Implement dFdx, dFdy, and fwidth via new expression opcodes.

1 files changed, 8 insertions, 0 deletions

diff --git a/ir.h b/ir.h
index 78ea196ffb..ea4f549468 100644
--- a/ir.h
+++ b/ir.h
@@ -494,6 +494,14 @@ enum ir_expression_operation {
    ir_unop_cos,
    /*@}*/
 
+   /**
+    * \name Partial derivatives.
+    */
+   /*@{*/
+   ir_unop_dFdx,
+   ir_unop_dFdy,
+   /*@}*/
+
    ir_binop_add,
    ir_binop_sub,
    ir_binop_mul,