Full invisible area light

[Dade]

But in the case of an area light, isn't the current behaviour of this setting to lead to a black mesh being visible in reflections, instead of being invisible?

Yes, a light source can only avoid to emit light, not become transparent (if it is not already, like all not-intersectable light sources: point, spot, etc.).

[marcatore]

It is already possible to make a light source invisible to specular materials, there is a dedicated flag for visibility on diffuse, glossy and/or specular materials

Oh..sorry. You're right.
I've tried and it works. Good. And MIS is still there...at least the sampling seems the same of the "normal" area light.

But in the case of an area light, isn't the current behaviour of this setting to lead to a black mesh being visible in reflections, instead of being invisible?

Yes, a light source can only avoid to emit light, not become transparent (if it is not already, like all not-intersectable light sources: point, spot, etc.).

I'm trying with my test scene..but I can't understand why you said that it become black...I've tested both with glossy and specular material and I can't see the black shape of the area light. Where am I wrong?

[Dade]

I'm trying with my test scene..but I can't understand why you said that it become black...I've tested both with glossy and specular material and I can't see the black shape of the area light. Where am I wrong?

It works as far as I know

[B.Y.O.B.]

The orange juice scene is now broken (it uses white shadow color for the glass).

It looks like you haven't updated your sources, like I wrote, I fixed that problem too.

I only tested the latest build from github (on Windows), which shows this problem.

edit: I can also reproduce the problem in the orange juice scene with a custom build from the latest sources, done on Linux.

[Dade]

The orange juice scene is now broken (it uses white shadow color for the glass).

It looks like you haven't updated your sources, like I wrote, I fixed that problem too.

I only tested the latest build from github (on Windows), which shows this problem.

edit: I can also reproduce the problem in the orange juice scene with a custom build from the latest sources, done on Linux.

The builds are not updated, it has been fixed by this Sunday commit: https://github.com/LuxCoreRender/LuxCor ... 4aa0c2ca08

[B.Y.O.B.]

But I tested that on Linux, and it still shows the problem.
Is the orange juice scene working fine on your end?

[Dade]

But I tested that on Linux, and it still shows the problem.
Is the orange juice scene working fine on your end?

Yes, it does.

[Fox]

The orange juice scene is broken for me too. But i only tested CPU path.
Bidir works.

[B.Y.O.B.]

Ok, now the latest Windows build works correctly.