow map
is cleared to render moving objects, you have to render everything again or it
will not cast shadows.
Regards,
-Fred
----- Mail original -----
> De: "TDO Brandano" <tdo_brand...@hotmail.com>
> À: "Flightgear Devel List" <flightgear-devel@lists.sourceforge.net>
> Envoyé: Mardi 3 Avril 2012 17:41:24
> Objet: Re: [Flightgear-devel] More Rembrandt Feedback
> Actually, what I wonder is, do we need the scenery cast shadows to be
> calculated on each frame? Is there a way that they can be "stored"
> and just updated every few minutes for static objects?
> > Date: Tue, 3 Apr 2012 13:53:08 +0100
> > From: aeitsch...@yahoo.de
> > To: flightgear-devel@lists.sourceforge.net
> > Subject: Re: [Flightgear-devel] More Rembrandt Feedback
> >
> > Hello,
> >
> > > Does anyone know whether FG is unique amongst desktop simulators
> > > in
> > > offering this? I have no experience of X-Plane nor FS-X.
> >
> > Yes, X-Plane 10 also makes use of deferred shading. They just named
> > it Global Lighting/HDR. Framerates aren't better there as in FGFS
> > as now.
> > The difference is only that landinglights there looks much smoother
> > (no hard edges), the same for the shadows.
> > But we have a really good start as a non-commercial product. Very
> > promising, especially as an OpenSource-project. Thanks Fred for
> > your great work!
> >
> > Can't tell about FS-X, but I guess it is a similar technic.
> >
> > > I've noticed significant slowdown on my computer in the following
> > > circumstances:
> > > - Forests (e.g. KHAF). Having not looked at the code, my guess is
> > > that
> > > some NodeVisitor for the rending is delving too deeply into the
> > > OSG
> > > tree for the random vegetation.
> > > - Urban areas. My guess here is that is purely due to the number
> > > of
> > > models being rendered, each of which is casting a shadow. I know
> > > that
> > > there are still optimisations to be made, but could I suggest a
> > > property switch to limit shadowing to the user's aircraft? IMO
> > > the
> > > self-shadowing in the aircraft cockpit is the most impressive
> > > part of
> > > Rembrandt, and the combination of that plus shadowing on the
> > > ground
> > > might be an acceptable frame-rate compromise for many users.
> >
> > Agree to Stuart.
> > - Forest seems to need much more perfomance than before.
> >
> > Other things I noticed:
> > - Scenery-terrain seems to cast shadows. Visible especially shortly
> > before dawn or shortly after dusk. Great feature if so, but seems
> > also need a lot of perfomance. Maybe it can be made switchable?
> >
> > - Comparing different aircraft-models showed me, that not the
> > general number of vertices or even faces is the limiting factor,
> > but the number of objects. Especially instruments which makes use
> > of many objects, so using non-shadow animation would be very
> > recommended for instruments.
> >
> > -I do like when scenery objects cast shadows. But Do we need that
> > in a far distance?
> > Maybe we can have a distance limitation additional to Stuarts
> > proposal?
> >
> > To my surprise it isn't very difficult to make aircraft
> > rembrandt-compatible. The combined-shader is already converted and
> > especially the IAR80 looks really cool with shadows.
> >
> > Cheers
> > Heiko
> > still in work: http://www.hoerbird.net/galerie.html
> > But already done: http://www.hoerbird.net/reisen.html
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