virtual/opengl

fltk?
      ( x11-libs/fltk:1= )

gif?
      ( media-libs/giflib:= )

glut?
      ( media-libs/freeglut )

gsl?
      ( >=sci-libs/gsl-2:= )

hdf?
      ( sci-libs/hdf )

hdf5?
      ( >=sci-libs/hdf5-1.8:=[mpi=] )

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

octave?
      ( >=sci-mathematics/octave-3.4.0:= )

openmp?
      ( sys-cluster/openmpi )

pdf?
      ( media-libs/libharu:= )

png?
      ( media-libs/libpng:= )

qt6?
      ( dev-qt/qt5compat:6 dev-qt/qtbase:6[gui,opengl,widgets] )

wxwidgets?
      ( x11-libs/wxGTK:3.2-gtk3=[X] )

zlib?
      ( sys-libs/zlib )