[Beignet] BUG: Incorrect image write when global work size is an odd multiple of 16

[Zhigang Gong]

Reproduced on my machine, investigating. Thanks for report this bug.

On Sun, May 19, 2013 at 11:30:11AM +0200, Dag Lem wrote:
> Hi,
> 
> If the global work size is an odd multiple of 16, image writes are
> garbled in the last work group(s).
> 
> The diff below triggers the bug in the compiler_fill_image test.
> 
> diff --git a/utests/compiler_fill_image.cpp
> b/utests/compiler_fill_image.cpp
> index c9242b2..6d29342 100644
> --- a/utests/compiler_fill_image.cpp
> +++ b/utests/compiler_fill_image.cpp
> @@ -2,8 +2,8 @@
>  
>  static void compiler_fill_image(void)
>  {
> -  const size_t w = 512;
> -  const size_t h = 512;
> +  const size_t w = 1*16;
> +  const size_t h = 1*16;
>    uint32_t color = 0x12345678;
>    cl_image_format format;
>    cl_image_desc desc;
> -- 
> Best regards,
> 
> Dag Lem
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