Sven van Haastregt 48003e9d32 [NFC] subgroups: clarify bs128 to uint4 conversion (#1893) ...

There appears to have been some confusion over `uint_mask` during the
initial reviews of the subgroup tests.  Add a comment to clarify the
purpose of the mask.

Use a 32-bit all-ones mask (`0xffffffff`) instead of a 64-bit all-ones
mask to further clarify the intent, that is, don't delay discarding
the upper 32 bits until the assignment but mask them out immediately.

Fixes https://github.com/KhronosGroup/OpenCL-CTS/issues/1203

Signed-off-by: Sven van Haastregt <sven.vanhaastregt@arm.com>

2024-04-04 15:12:10 +02:00

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