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First Look: Unreal Tournament 3 With PhysX

Tute said:
I actually don't think those physics in that video are that great - most notably the "destructable terrain" parts.

I mean, when the guy shoots the wall, instead of blowing a hole in it, the bricks just appear to fall over. Doesn't look close to "realistic" IMO.

i agree 100% on that
 
Very nice, but how much overhead will be put on the system to aply the effects, the whirlwinds look like they will kill everthing inc frame rate.
 
Very nice, but I've always wondered about these game physics...

Here's one for Pottsey,

Whats the difference between Ageia and Havok? I'm not talking about hardware here, rather what level of physics they offer? Everyone always seems to get caught in the PPU part but never explain what software its driving?

You said Havok is effect only? but in HL2 things float/sink in water?

I guess its similar to OpenGL and DirectX in the graphics department? am I off base?

So in the future any self respecting game developer will have to choose one or the other? and hardware support will come from either CPU/GPU or dedicated PPUs, which could support both PhysX and Havok FX?


Ta
________
YAMAHA PHAZER SPECIFICATIONS
 
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“stupid question, what is suppose to be there that is special :s“
Instead of using 100% of one core or 2 cores you using 0% CPU power. That’s assuming 1 complete core could even do that much wind. Never seen it done before on a CPU.

It might not be special to you but to me going from 100% core usage down 0% is pretty good. That 100% CPU core can go and do other stuff.

The wind and tornado are special as it sucks objects into the vortex. Unlike other games with the CPU being scripted or don’t have wind effecting objects near by.





“hasn't already been showed running on a standard CPU in Crysis.”
Never seen any of the wind effects in Crysis before. Got any videos?






the excessive clipping of all the stones and debri through the wall put me right off.
The video is from the alpha it’s not even in beta yet. It’s along way from being finished. Hopefully that’s just a bug that will get fixed. With it still being Alpha bugs like that are to be expected.

As is Alpha don’t you think some of you are being a little harsh about bugs? This is meant to be a sneak peak at what’s being worked on not a video of a finial product. Now if its like this in the final product I will agree the clipping is excessive.





“Very nice, but how much overhead will be put on the system to aply the effects,”
None or very little with the PPU. That’s the idea of the PPU the overhead the CPU would have to do is moved over to the PPU.
 
Pottsey said:
the excessive clipping of all the stones and debri through the wall put me right off.
The video is from the alpha it’s not even in beta yet. It’s along way from being finished. Hopefully that’s just a bug that will get fixed. With it still being Alpha bugs like that are to be expected.

As is Alpha don’t you think some of you are being a little harsh about bugs? This is meant to be a sneak peak at what’s being worked on not a video of a finial product. Now if its like this in the final product I will agree the clipping is excessive.

Fine, glad to hear it. :)

I do think there is a lot of "polishing" needed though.
 
“i still think crysis PhysX are better and crysis dosnt use a ppu”
I hear that a lot but I have yet to see any of the hard to do physics in Crysis. I don’t see how it can be better when it only does the easy stuff. Graphically Crisis looks nice but physics wise it’s only got relatively easy to do effects none of the hard stuff.
 
Pottsey said:
“i still think crysis PhysX are better and crysis dosnt use a ppu”
I hear that a lot but I have yet to see any of the hard to do physics in Crysis. I don’t see how it can be better when it only does the easy stuff. Graphically Crisis looks nice but physics wise it’s only got relatively easy to do effects none of the hard stuff.


Have you seen the nuclear explosion video? There's your wind for you. And the destruction of the buildings looks a lot nicer then in the UE 3 video with the PPU.

I'm not saying the PPU is a bad thing to have. It's just not worth the pricetag and it's supposedly very hard to code for. If the results are only what's in that video then I don't think it will ever come to anything. Crysis physics does look better and I'm not even a major crysis fan. I am a fan of it's engine though ;)
 
“Have you seen the nuclear explosion video? There's your wind for you. And the destruction of the buildings looks a lot nicer then in the UE 3 video with the PPU.
I didn’t see that as wind. That was the nuke hitting the building and the building being told to explode outwards. Wind is very different. It remains to be seen if crisis can do wind. Lots of games do explosions like that. Well not as nice looking. Also how scripted was that one screen?

Not only that but the nuclear explosion video isn’t in game. It’s a test tech demo. A lot of tech demos like that don’t work ingame once you have everything else running. Think of Nvidia face tech demo. Sure you can do that when everything’s just on that one effect. But not in a full game.

Has it been said the nuke effects will be in the full game? Or is it one of the many effects that are only in tech demos when the rest of the game engine isnt working?







”I'm not saying the PPU is a bad thing to have. It's just not worth the pricetag and it's supposedly very hard to code for.”
That’s just stuff the anti PPU make up. It’s easy to code for. Just look at all the free demo’s people make with the SDK. Lots of home users play around with it.
 
oh and about the price off a ppu u can get a 8800 for 70pound more and have your games running fast with better detale
 
As far as I know the nuclear explosion wasn't scripted in any way. They were just messing around to see just how good their engine could be. There are still quite a lot of debris being realistically thrown about in the video and houses being wiped out with individual planks of wood and metal panels being blown around. Essentially it's the same as wind but instead of moving in a vortex like in the PPU video it's moving in a blast outwards from one point.

Obviously the benefit of the PPU is that it can do that without needing to use up a CPU core but with the power of cpus these days any dual core rig probably wouldn't have a problem as one core would handle the physics and the other would handle the game rendering. I can see smaller processes like sound being tossed from one core to the other depending on which is in most usage at the time.
 
“oh and about the price off a ppu u can get a 8800 for 70pound more and have your games running fast with better detale“
If you already have an 8800 you can spend £80 on a PPU and get your games running faster with better detail.

The PPU isn’t to replace other hardware’ its to run alongside it. If you have a weak GPU it makes no sense to buy a PPU instead of a new GPU. But if you already have a good GPU and want more speed and more effects a PPU is the way forward if the game supports it.






“They were just messing around to see just how good their engine could be.”
That’s what concerns me a lot of those mess arounds don’t work in real games. If its not going make it into a real game it doesn’t seem right to say crisis can do these affects a PPU is not needed. When it turns out Crisis cannot do those effects in a real game. Unless you heard different those nuke’s are not going be in Crisis the game.

If that Nuke is taking up 100% of system resource’s its not going be useable in game. The point of the PPU is those effects in tech demos that take up 100% of system resource’s are now useable in game with a PPU.






“dual core rig probably wouldn't have a problem as one core would handle the physics and the other would handle the game rendering.”
The PPU is 50x better at physics then 1 core doing physics. So if everyone had PPU’s even if it wasn’t Ageia and they all used the same API we would be much better off then now with much better physics.

I still think CPU’s are a poor long tearm choice for physics. Doing physics on the CPU is holding us back. It would be like going back in time and 3dcards didn’t take off but instead it was all done on the CPU.
 
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“Very nice, but how much overhead will be put on the system to aply the effects,”
None or very little with the PPU. That’s the idea of the PPU the overhead the CPU would have to do is moved over to the PPU.[/QUOTE]


Yes i know that was the idea but from what i've seen of the PhysX card in AWF when using PPU theres a big drop in FPS. If the unreal engine can use Ageia PPU with little to no overhead graet but i cant see how the CPU wont get draged in somhow.
 
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“PhysX card in AWF when using PPU theres a big drop in FPS.”
Only if you play the year old unpatched version with old drivers before the major performance bug was fixed.

GRAW 2 also runs much faster with the new drivers. There is no big drop anymore.
 
It sound like some of you have no idea what Alpha means in game development. The Alpha stage is early in development where things are not set in stone before the beta stage. Think of how many problems bad beta games have are only x10 worse that’s Alpha.

You try things out and see what works. You don’t spend ages on clipping and making things look perfect as settings are constantly being changed. There’s no point spending ages making an effect look great only to find out the way the effect is done is being changing tomorrow. Instead you experiment without fine turning.

The Alpha stage normally has lots of broken none working effects and stuff and very little will be fine turned or polished. Speed is normally unoptimised and slows. The fine turned and polished part happens in the beta stage which is after Alpha.
 
Well i'd like to think that a next gen game in alpha stages would look somewhat better than a game made in 2001 on the PS2. Why would they release footage of someone shooting a wall and it breaking off in very obvious segments on squares? Crysis in alpha owned this game.
 
Nymins said:
Man that brick wall breaking looked like crap. Red Faction 1 done better than that.

Thats the game i was trying to think of which it reminded me off :D , if this is the make or break for the PhysX, then im afraid its break imo, looked rubbish.
 
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