[osg-users] Artifacts using shadow maps

Mihai Radu radu at cm-labs.com
Mon Sep 24 10:37:48 PDT 2007

Sorry for the really slow reply ...

What you are seeing is 'surface acne' from self-shadowing, hard to fix
with simple shadow maps. Things to try, polygon offset values, bias
values, and soft-shadows ( also playing with the culling of front/back
faces for the shadow pass might fix some issues)

Mihai Radu

Marcus Fritzen wrote:
> Hello everybody,
> with my new graphic card, a nvidia 8800 GTS and the newest drivers
> from the website, i get strange artifacts on my shadowed object (just
> on the object, not on the ground). anybody an idea why? i am using the
> normal cullface front and polygon offset. Attached is an image of the
> artifakt.
> Thanks,
> Marcus.
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