Help splitting LARGE image for cloud rendering - V-Ray ignores render region

[leuey]

Ok, long title. Basically I have a very large render (16k x 8k) and I want to split it up for network rendering. So, my thought was to animated the render region. So a small render region (1% of the image) that moves each frame for 100 frames - put this on the cloud and each computer gets a frame with a different region to render. This does not work with V-Ray...V-Ray doesn't seem to check where the render region is after frame 1. So all frames render the same region - even though the region is different for each frame.

So...how does one deal with this? I plan on using Rebus Render...they work with V-Ray modo. Is there perhaps a Pre-Frame command I can put in there to set the render region for each frame?

[leuey]

ok...so an texture render mask that's a sequence of images (white rectangle moving across a black background) may work.

[boyan]

Hey, Greg,

This can help you: https://drive.google.com/file/d/1oPS...9hbXlfSYY/view

Cheers,

[vladimir.nedev]

If you could run a select.time command to select the frame that's going to be rendered, I think it will work.
This will NOT work if you are rendering more than one frame using the vray.render.animation commands.

Non-animatable channels are sampled at the current Modo time.
This includes stuff like render resolution, render region, motion blur on/off, DOF on/off.
I guess I did it like this so the result would at least match what you are currently seeing in the Modo UI/Viewport.
Maybe it would have been better to instead sample the channel at the first frame of the animation.
Then your use case would work out of the box.

Some of these channels are just not-animatable in the V-Ray Core.
Although it seems, the render region is, so maybe it can be fixed to work with the .vray.render.animation command as well.

Greetings,
Vladimir Nedev

[leuey]

Thanks guys, I think we've found a way to hack around it..will report back.