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[TPU] NVIDIA Announces PhysX and APEX Support for Sony PlayStation 4 - Page 7  

post #61 of 159
^ Most PhysX effects run on the GPU. Where the hell do you get that they run on the CPU from? CPU PhysX proform terribly.

And for the billionth time it's ENTIRELY possible to run PhysX on an ATI GPU. All you need are drivers that support the CUDA libraries. CUDA is NVidia only because AMD don't licence it and use it. There is nothing at all stopping the PS4 from licencing it and running GPU PhysX NOTHING.
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post #62 of 159
Quote:
Originally Posted by SlackerITGuy View Post

What I'd like to know is if PhysX will run on the PS4 shaders or on the CPU.

Both, probably. You've got 8 cores sitting there doing very little otherwise.
Quote:
Originally Posted by driftingforlife View Post

Interesting as it is all AMD spec.

PhysX has always worked on AMD, iirc not long after GPU PhysX first came out AMD cards had a version running...The only reason AMD doesn't pick it up is because then nVidia would market it like crazy and make it a standard, then screw over AMD cards in performance or features. (Ala DX10 vs DX10.1, nVidia paid off MS to reduce DX10s features so G80 could come out earlier.)
Quote:
Originally Posted by Nenkitsune View Post

the end result is physx for all.

We've already got one virtually universal proprietary API (DirectX) in PC gaming, please don't make another one a standard.

You can bet if it was a standard, nVidia would always make AMD wait a lot of time before new features came out on their cards. (ie. They'd launch some new physics featureset or performance improvement, make it so AMD has to make architecture changes and release it right before their new cards drop)
Quote:
Originally Posted by Nonehxc View Post

They don't care about PhysX since it's a gimmick

Physics calculations in games aren't a gimmick..well, they are now but they won't be once we have proper standards that every gamer can run perfectly on any hardware, console or PC. Minecraft has shown developers that gamers love being able to completely alter their worlds and that its possible for some varieties of games without making it boring as heck. Imagine GTA V where you can fly a plane into a building, it falls apart, etc and over a week of real life time you can see the broken shell being cleaned up and then a new house being rebuilt in the same plot. This is the future of gaming.
Quote:
Originally Posted by mushroomboy View Post

While it runs on a CPU, it runs like crap (comparatively).

That's because nVidia only recently started using instruction sets introduced in 2001 (SSE2) instead of the previous 1997 (MMX) and 1999 (SSE) ones, and due to the code being run on those typically being ancient programs, current CPUs do not run that code fast compared to SSE2, SSE3, etc code. As for porting...Once they have the basic x86 code it isn't that difficult to make use of newer instruction sets, and multi-threading? They had to multi-thread the code to get it to run well on a GPU anyway. Physics calculations are ridiculously easy to multi-thread since the only time the threads need to even be aware of other threads is when objects interact.
Quote:
Originally Posted by Nemesis158 View Post

For all we know, The Ageia Physx Chip may have been a re-branded Graphics Processor with no built-in display output, used just for Processing.

It was MIPS based, like the PS1.
Quote:
Originally Posted by Rubers View Post

Not really.

NVidia offered AMD a licence for it and AMD refused. It was reported to be "pennies per card" with AMD holding their nose in the air and saying they wanted to use open standards (citing Bullet Time and OpenCL, then proceeded to do nothing with either tech for 5 years).

NVidia do not code it specifically to refuse AMD cards, but AMD drivers are not at all coded to use CUDA because AMD didn't want to use CUDA. However, NVidia do refuse to run Physx if an AMD card is present in the system, for whatever reason... but it's been a well known fact that AMD can run PhysX on their cards. They just don't want to.

This is like when people wish MS would put DX on Linux...Sure, it'd work (technically) but you can bet that as newer versions and features came out, artificial limitations that make the maker of the proprietary API look better than anyone else would also come out. Anyone who thinks AMD should have taken up PhysX/CUDA is really just too impatient...Sure, we'd have physics much more detailed in games now but you can bet that AMD wouldn't be in the position (In the GPU market) that they are now. It's all easy to say AMD screwed us by refusing, but much like with developers all bending over to MS and going DirectX it only screws us worse in the long run to only really support the proprietary API. Especially considering that both nVidia and AMD have been known to reduce graphical fidelity, etc through drivers in order to gain one up on the opposing team..You can bet that physx/CUDA would run better on nVidia's cards for a few months after each update.
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post #63 of 159
Quote:
Originally Posted by Rubers View Post

Batman AA and AC did a good job with it.

Yes, they did. They showed its potential. However, we've seen others, like some of the Hawken effects. They were blah, or pointless, especially in a fast paced game like that, where the effects only hindered vision.
Edited by Purger - 3/8/13 at 8:11am
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post #64 of 159
Quote:
Originally Posted by Purger View Post

It blows my mind that you actually think there is some special, magical little CUDA cores Physically on the card. They aren't, it's software driven.

Exactly my friend.

its just software.
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post #65 of 159
Games that use cpu physx ONLY:

http://physxinfo.com/index.php?p=gam&f=cpu



Games that make use of gpu physx:

http://physxinfo.com/

393 vs 21

Sure, gpu physx is the norm doh.gifdoh.gifdoh.gifdoh.gifdoh.gifdoh.gifdoh.gifdoh.gifdoh.gif
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post #66 of 159
^ doh.gif
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post #67 of 159
Quote:
Originally Posted by prava View Post

Games that use cpu physx ONLY:

http://physxinfo.com/index.php?p=gam&f=cpu



Games that make use of gpu physx:

http://physxinfo.com/

393 vs 21

Sure, gpu physx is the norm doh.gifdoh.gifdoh.gifdoh.gifdoh.gifdoh.gifdoh.gifdoh.gifdoh.gif

ALL of those CPU PhysX titles use it very lightly, as I already said.

PS4 is going to support APEX PhysX, which was in Batman AC and AA. Therefore, PhysX in the PS4 is likely to run on the GPU, not CPU.
Edited by Rubers - 3/8/13 at 9:18am
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post #68 of 159
Quote:
Originally Posted by Rubers View Post

ALL of those CPU PhysX titles use it very lightly, as I already said.

Do they use Physx yes or no?

PS: and not lightly, not at all, since Physx is a physics api, and thus it handles A TON of things. The "light" things are the gimmicks that have no effect on gameplay, but only on visuals.
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post #69 of 159
Quote:
Originally Posted by prava View Post

Do they use Physx yes or no?

PS: and not lightly, not at all, since Physx is a physics api, and thus it handles A TON of things. The "light" things are the gimmicks that have no effect on gameplay, but only on visuals.

The most recent title in that list was Dishonored, and yeah, it was a VERY light implmentation of PhysX.

NONE of the games on your CPU list use the GPU effects, they all use the effects that are available to the CPU and they all use it lightly because any heavy use strains performance.
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post #70 of 159
Quote:
Originally Posted by prava View Post

Do they use Physx yes or no?

PS: and not lightly, not at all, since Physx is a physics api, and thus it handles A TON of things. The "light" things are the gimmicks that have no effect on gameplay, but only on visuals.

The light things are dust and water in Batman that are enabled with physx lachen.gif
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