I have made a small Qt3 / OpenGL backend which we use for fast animated
plots. It depends on PyOpenGL and a tiny SWIG wrapping of FTGL (texture
mapped FreeType fonts). Using GL directly seemed the quickest way to get
high framerates on large displays. I understand the concerns about a
proliferation of unsupported backends (with no image support, sorry),
but if anyone is interested is there anywhere to upload this where other
people could have a look?