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Thread: kernel arguments restrction

  1. #1
    Join Date
    Jul 2017

    kernel arguments restrction

    Hi forum,

    In the manual it is mentioned that

    "Arguments to __kernel functions in a program cannot be declared with the built-in scalar types bool, half, size_t, ptrdiff_t, intptr_t, and uintptr_t". I need the pitch value to be passed to the kernel of type size_t.

    Is there any other way to get around this issue?


  2. #2
    Join Date
    Oct 2015
    Hi duonganh!
    You can send size_t inside in the some pointer to struct, or as pointer to size_t

    struct SomeData {
    // Other data
    size_t pitchValue;
    // Other data

    __kernel OpenCLKernel(..., __global SomeData* data

    __kernel OpenCLKernel(..., __global size_t* pitchValue

    The reason of this restriction is that The OpenCL loves to get the big parts of the data, not single scalar data.


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