From: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Date: Thu, 3 Sep 2015 07:47:56 +0000 (+0200)
Subject: glsl: ignore default qualifier declarations when checking for duplicate layout qualifiers
X-Git-Tag: upstream/17.1.0~15857
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9c1f10b1bc548a00482a0b6b789c4cdb12f5302e;p=platform%2Fupstream%2Fmesa.git

glsl: ignore default qualifier declarations when checking for duplicate layout qualifiers

Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
---

diff --git a/src/glsl/ast.h b/src/glsl/ast.h
index d8c6cea..335f426 100644
--- a/src/glsl/ast.h
+++ b/src/glsl/ast.h
@@ -639,6 +639,9 @@ struct ast_type_qualifier {
     */
    glsl_base_type image_base_type;
 
+   /** Flag to know if this represents a default value for a qualifier */
+   bool is_default_qualifier;
+
    /**
     * Return true if and only if an interpolation qualifier is present.
     */
diff --git a/src/glsl/glsl_parser.yy b/src/glsl/glsl_parser.yy
index 4dd5384..42108a3 100644
--- a/src/glsl/glsl_parser.yy
+++ b/src/glsl/glsl_parser.yy
@@ -2599,7 +2599,8 @@ interface_block:
    {
       ast_interface_block *block = (ast_interface_block *) $2;
 
-      if (!state->has_420pack() && block->layout.has_layout()) {
+      if (!state->has_420pack() && block->layout.has_layout() &&
+          !block->layout.is_default_qualifier) {
          _mesa_glsl_error(&@1, state, "duplicate layout(...) qualifiers");
          YYERROR;
       }
@@ -2608,6 +2609,8 @@ interface_block:
          YYERROR;
       }
 
+      block->layout.is_default_qualifier = false;
+
       foreach_list_typed (ast_declarator_list, member, link, &block->declarations) {
          ast_type_qualifier& qualifier = member->type->qualifier;
          if (qualifier.flags.q.stream && qualifier.stream != block->layout.stream) {
diff --git a/src/glsl/glsl_parser_extras.cpp b/src/glsl/glsl_parser_extras.cpp
index dae5261..7d976c2 100644
--- a/src/glsl/glsl_parser_extras.cpp
+++ b/src/glsl/glsl_parser_extras.cpp
@@ -242,6 +242,7 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
    this->default_uniform_qualifier = new(this) ast_type_qualifier();
    this->default_uniform_qualifier->flags.q.shared = 1;
    this->default_uniform_qualifier->flags.q.column_major = 1;
+   this->default_uniform_qualifier->is_default_qualifier = true;
 
    this->fs_uses_gl_fragcoord = false;
    this->fs_redeclares_gl_fragcoord = false;