From c9f470bde42ec8312218792d25b8cf9c9037bfb3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Pablo=20Delgado=20Kr=C3=A4mer?= <private@pablode.com>
Date: Sat, 21 Jun 2025 15:07:54 +0200
Subject: [PATCH] Add TBN inputs to gltf_normalmap

---
 libraries/bxdf/gltf_pbr.mtlx | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/libraries/bxdf/gltf_pbr.mtlx b/libraries/bxdf/gltf_pbr.mtlx
index 8dde49ca9e..86de06902b 100644
--- a/libraries/bxdf/gltf_pbr.mtlx
+++ b/libraries/bxdf/gltf_pbr.mtlx
@@ -653,6 +653,9 @@
     <input name="file" type="filename" uniform="true" value="" />
     <input name="default" type="vector3" value="0.5, 0.5, 1" />
     <input name="texcoord" type="vector2" defaultgeomprop="UV0" />
+    <input name="normal" type="vector3" defaultgeomprop="Nworld" />
+    <input name="tangent" type="vector3" defaultgeomprop="Tworld" />
+    <input name="bitangent" type="vector3" defaultgeomprop="Bworld" />
     <input name="pivot" type="vector2" value="0, 1" />
     <input name="scale" type="vector2" value="1, 1" />
     <input name="rotate" type="float" value="0" unit="degree" unittype="angle" uimin="0" uimax="360" />
@@ -674,6 +677,9 @@
     </image>
     <normalmap name="normalmap" type="vector3">
       <input name="in" type="vector3" nodename="image" />
+      <input name="normal" type="vector3" interfacename="normal" />
+      <input name="tangent" type="vector3" interfacename="tangent" />
+      <input name="bitangent" type="vector3" interfacename="bitangent" />
     </normalmap>
     <divide name="invert_scale" type="vector2">
       <input name="in1" type="vector2" value="1.0, 1.0" />