[gstreamer-bugs] [Bug 599883] New: [differencematte] regressions after gdkpixbuf to libpng migration

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=599883
  GStreamer | gst-plugins-gl | git

           Summary: [differencematte] regressions after gdkpixbuf to
                    libpng migration
    Classification: Desktop
           Product: GStreamer
           Version: git
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-gl
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: fargiolas at gnome.org
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


GstGLDifferenceMatte used gdk_pixbuf_scale_simple to scale the background image
to fit other textures size. This was obviously wrong and needed to be fixed,
but it worked.
When gdkpixbuf was dropped this plugin was neither fixed to use gl for scaling
nor updated to the libpng equivalent function for scaling. So it works fine
only if the background image has the exact size of the current texture.

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