LuxCoreRender Forums

ah, there's a difference between Viewport and Final Render, I do see caustics with light tracing off in final render. I've been doing stuff that didn't need caustics seen through something transparent so have just been using Tracing. So in final render - refractive/reflective caustics will be visib...

Sharlybg wrote: ↑Mon Apr 11, 2022 6:43 pm Can you please show your blender addon pref.
And does it happen with CPU only render too ?

With CPU the caustics are visible, but hardly

I'm late to the party didn't see 2.3 and didn't play much with 2.4, I think it needs the Light Tracing on now. Which would speed things up if caustics are not needed. You usually don`t need Light Tracing for caustics under water- here the underwater Paintings Scene from the example files. I removed...

Sharlybg wrote: ↑Mon Apr 11, 2022 4:41 pm With a proper lighting it work here: https://polyhaven.com/a/veld_fire
Also optimise settings a bit : You can also turn of dispersion for even faster render.

File
CausticsTest.7z

Render:

untitled.jpg

Thanks- that`s what I got with your unchanged file after hitting the render button:

bdjones wrote: ↑Sun Apr 10, 2022 9:31 pm I have to drop the opacity of the glass below 1 for the caustics to show back through the plane.

With Light Tracing it seems indeed the case to do so...
But without Light Tracing (but GI cache on) I still don`t get any caustics as I got used to a while ago...

In your file the world background is set to HDRI with no image attached, the white background is blowing out the caustics from the sun. Once I switch to Sky background the caustics appear: screenshot.jpg The lighting system was changed in a previous version, possibly that's why sun + white backgrou...

Hi all, Since some while I noticed a strange thing while trying to render caustics in a pool with Luxcorerender 2.5 or 2.6. The strange thing is: With older scenes created with older Luxcorerender 2.3 or 2.4 I can get caustics in Luxcorerender 2.5 or 2.6 when using caustics light cache. Newer scenes...