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"Position Based Fluids" Could Command Next Gen Water Effects

Dear techies and computer graphics fiends, your water may have just gotten better.

SIGGRAPH is an international conference on computer graphics and interactive techniques held in Anaheim, California. In July this year the conference will permit computer graphics and simulation professionals Miles Macklin and Matthias Müller to present their paper entitled Position Based Fluids, according to Macklin's blog. The paper explains the techniques used to overcome a particular difficulty with overuse of processing power when creating realistic, complex water effects.

From their abstract:

"In fluid simulation, enforcing incompressibility is crucial for realism; it is also computationally expensive. Recent work has improved efficiency, but still requires time-steps that are impractical for real-time applications. In this work we present an iterative density solver integrated into the Position Based Dynamics framework (PBD)."

Make sense to you? Yeah me either, but I know we have some programmers here at PSXE that might have a clue and could be interested in the full paper here. Thankfully for the rest of us, Macklin has provided two visual aids so you can judge for yourselves.

 

It is worth noting the work you've just seen is being done on a single Nvidia GeForce 680GTX graphics card. PS4 won't be using Nvidia, but that isn't an issue since the power in their AMD hardware ought to be comparable. This presentation could well be a glimpse of the more impressive processing techniques used in the next generation of games.

Does that lighthouse make anybody else think about what water could accomplish in a little place called Rapture?

Tags: PS4

4/25/2013 7:25:56 PM David Nelson

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Comments (18 posts)

Qwarktast1c
Thursday, April 25, 2013 @ 8:57:15 PM
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lol Ben i was thinking the exact same thing about the rapture lighthouse

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Qwarktast1c
Thursday, April 25, 2013 @ 10:29:36 PM

correction, David. lol i'm still not used to seeing other contributors writing articles on this site

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WorldEndsWithMe
Thursday, April 25, 2013 @ 11:31:47 PM

No problem, we're one big happy family :)

Last edited by WorldEndsWithMe on 4/25/2013 11:32:03 PM

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Temjin001
Thursday, April 25, 2013 @ 10:31:19 PM
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Cool. Hopefully we see an approximation of this next-gen. Unfortunately the PS4 graphics element is considerably less powerful than the 680gtx. Not to say it couldn't be done, but just that the demo is powered by more capable hardware.

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daus26
Friday, April 26, 2013 @ 12:27:49 AM

I wouldn't say considerably less... if the R10xx is indeed close to the performance of a Radeon 7970 or 7990, plus pairing it with the integrated gpu in the cpu, and also the 8GB (vs typical 2GB in PCs), it should be more than capable than a lone 680GTX.

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Crabba
Sunday, April 28, 2013 @ 3:10:57 PM

daus26 well the specs released by Sony is nowhere near the performance of a Radeon 7970, that's the problem. In fact the GPU of the PS4 is not even close to the performance of a 7870, a much cheaper GPU...

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Alejandro562
Friday, April 26, 2013 @ 12:25:39 AM
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I do hope this type of tech makes it into next gen, deep down imo is the most futuristic looking title.

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daus26
Friday, April 26, 2013 @ 12:28:13 AM

Seriously, deep down was the best looking imo.

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Nas Is Like
Friday, April 26, 2013 @ 12:43:58 AM
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That was pretty cool. Let's hope this technology makes it for the PS4. Would love to see more realistic environments in the future, this has always been a pet peeve of mine, so to speak.

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Yukian
Friday, April 26, 2013 @ 1:00:11 AM
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I see a wet monster and a wet bunny. I demand that they make one with a cat. You must have a wet cat, always.

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sawao_yamanaka
Friday, April 26, 2013 @ 1:44:00 AM

Kitty got wet?

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Alejandro562
Friday, April 26, 2013 @ 1:08:53 AM
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The way the glass cracks exactly at the points is awesome 4next gen

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BTNwarrior
Friday, April 26, 2013 @ 2:25:47 AM
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light house actually reminded me of dishonored

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___________
Friday, April 26, 2013 @ 7:59:26 AM
Reply

pretty cool.
so exciting to see the advances were seeing in physics engines.
particle and lighting effects especially have advanced so much over the past few months, hell killzone shadow fall is actually using a very basic version of ray tracing!
the holy grail, something ive been looking forward to for a long, long time!
then you have the soft body physics demos been shown off recently, hopefully this will enhance and really improve the much needed damage systems in todays racers.
some are pretty good, but these demos are just down right breathtaking!

i was really worried developers were just going to put the extra power into shinier objects.
glad there not, very happy to see everything is getting a serious much needed push forward!
physics engines have really been stagnant over the past few years, they really needed a boot up the a$$ and they have finally received one!
next stop AI!!!!
O, and sound effects, its depressing how crap games sound compared to movies these days!

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Clamedeus
Friday, April 26, 2013 @ 1:28:10 PM
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Very cool. :) Looks really good.

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PC_Max
Friday, April 26, 2013 @ 2:04:53 PM
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Its good, but I remember seeing something like this about 5 years ago... minus the lighthouse. Its was cool then, but it never appeared or implemented.

I think my feeling now is still the same then. Looks nice, but is it actually going to implemented in the game and at what scale. Other than that it certainly would add to environment immersion as well as atmosphere overall depending how and what level it appears.

All the wonderful physics and particle simulations aside, I hope there is a damned decent good story for it to accompany. Pretty does not sell it for me, but it only helps the story and gameplay.

Yep, this was something what many expected to see in Bioshock... the water physics, but it did not materialize. Would be interesting to revisit the games and introduce this now, purely out of curiosity to see how much it would add to the game.

Keep Playing!

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Tim Speed24
Friday, April 26, 2013 @ 6:22:33 PM
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Water effects look amazing so far by Nvidia, I hope your right David, that the AMD graphics set will be comparable.

I would like to see that "next-gen" leap in the game visuals and AI after spending my money on new hardware.

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Crabba
Sunday, April 28, 2013 @ 3:15:15 PM
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Very impressive tech demo, definitely the best water effects I've seen so far! Of course that's done on a GPU much more powerful than the one in the PS4...

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