testing/sdl2_gfx: new aport
SDL2 graphics drawing primitives and other support functions.
https://www.ferzkopp.net/wordpress/2016/01/02/sdl_gfx-sdl2_gfx/
SDL2 graphics drawing primitives and other support functions.
https://www.ferzkopp.net/wordpress/2016/01/02/sdl_gfx-sdl2_gfx/