[osg-users] Shadow frustum culling

Terry Welsh mogumbo at gmail.com
Mon Oct 29 14:05:32 PDT 2018

If I understand the original question correctly, you're not seeing
shadows that are cast by off-screen objects. I had that exact problem
back around 2006 and Robert solved it with the introduction of the
View class. Sorry, I don't remember the details beyond that and can't
find our old discussion archived anywhere.
- Terry

> Hi Gadalia,
> The OSG doesn't culling per Camera with each camera's own view frustum used
> for culling, this means the shadow camera should only cull things that are
> in it's frustum.  If it's culling objects that you think should be in the
> frustum then perhaps it's just set up with the wrong projection matrix
> settings.
> Robert
> On Mon, 29 Oct 2018 at 18:44, Gedalia Pasternak <gpasternak at mak.com> wrote:
> >
> > Hi List,
> > I've noticed that when using a camera for shadow casting it can often cull
> > out objects that are just outside of the frustum but cast shadows into the
> > scene. Is there any way to decouple the camera frustum culling calculation
> > from the rendering one, even just increasing the culling frustum size by
> > 10-15% might help.
> > Thanks
> > -Gedalia

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