Stomach with Bifrost fluid simulation - Playblast
🕑 Added 2021-12-02 00:39:36 +0000 UTCHohoho, this has been a long time coming! Since there won't be any fur to render for the upcoming internal scenes, I've been able to migrate them to the latest version of Maya and fully rely on Redshift for rendering these. I remember posting about this back when I first started making the animation, as I had already migrated the stomach environment to the new renderer back then. I finally got back to it after the release of the Encounter 2 preview and started improving the materials a bit and fixed some visual glitches like that horrible UV displacement seam at the top of the stomach model.
Since I now have Maya's latest CG toolkit at my disposal, I thought I should go all the way with this scene and give fluid simulation another try. I had actually experimented with that many years back, but back then rendering a fully path-traced frame took multiple hours and wasn't really feasible for a one-man band animation house. I must also admit I was never particularly happy with the results of Maya's old fluid simulation methods, so I was quite thrilled to finally give this another try with Bifrost! It's quite funny since stuff like Bifrost and Realflow used to be almost exclusive to big-budget Hollywood animation and now it's pretty much accessible for everyone with a somewhat modern PC!

Since the stomach mesh had way too many polygons for particle collision, I ended up making an alternative low-poly mesh and transferred the animation onto it with a simple wrap deformer. Getting the fluids to move in a believable (and aesthetically pleasing) manner took quite a lot of iterations. A full simulation of 1200 frames took a full hour on my somewhat dated i7-8700K, which is why I ended up literally upgrading my CPU to an i9-9900K, which made working with this kind of heavy simulation a bit easier. The only remaining challenge will be the rendering, as a single frame already took about 10 minutes at 3K resolution. The additional fluids increased that up to 15 minutes, which means that for this specific scene I'll end up using frame interpolation, as rendering this at a native 60FPS is probably going to take so long that we'll see the release of a Duke Nukem Forever sequel by the time this finishes rendering. The heavy part here isn't so much the fluid sim, but the actual water shader, which uses multi-layered subsurface scattering, rough refractions, as well as caustics, while being on top of another complex material (the stomach surface). I swear, this thing could be its own ray tracing benchmark.
Note that December is going to be terribly rough for me as I'm still catching up on a ton of things that I needed to pause to get the recent preview out, including client work. I'm still hoping I can manage to get a decent portion of the internal scene done this month, which is still going to need a bit of additional work before I can get to back to animating it! In the meantime, thank you guys so much for the overwhelming feedback on the Encounter 2 preview! It was a huge relief for me to hear that most of you enjoyed it! ;w;
Comments
Vampire king
Sorry to rush I just wanna know if any updates will be soon I know this month is messy,just woundering
Michael Lee Vogel
It most likely will
MelloBoi
I'm curious is this animation gonna have alt angles as well?
Vampire king
Some leaked the video https://youtu.be/6VmiAhrE8a4
Ponlets
oh gawd this is magical :3
Michael Lee Vogel
This looks absolutely amazing cake. It also looks super realistic and cozy in there
Baz Yat
I'd put money on serious animation being Cake's 'day job' and that's why they avoid naughty bits - for safety. Cake's just too damn good at this stuff to be a hobbyist.
Boombaga
Amazing work cake, I have a weird question, have you thought of doing animation work as a job? As in, not through patreon, but like DreamWorks style animation job? Though I guess that'd be difficult with putting this stuff on a CV >.<
Ghostdragon
You're doing great Cake, don't give up. What you are achieving is absolutely incredible. I could never imagine trying to do the things you have been creating, let alone doing it solo! You will get there. ♥ ^.=.^
Cake, your work is getting to a point where it’s actually mind boggling. You really should think about collaborating with some names in the community, or doing a QnA. Your work transcends our little community by miles, and has definitely made more people aware we exist!
jeveasy
How beefy is your PC?
Jack asdf
This is amazing
Charles J Burgess
Have you thought about upgrading to a much more powerful workstation pc?
Khaki Chan
I have long awaited the day when I would see the inside of Zoe's stomach with "real" fluids inside of it X3
CrackMyKnuckles
Oh hell… 0////0;;;
Meddwynn Ravencroft
ooh, this just makes me want to be sent to Zoe's stomach even more to spend the rest of my limited time. >.<;
Disregard
This is outstanding work here, and very well could be a bench mark if you wanted it to be, haha! Best of luck going forwards, only can imagine the challenges you’re facing with the workload
Nezumi13
Daaaaaaamn.
Gun Slinger
Dude nice
nemopemba
Wow, that is fantastic. The stomach motions and fluids look incredible. Can't wait to see how it all comes together in the finished product.
Vampire king
Oh wow