When a rebase swizzle is provided and we call _mesa_swizzle_and_convert
after unpacking the source format we were always passing normalized=false.
We should pass true or false depending on the formats involved in the
conversion for the byte and float paths (the integer path cannot ever be
normalized).
Reviewed-by: Jason Ekstrand <jason.ekstrand@intel.com> Tested-by: Mark Janes <mark.a.janes@intel.com>