From 0191c661b5fbb32e527116c6445b8bd1d857bc3b Mon Sep 17 00:00:00 2001
From: Kim Kulling <kimkulling@users.noreply.github.com>
Date: Wed, 30 Sep 2020 20:39:26 +0200
Subject: [PATCH] fix division by  zero.

---
 code/AssetLib/Collada/ColladaLoader.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/code/AssetLib/Collada/ColladaLoader.cpp b/code/AssetLib/Collada/ColladaLoader.cpp
index 70ead25f6..ab17097ca 100644
--- a/code/AssetLib/Collada/ColladaLoader.cpp
+++ b/code/AssetLib/Collada/ColladaLoader.cpp
@@ -384,6 +384,9 @@ void ColladaLoader::BuildLightsForNode(const ColladaParser &pParser, const Colla
                 if (srcLight->mPenumbraAngle >= ASSIMP_COLLADA_LIGHT_ANGLE_NOT_SET * (1 - 1e-6f)) {
                     // Need to rely on falloff_exponent. I don't know how to interpret it, so I need to guess ....
                     // epsilon chosen to be 0.1
+                    if ( 0.0f == srcLight->mFalloffExponent ) {
+                        srcLight->mFalloffExponent = 1.0f;
+                    }
                     out->mAngleOuterCone = std::acos(std::pow(0.1f, 1.f / srcLight->mFalloffExponent)) +
                                            out->mAngleInnerCone;
                 } else {