I am trying to make a class that would be passable to Kernel's set_arg() and otherwise behave like a Buffer (it will have a real pyopencl.Buffer inside). Has someone done that before? I am having a hard time going through the C++/generated code in pyopencl, and still don't understand what exactly is required from such a class. The docs for Kernel.set_arg() list a number of types that it accepts, but these are all defined at the C level and are not very easy to subclass.
A question to Andreas: in PyCUDA, it is enough for a kernel argument to just have a `.gpudata` attribute that is convertible to integer - would it be possible to do the same in PyOpenCL (at least the first part, where set_arg() would use duck typing and look for a specific attribute)?
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