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-rw-r--r--src/glsl/ast_function.cpp18
1 files changed, 18 insertions, 0 deletions
diff --git a/src/glsl/ast_function.cpp b/src/glsl/ast_function.cpp
index cdb34cc6988..631b793c830 100644
--- a/src/glsl/ast_function.cpp
+++ b/src/glsl/ast_function.cpp
@@ -178,6 +178,24 @@ verify_parameter_modes(_mesa_glsl_parse_state *state,
return false;
}
+ /* Verify that shader_in parameters are shader inputs */
+ if (formal->data.must_be_shader_input) {
+ ir_variable *var = actual->variable_referenced();
+ if (var && var->data.mode != ir_var_shader_in) {
+ _mesa_glsl_error(&loc, state,
+ "parameter `%s` must be a shader input",
+ formal->name);
+ return false;
+ }
+
+ if (actual->ir_type == ir_type_swizzle) {
+ _mesa_glsl_error(&loc, state,
+ "parameter `%s` must not be swizzled",
+ formal->name);
+ return false;
+ }
+ }
+
/* Verify that 'out' and 'inout' actual parameters are lvalues. */
if (formal->data.mode == ir_var_function_out
|| formal->data.mode == ir_var_function_inout) {