Spent some time on OpenGL-ctypes this evening. First up was eliminating the crashes in the GLU tessellation code. That was mostly just passing in the wrong values for use as callbacks (I was passing in a cCallbak, it wanted a c_void_p). Unfortunately, the tessellation doesn't seem to work yet, but at least it doesn't kill the process when it fails.

Then back to the image-handling code. No clue why, but the silly thing is now taking down my whole machine (no keyboard, X-windows totally unresponsive) when I try to run the "save image" demo from OpenGLContext. Sigh.