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) { ... } |
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