Brightness difference between Vray Rt and Vray production

[largil]

Hello,

I have a serious problem of brightness between Vray rt (gpu) and Vray Production (cpu), I joined the two images, as well as the Modo file,
thank you for helping me.

https://www.dropbox.com/s/14q9y58nn0...ht_02.lxo?dl=0

[boyan]

Hey,

The reason to have these results is Env. Importance Sampling option, which seems not export the texture map when Environment map use Light Probe image maps as in your case. In order to fix this disabled it or avoid the Light Probe texture maps for now.

Cheers,

[largil]

Thank you Boyan,

It works, but when I disable the EIS I have a lot of noise in the rendering, it does not matter I think I will launch the final rendering with RT it works very well.
Thank you for your fantastic work.

Cheers.

[boyan]

Hey,

How to resolve the scene: In order to achieve the result Go to "Global Options - advanced" in V-Ray Main tab and disable the "Show GI only" option, this is the reason to get this weird result. Next steps -> Change the Secondary Render GI to Brute Force and disable the Ambient Occlusion option as well. You Don't need to Disable the EIS. You can use and Progressive image and set the sampler as well. I think 10 min. will be enough. Also, check the Shadow Catcher option.

The fixed scene file can be found here: https://drive.google.com/file/d/1bo6...y_yficLmA/view

Cheers,

[largil]

Hi Boyan,

It works well,
Thank you for your precious help.

Cheers.