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-rw-r--r--src/glsl/ir.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/glsl/ir.h b/src/glsl/ir.h
index 500a8c7a006..0d5bbc20aa8 100644
--- a/src/glsl/ir.h
+++ b/src/glsl/ir.h
@@ -74,6 +74,7 @@ public:
virtual class ir_dereference * as_dereference() { return NULL; }
virtual class ir_dereference_array * as_dereference_array() { return NULL; }
virtual class ir_dereference_variable *as_dereference_variable() { return NULL; }
+ virtual class ir_expression * as_expression() { return NULL; }
virtual class ir_rvalue * as_rvalue() { return NULL; }
virtual class ir_loop * as_loop() { return NULL; }
virtual class ir_assignment * as_assignment() { return NULL; }
@@ -603,6 +604,11 @@ public:
ir_expression(int op, const struct glsl_type *type,
ir_rvalue *, ir_rvalue *);
+ virtual ir_expression *as_expression()
+ {
+ return this;
+ }
+
virtual ir_expression *clone(struct hash_table *ht) const;
static unsigned int get_num_operands(ir_expression_operation);