[Bug 730928] New: glcolorscale: avoid using extra FBO pass

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=730928
  GStreamer | gst-plugins-bad | git

           Summary: glcolorscale: avoid using extra FBO pass
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: julien.isorce at gmail.com
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


1- should support GstBaseTransformClass->passthrough_on_same_caps

Indeed if the caps are exactly the same, there is nothing to do (i.e. no need
upload->download)

2- Currently "videotestsrc ! glcolorscale ! "GL" ! fakesink" uses 2 FBO, one
for the upload and one that just does the identity. The later should be
avoided.

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