3 files changed, 20 insertions, 0 deletions
diff --git a/src/compiler/glsl/glsl_parser.yy b/src/compiler/glsl/glsl_parser.yy
index bc2571b6844..fd1592beca0 100644
--- a/src/compiler/glsl/glsl_parser.yy
+++ b/src/compiler/glsl/glsl_parser.yy
@@ -897,6 +897,23 @@ parameter_declarator:
       $$->identifier = $2;
       state->symbols->add_variable(new(state) ir_variable(NULL, $2, ir_var_auto));
    }
+   | layout_qualifier type_specifier any_identifier
+   {
+      if (state->allow_layout_qualifier_on_function_parameter) {
+         void *ctx = state->linalloc;
+         $$ = new(ctx) ast_parameter_declarator();
+         $$->set_location_range(@2, @3);
+         $$->type = new(ctx) ast_fully_specified_type();
+         $$->type->set_location(@2);
+         $$->type->specifier = $2;
+         $$->identifier = $3;
+         state->symbols->add_variable(new(state) ir_variable(NULL, $3, ir_var_auto));
+      } else {
+         _mesa_glsl_error(&@1, state,
+                          "is is not allowed on function parameter");
+         YYERROR;
+      }
+   }
    | type_specifier any_identifier array_specifier
    {
       void *ctx = state->linalloc;
diff --git a/src/compiler/glsl/glsl_parser_extras.cpp b/src/compiler/glsl/glsl_parser_extras.cpp
index 21d41224440..1bdd7c4bf17 100644
--- a/src/compiler/glsl/glsl_parser_extras.cpp
+++ b/src/compiler/glsl/glsl_parser_extras.cpp
@@ -311,6 +311,8 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
       ctx->Const.AllowGLSLExtensionDirectiveMidShader;
    this->allow_builtin_variable_redeclaration =
       ctx->Const.AllowGLSLBuiltinVariableRedeclaration;
+   this->allow_layout_qualifier_on_function_parameter =
+      ctx->Const.AllowLayoutQualifiersOnFunctionParameters;
 
    this->cs_input_local_size_variable_specified = false;
 
diff --git a/src/compiler/glsl/glsl_parser_extras.h b/src/compiler/glsl/glsl_parser_extras.h
index e03b34d7d6c..966d848509c 100644
--- a/src/compiler/glsl/glsl_parser_extras.h
+++ b/src/compiler/glsl/glsl_parser_extras.h
@@ -868,6 +868,7 @@ struct _mesa_glsl_parse_state {
 
    bool allow_extension_directive_midshader;
    bool allow_builtin_variable_redeclaration;
+   bool allow_layout_qualifier_on_function_parameter;
 
    /**
     * Known subroutine type declarations.