Basic usage of XCB https://www.codeproject.com/Articles/1089819/An-Introduction-to-XCB-Programming
https://stackoverflow.com/questions/24963361/how-to-display-a-full-color-image-with-xcb-or-x11
https://www.x.org/releases/X11R7.7/doc/libxcb/tutorial/index.html
http://metan.ucw.cz/blog/things-i-wanted-to-know-about-libxcb.html
http://metan.ucw.cz/blog/things-i-wanted-to-know-about-libxcb.html
https://www.x.org/releases/current/doc/libxcb/tutorial/index.html#intro
https://www.codeproject.com/Articles/1089819/An-Introduction-to-XCB-Programming
https://stackoverflow.com/questions/43029489/how-to-display-an-image-into-an-xcb-window
https://github.com/enn/xcb-examples
Color stuff: https://tronche.com/gui/x/xlib/window/visual-types.html
How to display truecolor on xlib https://www.linuxquestions.org/questions/programming-9/how-to-draw-color-images-with-xlib-339366/
https://www.student.cs.uwaterloo.ca/~cs349/f15/resources/X/xTutorialPart2.html
Other refs http://www.johnculp.net/index.html http://www.johnculp.net/libGx/libGx.html