Karma XPU: Volumetric Lighting / God rays?

5488 8 2

Oct. 30, 2021 3:31 p.m.

Hi,

Shamelessly asking before trying myself:

Volumetric Lightning and God Rays,
Possible in Karma XPU (Alpha)?

Thanks in advance.

Oct. 30, 2021 4:14 p.m.

it looks like it is possible but honestly i don't know if it would work in a production.

Edited by mandrake0 - Oct. 30, 2021 16:14:50

Attachments:
test_volume_light.png (858.2 KB)

Oct. 31, 2021 11:31 a.m.

Interesting. Will you maybe share that scene? I do not seem to get a similar result.

Oct. 31, 2021 2:13 p.m.

Also check out the karma fog box.

Oct. 31, 2021 2:56 p.m.

Andy_23
Also check out the karma fog box.

It doesn't look like a volume like it does in the CPU engine, but it looks just like polygons unfortunately.

Oct. 31, 2021 3:30 p.m.

I'm sorry, I didn't remember correctly if I tried the fog box with XPU.

Oct. 31, 2021 4:58 p.m.

i had to recreate the test setup, didn't know about karma fog but it looks like it doesn't work with XPU.

Attachments:
fog_karma_xpu_test.hipnc (741.5 KB)

Nov. 1, 2021 7:38 a.m.

mandrake0
i had to recreate the test setup

Thank you.

Interesting. So don't need to enable all those extra settings on lights (such as 'Volume Contribution' in RS) in Karma..

Aug. 8, 2023 3:42 a.m.

it works using karmafogbox with karma xpu/cpu. I am using H19.5

Attachments:
test-godray-xpu.hipnc (987.6 KB)
Screenshot_4.png (556.6 KB)

                    
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