16 bits of precision?

Hi,

Whenever running an example from direct RT I get the following error:

Problem In: DirectX Initialize Sub
System.Exception: Direct3D Adapter does not support a 32 bit, 24 bit, or 16 bit depth buffer.
This sample requires a depth buffer with at least 16 bits of precision.
at (control&A_0, presentParameters&A_1)

Followed by:

An Error has occurred while trying to load a style's font.
The Font: Verdana, was not found or is inaccessible.
Please make sure the following font was not the result of a spelling error, and that it is installed on your system. If the error persists try running the font at different sizes and under a different font family.

Running directRT 2010 on Windows XP with the admin account.

Any help is greatly appreciated.

Thank you

This system is a Dell Optiplex 780, Core 2 Duo, 4GB of ram, Windows XP, Video running on the onboard Intel 4 series chipset. I added a Radeon HD3450 512MB and I still get the same error. Reinstalled DirectRT v2010 and still get the same problem. Attached is the DirectX report.
All I'm trying to do is run the samples that come with DirectRT and I get the from the post above.
Nobody has had this issue before?

Looking over the dxdiag info from the test machine, it appears that the Display Memory is coming up as "n/a" and the "video acceleration" and "ddraw status" are not known by the system. This has come up before with Optiplex systems in the past and in systems with the Intel chipset. We're working now with the IT folks at UTSA to see if we can get the system to be "aware" of its display hardware by installing a video card instead of using the onboard Intel chipsets. Hopefully, we will have some good news soon...

See also: [URL]http://www.empirisoft.com/support/showthread.php?t=550[/URL]

Btw, here are some of the relevant current DXDIAG settings for the Optiplex while using the Intel chipset:

Card name: Intel(R) 4 Series Internal Chipset
Manufacturer: Intel Corporation
Chip type: Intel(R) 4 Series Express Chipset Family
[B][COLOR=darkred]Display Memory: n/a[/COLOR][/B]
[B][COLOR=darkred][/COLOR][/B][COLOR=darkred][B]Video Accel: [/B][/COLOR]
[COLOR=darkred][B]DDraw Status: Not Available[/B][/COLOR]
D3D Status: Not Available
AGP Status: Not Available

Update:

After trying to update from the Intel Chipset to an ATI Radeon card, we still had the same issue--Windows was unaware of the the display hardware's status:

Highlights:

Card name: ATI Radeon HD 3400 Series
Manufacturer: ATI Technologies Inc.
Chip type: ATI Radeon Graphics Processor (0x95C5)
[B][COLOR=darkred]Display Memory: n/a[/COLOR][/B]
[B][COLOR=darkred]Video Accel: [/COLOR][/B]
[B][COLOR=darkred]DDraw Status: Not Available[/COLOR][/B]
D3D Status: Not Available
AGP Status: Not Available

It was clear that we would need Windows to know that DirectX was installed and
operating properly. We found a prior thread (also dealing with Optiplex systems) where a user describes a solution they found for this issue:

[URL]http://www.empirisoft.com/Support/showthread.php?p=9407[/URL]

We followed to the instructions to change the registry key to "7" instead of "0" and after a reboot, the system recognized all the required DirectX components and DirectRT was able to start. Tomorrow, the lab will test the machines to see if their experiments can run now.

See also: [URL]http://support.microsoft.com/kb/191660[/URL]

An update:
In our case we do not use Net Support on the system in question but we do use the Aclient from Altiris.
The fix seems to work for both remote tools (net Support and Altiris).
Thank you for all your help Blair!

Thanks for the update, glad to hear all is working well. -Blair :)

Note to other users, another helpful suggestion was offered here by a diferent user via email:

[quote]I had almost the exact same problem last year. The computers I bought had separate, fancy video cards, but Direct RT said that my card didn't support its video requirement. As it turns out, although the video card was installed properly, it wasn't the default video processor. So, all I had to do was update the driver for my display to the video card and my DirectRT problem was solved. [/quote]