[Bug 729278] gl: avoid using an extra FBO pass in some basic cases

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=729278
  GStreamer | gst-plugins-bad | git

--- Comment #3 from Julien Isorce <julien.isorce at gmail.com> 2014-05-09 08:54:48 UTC ---
4- I also see between each gl elements, lets say gleffects1 ! gleffect2 !
gleffects3 that gstglcolorconvert is used whereas it's RGBA between each
filter.
I mean an additional FBO pass (which does the identity, no scale, no
colorconvert) is used by gstglupload in the input of each glfilter.
i.e.
http://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/gst-libs/gst/gl/gstglupload.c#n265
we could avoid an FBO pass in some cases.

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