3dMark has added a Tier 2 variable rate shading benchmark.
https://benchmarks.ul.com/news/new-ways-to-test-variable-rate-shading-with-3dmark
"There are two tiers of VRS support. With Tier 1, developers can specify a different shading rate for each draw call. Tier 2 adds more flexibility and control by allowing different shading rates within each draw call.
In our Tier 2 test, lower shading rates are used in areas where there is low contrast between neighboring pixels, for example, areas in shadow or with fewer details.
The VRS feature test also offers an interactive mode that lets you change Variable-Rate Shading settings on the fly to see how they affect the frame rate and image quality. There's even a handy visualizer option, shown below, that shows you where each shading rate is used."
https://benchmarks.ul.com/news/new-ways-to-test-variable-rate-shading-with-3dmark
"There are two tiers of VRS support. With Tier 1, developers can specify a different shading rate for each draw call. Tier 2 adds more flexibility and control by allowing different shading rates within each draw call.
In our Tier 2 test, lower shading rates are used in areas where there is low contrast between neighboring pixels, for example, areas in shadow or with fewer details.
The VRS feature test also offers an interactive mode that lets you change Variable-Rate Shading settings on the fly to see how they affect the frame rate and image quality. There's even a handy visualizer option, shown below, that shows you where each shading rate is used."
