LuxCoreRender Forums

Dade wrote: ↑Sat Apr 20, 2019 8:40 pm If BIDIRCPU+Sobol is faster than BIDIRCPU+Metropolis, you are probably rendering a scene that will converge even faster with PATHCPU+Sobol

Bidir is often needed when the light is hard to reach (like the lamp scene with the lampshade), but shadow areas still converge faster with sobol. IMHO

...the only real/effective adaptive sampler for BiDir is Metropolis because Adaptive Sobol can work only on eye paths while light paths are unaffected. ... Thank you for your advice! However in my (not too extensive) experience, it's harder to get noise-free result with metropolis than with sobol (...

If I'm right, BlendLuxCore still didn't catch up with the new adaptive sampling parameters, so I used LuxCore UI. I've found the parameters in the code: film.noiseestimation.warmup and film.noiseestimation.step . Blender's color management (Filmic) is really missing here, so these images don't look ...

Great news, thank you for your efforts!

alpistinho wrote: ↑Fri Apr 19, 2019 6:51 pm Would you be able to redo this test?

I'll test it tomorrow.

alpistinho wrote: ↑Fri Apr 19, 2019 6:51 pm Besides, keep in mind that the tonemap you chose is considered during the noise estimation...

I think this is a good direction and it'll give the best results in most cases.

Here's the file with Null (Transparent) material set to the lamp shade.

B.Y.O.B. wrote: ↑Tue Apr 16, 2019 5:28 pm Note: as an end user, I would wait a few days before trying to test this new stuff, it's not in a usable state yet. As alpistinho said, the Blender addon was not updated to use the new properties yet, for example.

3d is just a hobby for me, and I try to help you as much as I can.

alpistinho wrote: ↑Tue Apr 16, 2019 5:25 pm Yes the parameter has been changed and blendluxcore has not been changed yet.

I see, thanks!

If you can, give Random a try just to confirm my findings.

Unfortunately I have a constant lack of time. (Work + family)
Would it help you if I uploaded the scene with the lamp shade hidden?

FarbigeWelt wrote: ↑Tue Apr 16, 2019 9:38 am What if Sobol acts contrary, I mean adaptive 0.0 in blendluxcore
pushes Sobol to be perfectly adaptive and vice a versa?

This is unlikely because the samplecount pass shows the effect of adaptivity.

Something happened with Warmup and Test Step Samples in the daily build?
The SAMPLECOUNT pass starts to change only after about 70 samples now, even if I set 1 or 5 for both.

A test with Path engine (Sobol, 100 samples). For this one I've set Null (Transparent) material to the shade.

As I see, adaptive is noisier here too.