From 5f58f73845cb75b9a7af92709ca7c85574ff5755 Mon Sep 17 00:00:00 2001
From: Robert Beckebans <robert.beckebans@gmail.com>
Date: Mon, 20 Jun 2022 23:57:13 +0200
Subject: [PATCH] Fixed missing generation of tangent spaces for glTF files

---
 neo/renderer/Model_gltf.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/neo/renderer/Model_gltf.cpp b/neo/renderer/Model_gltf.cpp
index 431b1eca..7894c9e8 100644
--- a/neo/renderer/Model_gltf.cpp
+++ b/neo/renderer/Model_gltf.cpp
@@ -480,6 +480,9 @@ void idRenderModelGLTF::ProcessNode( gltfNode* modelNode, idMat4 trans, gltfData
 	{
 		ProcessNode( nodeList[child], curTrans, data );
 	}
+
+	// derive mikktspace tangents from normals
+	FinishSurfaces( true );
 }
 
 //constructs a renderModel from a gltfScene node found in the "models" scene of the given gltfFile.