Hello everybody,

in a small game engine project I've implemented stencil shadow volumes with z-fail.

So far everything looks good. Shadows wrap around and look good in general.

I noticed a strange artifact which is only visible on shadowed areas, which looks like a small
version of the scene. It moves along with the camera.

Did anyone see such artifacts before and can give me a hint, what could be wrong? (see images)

Notice : If I reduce the far clipping plane the artifact gets bigger.

Thanks in advance
Matthias

Thanks for answering quickly.

I figured it out, it was a missing glEnable(GL_CULL_FACE)

Greetings
Matthias