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I've found that VraybumpMtl requires extremely high values for "Bump amount" with GPU. To the order of several thousands. This does not happen with the CPU engine and a bump amount of 10-60 is enough in 95% of the cases. Interestingly, the material preview shows the bump amount correctly. It's only in renders that it shows very weak. Also, if I turn off the bump map in the base material, the bump amount of the VraybumpMtl goes back to expected behavior, and similar to CPU, values of 10-60 are enough again. I have made a video (attached). As you can see, I had to increase the bump amount to 6000 and the bump effect is still barely noticeable.
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Last edited by Alex_M; 05-06-2022, 04:51 PM.Max 2023.2.2 + Vray 6 Update 2.1 ( 6.20.06 )
AMD Ryzen 7950X 16-core | 64GB DDR5 RAM 6400 Mbps | MSI GeForce RTX 3090 Suprim X 24GB (rendering) | GeForce GTX 1080 Ti FE 11GB (display) | GPU Driver 546.01 | NVMe SSD Samsung 980 Pro 1TB | Win 10 Pro x64 22H2 -
Thanks for the report Alex,
This is something that I hit in production many times, also it makes Bump mapping look very different between CPU And GPU
I logged the issue as VGPU-5865, and I added this item to the GPU roadmap
Best,
MuhammedLast edited by Muhammed_Hamed; 10-06-2022, 03:17 AM. -
This is fixed, and will be part of the next Beta build
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Would this affect Vantage at all?Kind Regards,
MorneComment
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ie. would Vantage need that fix also?
(I could not edit my previous post. Seems the vray 6 beta section is restricted from editing)Kind Regards,
MorneComment
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