prog_to_nir uses this for OPCODE_SUB.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/mesa/drivers/dri/i965/brw_fs_nir.cpp | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
index 69f296c..094303f 100644
--- a/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs_nir.cpp
@@ -905,6 +905,12 @@ fs_visitor::nir_emit_alu(nir_alu_instr *instr)
inst->saturate = instr->dest.saturate;
break;
+ case nir_op_fsub:
+ case nir_op_isub:
+ inst = emit(ADD(result, op[0], negate(op[1])));
+ inst->saturate = instr->dest.saturate;
+ break;
+
case nir_op_fmul:
inst = emit(MUL(result, op[0], op[1]));
inst->saturate = instr->dest.saturate;
--
2.3.3
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