!dev-games/openscenegraph
dev-libs/glib:2
media-libs/fontconfig

media-libs/mesa[egl
      (+)
?
]
virtual/glu
virtual/opengl
x11-libs/libSM
x11-libs/libXext

collada?
      ( dev-libs/collada-dom:= )

curl?
      ( net-misc/curl )

examples?
      ( fltk?
            ( x11-libs/fltk:1[opengl] )
       fox?
            ( x11-libs/fox:1.6[opengl] )
       sdl2?
            ( media-libs/libsdl2 )
       wxwidgets?
            ( x11-libs/wxGTK:3.2-gtk3[opengl,X] )
       )

gdal?
      ( sci-libs/gdal:= )

gif?
      ( media-libs/giflib:= )

gstreamer?
      ( media-libs/gstreamer:1.0 media-libs/gst-plugins-base:1.0 )

jpeg?
      ( media-libs/libjpeg-turbo:= )

las?
      ( >=sci-geosciences/liblas-1.8.0 )

lua?
      ( lua_single_target_lua5-1?
            ( dev-lang/lua:5.1 )
       )

openexr?
      ( dev-libs/imath:= >=media-libs/openexr-3:= )

openinventor?
      ( media-libs/coin )

pdf?
      ( app-text/poppler:=[cairo] )

png?
      ( media-libs/libpng:0= )

sdl?
      ( media-libs/libsdl )

svg?
      ( gnome-base/librsvg:2 x11-libs/cairo )

tiff?
      ( media-libs/tiff:= )

truetype?
      ( media-libs/freetype:2 )

vnc?
      ( net-libs/libvncserver )

xrandr?
      ( x11-libs/libXrandr )

zlib?
      ( sys-libs/zlib )