Arc Pro B70: Autodesk Inventor 2026 uses VirtualDeviceDx11 instead of DX12 – no hardware RT

[Iecku]

Environment:
- GPU: Intel Arc Pro B70 (ASRock Arc Pro B70 Creator)
- Driver: 32.0.101.8724 (WHQL, dated 16.04.2026)
- OS: Windows 11
- Software: Autodesk Inventor Professional 2026
- DirectX capability reported by driver: DX12, Feature Level 12.2 ✓

Issue:
Autodesk Inventor 2026's OGS (One Graphics System) renderer
instantiates a VirtualDeviceDx11 context for the Arc Pro B70
instead of a native DX12 device. This is visible in Inventor's
Graphics Hardware dialog (Help → Graphics Hardware):

AIRViz Device Manager \ VirtualDeviceDx11
Feature Level 5_0

As DXR (DirectX Raytracing) requires a native DX12 context,
GPU Ray Tracing cannot dispatch DispatchRays() calls to the
hardware RT units. Instead, raytracing runs via the 3D/compute
pipeline as software emulation.

Observed symptoms during active GPU Ray Tracing in Inventor:
- Windows Task Manager GPU engines: 3D ~95%, Compute 0%,
Engine 0%, GSC 0%
- GPU power draw: ~101W average (card is capable of 275W
sustained under real DX12 compute load)
- RT performance on B70 is equal to or worse than CPU ART
(Autodesk Raytracer) on i9-285K

This behavior does not occur with NVIDIA RTX GPUs, which
correctly receive a native DX12 context from OGS and show
proper DXR dispatch patterns.

Root cause hypothesis:
OGS device selection logic does not recognize the Arc Pro B70
as a DX12-capable device, possibly due to missing or incorrect
capability reporting in the 32.0.101.8724 driver, or because
the B70 is absent from Autodesk's internal OGS device
whitelist. The driver correctly reports DX12 FL 12.2 to the OS
and DXGI, suggesting the issue may be in the OGS-specific
capability query path (e.g. D3D_FEATURE_LEVEL negotiation or
OGS device enumeration).

Request:
Please coordinate with Autodesk to ensure the Arc Pro B70 is
correctly enumerated as a DX12 device in OGS, enabling proper
DXR dispatch to hardware RT units.

[Nikhil_Intel]

Hello Iecku,

Thank you for posting your question on the Intel Community.

I sincerely apologize for the impact this is having on your productivity. Before we conclude that this is an application-side enumeration issue, we need to perform a full diagnostic to ensure the driver is correctly reporting its capabilities to the Windows environment.

To help us narrow this down, please perform the following troubleshooting steps:

1. Windows Graphics Preference: Go to Settings > System > Display > Graphics. Find "Autodesk Inventor 2026" in the list (add it if it’s not there), click Options, and ensure it is set to "High Performance" targeting the Intel Arc Pro B70. Occasionally, Windows can force a compatibility layer if this is not set.

2. DXR Capability Verification: To confirm the driver is communicating DXR capabilities correctly to other software, please run a quick DirectX 12 benchmark (such as 3DMark Port Royal or the DirectX Raytracing (DXR) Check tool).

• Goal: If these tools successfully initialize a DX12/DXR context, we can isolate the behavior specifically to the Inventor OGS handshake.

3. Inventor Diagnostics Log: In Inventor, please go to Help > Graphics Hardware, click the Diagnostics button, and export the resulting text file. This log contains the specific "score" or "reason" why the OGS chose the DX11 fallback over DX12.

4. Intel SSU: Please provide an Intel System Support Utility (SSU) report (Network tab should be unchecked). This will allow me to review your specific hardware configuration and investigate further. Please check this link:

 Intel® System Support Utility for Windows*

Please share the requested logs and benchmark results at your earliest convenience. Once we have those, we will proceed with a further check and investigate the root cause.

Thank you for your time and cooperation. I look forward to your update.

Best regards,

Nikhil 

Intel Customer Support Technician

[Nikhil_Intel]

Dear Iecku,

I hope you are doing well.

I am writing to follow up on my previous message regarding the Display/OGS issue with Autodesk Inventor 2026. We have shared a few troubleshooting steps and requested diagnostic details to help us investigate the issue further.

At your convenience, could you please confirm if you were able to complete the steps and share the requested information (Inventor diagnostic logs, DXR benchmark results, and SSU report)? These details are essential for us to analyze the behavior and identify the root cause.

Thank you for your time and cooperation. I look forward to your update.

Best regards,

Nikhil

Intel Customer Support Technician

[Nikhil_Intel]

Dear Iecku,

I hope you are doing well.

I am writing to follow up regarding the Display/OGS issue with Autodesk Inventor 2026. As we have not received a response from you regarding the previously shared troubleshooting steps and requested diagnostic information, I will proceed with closing this inquiry for now.

However, if you still require assistance or have any additional questions, please feel free to submit a new request, and I will be happy to assist you. Kindly note that this thread will no longer be actively monitored.

Thank you for your time and cooperation.

Best regards,

Nikhil

Intel Customer Support Technician