glsl: Disallow embedded structure definitions

Continue to allow them in GLSL 1.10 because the spec allows it.
Generate an error in all other versions because the specs specifically
disallow it.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "9.2" <mesa-stable@lists.freedesktop.org>

1 files changed, 7 insertions, 0 deletions

diff --git a/src/glsl/glsl_parser_extras.h b/src/glsl/glsl_parser_extras.h
index b9ca4e3a4d6..440c15bb801 100644
--- a/src/glsl/glsl_parser_extras.h
+++ b/src/glsl/glsl_parser_extras.h
@@ -159,6 +159,13 @@ struct _mesa_glsl_parse_state {
    enum _mesa_glsl_parser_targets target;
 
    /**
+    * Number of nested struct_specifier levels
+    *
+    * Outside a struct_specifer, this is zero.
+    */
+   unsigned struct_specifier_depth;
+
+   /**
     * Default uniform layout qualifiers tracked during parsing.
     * Currently affects uniform blocks and uniform buffer variables in
     * those blocks.