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diff --git a/indra/llprimitive/llgltfmaterial_templates.h b/indra/llprimitive/llgltfmaterial_templates.h
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+/**
+ * @file llgltfmaterial_templates.h
+ * @brief Material template definition
+ *
+ * $LicenseInfo:firstyear=2023&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2023, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+
+#pragma once
+
+#include "llgltfmaterial.h"
+
+// Use templates here as workaround for the different similar texture info classes in tinygltf
+// Includer must first include tiny_gltf.h with the desired flags
+
+template<typename T>
+std::string gltf_get_texture_image(const tinygltf::Model& model, const T& texture_info)
+{
+    const S32 texture_idx = texture_info.index;
+    if (texture_idx < 0 || texture_idx >= model.textures.size())
+    {
+        return "";
+    }
+    const tinygltf::Texture& texture = model.textures[texture_idx];
+
+    // Ignore texture.sampler for now
+
+    const S32 image_idx = texture.source;
+    if (image_idx < 0 || image_idx >= model.images.size())
+    {
+        return "";
+    }
+    const tinygltf::Image& image = model.images[image_idx];
+
+    return image.uri;
+}
+
+template<typename T>
+void LLGLTFMaterial::setFromTexture(const tinygltf::Model& model, const T& texture_info, TextureInfo texture_info_id)
+{
+    setFromTexture(model, texture_info, mTextureId[texture_info_id], mTextureTransform[texture_info_id]);
+    const std::string uri = gltf_get_texture_image(model, texture_info);
+}
+
+// static
+template<typename T>
+void LLGLTFMaterial::setFromTexture(const tinygltf::Model& model, const T& texture_info, LLUUID& texture_id, TextureTransform& transform)
+{
+    LL_PROFILE_ZONE_SCOPED;
+    const std::string uri = gltf_get_texture_image(model, texture_info);
+    texture_id.set(uri);
+
+    const tinygltf::Value::Object& extensions_object = texture_info.extensions;
+    const auto transform_it = extensions_object.find(GLTF_FILE_EXTENSION_TRANSFORM);
+    if (transform_it != extensions_object.end())
+    {
+        const tinygltf::Value& transform_json = std::get<1>(*transform_it);
+        if (transform_json.IsObject())
+        {
+            const tinygltf::Value::Object& transform_object = transform_json.Get<tinygltf::Value::Object>();
+            transform.mOffset = vec2FromJson(transform_object, GLTF_FILE_EXTENSION_TRANSFORM_OFFSET, getDefaultTextureOffset());
+            transform.mScale = vec2FromJson(transform_object, GLTF_FILE_EXTENSION_TRANSFORM_SCALE, getDefaultTextureScale());
+            transform.mRotation = floatFromJson(transform_object, GLTF_FILE_EXTENSION_TRANSFORM_ROTATION, getDefaultTextureRotation());
+        }
+    }
+}
+
+// static
+template<typename T>
+void LLGLTFMaterial::allocateTextureImage(tinygltf::Model& model, T& texture_info, const std::string& uri)
+{
+    const S32 image_idx = model.images.size();
+    model.images.emplace_back();
+    model.images[image_idx].uri = uri;
+
+    // The texture, not to be confused with the texture info
+    const S32 texture_idx = model.textures.size();
+    model.textures.emplace_back();
+    tinygltf::Texture& texture = model.textures[texture_idx];
+    texture.source = image_idx;
+
+    texture_info.index = texture_idx;
+}
+
+// static
+template<typename T>
+void LLGLTFMaterial::writeToTexture(tinygltf::Model& model, T& texture_info, TextureInfo texture_info_id, bool force_write) const
+{
+    writeToTexture(model, texture_info, mTextureId[texture_info_id], mTextureTransform[texture_info_id], force_write);
+}
+
+// static
+template<typename T>
+void LLGLTFMaterial::writeToTexture(tinygltf::Model& model, T& texture_info, const LLUUID& texture_id, const TextureTransform& transform, bool force_write)
+{
+    LL_PROFILE_ZONE_SCOPED;
+    const bool is_blank_transform = transform == sDefault.mTextureTransform[0];
+    // Check if this material matches all the fallback values, and if so, then
+    // skip including it to reduce material size
+    if (!force_write && texture_id.isNull() && is_blank_transform)
+    {
+        return;
+    }
+
+    // tinygltf will discard this texture info if there is no valid texture,
+    // causing potential loss of information for overrides, so ensure one is
+    // defined. -Cosmic,2023-01-30
+    allocateTextureImage(model, texture_info, texture_id.asString());
+
+    if (!is_blank_transform)
+    {
+        tinygltf::Value::Object transform_map;
+        transform_map[GLTF_FILE_EXTENSION_TRANSFORM_OFFSET] = tinygltf::Value(tinygltf::Value::Array({
+            tinygltf::Value(transform.mOffset.mV[VX]),
+            tinygltf::Value(transform.mOffset.mV[VY])
+        }));
+        transform_map[GLTF_FILE_EXTENSION_TRANSFORM_SCALE] = tinygltf::Value(tinygltf::Value::Array({
+            tinygltf::Value(transform.mScale.mV[VX]),
+            tinygltf::Value(transform.mScale.mV[VY])
+        }));
+        transform_map[GLTF_FILE_EXTENSION_TRANSFORM_ROTATION] = tinygltf::Value(transform.mRotation);
+        texture_info.extensions[GLTF_FILE_EXTENSION_TRANSFORM] = tinygltf::Value(transform_map);
+    }
+}