aco: fix incorrect address calculation for load_barycentric_at_sample
Fix address calculation for indirect load_barycentric_at_sample on GFX6-8
with a uniform sample index.
A non-zero uniform sample index does not seem to be tested by CTS.
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Gitlab: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3966
Fixes: 93c8ebfa78
("aco: Initial commit of independent AMD compiler")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8302>
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@ -7661,7 +7661,7 @@ void visit_intrinsic(isel_context *ctx, nir_intrinsic_instr *instr)
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offset = bld.sop2(aco_opcode::s_lshl3_add_u32, bld.def(s1), bld.def(s1, scc), addr, Operand(sample_pos_offset));
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} else {
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offset = bld.sop2(aco_opcode::s_lshl_b32, bld.def(s1), bld.def(s1, scc), addr, Operand(3u));
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offset = bld.sop2(aco_opcode::s_add_u32, bld.def(s1), bld.def(s1, scc), addr, Operand(sample_pos_offset));
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offset = bld.sop2(aco_opcode::s_add_u32, bld.def(s1), bld.def(s1, scc), offset, Operand(sample_pos_offset));
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}
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Operand off = bld.copy(bld.def(s1), Operand(offset));
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