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
