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PC Drivers & Software

Alojz
Journeyman III

Variable rate shading supported in latest AMD drivers?

Hello,

Background

I am running the FidelityFX VRS sample - https://gpuopen.com/fidelityfx-variable-shading

on RX 6600M.

The sample runs, but reports "GPU does not support VRS".

Internally in the code, D3D12_VARIABLE_SHADING_RATE_TIER_NOT_SUPPORTED is reported with the use of CheckFeatureSupport() DirectX API call.

Driver version

Alojz_0-1653387943862.png

Question

Do the latest Windows drivers expose VRS API and for this particular GPU?

If yes, what is the fix to have it available (i.e. getting D3D12_VARIABLE_SHADING_RATE_TIER_1 and/or D3D12_VARIABLE_SHADING_RATE_TIER_2 from the DirectX)?

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