D3D12 needs to check the flag D3D12_FEATURE_DATA_D3D12_OPTIONS6::AdditionalShadingRatesSupported and filter out VRS modes that aren't supported. This flag should be put into something like "GRHISupportsLargerVariableRateShadingSizes" and the material VRS modes should be filtered based on that.
Using a machine with a AMD Radeon RX 6700 XT (TODO: determine other cards with lower VRS support)
Enable VRS on a material and enable VRS in the project settings.
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-155136 in the post.
| 0 |
| Component | UE - Graphics Features |
|---|---|
| Affects Versions | 5.0 |
| Target Fix | 5.1 |
| Created | May 27, 2022 |
|---|---|
| Resolved | Aug 15, 2022 |
| Updated | Aug 30, 2022 |