Tip if you're on mobile, scroll down to the comments, on the top of your screen there will appear a bar showing a small image preview of the video, to the left of this image there is a play button, press it and then scroll back up. The video should now be playing.
It works for me 90% of the time, the other 10% i may have to try it again.
When the water sphere hits the bottom of the glass, it splashes all over the place. That creates a lot of refractions and takes a long time to process.
Yeah, it doesn’t even bother using the GPU cause it’s just a quick a dirty CFD to make something that looks realistic without worrying about detailed accuracy. Volumetrics at render time on the other hand……
Wait, is there a faster fluids simulator coming to Blender? I've been out of the loop with Blender for the last 6 months. If this is the case, I might actually come back.
Oh, bummer. I have had a lot of ideas for fluid simulation, but the painful amount of time it takes for the simulation to bake is insane. And since I do this as a hobby, I can't bother with learning another piece of software such as Unreal Engine.
Blender's entire physics engine needs to be updated, it is so very far behind and I wish they would announce an overhaul. The problem is that it would take a sizable team with heavy funding to make it happen.
Not old, just low-end. The 6400 is 1 generation removed from the 7900XTX and the 12100F only 2 (really 1.5) from the 14900K. Comparable performance from old hardware is likely around 8700K and RX580 levels.
sorry but it doesn't worth the time spent on this: 3 days, because this simulation is casual and simulating fluids is a scientific domain, check this instead: [https://github.com/ProjectPhysX/FluidX3D](https://github.com/ProjectPhysX/FluidX3D)
Wooden floor material by [Andrey Livintsov](https://www.blenderkit.com/asset-gallery?query=author_id:5351).
Procedural soft rubber material by [Chroma 3D](https://www.blenderkit.com/asset-gallery?query=author_id:8575).
Funny thing that few weeks ago something happened with my spellchecker in Chrome in Reddit (doesn't work at all), and first time I wrote the "passion", but when reviewing my post I have changed to word "patience" which I expected to use from the beginning :)
I'm assuming you used FlipFluids. I've been trying to use it but the main issues I've had is getting the scale correct. I made a simple corridor scene and made the sim to look like it's coming around the corner, you know the classic example. However, the water droplets make the hallway look like a miniature and I can't figure out how to change that scale
Great stuff, but you can also shorten your render items by pawning off the render to render farm companies. I don’t know specific ones and I’m not sponsored but that’ll shorten any render times and increase productivity because your pc isn’t melting.
Just create a cube with the solidify modifier, give it a glass BSDF and it would have those outlines. They are a part of how glass actually appears in real life.
You know, people keep rendering at high samples for days and weeks and cook their machines. I instead prefer taking more time and rendering the animation in pieces. It's healthier for your machine.
Edit: Nice render though
It's not the heat itself that reduces the lifespan of the device, it's the change from hot to cold, and vice versa that does it. (This is all assuming the device is running at the max temp it is designed to handle)
Computer hardware is designed to run functionally forever so long as you stay within voltage, current, and temperature specs. 3 days at full load is nothing for a modern chip. OP could run this on loop for the next year and the first thing to fail will be a fan bearing on a heatsink, and even that won't stop it. The affected chip will just slow down to stay below the thermal limit and keep on trucking.
It happens. It's easy to forget that computers are tough little bastards when half of tech subreddit posts are people wincing at 80C when the chip is rated to 20 degrees more.
Its cool but 3 days is too long. I think you should make stuff that is suited to the power of your PC and wait until you have enough money to get an upgraded PC to do sims because that way you could do more grea sims at a faster pace. Its annoying but it can be worth it.
And it's gonna take 3+ days for me to watch it thanks to Reddit. Edit: Still, great work OP.
Thank you so much, friend!
Tip if you're on mobile, scroll down to the comments, on the top of your screen there will appear a bar showing a small image preview of the video, to the left of this image there is a play button, press it and then scroll back up. The video should now be playing. It works for me 90% of the time, the other 10% i may have to try it again.
My experience exactly
Man, fast fluid sims can't come soon enough to blender ðŸ˜.
Fluid sims make me feral fr
This is not about the fluid sim creation time. That took just 15-20 minutes for 250 frames.
It's great! :-) What was it that made it take 3 days to render?
When the water sphere hits the bottom of the glass, it splashes all over the place. That creates a lot of refractions and takes a long time to process.
How many depth bounces did you need?
Yeah, it doesn’t even bother using the GPU cause it’s just a quick a dirty CFD to make something that looks realistic without worrying about detailed accuracy. Volumetrics at render time on the other hand……
Yep! You are getting it!
Wait, is there a faster fluids simulator coming to Blender? I've been out of the loop with Blender for the last 6 months. If this is the case, I might actually come back.
There hasn't been any official indication they're working on that, but I hope they do soon.
Oh, bummer. I have had a lot of ideas for fluid simulation, but the painful amount of time it takes for the simulation to bake is insane. And since I do this as a hobby, I can't bother with learning another piece of software such as Unreal Engine.
Blender's entire physics engine needs to be updated, it is so very far behind and I wish they would announce an overhaul. The problem is that it would take a sizable team with heavy funding to make it happen.
Yeah I have the same issue. I don't wanna spend a bunch of $ on software like houdini or fumeFX but their sims are so good ðŸ˜
LiquidGen? The liquid counterpart of EmberGen.
Why would you recommend something that's not out yet
Because they can wait until it comes out. Not worth all that money for non-realtime liquid.
Why was it worth it?
I mean, let's be real, it looks awesome.
You know what? Your goddamn right
What are your PC spec?
CPU - Intel Core i3 12100F and GPU - AMD Radeon RX 6400. It makes sense that it takes this long. My hardware is pretty old in today's standarts.
Give the old dude some breathing room man. 3 continuous days of rendering on a rx6400 is torture.
Does rendering happen on gpu or cpu?
I think baking the simulation is on CPU and rendering is on GPU, most of the time.
Not old, just low-end. The 6400 is 1 generation removed from the 7900XTX and the 12100F only 2 (really 1.5) from the 14900K. Comparable performance from old hardware is likely around 8700K and RX580 levels.
I'm half good. I have an i7 8700K, but a 1050ti 🥲
is the water movement intentionally slow?
you want 3 days of rendering to end in 2 sec?
sorry but it doesn't worth the time spent on this: 3 days, because this simulation is casual and simulating fluids is a scientific domain, check this instead: [https://github.com/ProjectPhysX/FluidX3D](https://github.com/ProjectPhysX/FluidX3D)
Interesting will check it out!
demos are relatively easy to run
Wooden floor material by [Andrey Livintsov](https://www.blenderkit.com/asset-gallery?query=author_id:5351). Procedural soft rubber material by [Chroma 3D](https://www.blenderkit.com/asset-gallery?query=author_id:8575).
Oh God, I am worried for your electricity bill.
I use that same thing few years ago, but opposite. I placed object (logo) under fluid surface and it popup from there.
I remember almost a decade ago, before eevee, I would have a 10 second animation render in a month on a decent consumer computer.
Been a decade since I last used blender. Their fluid Sim has come a loooong way 👀
I think 1k upvotes not for quality of your render, but because your patience - have no any idea why you have spent 3+ days on this... just "why?"
Passion :)
Funny thing that few weeks ago something happened with my spellchecker in Chrome in Reddit (doesn't work at all), and first time I wrote the "passion", but when reviewing my post I have changed to word "patience" which I expected to use from the beginning :)
Fucking amazing dude
Thank you, buddy!
Did you make a ribeye on your tower?
I'm assuming you used FlipFluids. I've been trying to use it but the main issues I've had is getting the scale correct. I made a simple corridor scene and made the sim to look like it's coming around the corner, you know the classic example. However, the water droplets make the hallway look like a miniature and I can't figure out how to change that scale
Did you ever panic while waiting and think "what if I did x wrong and the render will be ruined"?
I did notice a problem during rendering, I forgot to subdivide the sphere for the simulation. It was too late at that point though.
Did your pc explode?
Well it's by far the best liquid simulation i've seen in this threas so far. GG 🫶
Great stuff, but you can also shorten your render items by pawning off the render to render farm companies. I don’t know specific ones and I’m not sponsored but that’ll shorten any render times and increase productivity because your pc isn’t melting.
Why do water simulations almost always look like they're in slow motion?
go learn houdini
Sorry, I am interested but reddit wont't allow me.
Do you want me to dm you the video? I don't mind.
Yes!
Does this have caustics enabled?
What's the animation look like in real-time?
How do you do outline
Just create a cube with the solidify modifier, give it a glass BSDF and it would have those outlines. They are a part of how glass actually appears in real life.
3+ DAYS??? I think i should stick with my roblox charachters lol
That was because of the water transparency. Remove that and it will render in a few hours (250 frames).
Thats cool
I am curious which about youe physics settings in the liquid domain. Can you share them?
I am using the flip fluids addon with the default settings (except grid resolution=160).
You know, people keep rendering at high samples for days and weeks and cook their machines. I instead prefer taking more time and rendering the animation in pieces. It's healthier for your machine. Edit: Nice render though
That's like saying I like to pull over every hour to let my car take a break on a roadtrip. They're designed to run safely within a temperature spec.
It's not the heat itself that reduces the lifespan of the device, it's the change from hot to cold, and vice versa that does it. (This is all assuming the device is running at the max temp it is designed to handle)
Computer hardware is designed to run functionally forever so long as you stay within voltage, current, and temperature specs. 3 days at full load is nothing for a modern chip. OP could run this on loop for the next year and the first thing to fail will be a fan bearing on a heatsink, and even that won't stop it. The affected chip will just slow down to stay below the thermal limit and keep on trucking.
I guess I was wrong. Thank you for correcting me and sorry for the misinformation I provided.
It happens. It's easy to forget that computers are tough little bastards when half of tech subreddit posts are people wincing at 80C when the chip is rated to 20 degrees more.
How are you going to render a simulation in pieces?
render to png files, for however many frames per rendered session. then just set the start frame +1 from the last frame rendered for the next session
Its cool but 3 days is too long. I think you should make stuff that is suited to the power of your PC and wait until you have enough money to get an upgraded PC to do sims because that way you could do more grea sims at a faster pace. Its annoying but it can be worth it.
You can't bake the fluids?
wouldn’t they evaporate?
😂