Revision control
++ fxc /T vs_5_0 /E quad_vs_main /Fh quad.vert.inc quad.vert
++ fxc /T ps_5_0 /E quad_ps_main /Fh quad.frag.inc quad.frag
++ fxc /T vs_5_0 /E quad_vs_main /Fh quad.vert.inc quad.vert
++ fxc /T ps_5_0 /E quad_ps_main /Fh quad.frag.inc quad.frag