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test2/intern
Thomas Dinges 5af00a3d12 Cycles: Optimization for Heterogeneous Volume Shadows.
* Don't compute expf() for every step, instead sum the intermediate values and calculate it every N (8 for now) steps. This helps a few percent (~5% on a cube with wave texture) in my tests here.
2014-08-14 20:09:25 +02:00
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