3ds max gpu not disabling memory frame buffer

[wessam]

I need to render a big image, over 15000 pixels width, when using GPU/RTX and uncheck memory frame buffer and checking generate preview,
the issue is it keeps generating the full frame as if the memory frame buffer is checked and shows the full resolution and render layers accessible that leads to a crash coz of not enough memory.
please advise.

[vladimir_krastev]

Hi, thanks for posting. I can reproduce this on my end and it looks like a bug. I will investigate it a bit further and get back to the thread.

[hermit.crab]

the issue is it keeps generating the full frame as if the memory frame buffer is checked and shows the full resolution

Are you certain about this? Just did a few tests and it seems to work correctly in both CPU and GPU. Notice the "preview of..." title for the RGB channel and VFB window. Otherwise, any errors in the log? And which V-Ray version do you have installed?

EDIT: Vladimir seems to have reproduced it. We'll discuss it.

[wessam]

thanks for checking. vladimir_krastev , hermit.crab

Notice the "preview of..." title for the RGB channel and VFB window.

Preview of... is not showing it works with CPU, no unusual log data and I have latest VRay with 3ds max 2024 with all updates.

[hermit.crab]

After a bit more testing, it seems the issue is already resolved in the latest nightly builds (hence the mismatch between our tests in the first place). We also seem to have the issue logged (internal bug-tracker id: VGPU-6097). I've pinged the project managers about its eventual push to the stable builds.

Otherwise, there is a workaround using Standalone.
Quick how to:
1. Open command prompt
2. Navigate to the "vray.exe" usually located here: C:\ProgramData\Autodesk\ApplicationPlugins\VRay3ds Max2024\bin
3. Drag and drop the vray.exe in the command prompt
4. Afterward type the following commands:

vray.exe -scenefile = "path/to/scene" -rtengine = 7 -display = 0

Note that this will disable the VFB completely.