[cairo-bugs] [Bug 37140] New: Incomplete rendering with OffsetViewportOrgEx

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu May 12 07:13:59 PDT 2011


           Summary: Incomplete rendering with OffsetViewportOrgEx
           Product: cairo
           Version: 1.10.2
          Platform: x86 (IA32)
        OS/Version: Windows (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: win32 backend
        AssignedTo: cairo-bugs at cairographics.org
        ReportedBy: elmar.braun at sh-p.de
         QAContact: cairo-bugs at cairographics.org

I am trying to render to a HDC that has been given an offset with
OffsetViewportOrgEx. Except for text, Cairo does not draw anything to the part
of the window that has been moved into view by the offset.

This problem occurs with Cairo 1.10.2 (pixman 0.22.0). It works as expected
with Cairo 1.8.10.

I have attached some code that reproduces the problem, as well as screen
captures from 1.10.2 (and 1.8.10) that show the broken (and working) rendering.

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