From 5c2d12dea380580ebd14feeea8c29856234761d0 Mon Sep 17 00:00:00 2001
From: aaronp64 <aaronp.code@gmail.com>
Date: Sun, 16 Nov 2025 10:52:36 -0500
Subject: [PATCH] Check if scale/offset values are provided in gltf
 KHR_texture_transform

Update GLTFDocument to check if scale/offset values exist when reading KHR_texture_transform extension
---
 modules/gltf/gltf_document.cpp | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/modules/gltf/gltf_document.cpp b/modules/gltf/gltf_document.cpp
index 6f9295c94b9..1a3957cd70e 100644
--- a/modules/gltf/gltf_document.cpp
+++ b/modules/gltf/gltf_document.cpp
@@ -3209,16 +3209,20 @@ void GLTFDocument::_set_texture_transform_uv1(const Dictionary &p_dict, Ref<Base
 		if (extensions.has("KHR_texture_transform")) {
 			if (p_material.is_valid()) {
 				const Dictionary &texture_transform = extensions["KHR_texture_transform"];
-				const Array &offset_arr = texture_transform["offset"];
-				if (offset_arr.size() == 2) {
-					const Vector3 offset_vector3 = Vector3(offset_arr[0], offset_arr[1], 0.0f);
-					p_material->set_uv1_offset(offset_vector3);
+				if (texture_transform.has("offset")) {
+					const Array offset_arr = texture_transform["offset"];
+					if (offset_arr.size() == 2) {
+						const Vector3 offset_vector3 = Vector3(offset_arr[0], offset_arr[1], 0.0f);
+						p_material->set_uv1_offset(offset_vector3);
+					}
 				}
 
-				const Array &scale_arr = texture_transform["scale"];
-				if (scale_arr.size() == 2) {
-					const Vector3 scale_vector3 = Vector3(scale_arr[0], scale_arr[1], 1.0f);
-					p_material->set_uv1_scale(scale_vector3);
+				if (texture_transform.has("scale")) {
+					const Array scale_arr = texture_transform["scale"];
+					if (scale_arr.size() == 2) {
+						const Vector3 scale_vector3 = Vector3(scale_arr[0], scale_arr[1], 1.0f);
+						p_material->set_uv1_scale(scale_vector3);
+					}
 				}
 			}
 		}