hello, i've a problem with shadow volumes. My algoritm seems to be fine, the shadows displayed are ok, but i can see some artefacts in the shadows depending on the position of the camera. Theses artefacts (hole in the shadow) represents some edges of my shadow volume. I have tested it on a simple box and i can see some edges in the shadow. I'm just building my shadow volume and drawing it with DrawPrimitiveUP. What i'm doing wrong ? john

i've found what i'm doing wrong !

i add too much faces in my shadow volume. and it's the intersection of theses faces which makes artifacts in my shadow !!

sorry.....