Stream compaction for deferred shading

@inproceedings{Hoberock2009StreamCF,
  title={Stream compaction for deferred shading},
  author={Jared Hoberock and Victor Lu and Yuntao Jia and John C. Hart},
  booktitle={High Performance Graphics},
  year={2009}
}
The GPU leverages SIMD efficiency when shading because it rasterizes a triangle at a time, running the same shader on all of its fragments. Ray tracing sacrifices this shader coherence, and the result is that SIMD units often must run different shaders simultaneously resulting in serialization. We study this problem and define a new measure called heterogeneous efficiency to measure SIMD divergence among multiple shaders of different complexities in a ray tracing application. We devise seven… CONTINUE READING
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