+ "`in' interface block is not allowed for "
+ "a vertex shader\n");
+ } else if ((state->target == fragment_shader) && $1.flags.q.out) {
+ _mesa_glsl_error(& @1, state,
+ "`out' interface block is not allowed for "
+ "a fragment shader\n");
+ }
+
+ /* Since block arrays require names, and both features are added in
+ * the same language versions, we don't have to explicitly
+ * version-check both things.
+ */
+ if (block->instance_name != NULL) {
+ state->check_version(150, 300, & @1, "interface blocks with "
+ "an instance name are not allowed");
+ }
+
+ unsigned interface_type_mask;
+ struct ast_type_qualifier temp_type_qualifier;
+
+ /* Get a bitmask containing only the in/out/uniform flags, allowing us
+ * to ignore other irrelevant flags like interpolation qualifiers.
+ */
+ temp_type_qualifier.flags.i = 0;
+ temp_type_qualifier.flags.q.uniform = true;
+ temp_type_qualifier.flags.q.in = true;
+ temp_type_qualifier.flags.q.out = true;
+ interface_type_mask = temp_type_qualifier.flags.i;
+
+ /* Get the block's interface qualifier. The interface_qualifier
+ * production rule guarantees that only one bit will be set (and
+ * it will be in/out/uniform).
+ */
+ unsigned block_interface_qualifier = $1.flags.i;
+
+ block->layout.flags.i |= block_interface_qualifier;
+
+ foreach_list_typed (ast_declarator_list, member, link, &block->declarations) {
+ ast_type_qualifier& qualifier = member->type->qualifier;
+ if ((qualifier.flags.i & interface_type_mask) == 0) {
+ /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
+ * "If no optional qualifier is used in a member declaration, the
+ * qualifier of the variable is just in, out, or uniform as declared
+ * by interface-qualifier."
+ */
+ qualifier.flags.i |= block_interface_qualifier;
+ } else if ((qualifier.flags.i & interface_type_mask) !=
+ block_interface_qualifier) {
+ /* GLSLangSpec.1.50.11, 4.3.7 (Interface Blocks):
+ * "If optional qualifiers are used, they can include interpolation
+ * and storage qualifiers and they must declare an input, output,
+ * or uniform variable consistent with the interface qualifier of
+ * the block."
+ */
+ _mesa_glsl_error(& @1, state,
+ "uniform/in/out qualifier on "
+ "interface block member does not match "
+ "the interface block\n");
+ }