diff options
| -rw-r--r-- | src/intel/compiler/brw_fs_nir.cpp | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/src/intel/compiler/brw_fs_nir.cpp b/src/intel/compiler/brw_fs_nir.cpp index ce350fc00b5..02ac92e62f1 100644 --- a/src/intel/compiler/brw_fs_nir.cpp +++ b/src/intel/compiler/brw_fs_nir.cpp @@ -834,11 +834,20 @@ fs_visitor::nir_emit_alu(const fs_builder &bld, nir_alu_instr *instr) case nir_op_fsign: { if (op[0].abs) { - /* Straightforward since the source can be assumed to be - * non-negative. + /* Straightforward since the source can be assumed to be either + * strictly >= 0 or strictly <= 0 depending on the setting of the + * negate flag. */ set_condmod(BRW_CONDITIONAL_NZ, bld.MOV(result, op[0])); - set_predicate(BRW_PREDICATE_NORMAL, bld.MOV(result, brw_imm_f(1.0f))); + + inst = (op[0].negate) + ? bld.MOV(result, brw_imm_f(-1.0f)) + : bld.MOV(result, brw_imm_f(1.0f)); + + set_predicate(BRW_PREDICATE_NORMAL, inst); + + if (instr->dest.saturate) + inst->saturate = true; } else if (type_sz(op[0].type) < 8) { /* AND(val, 0x80000000) gives the sign bit. |