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Radeon Vulkan Variable Rate Shading Benchmarks For Boosting RDNA2 Performance

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  • Radeon Vulkan Variable Rate Shading Benchmarks For Boosting RDNA2 Performance

    Phoronix: Radeon Vulkan Variable Rate Shading Benchmarks For Boosting RDNA2 Performance

    Landing in Mesa 21.1 on Friday was a variable rate shading (VRS) override for the Radeon Vulkan "RADV" driver for providing significant performance boosts by effectively rendering less. This feature is limited to RDNA2 graphics processors while here are some benchmarks on what it means for 4K gaming with the AMD Radeon RX 6000 series graphics cards on Linux.

    https://www.phoronix.com/vr.php?view=30115

  • #2
    The roof of the car in DIRT Rally looks quite crappy imho. But perhaps it's not so distracting...

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    • #3
      Doesn't really look any different than just turning down shadow detail, and likely results in a similar performance gain.

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      • #4
        Hi Michael

        I would imagine that this might affect Antialiasing, but these pictures in the examples are not full resolution.
        Any chance you could add the full resolution images ?

        br Magnus

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        • #5
          Originally posted by pracedru View Post
          Hi Michael

          I would imagine that this might affect Antialiasing, but these pictures in the examples are not full resolution.
          Any chance you could add the full resolution images ?

          br Magnus
          THey are full resolution if you click on the image and then right click 'view image' from that page.
          Michael Larabel
          http://www.michaellarabel.com/

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          • #6
            Originally posted by Michael View Post

            THey are full resolution if you click on the image and then right click 'view image' from that page.
            oh.. nice...
            my bad.

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            • #7
              Originally posted by Michael View Post

              THey are full resolution if you click on the image and then right click 'view image' from that page.
              Very minor comment: when doing that, the server is providing a different favicon, I guess an older one.

              ‚Äč
              Feel free to delete this comment after reading.

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              • #8
                Certainly would be interesting to see the effect at 1080p on lower end RDNA2 cards.

                Hopefully more games will make explicit use of this in targeted (dark/shadowed/smoothly shaded) areas in the future so that the image quality remains nearly perfect.

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                • #9
                  Originally posted by sykobee View Post
                  Certainly would be interesting to see the effect at 1080p on lower end RDNA2 cards.

                  Hopefully more games will make explicit use of this in targeted (dark/shadowed/smoothly shaded) areas in the future so that the image quality remains nearly perfect.
                  Didn't Michael test all the available RDNA2 cards?

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                  • #10
                    Originally posted by Michael View Post
                    They are full resolution if you click on the image and then right click 'view image' from that page.
                    I have some doubts whether that is exactly what you can see displayed on your monitor because the 3840x2160 images are JPEGs, not PNGs. It is hard to tell what is JPEG compression loss and what is VRS 2x2 loss when comparing the two images.

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