Luoshuang's GPULightmass

[Muchasty]

After some changes ( material One-Sided, replaced point light lines by spots ) Image look better, but still have some "sparks" mostly visible on the ceiling ( but is everywhere - mostly on walls )

[Muchasty]

"sparks"

[Rawalanche]

Most of modern path tracers use ray clamping (max sample intensity/max ray intensity) values to prevent fireflies. I am wondering of this GPULightmass uses it as well. If not, then that's what could be attributed to those blurred fireflies. It definitely should be used.

[Luoshuang]

After some changes ( material One-Sided, replaced point light lines by spots ) Image look better, but still have some "sparks" mostly visible on the ceiling ( but is everywhere - mostly on walls )

I believe this is more or less a bug in GPULightmass's adaptive sampler. Would you like to send me your scene (or a simplified version) for debugging?

Most of modern path tracers use ray clamping (max sample intensity/max ray intensity) values to prevent fireflies. I am wondering of this GPULightmass uses it as well. If not, then that's what could be attributed to those blurred fireflies. It definitely should be used.

Ray clamping is most useful when handling glossy/specular and other 'spiky' BRDFs. For lightmap baking the scene is pure Lambertian diffuse so it is currently not used. Still, I would try it to see its effectiveness .

[lkkchung]

This looks really amazing. Any information on the CUDA version I need to have installed? I have 9.0176 and I got an error that said:
"CUDA driver insufficient for CUDA runtime version"

[Vinametall]

Works with swarm DR ?

[Chesire]

Do you plan to implement support for Precomputed AO-Mask (if it's possible)?

[TZI9]

Hi, encountered this issue when I am trying to build with GPU. Please help

[Julian Vinet]

TZI9 look at the previous page

[Luoshuang]

This looks really amazing. Any information on the CUDA version I need to have installed? I have 9.0176 and I got an error that said:
"CUDA driver insufficient for CUDA runtime version"

It's not your CUDA version, actually you don't even need CUDA SDK to be installed. It's your display driver version that is too low.

[Muchasty]

Thanks to Luoshuang problems have been fixed

[smbv1]

Thanks to Luoshuang problems have been fixed

How did you fix it?

[ZkarmaKun]

Hey Muchasty how long took your bake?, excellent job btw!, and Luoshuang man!, you rock, just wanted to say, this should be a spotlight

[Muchasty]

The problem was two-sided material (replaced by one-sided ), not supported point light length ( replaced by spot), and sparks made from the one of LED emitter in my coffee machine model ( added node LightmassReplace to avoid bake cause all what is an emitter is used to add the light to the scene by the GPU Light mass).
Bake time 10 min. And I was very surprised when I saw that bake with active Swarm (I have prepared for net bake on CPUs) is made on all machines that have GPU on board in the network.

[Norman3D]

The problem was two-sided material (replaced by one-sided ), not supported point light length ( replaced by spot), and sparks made from the one of LED emitter in my coffee machine model ( added node LightmassReplace to avoid bake cause all what is an emitter is used to add the light to the scene by the GPU Light mass).
Bake time 10 min. And I was very surprised when I saw that bake with active Swarm (I have prepared for net bake on CPUs) is made on all machines that have GPU on board in the network.

It also works if you set emissive boost to that staticmesh to be 0.0