Luís Oliveira wrote:

In what ways does cl-glfw-opengl differ from cl-opengl?

Well, it's more in-line with the cl-sdl style of opengl binding. As, initially I wrote my own OpenGL bindings because I was having difficulties with cl-sdl and lispbuilder on Mac OS X (and was generally averse to GLUT).

So the main differences are: * You specify the function's “command suffix”, eg. (gl:color-3f 0 0.5 1) instead of just (gl:color 0 0.5 1), * The GL“enum” constants aren't defined in one large cffi defcenum, but they are just defined as constants, eg. use (gl:clear gl:+color-buffer-bit+) instead of (gl:clear :color-buffer-bit). * All of the OpenGL API and extensions are automatically generated from opengl.org's spec files. Though I have learned (after I wrote the generators) that there is a branch of cl-opengl with more dynamically generated stuff from spec files. * Each registered extension is a separate asd file (this includes the OpenGL and GLU versions, as well) * Instead of focusing on too many individual cases of lispification, I have striven to make (where possible according to the spec files) Lisp sequences transparent as OpenGL functions' array-pointer parameters (though this does require some extra allocation. of course).

On the whole, I'd say the main difference is that cl-glfw-opengl is more OpenGLy and cl-opengl is more Lispy in style.

Ciao bill, who forgot to CC the list first time.