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  1. Qt
  2. QTBUG-74406 Abstract away the graphics APIs in Qt
  3. QTBUG-78862

QRhiPassResourceTracker is slow

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

    Description

      Take a qmlbench case like benchmarks\auto\changes\changing_over_isolated_with_clip_rotated.qml. Here the clipping disables merging so we end up with ca. 4000 merged/unmerged batches.

      The d3d11 backend performs 10x (compared to gl) and 20x (compared to vulkan) better. This seems to be caused by calls to QRhiPassResourceTracker::trackedRegisterBuffer()

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          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-78792 Varied performance in scenes with > 1000 unbatched geometry nodes

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

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          For Gerrit Dashboard: QTBUG-78862
          # Subject Branch Project Status CR V
          275683,2 rhi: Speed up buffer and texture tracking 5.14 qt/qtbase Status: MERGED +2 0

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              lagocs Laszlo Agocs
              lagocs Laszlo Agocs
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                Updated:
                Resolved:

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