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  1. Qt
  2. QTBUG-77231

Wrong blending with ColorDodge and ColorBurn modes

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P3: Somewhat important
    • Resolution: Fixed
    • Affects Version/s: 5.12.4, 5.13.0
    • Fix Version/s: 5.12.5
    • Component/s: GUI: Painting
    • Labels:
      None

      Description

      There is a problem with QPainter::CompositionMode_ColorDodge and QPainter::CompositionMode_ColorBurn composition modes in some corner cases.

      You can see an expected blending results here and here (CSS 3). I've attached some sample images with expected and real results.

      This bug also causes the wrong behaviour of QtWebKit's blending.

        Attachments

        1. example1.png
          example1.png
          36 kB
        2. example2.png
          example2.png
          218 kB
        For Gerrit Dashboard: QTBUG-77231
        # Subject Branch Project Status CR V

          Activity

            People

            • Assignee:
              vgt Eirik Aavitsland
              Reporter:
              polter.rnd polter.rnd
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              Dates

              • Created:
                Updated:
                Resolved:

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