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  1. Qt
  2. QTBUG-60330

eglfs_kms (GBM) should use eglGetPlatformDisplay when available

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Not Evaluated
    • Resolution: Done
    • Affects Version/s: 5.9, 5.10
    • Fix Version/s: 5.10.0 Alpha
    • Component/s: QPA: EGLFS
    • Labels:
      None

      Description

      The GBM version of eglfs' DRM/KMS backend has some problems on some modern systems, see f.ex. https://github.com/lirios/wayland/commit/06bc9cb732895c101a1d9615959eb8eee3523a06.

      For details see https://github.com/libretro/RetroArch/issues/4790

      While the problem is arguably not Qt's fault, eglfs_kms could start using eglGetPlatformDisplay with EGL_PLATFORM_GBM_KHR, when available. This needs dynamic resolving of the EGL 1.5 function.

      In fact the EGLDevice (NVIDIA) variant already does it in its customized QEglFSKmsEglDeviceIntegration::createDisplay. The GBM version should follow suit and do something similar.

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        # Subject Branch Project Status CR V

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            • Assignee:
              lagocs Laszlo Agocs
              Reporter:
              lagocs Laszlo Agocs
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              • Created:
                Updated:
                Resolved:

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