NAME

       Access_Qualifiers - Access Qualifiers for image memory objects.

       __read_only __write_only read_only write_only

DESCRIPTION

       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.

NOTES

       The __read_only, __write_only, __read_write, read_only, write_only and read_write names
       are reserved for use as access qualifiers and shall not be used otherwise.

   Example
       In the example below, imageA is a read-only 2D image object, and imageB is a write-only 2D
       image object.

       __kernel void foo (read_only image2d_t imageA,
       write_only image2d_t imageB) { ...  }

SPECIFICATION

       OpenCL Specification[1]

AUTHORS

       The Khronos Group

COPYRIGHT

       Copyright © 2007-2011 The Khronos Group Inc.
       Permission is hereby granted, free of charge, to any person obtaining a copy of this
       software and/or associated documentation files (the "Materials"), to deal in the Materials
       without restriction, including without limitation the rights to use, copy, modify, merge,
       publish, distribute, sublicense, and/or sell copies of the Materials, and to permit
       persons to whom the Materials are furnished to do so, subject to the condition that this
       copyright notice and permission notice shall be included in all copies or substantial
       portions of the Materials.

NOTES

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