LuxCoreRender Forums

I would like to mix cycles render and lux caustics, what is the right way to get caustics from Lux? Here is the (yafaray) version https://www.youtube.com/watch?v=vZ7EtyhGeWo

How can i also get a good sharp caustics in reflections? I have problems to do so.

stanland wrote: ↑Fri Nov 15, 2019 12:12 pm How can i also get a good sharp caustics in reflections? I have problems to do so.Lux-Custics.jpg

They are called SDS paths (i.e. Specular-Diffuse-Specular paths) and are very hard to impossible to render even for normal BiDir. They require this feature: viewtopic.php?f=5&t=1449

Short version: you need to use a v2.3 automatic build and to enable caustic cache too.

stanland wrote: ↑Fri Nov 15, 2019 12:06 pm I would like to mix cycles render and lux caustics, what is the right way to get caustics from Lux? Here is the (yafaray) version https://www.youtube.com/watch?v=vZ7EtyhGeWo

There is a trick you can use:

- use PATHCPU;

- enabled light tracing and set the partition between light and eye tracing to do only light tracing.

The rendering will include now only the caustics and should be easy to mix with Cycles output.

Note: it will miss the SDS path contribution I was talking in my previous post. There isn't currently a way to do an SDS path only rendering.

Short version: you need to use a v2.3 automatic build and to enable caustic cache too.

When official v2.3 will be out?

Thanks for the tips!

stanland wrote: ↑Fri Nov 15, 2019 12:46 pm

Short version: you need to use a v2.3 automatic build and to enable caustic cache too.

When official v2.3 will be out?

I hope before the end of the year but don't hold your breath

However automatic build is quite stable so you could give it a spin.