Shadow volumes

From DmWiki

• Sort by z before rendering as you do for transparencies.
• Shadow borders triangles toggle bit in stencil buffer.
• Darken Geometry drawn on pixels while stencil buffer on.

This will be an article detailing how to use the stencil buffer shadow volumes algorithm.

See also

• Robust Shadow Volumes (http://developer.nvidia.com/object/robust_shadow_volumes.html) interesting paper covering this shadow algorithm
• Fast Shadow Volumes (http://developer.nvidia.com/object/fast_shadow_volumes.html) nVidia paper covering several optimizations to the algorithm

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