(Resolved) [HOU-2730] Vray Light Texture doesn't work properly in GPU mode

[creac]

Hi, Light texture doesn't render properly in GPU mode. It looks darker and doesn't update when intensity value is changed. Any way to fix this? As our project workflow is GPU interactive based it is very annoying. Thanks

[chakarov]

Hello creac, I can't reproduce the problem.
Which light is that ?
What type of texture you are using ?
Houdini version ?
V-Ray version ?
OS ?
What is your video driver version ?
Can you share a simple scene with the problem?

[creac]

Hi chakarov ,
I am using 18.5.596 on windows 10

V-Ray for Houdini hash:fb365cd from 16 Jun 2021 11:44
V-Ray Core 5.10.20 [5322b47e] from 4 Jun 2021
Driver RTX 2070 471.41

See attached files.

Thanks.

[chakarov]

The problem seems to be caused by the Directional parameter of V-Ray Rectangluar Light, I've reported the problem. As a workaround the closest value where the problem does not appear is 0.99888.