Vertical seam with VrayHDRI map as viewport background

[Alex_M]

I load HDRI maps as the viewport background from time to time for preview purposes. The problem is that I get a seam running all the way vertically if I load the HDRI image via VrayHDRI map. Strangely, this doesn't happen if I load the HDRI via the Bitmap map. The problem is only in the viewport. The seams don't appear when rendering.

Please check the attached screenshot. Max 2016 SP3, Vray 3.30.03.

[matanov]

What type of mapping is this - spherical ? I can't reproduce this... Can you share your settings and the HDRI itself ?

[Alex_M]

Yes, spherical mapping. No need to show settings and send HDRIs, I think. Everything is at default and it happens with every HDRI on 2 different workstations. Just start a new empty scene, make the viewport show the environment, choose a random equirectangular HDRI and load it in the environment slot with the VrayHDRI map in spherical mode. We're using Nitrous display mode (DX11 level) if that helps.

[matanov]

Reproduced it, thanks.

[vasil.minkov]

The seam is caused by the Blur option on the Coordinates rollout. VRayHDRI does not support blurred spherical environment so as a workaround you could set Blur=0.01 to remove the seam.

[vlado]

Hm, I thought that enabling the tiling option in the texture should fix this... but if not, we should definitely make a note to look into it.

Best regards,
Vlado

[Donfarese]

Noticed the seam renders with RT, but not with advance.

[matanov]

Noticed the seam renders with RT, but not with advance.

You are talking about RT GPU, right ?

[Donfarese]

You are talking about RT GPU, right ?

Yes RT GPU

[svetlozar.draganov]

Thanks for the feedback, this is a known bug which is already reported into our system.
We'll let you know when it is fixed.