In this test we will compare Geo Light sampling technology in 3Delight OSL, Arnold and PrMan. We will use a test with a geometric area light that is composed of a relatively large number of faces. The test should allow us to find out how the algorithm in general noise level and local adaptivity. We will use 3 different cameras to test these two aspects. Since we want to concentrate on the area light sampling technology, we will use only direct lighting and properly set the samples to isolate the algorithm.
Arnold
| Samples | 2 (1.23) | 4 (4.91) | 8 (19.64) | 16 (78.56) | 32 (314.29) | 64 (1257.18) |
|---|---|---|---|---|---|---|
| Time | 1s | 2s | 6s | 21s | 1:21 | 8:12 |
| Shadow Rays | 0.678 M | 3.26 M | 10.8 M | 43.4 M | 173.6 M | 694.5 M |
| RMSE | 0.15699 | 0.100115 | 0.0501787 | 0.0242515 | 0.0117413 | 0.00693426 |
3Delight
| Samples | 2 | 4 | 8 | 16 | 32 | 64 | 128 | 256 |
|---|---|---|---|---|---|---|---|---|
| Time | 5.72s | 8s | 12.82s | 22.18s | 40.92s | 1:49 | 3:33 | 7:00 |
| Shadow Rays | 2.45 M | 3.13 M | 4.51 M | 7.27 M | 12.78 M | 32.03 M | 62.16 M | 122.48 m |
| RMSE | 0.0933142 | 0.0658266 | 0.0441248 | 0.0290439 | 0.0185575 |
Constant Time
In this test we will use Arnold to render an image in 2 minutes and give the same amount of time to 3Delight and RenderMan.