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🧵 Rendering by layers in Blender
Anonymous at Sat, 30 Oct 2021 10:13:22 UTC No. 859117
I've been using Blender for 6 months and I didn't know this was a thing. So, to make things quick, I got a scene that exceeds the maximum available VRAM of my GPU so... can I hypothetically render a part in one layer and then the other in another layer and then mix everything in the compositor???
>inb4 try it yourself
Can't right now, I'm injured and at bed, but this question doesn't let me sleep.
Blendchads help
Anonymous at Sat, 30 Oct 2021 10:50:21 UTC No. 859124
sounds like you need XPU
Anonymous at Sat, 30 Oct 2021 11:37:07 UTC No. 859131
>>859117
You can, but if the other part of the scene is dependent on the source you still use the info from both layers.
Really the layers are mainly just to isolate elements for compositing, though it's largely been usurped by the Cryptomatte.
Depending on your scene, it might just be a good idea to take creative shortcuts. Like using matte planes for background elements instead of actual geometry, or compositing a shot to not have a ton of elements in the scene.
If you give some info about what it is you're trying to do and what the scene looks like, we could probably give more specific tips. Since you might be trying to brute force a scene on your GPU when there's probably better ways to do it.
Anonymous at Sat, 30 Oct 2021 15:41:39 UTC No. 859169
>>859117
>I hypothetically render a part in one layer and then the other in another layer and then mix everything in the compositor???
Yes, but practically, there are tons of options.
You basically have total pixel control over every kind of image data a renderer gives you if make use of it with an compositor.
Research render-passes, AOV's, matte-objects, shadow-catcher, cryptomatte and camera projection in order to get a grip on that topic.
Not only can you sidestep VRAM issues and render massive scenes, you can make your render much faster while increasing the quality as well.
Anonymous at Sat, 30 Oct 2021 17:24:00 UTC No. 859181
Do blendlets really...
Anonymous at Sat, 30 Oct 2021 17:38:01 UTC No. 859184
If you don't render passes to OpenEXR containers, then you're not fit to be a VFX artist.
Anonymous at Sat, 30 Oct 2021 18:28:27 UTC No. 859196
>>859117
yes, rendering by layers is basically old as fuck technique called compositing.
Did u know blender has a compositor?
wow.
Anonymous at Sat, 30 Oct 2021 18:53:08 UTC No. 859204
>>859184
>OpenEXR/EXR
This. Unless you want to end up with a dozen or so individual folders for each pass of each individual element.
https://en.wikipedia.org/wiki/OpenE
Anonymous at Mon, 1 Nov 2021 23:38:26 UTC No. 859682
>>859204
>OpenEXR/EXR
Compatible with blender?
Anonymous at Tue, 2 Nov 2021 03:34:31 UTC No. 859724
>>859682
Yes.
Blender both outputs and accepts EXR images.
Anonymous at Tue, 16 Nov 2021 04:48:59 UTC No. 862352
>>859117
Yeah
Here's a good tutorial on rendering layers in Blender:
https://www.youtube.com/watch?v=-Gg
And here is a very good ongoing series on compositing in general, regardless of what software you use:
https://www.youtube.com/watch?v=-Gg
https://www.youtube.com/watch?v=csG
https://www.youtube.com/watch?v=akw
https://www.youtube.com/watch?v=iNV
Anonymous at Tue, 16 Nov 2021 04:50:14 UTC No. 862353
>>862352
The first link was supposed to be this:
https://www.youtube.com/watch?v=bIZ
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Anonymous at Tue, 16 Nov 2021 09:54:21 UTC No. 862392
>>862353
>>862352
>Compositing in your 3D application
What year is this?
Anonymous at Tue, 16 Nov 2021 18:41:51 UTC No. 862491
>>862392
Yeah, Blender's compositor isn't really that great. It's only meant for simple post effects in renders. Things like mist, glare, lens distortion, etc. Or, just to combine your render layers, maybe some simple keying, if that's all you're doing.
For serious compositing, I'd use either Nuke, or Fusion, or even Natron.
Ironically enough, Blender Bob mentions all of this in that 2nd series that I linked. He uses Nuke for most of the tutorial, despite his channel name.
Anonymous at Tue, 16 Nov 2021 18:48:36 UTC No. 862493
>>862491
>Nuke
>Fusion
My two go-to's since forever...or at least close to two decades. Will never use Nuke privately however because I despise The Foundry.
Anonymous at Tue, 16 Nov 2021 19:12:54 UTC No. 862496
>>862493
Without Mari (same company), many shots would simply be impossible. I guess you like having your head firmly buried in the sand.
Anonymous at Tue, 16 Nov 2021 19:23:27 UTC No. 862498
>>862496
I used Mari at work for close to 8 years. Will not use it privately however for reasons already stated.
Anonymous at Tue, 16 Nov 2021 19:32:22 UTC No. 862499
does anybody have the /3/ collab webm?