glsl/linker: attempt to match anonymous structures at link

This is my attempt at fixing at least one of the UE4 bugs with GL4.3.

If we are doing intrastage matching and hit anonymous structs, then
we should do a record comparison instead of using the names.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95005
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

1 files changed, 15 insertions, 9 deletions

diff --git a/src/compiler/glsl/link_varyings.cpp b/src/compiler/glsl/link_varyings.cpp
index 59ce1a2..1782a96 100644
--- a/src/compiler/glsl/link_varyings.cpp
+++ b/src/compiler/glsl/link_varyings.cpp
@@ -226,15 +226,21 @@ cross_validate_types_and_qualifiers(struct gl_shader_program *prog,
        *     fragment language."
        */
       if (!output->type->is_array() || !is_gl_identifier(output->name)) {
-         linker_error(prog,
-                      "%s shader output `%s' declared as type `%s', "
-                      "but %s shader input declared as type `%s'\n",
-                      _mesa_shader_stage_to_string(producer_stage),
-                      output->name,
-                      output->type->name,
-                      _mesa_shader_stage_to_string(consumer_stage),
-                      input->type->name);
-         return;
+         bool anon_matches = output->type->is_anonymous() &&
+            type_to_match->is_anonymous() &&
+            type_to_match->record_compare(output->type);
+
+         if (!anon_matches) {
+            linker_error(prog,
+                         "%s shader output `%s' declared as type `%s', "
+                         "but %s shader input declared as type `%s'\n",
+                         _mesa_shader_stage_to_string(producer_stage),
+                         output->name,
+                         output->type->name,
+                         _mesa_shader_stage_to_string(consumer_stage),
+                         input->type->name);
+            return;
+         }
       }
    }