Self-shadowing bump map using 3D texture hardware

Authors:
Tom Forsyth
Affiliations:
Mucky Foot Productions, Ltd., Milton House, 66-68 Chertsey Street, Cuildford, Surrey, UK GU1 4HL
Venue:
Journal of Graphics Tools - Special on hardware-accelerated rendering techniques
Year:
2002

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Abstract

Self-shadowing bump maps add realism and depth to scenes and provide important visual cues. Previous techniques have shown self-shadowing at interactive rates, but at a substantial cost over standard normal mapped bump mapping. This paper uses volume textures on consumer graphics hardware, using few enough resources that they can be easily added to existing normal map bump mapping renderers. The ways the technique can be scaled according to available memory constraints are also explored.