From cb3b1423c0039cbfb9ac79d9e7a95cab9959f047 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Mon, 19 Dec 2011 23:02:53 +0000
Subject: [PATCH] align tangent and binormal too

---
 panda/src/egg2pg/eggLoader.cxx | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)

diff --git a/panda/src/egg2pg/eggLoader.cxx b/panda/src/egg2pg/eggLoader.cxx
index 0b739265b8..56895f2fe9 100644
--- a/panda/src/egg2pg/eggLoader.cxx
+++ b/panda/src/egg2pg/eggLoader.cxx
@@ -2271,12 +2271,20 @@ make_vertex_data(const EggRenderState *render_state,
   for (ni = tbn_names.begin(); ni != tbn_names.end(); ++ni) {
     string name = (*ni);
 
-    PT(InternalName) iname = InternalName::get_tangent_name(name);
-    array_format->add_column
-      (iname, 3, Geom::NT_stdfloat, Geom::C_vector);
-    iname = InternalName::get_binormal_name(name);
-    array_format->add_column
-      (iname, 3, Geom::NT_stdfloat, Geom::C_vector);
+    PT(InternalName) iname_t = InternalName::get_tangent_name(name);
+    PT(InternalName) iname_b = InternalName::get_binormal_name(name);
+
+    if (align_16) {
+      array_format->add_column
+        (iname_t, 4, Geom::NT_stdfloat, Geom::C_vector, -1, 16);
+      array_format->add_column
+        (iname_b, 4, Geom::NT_stdfloat, Geom::C_vector, -1, 16);
+    } else {
+      array_format->add_column
+        (iname_t, 3, Geom::NT_stdfloat, Geom::C_vector);
+      array_format->add_column
+        (iname_b, 3, Geom::NT_stdfloat, Geom::C_vector);
+    }
   }
 
   vector_string aux_names;