[Mesa-dev] [PATCH 07/11] glsl: Merge UBO layout qualifiers in a qualifier list.
Eric Anholt
eric at anholt.net
Fri Jul 20 15:33:18 PDT 2012
Yes, you get to say things like "layout(row_major, column_major)" and
get column major.
Part of fixing piglit ARB_uniform_buffer_object/row_major.
---
src/glsl/glsl_parser.yy | 24 +++++++++++++++++++++++-
1 file changed, 23 insertions(+), 1 deletion(-)
diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
index 0ed424d..2787721 100644
--- a/src/glsl/glsl_parser.yy
+++ b/src/glsl/glsl_parser.yy
@@ -1106,13 +1106,35 @@ layout_qualifier_id_list:
layout_qualifier_id
| layout_qualifier_id_list ',' layout_qualifier_id
{
- if (($1.flags.i & $3.flags.i) != 0) {
+ ast_type_qualifier ubo_mat_mask;
+ ubo_mat_mask.flags.i = 0;
+ ubo_mat_mask.flags.q.row_major = 1;
+ ubo_mat_mask.flags.q.column_major = 1;
+
+ ast_type_qualifier ubo_layout_mask;
+ ubo_layout_mask.flags.i = 0;
+ ubo_layout_mask.flags.q.std140 = 1;
+ ubo_layout_mask.flags.q.packed = 1;
+ ubo_layout_mask.flags.q.shared = 1;
+
+ /* Uniform block layout qualifiers get to overwrite each
+ * other (rightmost having priority), while all other
+ * qualifiers currently don't allow duplicates.
+ */
+ if (($1.flags.i & $3.flags.i & ~(ubo_mat_mask.flags.i |
+ ubo_layout_mask.flags.i)) != 0) {
_mesa_glsl_error(& @3, state,
"duplicate layout qualifiers used\n");
YYERROR;
}
$$ = $1;
+
+ if (($3.flags.i & ubo_mat_mask.flags.i) != 0)
+ $$.flags.i &= ~ubo_mat_mask.flags.i;
+ if (($3.flags.i & ubo_layout_mask.flags.i) != 0)
+ $$.flags.i &= ~ubo_layout_mask.flags.i;
+
$$.flags.i |= $3.flags.i;
if ($3.flags.q.explicit_location)
--
1.7.10.4
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