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  1. Qt
  2. QTBUG-17952

[REG]: When moving an antialiased painter path in a QGraphicsScene then it takes longer to move it around if the path is a complex one

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Details

    • Bug
    • Resolution: Unresolved
    • P2: Important
    • None
    • 4.7.2
    • GUI: Painting
    • None
    • Mac OS X (using Raster graphicssystem)
    • macOS

    Description

      [REG]: When moving an antialiased painter path in a QGraphicsScene then it takes longer to move it around if the path is a complex one. This is a regression against Qt 4.7.1 as the path could be moved around without any performance problems there. This is related to QTBUG-15660 which is the bug that was caused by the original patch to improve this performance before Qt 4.7.1. This patch got reverted hence the performance has regressed back.

      Attached is an example that reproduces this problem.

      Attachments

        1. examplepathdata.txt
          673 kB
        2. main.cpp
          0.8 kB
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            rodal Samuel Rødal
            andysh Andy Shaw
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            Dates

              Created:
              Updated:

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