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  1. Qt
  2. QTBUG-116338

Vulkan-based QQuickWidget or QRhiWidget is rendered incorrectly when in a QScrollArea

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    • 750d00aba (dev), 0a589c027 (6.5), faee1c164 (6.6)

      Here a QRhiWidget set to use Vulkan in a QScrollArea (and some other widget on top).

      The scroll area as at its top-most position, yet the content is shown is if it was scrolled already to the bottom (vertically). Switching to D3D or OpenGL or Metal makes the content show up as expected.

      Something to do with Y being down in NDC with Vulkan.

        1. image-2023-08-22-12-52-32-130.png
          image-2023-08-22-12-52-32-130.png
          40 kB
        2. image-2023-08-22-12-54-48-645.png
          image-2023-08-22-12-54-48-645.png
          11 kB
        For Gerrit Dashboard: QTBUG-116338
        # Subject Branch Project Status CR V
        499957,2 Fix backing store compositor transform with Vulkan dev qt/qtbase Status: MERGED +2 0
        502269,2 Fix backing store compositor transform with Vulkan 6.6 qt/qtbase Status: MERGED +2 0
        502271,2 Fix backing store compositor transform with Vulkan 6.5 qt/qtbase Status: MERGED +2 0

            lagocs Laszlo Agocs
            lagocs Laszlo Agocs
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              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes