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[Nvidia] NVIDIA Launches PhysX 3.0 With Support For Emerging Gaming Platforms - Page 8

post #71 of 145
Quote:
Originally Posted by ErOR View Post
Doesn't GTA IV use Havok engine for physics?

GTA IV has the best physics I've ever seen in a game on such a huge scale, plus the driving is more realistic then NFS will ever be (that's after the stock handling has been modded a bit). The weight transition and traction is excellent and rain acts as it should. I don't know if this is because of Havok but it's damn good.

Only games where I found PhysX to add to the game was Batman and in Crazy Machines 2.
It actually uses the Bullet Physics Engine.

Considered by many to be future of game physics (on both PC and Consoles).
post #72 of 145
I dont care for physics effects. Give me ray tracing.
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post #73 of 145
Quote:
Originally Posted by anotheralex View Post
SPH fluid simulation, I heard of that game I heard it was amazing!!
Cryostasis uses it, as does Crazy Machines 2 and probably Alice: Madness Returns. If you don't like the term then just call it volumetric fluids (as opposed to simple surface animation like on an ocean).
post #74 of 145
PhysX on my phone. wow.
post #75 of 145
Quote:
Originally Posted by lordikon View Post
AMD is pushing for Bullet Physics using OpenGL last I heard. ATi was working with Havok until Havok was purchased by Intel.



Pretty much.

Games using PhysX (looks like about 20-25):
http://en.wikipedia.org/wiki/PhysX#PhysX_in_video_games

Games using Havok (looks like about 220-240):
http://www.havok.com/index.php?page=available-games

Also, I've programmed games/engines with both, and Havok is far better IMO.
Sorry dude but you're pretty much wrong on every count. You're comparing apples to oranges. You've compared the number of titles that use ***GPU*** PhysX to the number of titles that use ***CPU*** Havok. But PhysX supports CPU physics too. In fact it offers more functionality than Havok. Also, the CPU PhysX path is how most developers use it... most do not support using hardware acceleration (GPU PhysX), as you'll see there are only 26 titles listed on the site that do.

Look:

http://physxinfo.com/

There are 327 titles that use CPU PhysX... more than Havok. So your stats are way off from reality.

I strongly suspect you haven't used any such physics APIs if you're not even clear on the difference between CPU and GPU PhysX, and as such are probably not a credible source on the matter.

It seems a lot on this message board are reciting some catch phrases they've heard without having any clue what they're talking about. Please read up on this stuff or ask questions of those who know more than you before you pass judgement and misinform others.
post #76 of 145
Quote:
Originally Posted by Killam0n View Post
haha I will keep buying ATI GPU's and still not care, woooo cuda... go overpriced hardware go!

but can the VRM's handle it? BTW xbox360 has ATI/AMD hardware in it, so they just proved that it fully could work on ATI/MD hardware.
Overpriced by what standard? The market dictates the price it is willing to pay. If they are not selling any, then they can't continue charging that price, so they are forced to drop it. If they don't drop it, well then I guess it's selling, and not overpriced eh?

Basic market economy principles FTW.

It's especially funny that someone would use the term "overpriced" to describe hardware that depreciates as fast as GPUs do inside of 1 or 2 years. How is it overpriced if within a few months it's worth half as much? Just wait the few months then if it's such a problem, and be well behind the curve of the latest technology. No one's going to stop you
post #77 of 145
Quote:
Originally Posted by Seven7h View Post
Sorry dude but you're pretty much wrong on every count. You're comparing apples to oranges. You've compared the number of titles that use ***GPU*** PhysX to the number of titles that use ***CPU*** Havok. But PhysX supports CPU physics too. In fact it offers more functionality than Havok. Also, the CPU PhysX path is how most developers use it... most do not support using hardware acceleration (GPU PhysX), as you'll see there are only 26 titles listed on the site that do.

Look:

http://physxinfo.com/

There are 327 titles that use CPU PhysX... more than Havok. So your stats are way off from reality.

I strongly suspect you haven't used any such physics APIs if you're not even clear on the difference between CPU and GPU PhysX, and as such are probably not a credible source on the matter.

It seems a lot on this message board are reciting some catch phrases they've heard without having any clue what they're talking about. Please read up on this stuff or ask questions of those who know more than you before you pass judgement and misinform others.
Interesting first post, gotta say its bold and I'm not sure weather it's too rude or not.
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post #78 of 145
Quote:
Originally Posted by Seven7h View Post

I strongly suspect you haven't used any such physics APIs if you're not even clear on the difference between CPU and GPU PhysX, and as such are probably not a credible source on the matter.
Doesn't sound like you do either. PhysX uses a horrifically inefficent instruction set that is near garbage for today's standards. It should be native SSE, which will offer at least twice the performance.

I doubt they would put much empathizes in it though. They'll notice that the CPU would outperform their GPUs in the same physics tests.
Edited by Domino - 6/30/11 at 3:38am
post #79 of 145
Quote:
Originally Posted by Seven7h View Post
Overpriced by what standard? The market dictates the price it is willing to pay. If they are not selling any, then they can't continue charging that price, so they are forced to drop it. If they don't drop it, well then I guess it's selling, and not overpriced eh?

Basic market economy principles FTW.
More like FTL, you just explained supply and demand but either way
It's still overpriced. Just because people want it more, doesn't make it better value for money.

Quote:
Originally Posted by Seven7h View Post
It's especially funny that someone would use the term "overpriced" to describe hardware that depreciates as fast as GPUs do inside of 1 or 2 years. How is it overpriced if within a few months it's worth half as much? Just wait the few months then if it's such a problem, and be well behind the curve of the latest technology. No one's going to stop you
GTX580 new has maintained its price rather well. Actually the ATi 5970 has maintained its price very nicely. Heck look at the ASUS MARS 285 or ASUS ARES. THAT has kept its price well!
Second hand is a different story all together.
My GPU is roughly 1.5 Years old, not too bad performance-wise actually. And the 5970 is even better, and they're both more than "months" old.
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post #80 of 145
This is how I see it.

Physx can do wonders for fluid simulation.
Not needed for cloth, since that can be baked. (how many things collide realistically with your cloths? How many random cloths are hanging around irl ready to be torn?) Why is cloth even in games, other then the random dress or cloak?
Destructable physics in general can so easily be optimised to run on the cpu, in realtime, as long as the brakepoints are prebaked. Forcing this onto the gpu is stupid.
Perhaps gpu physics is needed for softbodies, but that can also be optimised to run relativly well on the cpu, usually by disabling self-collision detection.

Gpu can be used to accelorate these affects by taking a load off the cpu, but the cpu can also just run all of them fine at playable framerate.


gpu physics has its place, but it irritates me when simple effects are locked to it.

This being said, I also have high hopes for Bullet, but they arn't as active as nvidea in showcasing stuff, focusing mainly on tech for movies, and 3d modeling apps, I feel they should dedicate a team to creating game demos to promote what can be achieved on the cpu.
Edited by .:hybrid:. - 6/30/11 at 4:34am
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