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PC Graphics

Alojz
Journeyman III

RX 6600M - variable rate shading supported?

Hello,

Background

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

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.

On the AMD product page for the GPU - https://www.amd.com/en/products/graphics/amd-radeon-rx-6600m,

Radeon Boost with VRS is marketed.

Driver version

Alojz_0-1653387943862.png

 

Question

Does this GPU support VRS and makes it available for developers?

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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