Ahmed Hesham 8b1a44f93f Reduce the Vulkan interop buffer kernel workgroup size to 256 (#1828) ...

Using `local_size_x = 512` in the shader used in the Vulkan interop
tests fails on older hardware because this exceeds the maximum barrier
size limit.

Changed to 256, which is still a multiple of 32 and 64,
and is below the hardware limitations. The tests are not performance
tests anyways, so the performance penalty, if any, is acceptable.

Signed-off-by: Ahmed Hesham <ahmed.hesham@arm.com>

2023-11-15 00:03:46 +05:30

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