From df9bdfc6ea248200558f1f64961f558097e04b1a Mon Sep 17 00:00:00 2001
From: Robin Kertels <robin.kertels@gmail.com>
Date: Mon, 11 Mar 2024 19:12:20 +0100
Subject: [PATCH] [util] Return unchanged matrix if matrix cannot be inverted

---
 src/util/util_matrix.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/util/util_matrix.cpp b/src/util/util_matrix.cpp
index 2c5e93140..4b513d119 100644
--- a/src/util/util_matrix.cpp
+++ b/src/util/util_matrix.cpp
@@ -205,6 +205,10 @@ namespace dxvk {
     Vector4 dot0    = { m[0] * row0 };
     float dot1      = (dot0.x + dot0.y) + (dot0.z + dot0.w);
 
+    if (unlikely(std::abs(dot1) <= 0.000001f)) {
+      return m;
+    }
+
     return inverse * (1.0f / dot1);
   }