I am seeing strange shadow artifacts on my model when I use a ShadowMap. The artifacts get worse as I increase the size of my ground plane. You can see the artifacts get progressively worse in these images:
http://www.benaxelrod.com/temp/3x3.png http://www.benaxelrod.com/temp/5x5.png http://www.benaxelrod.com/temp/7x7.png http://www.benaxelrod.com/temp/10x10.png <- this is the desired size of ground plane http://www.benaxelrod.com/temp/12x12.png You can see strange gradients on the humanoid's hands and feet. And the shadow gets more and more pixilated. I am using OSG 2.6 on Debian Etch with a NVidia 7300 LE graphics card. This is how I configure the ShadowMap: shadowmap->setTextureSize(osg::Vec2s(1024, 1024)); shadowmap->setPolygonOffset(osg::Vec2(1.1f, 4.0f)); Do I need to tune these parameters? If so, how? Are there more parameters I need? And what do these parameters control exactly? Thanks, -Ben
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