From fa7a8df3aaa0c2a470b3a183d5e08da260657df3 Mon Sep 17 00:00:00 2001
From: marauder2k7 <ctrl-intelligence@live.co.uk>
Date: Fri, 27 Feb 2026 14:41:37 +0000
Subject: [PATCH] linux required changes

---
 Engine/source/math/impl/float3_impl.inl   |  4 ++--
 Engine/source/math/isa/sse41/float3.cpp   | 10 +++++++++-
 Engine/source/platformPOSIX/POSIXMath.cpp |  3 +++
 3 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/Engine/source/math/impl/float3_impl.inl b/Engine/source/math/impl/float3_impl.inl
index ddf9886d7..668e2c5d8 100644
--- a/Engine/source/math/impl/float3_impl.inl
+++ b/Engine/source/math/impl/float3_impl.inl
@@ -47,7 +47,7 @@ namespace math_backend::float3
    {
       f32x4 va = v_load3(a);
       f32x4 vb = v_load3(b);
-      f32x4 vr = v_div(va, vb);
+      f32x4 vr = v_div_fast(va, vb);
       v_store3(r, vr);
    }
 
@@ -56,7 +56,7 @@ namespace math_backend::float3
    {
       f32x4 va = v_load3(a);
       f32x4 vs = v_set1(s);
-      f32x4 vr = v_div(va, vs);
+      f32x4 vr = v_div_fast(va, vs);
       v_store3(r, vr);
    }
 
diff --git a/Engine/source/math/isa/sse41/float3.cpp b/Engine/source/math/isa/sse41/float3.cpp
index 52f675ab9..9a5e0be5c 100644
--- a/Engine/source/math/isa/sse41/float3.cpp
+++ b/Engine/source/math/isa/sse41/float3.cpp
@@ -28,8 +28,16 @@ namespace
    // Element-wise multiply
    inline f32x4 v_mul(f32x4 a, f32x4 b) { return _mm_mul_ps(a, b); }
 
+   // Element-wise divide fast (1/b)
+   inline f32x4 v_div_fast(f32x4 a, f32x4 b)
+   {
+      f32x4 rcp = _mm_rcp_ps(b);
+      // Optional refinement here
+      return _mm_mul_ps(a, rcp);
+   }
+
    // Element-wise divide
-   inline f32x4 v_div(f32x4 a, f32x4 b) { return _mm_div_ps(a, b); }
+   inline f32x4 v_div(f32x4 a, f32x4 b) { return v_div_fast(a, b); }
 
    // Element-wise add
    inline f32x4 v_add(f32x4 a, f32x4 b) { return _mm_add_ps(a, b); }
diff --git a/Engine/source/platformPOSIX/POSIXMath.cpp b/Engine/source/platformPOSIX/POSIXMath.cpp
index 8f21329a3..751df294e 100644
--- a/Engine/source/platformPOSIX/POSIXMath.cpp
+++ b/Engine/source/platformPOSIX/POSIXMath.cpp
@@ -27,6 +27,7 @@
 #include "math/mMath.h"
 #include "core/strings/stringFunctions.h"
 #include "console/engineAPI.h"
+#include "math/public/math_backend.h"
 
 extern void mInstallLibrary_C();
 extern void mInstallLibrary_ASM();
@@ -90,6 +91,8 @@ void Math::init(U32 properties)
    Con::printf("   Installing Standard C extensions");
    mInstallLibrary_C();
 
+   math_backend::install_from_cpu_flags(properties);
+
 #if defined(TORQUE_CPU_X32) || defined(TORQUE_CPU_X64)
    Con::printf("   Installing Assembly extensions");
    mInstallLibrary_ASM();