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  1. Qt
  2. QTBUG-5002

Font Corruption using QGLWidget::renderText and QPainter::drawText

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Details

    • Bug
    • Resolution: Done
    • P2: Important
    • 4.6.1
    • 4.6.0
    • GUI: OpenGL
    • None
    • 5394052c422f7087263ad6dc6d6a4448b4c4afba

    Description

      Product
      Qt
      Function
      OpenGL
      Version
      4.6.0-beta
      Platform
      Windows Vista
      Platform details
      Vista Home Premium x64 with Service Pack 2.
      Compilers
      MSVC
      Compiler details
      Visual Studio 2005 SP2
      Subject
      Font Corruption using QGLWidget::renderText
      Steps to reproduce / test case
      Compiled our code against 4.6.0 beta, fonts output to a QGLWidget using QGL::renderText are corrupted (about 50% of the time). The background appears black, and the foreground is unclear.
      More information

      Attachments

        1. bug.PNG
          bug.PNG
          8 kB
        2. hellogl.png
          hellogl.png
          33 kB
        3. hellogl.zip
          7 kB
        4. helloglRenderTextValgrindLogs.zip
          7 kB
        5. qt-font-bug-on-win7.png.jpg
          qt-font-bug-on-win7.png.jpg
          11 kB
        6. qt-rt-bug-001.png
          qt-rt-bug-001.png
          224 kB
        7. qt-rt-bug-002.png
          qt-rt-bug-002.png
          54 kB
        8. qt-rt-bug-003.png
          qt-rt-bug-003.png
          28 kB
        9. screen1.png
          screen1.png
          15 kB
        10. testgl.zip
          0.5 kB

        Issue Links

          resulted in

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-7094 Text rendering corruption in designer's about dialog with GL

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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          Activity

            People

              kjernase Trond Kjernåsen (Inactive)
              edie Daron Andrew Edie (Inactive)
              Votes:
              8 Vote for this issue
              Watchers:
              9 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

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