OTOY Forums

Hi face,
I have an error after reloading the Octane viewport.
Any ideas?
Thanks
Refracty

My guess is the scene is very heavy on geometry. We currently have a limit in how much memory is taken up by geometry, which is 2GB. This limit is there for performance reasons.

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Roeland

It is a complex scene but the Graphics Card has 12 GB and should handle it easily.
Why is there a limitation?
I need the scene to run.

Refracty wrote:It is a complex scene but the Graphics Card has 12 GB and should handle it easily.
Why is there a limitation?
I need the scene to run.

As Roeland said, it's there because of performance. If it wouldn't be there everything would render ~10% slower. And no, currently we can't switch between those two modes. Octane 3 will allow larger geometry. Until then you have to reduce scene complexity.

You can reduce the number of triangles in the scene by selecting appropriate meshes, and in the Properties->Object window, tick Custom Mesh, click Adjust->Simple Controls, and move the slider towards "Fewer Polygon".

Paul

Thank you Marcus and Face for the clarification.
Unfortunately I can not reduce the scene much more. It is a big architecture scene and I have already shrinked everything to a minimum.
My client is using VRay at the moment but I am working on bringing this project into Octane to have more instant feedback.
So lets wait for Octane 3...

So is there any advantage of using a graphics card with more then 6GB VRam in Octane 2 ?
It looks like that the geometry limitation makes a 12GB Card useless.

Keep in mind the the render pass outputs (ie. the Viewport) take VRAM too - so if you render very large resolutions, it will take a lot if VRAM. Plus you 12GB can be used to store texturemaps.

Paul

That is true. On the other side out of core rendering will minimize the VRam consumption for textures with acceptable performance loss.
Hopefully Version 3 will bring the solution for this heavy scene.
Cheers
R

Using a different scene I am running into the same problem. I have a detailed Car interior with exterior on seperate obj files with more then 20.000 Polys. The TitanX shows only a consumption of 15 percent when I only load one of them. So much headroom.
But I am not able to load them together. That is a pitty because I thought Octane is now ready for Automotive Visualisation (of heavy tesselated cars) when the TitanX came up.
Can the geometry limit be removed easily? I need to work with Octane when doing this kind of renderings.