glsl: fix stream qualifier for blocks with an instance name

This also removes the validation from the parser as it is not required
and once arb_enhanced_layouts comes along we wont be able to do validation
on the stream qualifier in the parser anyway as it adds constant expression
support to the stream qualifier.

Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Cc: 11.0 <mesa-stable@lists.freedesktop.org>

src/glsl/ast_to_hir.cpp

@@ -6293,6 +6293,18 @@ ast_interface_block::hir(exec_list *instructions,
 
    state->struct_specifier_depth--;
 
+   for (unsigned i = 0; i < num_variables; i++) {
+      if (fields[i].stream != -1 &&
+          (unsigned) fields[i].stream != this->layout.stream) {
+         _mesa_glsl_error(&loc, state,
+                          "stream layout qualifier on "
+                          "interface block member `%s' does not match "
+                          "the interface block (%d vs %d)",
+                          fields[i].name, fields[i].stream,
+                          this->layout.stream);
+      }
+   }
+
    if (!redeclaring_per_vertex) {
       validate_identifier(this->block_name, loc, state);
 
@@ -6633,6 +6645,8 @@ ast_interface_block::hir(exec_list *instructions,
          var->data.explicit_binding = this->layout.flags.q.explicit_binding;
          var->data.binding = this->layout.binding;
 
+         var->data.stream = this->layout.stream;
+
          state->symbols->add_variable(var);
          instructions->push_tail(var);
       }
@@ -6651,6 +6665,7 @@ ast_interface_block::hir(exec_list *instructions,
          var->data.centroid = fields[i].centroid;
          var->data.sample = fields[i].sample;
          var->data.patch = fields[i].patch;
+         var->data.stream = this->layout.stream;
          var->init_interface_type(block_type);
 
          if (var_mode == ir_var_shader_in || var_mode == ir_var_uniform)
@@ -6663,17 +6678,6 @@ ast_interface_block::hir(exec_list *instructions,
             var->data.matrix_layout = fields[i].matrix_layout;
          }
 
-         if (fields[i].stream != -1 &&
-             ((unsigned)fields[i].stream) != this->layout.stream) {
-            _mesa_glsl_error(&loc, state,
-                             "stream layout qualifier on "
-                             "interface block member `%s' does not match "
-                             "the interface block (%d vs %d)",
-                             var->name, fields[i].stream, this->layout.stream);
-         }
-
-         var->data.stream = this->layout.stream;
-
          if (var->data.mode == ir_var_shader_storage) {
             var->data.image_read_only = fields[i].image_read_only;
             var->data.image_write_only = fields[i].image_write_only;

src/glsl/glsl_parser.yy

@@ -2609,17 +2609,6 @@ interface_block:
 
       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) {
-               _mesa_glsl_error(& @1, state,
-                             "stream layout qualifier on "
-                             "interface block member does not match "
-                             "the interface block (%d vs %d)",
-                             qualifier.stream, block->layout.stream);
-               YYERROR;
-         }
-      }
       $$ = block;
    }
    | memory_qualifier interface_block

src/glsl/lower_named_interface_blocks.cpp

@@ -186,6 +186,7 @@ flatten_named_interface_blocks_declarations::run(exec_list *instructions)
             new_var->data.centroid = iface_t->fields.structure[i].centroid;
             new_var->data.sample = iface_t->fields.structure[i].sample;
             new_var->data.patch = iface_t->fields.structure[i].patch;
+            new_var->data.stream = var->data.stream;
 
             new_var->init_interface_type(iface_t);
             hash_table_insert(interface_namespace, new_var,