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| Samples | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256 |
|---|---|---|---|---|---|---|---|---|
| Time | 5.72s | 8s | 12.82 s | 22.18 s | 40.92 s | 86.91 | 165.69 s | 302.98 |
| Shadow Rays | 2.45 M | 3.13 M | 4.51 M | 7.27 M | 12.78 M | 23.8 M | 45.88 M | 90.1 M |
| RMSE | 0.0933142 | 0.0658266 | 0.0441248 | 0.0290439 | 0.0185575 | 0.0117566 | 0.00752546 | 0.00449892 |
Preliminary Conclusions (
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for self, re-wording needed)
- 3Delight generates light samples that are asymptotically better than both Arnold and Prman.
- 3Delight is slower to to generate these samples. Meaning that for draft renders Arnold/PrMan will seem faster. For final renders 3Delight becomes increasingly faster.
- Using so much less samples also makes 3Delight faster when shading is more expensive
- RenderMan seems to have readl difficulties in sampling.
- Arnold has a solid albeit O(N^2) algorihm (vs O(N) in 3Delight) and compensates to a certain degree with very fast light sampler.
- When combining BRDFs, 3Delight is even less noisy.
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