Vray 5gpu issues with opacity maps

[hereiscris]

Am having issues with opacity maps in vray 5 gpu, here the description all tests were done with cuda and RTX
-label made with a plane and opacity map first with a png used for transparency, in vray cpu works not in gpu.
-label with a plane with a vraybitmap texture for the opacity map, no t works in gpu
-label with vrayblend material, no success.
-label that instead of using opacity am using the refraction map option with ior 1, no success.

Workarounds:
-the main issue is that the label is placed next to a reflective surface, when the label is disabled to be seen by reflection then it works, but still not the optimal solution.
-the reflective surface next to the label with reflection disabled, fixes the issue, but again not optimal solution.

is it a bug?, will be happy for a solution to this.

cheers,
Cris

[fixeighted]

Is your opacity definitely 100% b/w? I tried this now and both cpu/gpu are the same, as image.
This shows a plane with only an opacity map - no other changes to anything.

[hereiscris]

thanks for replying, actually is not the same situation, is 2 planes parallel to each other one of them is reflective and the other one is a label with opacity mask on the top. like a typical label situation.
i triple checked about the black percentage, it is 100% black.. white.

[fixeighted]

Yeah, my example is an opacity mapped plane on top of a reflective box, as your example. Naturally the label is a tiny fraction away from the surface, otherwise there will be issues with coplanar faces.

[nikoleta.garkova]

Hi hereiscris would it be possible to forward a sample scene with this reproducible so we can see the settings + maps used? You can write to support@chaosgroup.com, just make sure to mention this thread in the email. Thanks!