What editor is he using? It looks a bit like fluxus but for some funky custom-library-laden version of C++... Edit: Looks like it's an editor he designed himse

What editor is he using? It looks a bit like fluxus but for some funky custom-library-laden version of C++... Edit: Looks like it's an editor he designed himself to work on OpenGL fragment shaders (see the bottom video). I can't find any working link to it though.