[Bug 729742] New: glcolorconvert: Should set alpha to 1 if source is opaque

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=729742
  GStreamer | gst-plugins-bad | git

           Summary: glcolorconvert: Should set alpha to 1 if source is
                    opaque
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: nicolas.dufresne at collabora.co.uk
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


Currently we simply assume that BGRx is like BGRA, though in first form the x
means that the padding value is not guarantied opaque. For this reason,
glcolorconvert should take this into account, and explicitly set the alpha to
1.0 rather then using the padding value.

On armsoc X11 driver, all windows have ARGB visual, which lead to randomly
transparent window with BGRx.

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