From 6863b4ecd6c214a41926c53c896c447c0b1a94bd Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Sat, 17 Jul 2021 10:09:46 -0700
Subject: [PATCH] materials: small correction to specular computation.

---
 rtchallenge/src/materials.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtchallenge/src/materials.rs b/rtchallenge/src/materials.rs
index efb21d8..ee436d9 100644
--- a/rtchallenge/src/materials.rs
+++ b/rtchallenge/src/materials.rs
@@ -119,7 +119,7 @@ pub fn lighting(
         // from the eye.
         let reflectv = reflect(-lightv, normalv);
         let reflect_dot_eye = dot(reflectv, eyev);
-        let specular = if reflect_dot_eye < 0. {
+        let specular = if reflect_dot_eye <= 0. {
             BLACK
         } else {
             // Compute the specular contribution.