From ba6d3c09f25a65ab0cb4f88cedf192a062aeaa4c Mon Sep 17 00:00:00 2001
From: Hirek <polomarket73@gmail.com>
Date: Sun, 18 Jan 2026 21:22:27 +0100
Subject: [PATCH] Fallback for zero diffuse

---
 Model3d.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Model3d.cpp b/Model3d.cpp
index 5d71caf3..4335f188 100644
--- a/Model3d.cpp
+++ b/Model3d.cpp
@@ -1916,7 +1916,7 @@ void TSubModel::deserialize(std::istream &s)
 	diffuseMultiplier = sn_utils::ld_float32(s);
 	// only multiply diffuse on experimental renderer
 	if (!Global.NvRenderer)
-		f4Diffuse /= diffuseMultiplier;
+		f4Diffuse /= diffuseMultiplier <= 0.0 ? 1.0 : diffuseMultiplier;
 
 	// necessary rotations were already done during t3d->e3d conversion
 	m_rotation_init_done = true;