glfw : Portable OpenGL FrameWork ( https://www.glfw.org/ )
libva-v4l2 : This libVA backend is designed to work with the Video for Linux Memory-To-Memory API that is used by a number of video codecs drivers, in particular SoCs found on SBCs. ( https://github.com/mxsrc/libva-v4l2 )
Add an ebuild in portage :
The ebuild is now in the portage tree.
You can also use layman : emerge layman then layman -a chloverlay
For Paludis use this rsync : rsync://gentoo.zugaina.org/chloverlay-portage
If you have a problem : ycarus(-at-)zugaina.org