Access_Qualifiers - Access Qualifiers for image memory objects.

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       Image objects specified as arguments to a kernel can be declared to be read-only or write-only. A kernel
       cannot read from and write to the same image object. The __read_only (or read_only) and __write_only (or
       write_only) qualifiers must be used with image object arguments to declare if the image object is being
       read or written by a kernel. The default qualifier is __read_only.

       Access_Qualifiers - Access Qualifiers for image memory objects.

       __read_only __write_only read_only write_only

        1. OpenCL Specification
           page 226, section 6.6 - Access Qualifiers

The Khronos Group                                  11/18/2024                             ACCESSQUALIFIERS(3clc)

OpenCLSpecification[1]