V-Ray RT-GPU Shadow-Catcher

[pixelwerk]

I was just wondering if V-Ray RT-GPU is supporting a shadow-catcher, since GPU-renderers in general struggle with rendering semi-transparent alphas. I'm using MODO and the CPU-Version of the shadow-catcher works perfect, but when using the RT-GPU it doesn't. Is this still a limitation of GPU's

[savage309]

We have that in 3.5. I guess it should come soon to Modo as well.

Best,
Blago.

[pixelwerk]

We have that in 3.5. I guess it should come soon to Modo as well.

Best,
Blago.

Glad to hear that it's already solved. In this case I just need a little patience until Vladimir Nedev and his team implement this little gem.

[ricoholmes]

Can anyone explain what I'm missing with the GPU shadow catcher because I just can't get it to match CPU.

(Maya 2017 Vray 3.5 Cuda)
vrayobjectproperties > Matte Properties
Matte Surface (on)
Alpha Contribution -1
Generate Render Elements (on)
Shadows (on)
Affect Alpha (on)

Works perfectly in CPU, but I get a semi-opaque dark surface (alpha) in CUDA.

[savage309]

Can anyone explain what I'm missing with the GPU shadow catcher because I just can't get it to match CPU.

(Maya 2017 Vray 3.5 Cuda)
vrayobjectproperties > Matte Properties
Matte Surface (on)
Alpha Contribution -1
Generate Render Elements (on)
Shadows (on)
Affect Alpha (on)

Works perfectly in CPU, but I get a semi-opaque dark surface (alpha) in CUDA.

Easiest will be to send scene the support to check it out (even if it is a very simple one). Also, the matte mtls result will not match the CPU (however, I want to check the scene just in case).

Best,
Blago.

[ricoholmes]

Absolutely, I'll do that. Thank you Blago