4 Replies Latest reply on Jul 29, 2010 9:02 PM by rick.weber

    Passing NULL pointer to the kernel ?

    spectral

      The OpenCL specification (1.0.43) seems to indicate that it's legal to pass a NULL pointer to an OpenCL kernel:

      "A NULL value can also be specified if the argument is a buffer object in which case a NULL value will be used as the value for the argument declared as a pointer to __global or __constant memory in the kernel." and "The memory object specified as argument value must be a buffer object (or NULL) if the argument is declared to be a pointer of a built-in or user defined type with the __global or __constant qualifier."

      But I got a crash when I do this !

       

      ERROR: clSetKernelArg(-38)

       

      In my case, sometimes I have nothing to pass to the kernel... how should I do ?