View Full Version : Problems with CLImage2D on ATi [with minimal example]

10-31-2012, 03:09 AM

I'm not sure if this is the right place to post..

I've come across some strange behaviour on ATi cards. If the resolution of a CLImage2D is exactly 960x540 and the format is CL_UNSIGNED_INT8 or CL_UNORM_INT8 the texture reads return wrong color values. On other resolutions it works as expected.

This behaviour was reproducible on a FirePro V7900 and a HD6900.
On a nvidia GT555M and a GT 630 the output is as expected. The operating system was Win 7 (64bit) and the application was compiled in 32bit mode. Newest ATi drivers and APP SDK were used.

Could this be a driver bug?

Please let me know if you need more informations.

Thanks in advance

The example can be found here: http://pastebin.com/ZAHMHu5B
In this example the kernel only reads from the texture and writes the output to a float buffer. I hope I don't do something wrong here..