From 9c8797ffd8941d0344e012c6b9a9a61f1a1fca26 Mon Sep 17 00:00:00 2001
From: Nathan Vegdahl <cessen@cessen.com>
Date: Thu, 7 Jul 2016 23:47:44 -0700
Subject: [PATCH] Forgot to do top-level ray splitting.

---
 src/tracer.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/tracer.rs b/src/tracer.rs
index 712ae41..e43777f 100644
--- a/src/tracer.rs
+++ b/src/tracer.rs
@@ -52,7 +52,11 @@ impl<'a> Tracer<'a> {
             // to them in their function parameters.
             &mut (*rays_ptr)[..]
         };
-        self.trace_assembly(self.root, wrays, ray_refs);
+
+        let mut ray_sets = split_rays_by_direction(&mut ray_refs[..]);
+        for ray_set in ray_sets.iter_mut().filter(|ray_set| ray_set.len() > 0) {
+            self.trace_assembly(self.root, wrays, ray_set);
+        }
 
         return &self.isects;
     }