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View Full Version : Physics chip in action..



Bearcat99
05-26-2005, 08:28 PM
You have to check this out.... Hit the FTP links ansd check this out.

http://www.fz.se/filarkiv/?file=mov/physx/DivxPhysxAirtight720x400.avi

Bearcat99
05-26-2005, 08:28 PM
You have to check this out.... Hit the FTP links ansd check this out.

http://www.fz.se/filarkiv/?file=mov/physx/DivxPhysxAirtight720x400.avi

tsisqua
05-26-2005, 08:46 PM
<span class="ev_code_RED">I'm agape!</span> http://forums.ubi.com/images/smilies/blink.gif

Jeez, Berry! What I am wondering about is: Since the demo was obviously created using software developed with this PPU in mind, will it support existing software in the sense that it could improve CPU usage . . . by taking over the physics calculations? In other words, will it be of any use to us who do pretty much nothing else, gamewise, but fly IL2?

OMG, just think of that kind of physics in IL2!

Thanks Bearcat http://forums.ubi.com/images/smilies/25.gifhttp://forums.ubi.com/images/smilies/25.gif

Tsisqua

Bearcat99
05-26-2005, 10:01 PM
Sometyhing like that could take gaming to another level.. then of course if you toss in that 3D thing Toshiba is working on... I can see it now.... 3D virtual sims.. where the cockpit is all around you.

fordfan25
05-26-2005, 11:00 PM
just one more componet to have to spend mony on to play games lol

GAU-8
05-27-2005, 12:07 AM
what codec? wont play for me

DarkBlueMan
05-27-2005, 01:17 AM
WOW! With talk of the new FM in patch 4 being more CPU intensive, something like this could turbo charge flight sims!
The part of the video with the aircraft crashing in the hangar shows how something like this could relieve the load on the CPU. The CPU could be getting on with other things while this device calculates all the physics of objects interacting with each other.
Very impressive...

Capt.LoneRanger
05-27-2005, 03:20 AM
Hm, sorry, not impressed here.

Check out the UnrealEngine 3.0 - Physics demo and see this happen in realtime on your computer and without the chip. Maybe not with the graphical detail, but we know from UT, that both will come together in the game. You can simulate 1000+ objects at the same time falling, tossing and tumbling.

Same ist for the older UT-Physics demo (The billard-room) and the HL2-physics demo.

And let's not forget, this video shows predefined breaking edges, still.

The only reasonable demo would be a video with hardware config and FPS stated against with and without the chip and maybe especially for another engine but their own.
UT2007 will support the chip, as some other games will. It would be a lot more interesting to see what happens then. At least the weight and innertia, the stability and stuff doesn't look convincing to me. Just look how the giant bomb simply snaps back, when touching the thin hand-rails. http://forums.ubi.com/images/smilies/blink.gif

DarkBlueMan
05-27-2005, 05:34 AM
Sure enough HL,UT and even Max Payne 2 can show this sort of stuff happening realtime. A game/sim of FB/PF's nature is a different kettle of fish though I reckon.

I get great performance out of FPS games like HL, UT, MP2 on my system but FB/PF does have some slowdown when things get busy (aircraft crashing into carriers etc). With all the calculations needed for DM/FM I think todays CPU's are at breaking point as far as FB/PF is concerned. Games like HL can dedicate CPU time to these calculations but I don't think FB can. It has enough on it's plate already.

Something to ease the strain and perhaps calculate all the trajectories involved with exploding aircraft on carriers (for example) has got to be good.

I hope.

Alexi_Alx_Anova
05-27-2005, 05:55 AM
The first PPU claims to be able to model 40,000 objects. i.e., 40,000 times the detail you just quoted for UT.

As said above, flight sims take up much more of the CPU than FPSs. You're comparing apples and oranges.

Capt.LoneRanger
05-27-2005, 06:09 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> You're comparing apples and oranges. </div></BLOCKQUOTE>

Agreed a 100% with you, Alexi_Alx_Anova, but not I am comparing apples and oranges. Taking a video from a FPS to show how it will handle a flight sim is. This demo is a FPS-related demo, not a flight-sim. So how can anybody look at it and state how much better it will handle complex flight-simulation!? http://forums.ubi.com/images/smilies/blink.gif

All we can do is compare it to what it shows. And that is, no matter what you see in it, an Ego-Shooter. So this demo very well has to stand itself against other FPS-physics-demos.

Bearcat99
05-27-2005, 12:13 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Capt.LoneRanger:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content"> You're comparing apples and oranges. </div></BLOCKQUOTE>

Agreed a 100% with you, Alexi_Alx_Anova, but not I am comparing apples and oranges. Taking a video from a FPS to show how it will handle a flight sim is. This demo is a FPS-related demo, not a flight-sim. So how can anybody look at it and state how much better it will handle complex flight-simulation!? http://forums.ubi.com/images/smilies/blink.gif

All we can do is compare it to what it shows. And that is, no matter what you see in it, an Ego-Shooter. So this demo very well has to stand itself against other FPS-physics-demos. </div></BLOCKQUOTE>

Look closely at the level of movement in the debris. I can see from thjis video that in the hands of a competent game developer like OM & 1c this could be the answer to thier and our dreams. Oleg always said that this sim was programmed with the limitations of current technology in mind... well this processor just extends those limits substantially. To think 1C wouldnt be trying to take that into consideration right now is a mistake. It wouldnt surprise me in the least if 1C hadnt already slowed thier roll and stepped back a few paces to reassess thier options. For all we know this new FM could be what they were going to use for BoB... before the PPU technology became apparent. I have no doubt that as long as 1C is making si http://forums.ubi.com/images/smilies/25.gif http://forums.ubi.com/images/smilies/16x16_smiley-very-happy.gifms they will be good and they will be on my HD...

Capt.LoneRanger
05-27-2005, 01:21 PM
Absolutely, Bearcat99!

I think this is a great opportunity, especially for flight sims.

But my point is, how can you see how realistic a sim can be by judging it from a self-programmed 3D-FPS-movie without any system specs, # of triangles, light sources, etc.
If you look at other demos, it even isn't very impressing how weights and dynamics are handled.

Since UT3 engine supports this chip, why is there no comparrision for it's physics demo with and without the chip!? That would very much more convince me than any movie in the world.

Check out this tech-demo:

http://www.novodex.com/rocket/NovodexRocket_V1_1.exe

lbhskier37
05-27-2005, 02:43 PM
From what I have read, this physics chips is basically for particle physics. While it could make for some neat effects in the damage of buildings, I don't really see this implimentation helping flight sims. I highly doubt this chip will do fluid dynamics calculations, as they would have no use in FPSs, and that seems to be the target market of this chip. It is possible someone in the future could come up with a fluid dynamics chip, but with the limited market of flight sims, I don't really see that happening.

marcocomparato
05-27-2005, 04:48 PM
Something to understand is that currently alot of this is performed in what the Pentium and Athlon call 'extensions' like SSE2 or 3Dnow. these are basically hardwired math routines that physics or multimedia can be thrown at for much more optimal returns in terms of speed.

offsetting this to another chip has its limitations as well. the numbers now have to travel across the PCI bus which can be much like a stop light on a busy city street. (this is what hypertransport addresses)

Capt.LoneRanger
05-27-2005, 06:17 PM
Hm, well, partially. Taking your example HyperTransport equals the use of a traffic circle instead of traffic lights. Of course the overall throughput is largely improved, it still has to overcome the same limitation that renders PCI-Express nearly useless right now: All the information has to pass through the CPU (and memory). http://forums.ubi.com/images/smilies/10.gif

That's why I'd so much like to see it really benchmarked against a conventional rig.

OldMan____
05-27-2005, 07:50 PM
The movie itself is not that impressive. You can do same thing in software if you consier that everyone has a Atlhon 64 3700+ just to make physics calculations.

Even so, current demonstration on this chip are NOT at its full capacity. Until know they are having some drivers issues that are theoreticaly limiting them to less than 50% theyr true firepower.



My bet is that or we will have cell PCI-E boards soon too, or NVIDIA and ATI are going to integrate such features on their chips (they lready do 90% of the stuff that ageias chip does)