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  1. Qt
  2. QTBUG-75659

Transparency configuration in Qt EGLFS/KMS application

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    • Commits:
      181e5382e741c290d72010da9d6d74908e7b2d8f

      Description

      It is needed to support premultiplied transparent mode on startup for EGLFS/KMS platform-based application. It could be supported if used blend_op property for drmPlane (by default, it used opacity value - coverage).

      It would be very useful to be able to initialize the property via environment variable on startup. 

      Surely, it can be set manually by DRM interface:

      int drmModeAtomicAddProperty(drmModeAtomicReqPtr req, uint32_t object_id,  uint32_t property_id, uint64_t value);

      But it might be a problem with single blink on start. 

        Attachments

        1. application_logs.txt
          15 kB
        2. not-transparent.txt
          16 kB
        3. transparent.txt
          17 kB
        For Gerrit Dashboard: QTBUG-75659
        # Subject Branch Project Status CR V

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            Assignee:
            tvete Paul Olav Tvete
            Reporter:
            nkrasnoyarov NIKITA KRASNOYAROV
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              Dates

              Created:
              Updated:
              Resolved:

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