LuxCoreRender Forums

Thank you Dade for the fast reply,

but I guess i haven't expressed myself well, i know how to achieve that look with a point light, that's how i made the example in my first post.

The sphere was also just an example, in an actual scene you have alot of different light sources, but i want that ...

Happy new year everyone :D

I want to know if its possible to blur or make the transition from shadow to lit area (i guess its called the shadow terminator ? ) more smooth, without changing anything in the scene(e.g. lights) except the shader.

https://forums.luxcorerender.org/download/file.php ...

Yes, only BiDir was used.

Wooow, after I had checked everything again just to be sure... now i FOUND the real cause :lol: WTF, this bug is caused by the receiver , the ground geometry. Also the glossy material used only exagerrated the effect. :shock: Subdiving, cutting, adding edge loops ...

IIRC, there's something wrong with HDRI rotation. At least last time i checked it was quite different than in Cycles. Gonna test now.

EDIT... looks fine, just intensity differs a bit, but was expected... sorry for the false alarm :roll:

EDIT2
I think Path caustics with small resolution (1k ...

Dade wrote: Thu May 10, 2018 2:00 pm Can you attach the test scene with that point of view ?

Here are the files, and thank you for the fast response
The HDRI i've used is the same from here : HDRI Haven

https://hdrihaven.com/hdri/?h=furry_clouds

Hello community,

sorry to bump this thread again, but i’ve downloaded the new BlendLux Version ( BlendLuxCore v2.0 )

And tried my old scene again (first post in this thread ), and noticed that the BiDir render-mode is still flawed.
Somehow the generated caustics in front and behind the sphere are ...

Dade wrote: Wed May 02, 2018 4:42 pm

Dade wrote: Wed May 02, 2018 4:28 pm I'm fixing this problem.

I fixed the problem and now this is the BIDIRCPU output:


bidir.jpg

Wow Dade, thanks for the fast reply and the fast fix, too.

Hello Lux Community,

i have a problem with caustics and the Bidir rendermode, maybe you can help me out with it.

I cannot get a visible strong caustics effect with the bidir render mode and a hdri as lightsource.
I works fine with a sun light or spotlight, but i doesn't work with an hdri.

I know ...