Nanite Tessellation materials invisible on AMD Radeon RX 6600 XT GPUs

Development Rendering
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1

Nanite Tessellation doesn’t seem to work on certain AMD GPUs (observed on a Radeon RX 6600 XT). Please see repro steps below.

Tested with driver version 32.0.12033.5029

2

Steps to Reproduce
Repro steps:

  • Open the attached project on a system with a AMD Radeon RX 6600 XT GPU
  • Observe that the plane is invisible
  • Type r.Nanite.Tessellation 0 into the console
  • Move the camera to make the viewport refresh
  • Notice that the plane shows up

Alternative repro steps:

  • Create a new project on a system with a AMD Radeon RX 6600 XT GPU
  • Create a new material and tick “Nanite Tessellation” and "With Nanite)
  • Enable Nanite on the default cube
  • Drag the default cube into the scene and set the material that you have created
  • Notice that it doesn’t show up
3

Hello,

Similar issues with Nanite Tessellation and AMD drivers have been reported in the past for UE 5.4 and you may need to add those drivers to your +DriverDenyList or turn off Nanite Tessellation for those GPU and driver combinations.

This is the related issue: [Content removed]

See this article for information about ways to deny a driver or turn off a feature based on a driver version:

https://dev.epicgames.com/community/learning/knowledge-base/q3W3/unreal-engine-how-to-override-cvars-for-specific-gpus-using-device-profile-matching-rules

4

Hi Alex,

This is exactly the problem that we are having. How did I not find this thread?

We will disable Nanite Tessellation on the 5000 and 6000 series cards and retest it with a different driver when we are closer to release.

Thank you!

5

This problem can be observed in Fortnite for months, I have already tested 2 different CPUs with the RX 6600, I have tested video drivers from 2022 to the present moment and the landscape simply does not render as it should when leaving Nanite on.