[cairo-bugs] [Bug 84184] New: surface-pattern-scale-down-extend-none.xlib-fallback.rgb24 failure

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84184

          Priority: medium
            Bug ID: 84184
          Assignee: chris at chris-wilson.co.uk
           Summary: surface-pattern-scale-down-extend-none.xlib-fallback.r
                    gb24 failure
        QA Contact: cairo-bugs at cairographics.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: sixtysix at inwind.it
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: xlib backend
           Product: cairo

Created attachment 106680
  --> https://bugs.freedesktop.org/attachment.cgi?id=106680&action=edit
proposed patch

Another case of mistreating OVER as SOURCE, in this case internally.

A pattern with EXTEND_NONE is considered opaque because its downscaled
area is contained in its source extent, so apparently not requiring to
sample the padding (for interpolation purposes) transparent area
surrounding the opaque source surface.

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