I've been working through my CUDA Pd project, and I ran into the problem of making externals that copy the canvas class.
My first idea was that I wanted a completely separate class with different methods using glist. Calls from Pd looking for t_canvas work just fine, but functions like pd_findbyclass that look for canvas_class fail. I started mucking around in the pd src, and I think it's just too difficult and would make onerous changes that I don't like. Is there something I'm not getting about canvas classes and externals? My second approach to creating an external library is to modify glist by adding an "unsigned int gl_hascuda" variable. I'd still prefer solutions that make use of entirely external libraries over modifying src, but this small change gets me half the way there. Then, I just need to write the creator functions and the class works. Chuck
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