This can only be used if EXT_blend_func_extended is enabled
---
src/glsl/glsl_parser.yy | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
index 4636435..40e60e5 100644
--- a/src/glsl/glsl_parser.yy
+++ b/src/glsl/glsl_parser.yy
@@ -1463,6 +1463,11 @@ layout_qualifier_id:
}
if (match_layout_qualifier("index", $1, state) == 0) {
+ if (state->es_shader && !state->EXT_blend_func_extended_enable) {
+ _mesa_glsl_error(& @3, state, "index layout qualifier requires
EXT_blend_func_extended");
+ YYERROR;
+ }
+
$$.flags.q.explicit_index = 1;
if ($3 >= 0) {
--
2.5.0
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