Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-74406 Abstract away the graphics APIs in Qt
  3. QTBUG-78792

Varied performance in scenes with > 1000 unbatched geometry nodes

    XMLWordPrintable

Details

    • Technical task
    • Resolution: Done
    • P2: Important
    • 5.14
    • Qt RHI, Quick: SceneGraph
    • None

    Description

      Running something like benchmarks\auto\changes\changing_over_isolated_with_clip_rotated.qml with qmlbench shows that the rhi path is always slower, especially with Vulkan.

      There is a difference even when disabling clip: true from the test case, esp. when increasing the number of (unbatched) items in the scene from 1000 to something bigger.

      QTBUG-78620 and QTBUG-78862 should improve this.

       

       

      Attachments

        Issue Links

          is required for

          Technical task - A technical task. QTBUG-78587 Identify and possibly fix performance issues with qmlbench on the QRhi based rendering path in Qt Quick

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed
          relates to

          Technical task - A technical task. QTBUG-78620 Move away from QVector and d pointers in QRhiResource subclasses

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Technical task - A technical task. QTBUG-78862 QRhiPassResourceTracker is slow

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Closed

          Task - A task that needs to be done. QTBUG-78852 QRhi OpenGL/Vulkan backend: consider if dynamic buffers should follow the MAP_DISCARD style approach like d3d11

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          mentioned in

          Page Loading...

          Activity

            People

              lagocs Laszlo Agocs
              lagocs Laszlo Agocs
              Votes:
              0 Vote for this issue
              Watchers:
              1 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: