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-rw-r--r--src/mesa/drivers/dri/i965/brw_fs.cpp13
1 files changed, 8 insertions, 5 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_fs.cpp b/src/mesa/drivers/dri/i965/brw_fs.cpp
index 233fee47dc5..0d29c86ce2a 100644
--- a/src/mesa/drivers/dri/i965/brw_fs.cpp
+++ b/src/mesa/drivers/dri/i965/brw_fs.cpp
@@ -655,14 +655,17 @@ fs_visitor::visit(ir_expression *ir)
case ir_unop_sign:
temp = fs_reg(this, ir->type);
- inst = emit(fs_inst(BRW_OPCODE_CMP, this->result, op[0], fs_reg(0.0f)));
+ emit(fs_inst(BRW_OPCODE_MOV, this->result, fs_reg(0.0f)));
+
+ inst = emit(fs_inst(BRW_OPCODE_CMP, reg_null, op[0], fs_reg(0.0f)));
inst->conditional_mod = BRW_CONDITIONAL_G;
+ inst = emit(fs_inst(BRW_OPCODE_MOV, this->result, fs_reg(1.0f)));
+ inst->predicated = true;
- inst = emit(fs_inst(BRW_OPCODE_CMP, temp, op[0], fs_reg(0.0f)));
+ inst = emit(fs_inst(BRW_OPCODE_CMP, reg_null, op[0], fs_reg(0.0f)));
inst->conditional_mod = BRW_CONDITIONAL_L;
-
- temp.negate = true;
- emit(fs_inst(BRW_OPCODE_ADD, this->result, this->result, temp));
+ inst = emit(fs_inst(BRW_OPCODE_MOV, this->result, fs_reg(-1.0f)));
+ inst->predicated = true;
break;
case ir_unop_rcp: