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  1. Qt
  2. QTBUG-83263

Rendering of multiple framebuffers object leads to degraded render performance with Wayland

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    • Linux/Wayland
    • 98aea22d839000a377d0fc646133f76e08b44f6e (qt/qtwayland/dev) 2a77384a4f2485364cefeb825eea63daf13dd3b1 (qt/qtwayland/5.15)

    Description

      Rendering of multiple instances of a framebuffer object leads to degraded render performance on Wayland platform. The similar effect does not happen on other QPA's like xcb or eglfs.

      Steps to reproduce:

      1. Run the compositor in attached example project qmlscene compositor.qml
      2. Execute the application with Wayland  ./qquickviewcomparison -platform wayland

      Expected result:

      1. The animation runs smoothly on three framebuffer object.

      Actual result:

      1. The animation performance is heavily impaired and frame rate goes down to 5-8FPS.

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              tvete Paul Olav Tvete
              tuomas.vaarala Tuomas Vaarala
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                Created:
                Updated:
                Resolved: