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  1. Qt
  2. QTBUG-26268

QtQuick 2.0 bad performance on Intel GMA X3100 (older MacBooks)

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    • d83eb21fb296b73bd111d907dfb9ecde373b9bb3

    Description

      Performance of QtQuick 2.0 based applications (like PhotoViewer example) on older MacBooks is unusable due to oversampling done in software on such machines.

      The attached patch (created during Qt CS 2012, thanks guys!) works around the problem by turning oversampling off. However this greatly reduces rendering quality so we need a kind of blacklist of graphic adapters having that problem.

      Intel GMA X3100:

      Chipset Model: GMA X3100
      Type: GPU
      Bus: Built-In
      VRAM (Total): 144 MB
      Vendor: Intel (0x8086)
      Device ID: 0x2a02
      Revision ID: 0x0003
      Displays:
      Color LCD:
      Resolution: 1280 x 800
      Pixel Depth: 32-Bit Color (ARGB8888)
      Main Display: Yes
      Mirror: Off
      Online: Yes
      Built-In: Yes
      Display Connector:
      Status: No Display Connected

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            kkalland Kim Motoyoshi Kalland (Inactive)
            njeisecke Nils Jeisecke
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              Created:
              Updated:
              Resolved:

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