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Is there any way to only render and export a Position Pass? And would that export quicker than a full export?
So I have an urgent Christmas project I left exporting last night and, because I was so tired, I gave a name and path to the Output File instead of the Multi-Pass File… … And I absolutely need that multi-pass information, as I need the Position Pass in order to give the scene Depth of Field in AE.
It’s been exporting for over 12hs and now I come to find that all I have are simple, single-layered, no-multi-pass-informationed TIFFs!
I’m guessing there’s no way of retrieving the Multi-Pass data at this point, right? I mean, I don’t even think it was actually rendered… Normally, when one renders to de Picture Viewer without saving, everything is rendered; but it seems that when one uses the actual queue and saves the rendered files, whatever isn’t saved just disappears. (I’ve never made this mistake before, so I don’t know how this works.)
Is there any way to have C4D render and export only the Position Pass? (The Z axis, for that matter.) And would that even result in a much faster export that could save my life at this point?
Here’s hoping! ???? Thanks in advance!
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…So this is how I managed to bungle it up today. -
2 Replies
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preview render will remember as many frames as it can fit into the memory you set for that in Preferences/Memory/Picture Viewer for quick playback and cache the rest, don’t know if that is retrievable after a render. Don’t know that the render Queue saves anything.
And rendering a separate pass without the need to render the image is an often heard request (usually in a similar situation) but I would guess that render passes are pulled with magic math from the render data not ‘the render data assembled from the passes’ (since the passes didn’t exist at first – in the olden days).
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I’m assuming you’re using the standard renderer. If not then make a copy of your render settings and switch it to standard renderer.
Turn on material override in the render settings.
Create the most generic material…in fact, you can just turn all the channels off.
Add that new material to the material override of the render settings.
Under the multipass group, remove or turn off everything but “Post Effects”
Make sure the position pass effect is added to the render settings.
Now under Save, turn off single pass save and turn on the multi-pass save option and set your separate path.
Under Antialiasing, set it to “none”. Why? Because the position pass doesn’t use it but it will slow down the render.
Under “Options”, turn off everything but displacement if you need that and of course leave post effects on.The position pass should now render out incredibly fast.
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