From f8cc929f9a07f63e01655cb4bd55f1d3a812e7af Mon Sep 17 00:00:00 2001
From: elsid <elsid.mail@gmail.com>
Date: Thu, 30 Mar 2023 21:41:40 +0200
Subject: [PATCH] Use approximate equality for btBvhTriangleMeshShape triangles

---
 .../nifloader/testbulletnifloader.cpp                 | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/apps/openmw_test_suite/nifloader/testbulletnifloader.cpp b/apps/openmw_test_suite/nifloader/testbulletnifloader.cpp
index 2804bbd31c..44c1ffb1e7 100644
--- a/apps/openmw_test_suite/nifloader/testbulletnifloader.cpp
+++ b/apps/openmw_test_suite/nifloader/testbulletnifloader.cpp
@@ -14,6 +14,7 @@
 #include <gtest/gtest.h>
 
 #include <algorithm>
+#include <span>
 #include <type_traits>
 
 namespace
@@ -62,6 +63,14 @@ namespace
         return isNear(lhs.getOrigin(), rhs.getOrigin()) && isNear(lhs.getBasis(), rhs.getBasis());
     }
 
+    bool isNear(std::span<const btVector3> lhs, std::span<const btVector3> rhs)
+    {
+        if (lhs.size() != rhs.size())
+            return false;
+        return std::equal(
+            lhs.begin(), lhs.end(), rhs.begin(), [](const btVector3& l, const btVector3& r) { return isNear(l, r); });
+    }
+
     struct WriteVec3f
     {
         osg::Vec3f mValue;
@@ -237,7 +246,7 @@ static bool operator==(const btBvhTriangleMeshShape& lhs, const btBvhTriangleMes
 {
     return isNear(lhs.getLocalScaling(), rhs.getLocalScaling())
         && lhs.usesQuantizedAabbCompression() == rhs.usesQuantizedAabbCompression()
-        && lhs.getOwnsBvh() == rhs.getOwnsBvh() && getTriangles(lhs) == getTriangles(rhs);
+        && lhs.getOwnsBvh() == rhs.getOwnsBvh() && isNear(getTriangles(lhs), getTriangles(rhs));
 }
 
 static bool operator==(const btCollisionShape& lhs, const btCollisionShape& rhs)