aco: handle GL_TEXTURE_RECTANGLE in tg4_integer_workarounds

Ported from LLVM side lower_gather4_integer().

Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26244>
1 file changed