other than messing with the settings in the nv control panel there's nothing you can do

Davros wrote:

other than messing with the settings in the nv control panel there's nothing you can do

Installation of different settings in the NVidia control panel did not help. The problem is in the driver NVidia. On the driver version 337.88 of this error is not. How to report a technical support NVidia, to correct errors in the driver?
Another screenshots of the error in the textures:

nVidia has a bug submission page through their Support pages - it requires a log-in so it cannot be linked directly. You can get to it from this page:
http://nvidia-submit.custhelp.com/app/answers/list

Select "Submit Bug" and follow the directions. That said, I doubt they will rank this a very high priority since this is a tech demo designed for a specific piece of hardware that's over ten years old. Of course if this bug also exists in commercial software that uses similar/equivalent functions that's another story, and if you can recreate this in a specific game or application beyond the Dawn tech demo, I'd probably lean more on that.

Also, if I remember right, the Dawn Ultra demo itself isn't designed to be run on anything but GeForce FX 5800 series. That doesn't mean it *can't* be run on anything but FX 5800, but it's primarily designed for that card. So they may completely ignore your request because GTX 670 is not the target device. Does the "normal" Dawn demo run correctly on GTX 670? (I've honestly never had a mind to try ancient tech demos on modern hardware, so I've got no idea; I know this demo works properly on FX 5800 with relatively modern (by GeForce FX standards) drivers). It also appears they've taken the Dawn Ultra demo off of their website - they still provide Dawn, and Dusk Ultra, but no links to Dawn Ultra. 😊

I don't see the "body divided in two parts" thing here. 64-bit Windows 7, 344.75 driver, GTX 660.

Ultra model, shaders and config files are part of the Dawn demo that I downloaded. I don't know how to invoke it though, there is only one executable. Maybe it depends on video card Device ID. There's probably a command line switch to force it into Ultra mode? -Ultra or /Ultra doesn't do anything.

EDIT

oh duh..never mind, I wasn't paying attention. I don't have start menu entries with the Ultra shortcut because I reinstalled Windows. Dawn is installed on my storage drive.

EDIT #2 grabbed the 347.52 driver and reinstalled Dawn. Fairy has "body divided in two parts" in Ultra mode. I don't think it's a texture bug, the texture is fine. It's probably one of the Ultra specific shaders.

The command to run the ultra demo is "fairy.exe args_ultra.txt".
Too bad this demo uses many proprietary GL extensions (NV_...) and can't start on an ATi hardware.

For the curious, this is what it looks like on FX 5800 Ultra (and yes it runs perfectly fluidly):

You can see on the 5800 Ultra's output there's a "seam" for a shadow, which appears to be roughly where the problems are occurring for the GTX 600 cards.

I also tried it on Quadro FX 1700, and it will animate the Ultra mode mostly correctly - there are some lighting issues, and the camera controls don't respond as they should, but no "body in half" problems. I also could not get it to properly screen-grab. I'm not sure if that's Windows 7 causing trouble, or another issue with the demo being run on non-FX hardware.

Gamecollector wrote:

The command to run the ultra demo is "fairy.exe args_ultra.txt".
Too bad this demo uses many proprietary GL extensions (NV_...) and can't start on an ATi hardware.

Well, there's this.
http://www.rage3d.com/articles/atidawning/

I also found that this error in the textures present in the NVidia Demo Dusk Ultra. GeForce GTX 980. Driver version 347.88
Screenshots of the error in the textures:

This is obviously a driver bug, probably with regards to something the lighting or skin shader's doing, as it used to work fine. Report it to Nvidia, they fixed a bug that occurred in the New Dawn demo that I reported on the 780 Ti when it was first released.

Stiletto wrote:

Gamecollector wrote:

The command to run the ultra demo is "fairy.exe args_ultra.txt".
Too bad this demo uses many proprietary GL extensions (NV_...) and can't start on an ATi hardware.

Well, there's this.
http://www.rage3d.com/articles/atidawning/

Doesn't seem to work on current radeons, the wrapper misses out on the occlusion query extension