Just wanted to let you know that cl4d is basically usable now. Some things like OpenGL interoperability still need to be finished though and of course it needs to be extensively tested for bugs.

http://bitbucket.org/trass3r/cl4d

I just wanted to mention that is a nice initiative. I currently work on an OpenCL project, unfortunately I already have 6 month of coding it in C, so is a bit late for switching to D. However, for the next one, I am gonna give a try to cl4d.

Thanks! Note that bindings to the C API are included.
They are pretty much complete, I just haven't found a way yet to
organize extensions. If you've got an idea, just share it ;)