Physics Working On HD 4890?

[Marios]

Unless a game or benchmark explicitly supports opencl there is no way to use either CPU or GPU physics of any kind.
It is not possible to run Nvidia physx with opencl runtimes (CPU or GPU), without cuda support and physx drivers.

[wiak]

do we really want physix around though? :/ good dev tools or not, wide spread usage or not... i cant say physix has really advanced phycics effects in games... the effects look about the same as havoc and other stuff, or worse, and they tend to cripple fps... even on nvidia highend cards... :/

righty so

[Angry]

....Mirrors Edge was worth every bit of the FPS hit for physics. Hell if your like me and play at 720p (bc thats all ur TV supports besides 1080i). Then your pretty much in the clear for a plenty high FPS with physics enabled. Any higher(which alot of people seem to game at MUCH higher resolutions now-a-days) and your probably going to suffer unless you have a dedicated physics card.

[Clunk]

Regarding the CPU usage, it seems to drop when the steam/smoke comes into the frame. It's a bit of a difficult one to measure, but until we can find a better way, here's a camcorder shot (scroll to the bottom). If you skip to around the 2:00 mark, you'll see the steam/smoke come into shot and one of the CPU cores drop from 91% to 18%.

He's done some Fraps movies too and will get them up later tonight hopefully

Edit: Re-testing, will add new link later.

[STaRGaZeR]

Unless a game or benchmark explicitly supports opencl there is no way to use either CPU or GPU physics of any kind.
It is not possible to run Nvidia physx with opencl runtimes (CPU or GPU), without cuda support and physx drivers.

Exactly. Batman does not use OpenCL. I smell BS and a bad interpretation of the results.

On a side note, that article is full of fail. The autor doesn't know what he's talking about.

Yes, I think that ATI's beta OpenCL and Stream SDK V2.0 driver releases this week definitely do utilise physics drivers

"Physics drivers"

[Boogerlad]

ati opencl drivers are broken/sucky when compared to nvidia's. I love ati, but I can't believe the driver support is this crappy. It throws a bunch of errors on dolphin, but on nvidia, it works fine.

[zanzabar]

i dont think that physX is on openCL and there is a patch to make batman AA have the physX work in multi core isntead of the 1 so on a quad it runs fine, my system gets about 60-65fps. its not quite as good as gpu only physX but its close

ati opencl drivers are broken/sucky when compared to nvidia's. I love ati, but I can't believe the driver support is this crappy. It throws a bunch of errors on dolphin, but on nvidia, it works fine.

dolphin is coded on NV cards and NV uses proprietary commands and a proprietary compiler

[STaRGaZeR]

Dolphin is not coded for NV cards. In their OpenCL implementation they use standard API calls. Nothing propietary.

[RaZz!]

YES I DO!
I played just 2 games with Physix: Mirror's Edge & Batman Arcanum Asylum, and it was a great experience. Now after finishing those two games, I can admit that i couldn't play these two games again without Physix active. For me, Physix changed the entire feeling of the game.

Well i dont care if its called Physix, or Havoc-Physix, I just want this thing implemented in all games, and also ATI cards to run it and everybody to be happy and shake hands.

Batman Arcanum Asylium Physix Benchmark

@the batman:aa video:
the sad thing is that these phsyics effects were possible before as well (even though a few effects are more realistic with physx, e.g. smoke).
i don't blame nvidia for using physx effects. what i dislike is that if physx is turned off, you don't have any physics at all... just look at the smoke or the banners. these things could be done more statically without physx as well, especially the fog! the scene in batman:aa in the pcgh video shows this behavior pretty good. instead of using static fog when physx is disabled they totally destroy the atmosphere by not including any fog at all. and this is what really pi**es me off. static fog is around since 1999 or smth and yet they castrate the game and force you to use a nvidia gpu to see fog - else you just see a clean and empty room. bah

[zanzabar]

Dolphin is not coded for NV cards. In their OpenCL implementation they use standard API calls. Nothing propietary.

i thought that they used the NV compiler, and last time i checked the devs on dolphin use NV cards and had some proprietary ogl commands in older builds. were do u get the oCL plug in

[Boogerlad]

the ogl plugin is compiled as standard. The nv compiler thing is old and they fixed it in the first couple hundred revisions. They're on svn 4434 now. There are separate builds of opencl for ati and nvidia, but the standard builds work on all cards. http://cid-ec92aae47a89073b.skydrive...n?view=details

[Jowy Atreides]

....Mirrors Edge was worth every bit of the FPS hit for physics. Hell if your like me and play at 720p (bc thats all ur TV supports besides 1080i). Then your pretty much in the clear for a plenty high FPS with physics enabled. Any higher(which alot of people seem to game at MUCH higher resolutions now-a-days) and your probably going to suffer unless you have a dedicated physics card.

You'd take such an fps hit JUST for some broken glass and flappy plastic doors?

That's ed up.

By the way, games can do both EASILY without physx. MARKETING PLOY.

[Angry]

Just saying I really enjoyed mirrors edge.... 9800gx2 for video and an 8600gts for physx.
And at only 720p it was smooth as glass gameplay all the way through, even with on an Opteron 165 @ 3ghz...

Hell after I played ME and assaisns creed, I later sold the system out because I didn't use it anymore...

Though I'm now building and am2 rig for this winter to game on...assasns creed 2 here I come!

[zanzabar]

AC2 was delayed until march for the PC

[STaRGaZeR]

i thought that they used the NV compiler, and last time i checked the devs on dolphin use NV cards and had some proprietary ogl commands in older builds. were do u get the oCL plug in

Some Dolphin devs use ATI, some NV. Everything runs on both, no propietary commands.

OCL is not a plugin. And I confirm their implementation doesn't work on ATI cards with the OCL drivers. Reading the errors, it seems it's the developers' fault.

[Boogerlad]

+1 nicely said stargazer. OCL is an extension to the graphic plugins for texture conversion. Nice fps speedup on nvidia cards, and ati cards get vector scalar issues.

[STaRGaZeR]

Exactly, let's see if those errors can be sorted out by the devs.

[Chumbucket843]

You'd take such an fps hit JUST for some broken glass and flappy plastic doors?

That's ed up.

By the way, games can do both EASILY without physx. MARKETING PLOY.

hmm. i run the game with jacked up texture filtering and physx and still get 60fps all on a single gpu. way to be dead wrong.

[Xoulz]

@the batman:aa video:
the sad thing is that these phsyics effects were possible before as well (even though a few effects are more realistic with physx, e.g. smoke).
i don't blame nvidia for using physx effects. what i dislike is that if physx is turned off, you don't have any physics at all... just look at the smoke or the banners. these things could be done more statically without physx as well, especially the fog! the scene in batman:aa in the pcgh video shows this behavior pretty good. instead of using static fog when physx is disabled they totally destroy the atmosphere by not including any fog at all. and this is what really pi**es me off. static fog is around since 1999 or smth and yet they castrate the game and force you to use a nvidia gpu to see fog - else you just see a clean and empty room. bah

Exactly!

Banners waving in the wind can still be added and look realistic, it just that you can shoot bullets threw them. Batman A2, simple doesn't render anything, to over-illustrate the licensed Nvidia PhysX. It's a business deal, don't forget that.

[iTravis]

YES I DO!
I played just 2 games with Physix: Mirror's Edge & Batman Arcanum Asylum, and it was a great experience. Now after finishing those two games, I can admit that i couldn't play these two games again without Physix active. For me, Physix changed the entire feeling of the game.

Well i dont care if its called Physix, or Havoc-Physix, I just want this thing implemented in all games, and also ATI cards to run it and everybody to be happy and shake hands.

Batman Arcanum Asylium Physix Benchmark

The whole PhysX is overrated IMO as not many games out there really take its advantage nor you realize it even exits in the game. Sure there are exceptions like Mirror's Edge and Batman AA but for the rest, it's all about Nvidia marketing that make people think PhysX is a vital part of the game while in fact it isn't. And for the Nvidia fanboys showing their PhysX e-penis too. As long as the graphics and gameplay are great I'm sure every gamers out there could care less about PhysX.

[punkrockpolak]

We've all played games with and without physx and I think it's safe to say that physx doesn't "make" the game. Though it definitely adds eye candy and I definitely prefer to use physx when I can, I've never even thought of physx as as requirement or selling point for a game. A big problem for physx is that it's still not available to everyone since there's a strict hardware requirement, so it's difficult for developers to justify spending more time and money to implement a bunch of features that only a fraction of their customers can use.

[gurusan]

physx = marketing gayness

[jmke]

Batman Arcanum Asylium Physix Benchmark

adding random flags doesn't add much; but i did like the smoke, papers and webs, that did add to the atmosphere;

[Solus Corvus]

Physics does make some games. World of Goo for example, and Bontago. And those don't even require a video card for calculations. Just imagine how complex a physics centric game could be on a GPU.

[RaZz!]

We've all played games with and without physx and I think it's safe to say that physx doesn't "make" the game. Though it definitely adds eye candy and I definitely prefer to use physx when I can, I've never even thought of physx as as requirement or selling point for a game. A big problem for physx is that it's still not available to everyone since there's a strict hardware requirement, so it's difficult for developers to justify spending more time and money to implement a bunch of features that only a fraction of their customers can use.

but that's the problem... physx doesnt add any eye candy that wouldnt be possible without it as well. if there was no physx everyone would see fog, steam and waving flags and not only people with nv gpus. so from a customer's standpoint physx actually cripples games and graphics/physics for a large group of gamers.