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diff --git a/Source/Graphics/model.h b/Source/Graphics/model.h
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+++ b/Source/Graphics/model.h
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+//-----------------------------------------------------------------------------
+//           Name: model.h
+//      Developer: Wolfire Games LLC
+//         Author: David Rosen
+//    Description: This class loads and displays models
+//        License: Read below
+//-----------------------------------------------------------------------------
+//
+//
+//   Copyright 2022 Wolfire Games LLC
+//
+//   Licensed under the Apache License, Version 2.0 (the "License");
+//   you may not use this file except in compliance with the License.
+//   You may obtain a copy of the License at
+//
+//       http://www.apache.org/licenses/LICENSE-2.0
+//
+//   Unless required by applicable law or agreed to in writing, software
+//   distributed under the License is distributed on an "AS IS" BASIS,
+//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//   See the License for the specific language governing permissions and
+//   limitations under the License.
+//
+//-----------------------------------------------------------------------------
+#pragma once
+
+#include "Math/vec2.h"
+#include "Math/mat3.h"
+
+#include "Graphics/vbocontainer.h"
+#include "Internal/filesystem.h"
+#include "Asset/Asset/image_sampler.h"
+
+#include <opengl.h>
+
+#include <vector>
+#include <stdio.h>
+#include <string>
+
+class Mesh;
+class DrawBatch;
+
+//-----------------------------------------------------------------------------
+// Class Definition
+//-----------------------------------------------------------------------------
+
+enum ModelFlags{
+    _MDL_CENTER = (1<<0),
+    _MDL_SIMPLE = (1<<1),
+    _MDL_FLIP_FACES = (1<<2),
+    _MDL_USE_TANGENT = (1<<3)
+};
+
+const unsigned short _model_cache_version = 41;
+const unsigned short _morph_cache_version = 3;
+
+class Model;
+class vec4;
+
+class Model {
+public:
+    std::vector<GLfloat> vertices;
+    std::vector<GLfloat> normals;
+    std::vector<GLfloat> tangents;
+    std::vector<GLfloat> bitangents;
+    std::vector<vec3> face_normals;
+    std::vector<GLfloat> tex_coords;
+    std::vector<GLfloat> tex_coords2;
+    std::vector<GLfloat> aux;
+    std::vector<GLuint> faces;
+
+    std::vector<vec4> bone_weights;
+    std::vector<vec4> bone_ids;
+    std::vector<std::vector<vec4> > transform_vec;
+    std::vector<vec2> tex_transform_vec;
+    std::vector<vec3> morph_transform_vec;
+
+    std::set<ImageSamplerRef> image_samplers;
+
+    vec3 min_coords, max_coords, center_coords;
+
+    bool vbo_loaded;
+    bool vbo_enabled;
+    unsigned short checksum;
+
+    VBOContainer    VBO_vertices;
+    VBOContainer    VBO_normals;
+    VBOContainer    VBO_tangents;
+    VBOContainer    VBO_bitangents;
+    VBOContainer    VBO_tex_coords;
+    VBOContainer    VBO_tex_coords2;
+    VBOContainer    VBO_aux;
+    VBOContainer    VBO_faces;
+
+    std::vector<int> optimize_vert_reorder;
+    std::vector<int> precollapse_vert_reorder;
+    int precollapse_num_vertices;
+
+    bool use_tangent;
+    vec3 old_center;
+
+    vec3 bounding_sphere_origin;
+    float bounding_sphere_radius;
+    
+    float texel_density;
+    float average_triangle_edge_length;
+
+    std::string path; //Source file. Primarily for debugging purposes.
+    ModID modsource_;
+
+    int lineCheckNoBackface(const vec3& p1,const vec3& p2, vec3* p, vec3 *normal=0) const;
+    int lineCheck(const vec3& p1,const vec3& p2, vec3* p, vec3 *normal=0, bool backface = true) const;
+    void LoadObj(const std::string &name, char flags = _MDL_CENTER, const std::string &alt_name = "", const PathFlags searchPaths = kAnyPath);
+    void RemoveDoubledTriangles();
+    void Draw();        
+    void DrawAltTexCoords();
+    void DrawToTextureCoords();
+    void SmoothNormals();        
+    void SmoothTangents();
+    void calcFaceNormals();      
+    void calcBoundingBox();
+    void calcBoundingSphere();
+    void CenterModel();
+    void calcNormals();
+    void calcTangents();
+    void calcNormals(bool smooth);
+    void createVBO();
+    void ResizeVertices(int size);
+    void ResizeFaces(int size);
+    void WriteToFile(FILE *file);
+    void ReadFromFile(FILE *file);
+    void CalcTexelDensity();
+    void CalcAverageTriangleEdge();
+    void Dispose();
+    bool LoadAuxFromImage(const std::string &image_path);
+
+    Model();
+    Model(const Model &copy);
+    Model& operator=( const Model &copy );
+
+    virtual ~Model();
+
+    void StartPreset();
+    void EndPreset();
+    void DrawPreset();
+    void CopyFacesFromModel( const Model &source_model, const std::vector<int> &faces );
+    void LoadObjMorph( const std::string &name, const std::string &base_name );
+    void CopyVertCollapse( const Model &source_model );
+    void RemoveDuplicatedVerts();
+    void OptimizeTriangleOrder();
+    void SortTrianglesBackToFront(const vec3 &camera);
+    void PrintACMR();
+    void OptimizeVertexOrder();
+    void SaveObj(std::string name);
+    void RemoveDegenerateTriangles();
+
+    const static int ERROR_MORE_THAN_ONE_OBJECT;
+    int SimpleLoadTriangleCutObj(const std::string &name_to_load);
+    const char* GetLoadErrorString(int err);
+};
+void CopyTexCoords2( Model &a, const Model& b );
+
+class Shaders;
+class Graphics;
+void DrawModelVerts(Model& model, const char* vert_attrib_str, Shaders* shaders, Graphics* graphics, int shader);