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About VR stuff

by Grimm3D

Hello again.

I've done some testing and it seems I may have to wait until Blender 2.8 is released (late this year I think) to render the rat animation. It will take at least 16-17 days of rendering 24/7 currently and I'm not sure if I can do that. At 2160x1200 it takes ~10 minutes / frame (including both L/R) and that will likely increase as I add stuff to the scene

Blender 2.8 has realtime renderer Eevee which should get such a simple animation rendered easily but I'm not sure if it can handle stereoscopic 360 rendering. I tried the current wip 2.8 version but it is completely broken still and I couldn't get anything done with it. Gotta wait and see I suppose.

Anyway, there's still a lot of polishing to do to get the animation in releasable quality so don't expect anything anytime soon. The animation currently has 2425 frames. I have everything animated except for possible extra ending scene. I'm not sure if it's necessary. Gotta think about it.

Also again, I'd really like to get some sounds for the animation so if you know someone who does sounds for animations I would appreciate if you could point me in the right direction. :)

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Added:	5 years, 11 months ago 17 May 2018 01:45 CEST

12 Comments on this Journal

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Gunn

5 years, 11 months ago

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Real excited to see~

Grimm3D

5 years, 11 months ago

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@ Gunn

Don't hold your breath. As you may have noticed it takes me quite a while to get anything done. :)

Feryl

5 years, 11 months ago

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Edited 5 years, 11 months ago by Owner

Most of the time the render speed is determined by your processor & GPU power. Not sure of the power you're running, but a pair of 1070 or 1080 Ti cards running in SLI config should be able to render even a 4K video at about 10 seconds per frame. At least mine does with my drone VR videos. *edit* Of course...that's a nearly $2k system. My total config cost around $5k to build for 4K 3D & VR video output.

SciMunk

5 years, 11 months ago

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Edited 5 years, 11 months ago by Owner

@ Feryl

Maybe consider redshift and gpu rendering, i can render my frame in full hd with million of fur in less than 5min, and removing fur would make each frame almost <10 sec, SSS included.

Ps : sorry didn't meant to post this comment as a 'reply', you're right about a pair of 1080ti,i use that, but sli is highly unrecommended

Grimm3D

5 years, 11 months ago

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@ SciMunk

Blender's Cycles already renders with GPU. I can also run another instance where I render different parts on CPU but that slows down the GPU rendering. The Eevee renderer I mentioned renders in realtime like a game engine while still keeping the quality on par with modern games. That should be enough for this animation.

The thing is that 360 degree video renders the whole scene in every direction and 2 times per frame since it's stereoscopic. So it takes much longer to render than a normal video which only renders a certain part of the scene at the time while every frame has to be rendered only once (unless it's goind to be stereoscopic non 360 degree video. ) I'm running an old Titan Black. Can't really afford any newer cards right now. Another card would be good though as I could then render the animation with both separatedly.

SciMunk

5 years, 11 months ago

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Edited 5 years, 11 months ago by Owner

@ Grimm3D

hmm, I just tried to render a 360 stereo pic, but it took 15 min with a single 1080 ti x), I may have cranked sample value too much and adding 700 time my character on the scene with full SSS and 170k poly each probably didn't helped.
I also didn't heard a lot of good about cycle, it not really production ready and have a lot to go before getting close to what other renderer are capable.
anyway, hope you'll make it through !

Feryl

5 years, 11 months ago

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@ Grimm3D

Good gravy, I hadn't thought about that. You're creating in VR & 3D at the same time. Yeah...I imagine that would require Pixar-level systems.

Grimm3D

5 years, 11 months ago

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@ Feryl

Yeah I know. I'm rendering on my GPU which is old Titan Black. I can also render other parts with my CPU (i7 7700K) simultaniously but that slows down GPU rends a bit since it still uses CPU to prepare the scenes for the GPU. I can't really afford to buy any gfx cards currently. Obviously dual 1080Ti cards would help but they are sort of expensive. Or even any second gpu would be beneficial as I could run another Blender which would render on that card.

I think we are talking about renderings here. Rendering a video shot by a drone is sort of different than rendering a 3d scene where the lighting, animation, geometry and stuff has to be created from nothing. There is no gfx card that would render my scene in 10 seconds even though it is quite simple still.

BizyMouse

5 years, 11 months ago

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there are a lot of tricks I do to get things at 30-60 seconds per frame. and I render most things at 720p because cgi is so sharp anyway that by the time I throw post-effects on it there's no need for a 1080p master. squeak at me on discord sometime if you want.

Grimm3D

5 years, 11 months ago

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@ BizyMouse

720 isn't really enough for 360 degree video meant for vr goggles because the image "stretches" to cover 360 degrees around the viewer. That also increases render times. (my test rend was 720 and it was kinda blurry.) Also each frame is rendered twice, one for each eye. That is included in the 10 min render time. Otherwise some optimizations might help but no point in doing that before the animation is ready to be rendered.

Nech

5 years, 11 months ago

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could offload segments to others for concurrent rendering?
even if only 6 people offer youd get it done in just shy of 3 days with that 10 minute per frame render rate; those with 10xx series cards would drastically reduce that further

Grimm3D

5 years, 11 months ago

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@ Nech

That's always a possibility if there are people who are interested I suppose.

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