This is a place for demos for cl-xcb-xlib. Try these:
(asdf:load-system :cl-xcb-xlib-demos) (xcb.clx.demos:run-gears) (xcb.clx.demos:cairo-run 'cairo-demos:arc1) (xcb.clx.demos:cairo-run 'cairo-demos:mesh1)
The main part of this was ripped off from the demo in PORTABLE-CLX, and converted to work with cl-opengl and the newer GL calls required for direct GLX. You can optionally specify :SCREEN N to make it run on a different head (useful if one has faster GL than the default).
Updated: Cairo demos are now going to be in cl-cairo2 itself. They can be run with only cl-cairo2 using an image-surface, or using cairo-xcb. The stuff below still applies, but the drawing code is in cl-cairo2.
The first sample adapted from cairographics.org/samples/. While the output isn't particularly interesting, it illustrates a number of things:
Making a CLX window and dealing with closing nicely (see MAKE-X-WINDOW and the :client-message case in CAIRO-RUN).
Dealing with configuration changes and resizing the cairo surface.
Mostly proper handling for cleanup of surfaces, windows, displays, etc*
(*Note: Cleanup could actually be better; creation of the display and window should really be inside its own UNWIND-PROTECT.)