From b913b0fa5ff8584d6c94433542d3f8a1fd3d17a8 Mon Sep 17 00:00:00 2001
From: Tom Fili <tom@cesium.com>
Date: Fri, 19 Jul 2019 13:07:34 -0400
Subject: [PATCH] Added a check to see if diffuse and alpha texture is the
 same.

---
 lib/loadMtl.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/loadMtl.js b/lib/loadMtl.js
index dc42545..1e55990 100644
--- a/lib/loadMtl.js
+++ b/lib/loadMtl.js
@@ -387,6 +387,10 @@ function createDiffuseAlphaTexture(diffuseTexture, alphaTexture, options) {
         return diffuseTexture;
     }
 
+    if (diffuseTexture.path === alphaTexture.path) {
+        return diffuseTexture;
+    }
+
     if (!defined(diffuseTexture.pixels) || !defined(alphaTexture.pixels)) {
         options.logger('Could not get decoded texture data for ' + diffuseTexture.path + ' or ' + alphaTexture.path + '. The material will be created without an alpha texture.');
         return diffuseTexture;