glsl: remove duplicate validation for index layout qualifier

The minimum value for index is validated in apply_explicit_location()
and we want to remove validation from the parser so we can add
compile time constant support.

Reviewed-by: Samuel Iglesias Gonsálvez <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 1 insertions, 7 deletions

diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
index d2d5058befe..a96b18087b8 100644
--- a/src/glsl/glsl_parser.yy
+++ b/src/glsl/glsl_parser.yy
@@ -1476,13 +1476,7 @@ layout_qualifier_id:
          }
 
          $$.flags.q.explicit_index = 1;
-
-         if ($3 >= 0) {
-            $$.index = $3;
-         } else {
-            _mesa_glsl_error(& @3, state, "invalid index %d specified", $3);
-            YYERROR;
-         }
+         $$.index = $3;
       }
 
       if ((state->has_420pack() ||