ir_to_mesa: Add support for dFdx, dFdy.

1 files changed, 8 insertions, 0 deletions

diff --git a/src/mesa/shader/ir_to_mesa.cpp b/src/mesa/shader/ir_to_mesa.cpp
index f04518175d..152cb1d9e5 100644
--- a/src/mesa/shader/ir_to_mesa.cpp
+++ b/src/mesa/shader/ir_to_mesa.cpp
@@ -628,6 +628,14 @@ ir_to_mesa_visitor::visit(ir_expression *ir)
    case ir_unop_cos:
       ir_to_mesa_emit_scalar_op1(ir, OPCODE_COS, result_dst, op[0]);
       break;
+
+   case ir_unop_dFdx:
+      ir_to_mesa_emit_op1(ir, OPCODE_DDX, result_dst, op[0]);
+      break;
+   case ir_unop_dFdy:
+      ir_to_mesa_emit_op1(ir, OPCODE_DDY, result_dst, op[0]);
+      break;
+
    case ir_binop_add:
       ir_to_mesa_emit_op2(ir, OPCODE_ADD, result_dst, op[0], op[1]);
       break;