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-rw-r--r--src/glsl/ast_function.cpp29
1 files changed, 16 insertions, 13 deletions
diff --git a/src/glsl/ast_function.cpp b/src/glsl/ast_function.cpp
index 39401017b81..8bf0ba2a876 100644
--- a/src/glsl/ast_function.cpp
+++ b/src/glsl/ast_function.cpp
@@ -152,19 +152,22 @@ verify_parameter_modes(_mesa_glsl_parse_state *state,
return false;
}
- if (actual->variable_referenced()
- && actual->variable_referenced()->read_only) {
- _mesa_glsl_error(&loc, state,
- "function parameter '%s %s' references the "
- "read-only variable '%s'",
- mode, formal->name,
- actual->variable_referenced()->name);
- return false;
- } else if (!actual->is_lvalue()) {
- _mesa_glsl_error(&loc, state,
- "function parameter '%s %s' is not an lvalue",
- mode, formal->name);
- return false;
+ ir_variable *var = actual->variable_referenced();
+ if (var) {
+ if (var->read_only) {
+ _mesa_glsl_error(&loc, state,
+ "function parameter '%s %s' references the "
+ "read-only variable '%s'",
+ mode, formal->name,
+ actual->variable_referenced()->name);
+ return false;
+ } else if (!actual->is_lvalue()) {
+ _mesa_glsl_error(&loc, state,
+ "function parameter '%s %s' is not an lvalue",
+ mode, formal->name);
+ return false;
+ }
+ var->assigned = true;
}
}