From b7d638e53d03046527fe7323bf383c2ddb44d3c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Derzsi=20D=C3=A1niel?= <daniel@tohka.us>
Date: Tue, 18 Dec 2018 16:49:00 +0200
Subject: [PATCH] pgraph: fix BillboardEffect regression with older models

In older BAM files (version <= 6.42), _fixed_depth will have an uncertain value after loading, leading to incorrect transform calculations, which cause rendering issues (see issue #474)
---
 panda/src/pgraph/billboardEffect.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/panda/src/pgraph/billboardEffect.cxx b/panda/src/pgraph/billboardEffect.cxx
index d6319021f1..ff44e11202 100644
--- a/panda/src/pgraph/billboardEffect.cxx
+++ b/panda/src/pgraph/billboardEffect.cxx
@@ -375,5 +375,7 @@ fillin(DatagramIterator &scan, BamReader *manager) {
   if (manager->get_file_minor_ver() >= 43) {
     _look_at.fillin(scan, manager);
     _fixed_depth = scan.get_bool();
+  } else {
+    _fixed_depth = false;
   }
 }