Computer freezes in picture viewer in cinema 4d!

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Computer freezes in picture viewer in cinema 4d!

Postby jpalmer593 » Thu Apr 29, 2021 11:05 pm

jpalmer593 Thu Apr 29, 2021 11:05 pm
I have a rtx 3080 and am trying to render a scene In cinema 4d. I am using a lot of vram but have about 1.4gb still available.
Everything renders fine in the render viewer, but when I send to picture viewer, the scene takes about 50 seconds to load and then my computer completely freezes.

I’ve tried leaving it a lone for about an hour when this happens, but it will still stay freezes.

Is there any work around for this? Please help.
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Re: Computer freezes in picture viewer in cinema 4d!

Postby aoktar » Thu Apr 29, 2021 11:10 pm

aoktar Thu Apr 29, 2021 11:10 pm
It may be out of ram, check the triangle counts for render.
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Re: Computer freezes in picture viewer in cinema 4d!

Postby jpalmer593 » Thu Apr 29, 2021 11:14 pm

jpalmer593 Thu Apr 29, 2021 11:14 pm
Would that be ram or vram?
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Re: Computer freezes in picture viewer in cinema 4d!

Postby jpalmer593 » Thu Apr 29, 2021 11:19 pm

jpalmer593 Thu Apr 29, 2021 11:19 pm
Render viewer says tri: 1.62m / 9.941 m
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Re: Computer freezes in picture viewer in cinema 4d!

Postby aoktar » Fri Apr 30, 2021 12:03 am

aoktar Fri Apr 30, 2021 12:03 am
It's from Live Viewer. It can be different on Picture Viewer. Use the old trick, delete some content until render fixed. And find which part is causing this problem.
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Re: Computer freezes in picture viewer in cinema 4d!

Postby McClure210 » Tue May 04, 2021 10:36 am

McClure210 Tue May 04, 2021 10:36 am
It's probably to much for C4D to handle. How many polygons has the mesh / scene got? Bet it's a lot. Your best bet is to simplify the mesh before exporting it.
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Re: Computer freezes in picture viewer in cinema 4d!

Postby bepeg4d » Wed May 05, 2021 8:33 am

bepeg4d Wed May 05, 2021 8:33 am
Hi,
you can check the VRAM consumption in Live View info-bar:
https://docs.otoy.com/cinema4d/LiveView ... gress.html

To keep the polygons count low, it is very important to enable in c4d the Render Instance, or Multi Instance (R20/R21) option for all the objects that support it, like MoGraph Clonerrs, Instance Objects, or Particle Emitter.
Image

To keep the polygons count low, another trick is to disable all the Subdivision Surface objects in the scene, and apply to them an Octane Object tag, with the same subdivision settings in the proper tab.
Image

In this way, the subdivision will be applied only at render time, and the scene will be much easy to export and handle.

Also 32bit/16bit textures can be reduced to jpg/8bit, to save a lot of space.
Also setting the Imagetexture node to Float/Grayscale instead of Normal/RGBA, for all the Bump/Roughness/Metallic textures, and in general for all grayscale textures, can save up to 3x memory per texture.

Finally, if you reduce the Parallel Samples in the Kernel settings at 1, you can save some VRAM, but you are also reducing the rendering speed.

ciao Beppe
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