Nvidia disables PhysX when ATI card is present

**Regeneration** · September 22nd, 2009, 09:48 PM

Erm, I'll check out this report.

Ashira · September 23rd, 2009, 09:41 AM

I'm also willing to test the drivers on Vista 64-bit.

GenL · September 23rd, 2009, 04:18 PM

I sent testing materials and instructions to few more testers, via pm.

To all testers:
Make sure you can actually see the difference when PhysX is enabled and disabled. Expected conditions are:
1. that PhysX-on-GPU is working fine for you while ati card is set as a main device for 185.68 and earlier drivers.
2. that PhysX-on-GPU is not working (blocked) while ati card is set as a main device for 185.81 and later drivers.

Ashira, check your pm. But i don't actually understand what are you going to do with Vista, because the whole topic is about Windows 7.

Alex_Dark · September 23rd, 2009, 06:04 PM

GenL,

If someone don't want to change to windows 7, then shouldn't you make a vista compatible version for them?

GenL · September 23rd, 2009, 07:04 PM

Quote:

Originally Posted by Alex_Dark

GenL,

If someone don't want to change to windows 7, then shouldn't you make a vista compatible version for them?

Would be glad to do so, but WDDM 1.0 doesn't support more than one GPU driver, as already mentioned somewhere in the thread...

Or did miss something and someone managed to enable Vista to support amd+nvidia cards and even PhysX-on-GPU working? I wonder how complex it was, if it's true...

Alex_Dark · September 23rd, 2009, 07:19 PM

So, in order to enable physx on ATI card, the only way is to use 2 GPU driver?

I saw old post that regeneration will make only the physx layer on nvidia driver run on ati driver...
correct me if i'm wrong...

GenL · September 23rd, 2009, 09:10 PM

Quote:

So, in order to enable physx on ATI card

Actually we are trying to enale PhysX on nvidia cards. Please re-read the first post.

We are talking here about trying to fix nvidia drivers, since they started to block PhysX-on-GPU functionality on their own cards, if the main device is not nvidia card.

And about that layer-driver stuff to enable PhysX processing on ati cards... Do you believe that nvidia will convert PhysX processing to OpenCL or DirectCompute, making it compatible with every DX11 card? IMO chances of this issue are almost equal to our hopes to get that magic driver for ati cards... Of course, i can be wrong (and i want to be wrong) about this.

Pat · September 23rd, 2009, 10:03 PM

Quote:

Originally Posted by GenL

And about that layer-driver stuff to enable PhysX processing on ati cards... Do you believe that nvidia will convert PhysX processing to OpenCL or DirectCompute, making it compatible with every DX11 card? IMO chances of this issue are almost equal to our hopes to get that magic driver for ati cards... Of course, i can be wrong (and i want to be wrong) about this.

Actually, they didn't say NO

http://www.bit-tech.net/news/hardwar...sx-to-opencl/1

Skyfallkavu · September 23rd, 2009, 11:38 PM

I know you guys are probably tired of hearing this, but from what I gather you guys are beta testing updated drives that pass the nvidia ATI lock? How stable are they and how long do you think they will be in beta?

GenL · September 23rd, 2009, 11:57 PM

Quote:

Originally Posted by Skyfallkavu

How stable are they

As stable as original drivers. I don't think there will be stability problems caused by our *subject*, but if there will be problems in future, i'll look into them.

Quote:

Originally Posted by Skyfallkavu

how long do you think they will be in beta?

Currently i'm waiting for a feedback from x64 testers (x86 is almost completed). After that we'll think, if we should wait for another one WHQL driver fom nvidia or not, to release first public version of a *subject*.