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Playing with liquids+bottles

Posted: Mon Oct 25, 2021 9:34 pm
by MCurto
Not very experienced either at modelling or with LuxCore, but I do know what to look for: background as Photoshop retoutcher/post-production and have good knowledge of anything photo related. Started playing with Blender during first confinement, initially to complement real work with a few bits such as backgrounds and small stuff.Most of the things I work in my day job are product shots and the ones I like most usually revolve around bottles and liquids, so it was only natural to start experimenting in 3D with those.Started using Lux because at the time it was the only free alternative to get GPU acceleration on Mac but stayed because of volume priorities and caustics.

Will post here future experiments, none of this is work, just having fun trying to learn new stuff: LUX,FlipFluids,EXR workflows,etc...
Pedras_01.jpg
Had to mix 3 renders actually: Spot would give overkill caustics, probably my fault to set it up properly+too choppy water, and area light was very subdued:
Screenshot 2021-10-25 at 22.22.33.jpg
EDIT:forgot to add this could also be a good example how Volume priorities can make life so simple, on the far right image one can see how FLIP Fluids interacts with obstacle (bottle), that would render a mess with the intersections with glass and would probably be a pain in the back to apply a Bolean in liquid.Flip has a very handy option to solve interactions inside the obstacle, so its just a matter of using that and give a higher Volume Priority to glass.

Any criticism or suggestions are most welcome.

Re: Playing with liquids+bottles

Posted: Mon Nov 29, 2021 3:46 pm
by MCurto
Underwater was getting frustrating, so decided to do something easier only to get frustated with FLIP Fluids, all I could savage from that mess, not exactly what I was looking for:

Re: Playing with liquids+bottles

Posted: Mon Nov 29, 2021 5:21 pm
by zeealpal
The glass looks great IMO, pity about the fluids as it's an otherwise great shot!

Re: Playing with liquids+bottles

Posted: Mon Nov 29, 2021 5:34 pm
by TAO
Nice job, a little bit more detail with water should be great.

Re: Playing with liquids+bottles

Posted: Sun Dec 19, 2021 12:42 am
by MCurto
Lux250_test copy.jpg
Unfortunately couldn't render the version with smoke because of memory problems, I've been told in Discord the problem is probably due to the fact MacOS OCL driver running in 32 bits. Been trying Lux in Linux but so far the latest 2 Ubuntu versions seem very buggy on AMD drivers and couldn't manage to install CentOS 8, trying Fedora 35 ATM.If I manage will update it.

Re: Playing with liquids+bottles

Posted: Sun Dec 19, 2021 2:21 pm
by Luximage
Very nice image, congrats.

Re: Playing with liquids+bottles

Posted: Mon Dec 27, 2021 4:08 pm
by jhon
:D I had the privilege of seeing the development of these works from these super realistic bottles made by this super talented artist. you can sell these images are very good

Re: Playing with liquids+bottles

Posted: Mon Dec 27, 2021 4:09 pm
by jhon
I will also get to show how luxcore has changed my professional rendering life and saved me from every complicated luxcore job delivery and life.

Re: Playing with liquids+bottles

Posted: Sat Jan 01, 2022 6:02 pm
by MCurto
lux_smoke_400.jpg
Still not entirely happy with results, but this is a stopgap to the final image (with some mirror reflections)

Served to learn a lot and sort a few things: volume auto-step settings (for smoke) was really slowing down the render to a ridiculous point, maybe because I had my scene done 1:1 in mm's and I believe the auto-step was probably getting confused as in Lux wiki it says the settings are suposed to be in meters but don't think there's a way to check what settings Auto is using (is there?) once I set it to manual it increased speed by around 10x.I do have to play more with it as the final render got a bit too blocky for my taste.

Also, still need to change Bump material for bottle for real displacement, but it's much harder to control it.

A few things I picked up along the way: Rendering in Fedora linux is much,much more stable.I like to start with bigger resolutions for editing before scaling down 50% for final image/previews.I just couldn't render in Mac and a few people in windows I passed the file crashed their computers.In Linux it seems to handle over VRAM nicely, same file would crash 8GB GPUs in windows/mac:
Screenshot_from_2021-12-30_20-59-07.jpg