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-rw-r--r--src/glsl/opt_constant_folding.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/glsl/opt_constant_folding.cpp b/src/glsl/opt_constant_folding.cpp
index d69ca75fe03..599b21525de 100644
--- a/src/glsl/opt_constant_folding.cpp
+++ b/src/glsl/opt_constant_folding.cpp
@@ -122,7 +122,7 @@ ir_constant_folding_visitor::visit_enter(ir_call *ir)
ir_rvalue *param_rval = (ir_rvalue *)iter.get();
ir_variable *sig_param = (ir_variable *)sig_iter.get();
- if (sig_param->mode == ir_var_in) {
+ if (sig_param->mode == ir_var_in || sig_param->mode == ir_var_const_in) {
ir_rvalue *new_param = param_rval;
handle_rvalue(&new_param);