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.

This issue has also been reported to Autodesk Inventor forums.

[Roy_Intel]

Hello Iecku,

Thank you for posting your question on the Intel Community.

We noticed that you have created another inquiry and are currently being assisted through that. To avoid any confusion or duplication of efforts, we will be proceeding with closing this inquiry.

Please rest assured that our team will continue supporting you through the new inquiry. If you have any further questions or concerns, feel free to reach out to us there, and we will be glad to assist.

Thank you for your understanding.

Best regards,

Roy,

Intel Customer Support Technician