A hierarchical shadow volume algorithm

@inproceedings{Aila2004AHS,
  title={A hierarchical shadow volume algorithm},
  author={Timo Aila and Tomas Akenine-M{\"o}ller},
  booktitle={Graphics Hardware},
  year={2004}
}
The shadow volume algorithm is a popular technique for real-time shadow generation using graphics hardware. Its major disadvantage is that it is inherently fillrate-limited, as the performance is inversely proportional to the area of the projected shadow volumes. We present a new algorithm that reduces the shadow volume rasterization work significantly. With our algorithm, the amount of per-pixel processing becomes proportional to the screen-space length of the visible shadow boundary instead… CONTINUE READING
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