How to make a random 4 color tile floor?

[glennco]

Hello,
I have 4 specific colors that my client wants placed on a floor in a random pattern.
They will be 12inch x 12inch square tiles.
I tried generic material>tiles in the texture slot >with Multi-Sub plugged into the color tile texture slot.
Then applying to 1 flat surface (floor).
I can’t get it to work properly.
Will this method work?
I also made a series of 12”x12” surfaces, then applied the material to all of them. That works with CPU, CUDA/GPU doesn’t’ work.
Or is there another way?
Using Vray 5.106, Rhino 7.15, Cuda (CPU & GPU).
Thank you for your assistance,
Glenn

[fixeighted]

Using 3DSMax it's simple to use a vraymultisub map on modeled tiles.
Maybe that'll work also in Rhino.

[Muhammed_Hamed]

Hi Glenn,

Could you please upload to me a simple scene for the effect that didn't work on Cuda/RTX but worked on standard V-Ray(CPU)
I will talk to our devs about supporting this on GPU. I will ask around the team as well, incase someone has a workaround for you in Rhino

Best,
Muhammed

[glennco]

Muhammed_Hamed
Hi Muhammed,
Thanks for the reply. Strange thing happened as I was preparing a clean file with just the floor. I rendered with CUDA CPU/GPU and it worked as expected (randomly distributing the 4 colors across the 12"x12" tiles). Then I went back to the complete file, and that worked as expected with CUDA CPU/GPU also.
So now both CPU & CUDA give the desired results.
I have no idea how or why.
Thanks for the help,
Glenn

[Muhammed_Hamed]

Hi Glenn,
Thanks for the update, sometimes the GPU drivers go to this odd state specially if you keep the system running for a long time. A system restart should fix this
I'm glad you were able to solve your issue.

Best,
Muhammed