feat(model): 实现动画层数据序列化与纹理管理增强

- 添加 AnimationLayerData 类用于动画层的序列化支持- 增强 Model2D 的 addTexture 方法，添加空值检查和重复纹理处理
- 在 ModelData 中添加动画层序列化与反序列化逻辑
- 扩展 TextureData 结构以支持完整纹理参数和元数据- 改进纹理反序列化过程，添加错误处理和后备纹理创建- 更新模型测试用例以验证新功能和修复的问题
- 优化网格序列化逻辑，避免重复序列化相同网格- 添加日志记录支持以提高调试能力

重要
- 完全实现了模型的保存和加载（贴图待测试）

src/main/java/com/chuangzhou/vivid2D/render/model/Model2D.java

@@ -168,7 +168,23 @@ public class Model2D {
 
     // ==================== 纹理管理 ====================
     public void addTexture(Texture texture) {
-        textures.put(texture.getName(), texture);
+        if (texture == null) {
+            throw new IllegalArgumentException("Texture cannot be null");
+        }
+
+        String textureName = texture.getName();
+        if (textureName == null || textureName.trim().isEmpty()) {
+            throw new IllegalArgumentException("Texture name cannot be null or empty");
+        }
+
+        if (textures.containsKey(textureName)) {
+            Texture oldTexture = textures.get(textureName);
+            if (oldTexture != null && oldTexture != texture) {
+                oldTexture.dispose();
+            }
+        }
+
+        textures.put(textureName, texture);
     }
 
     public Texture getTexture(String name) {
@@ -291,6 +307,14 @@ public class Model2D {
         }
     }
 
+    /**
+     * 设置动画层列表（用于反序列化）
+     */
+    public void setAnimationLayers(List<AnimationLayer> animationLayers) {
+        this.animationLayers.clear();
+        this.animationLayers.addAll(animationLayers);
+    }
+
     /**
      * 保存模型到压缩文件
      */

src/main/java/com/chuangzhou/vivid2D/render/model/ModelData.java

@@ -2,6 +2,8 @@ package com.chuangzhou.vivid2D.render.model;
 
 import com.chuangzhou.vivid2D.render.model.util.*;
 import org.joml.Vector2f;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
 import java.io.*;
 import java.util.*;
@@ -15,6 +17,7 @@ import java.util.zip.GZIPOutputStream;
  * @author tzdwindows 7
  */
 public class ModelData implements Serializable {
+    private static Logger logger = LoggerFactory.getLogger(ModelData.class);
     private static final long serialVersionUID = 1L;
 
     // ==================== 模型元数据 ====================
@@ -32,6 +35,7 @@ public class ModelData implements Serializable {
     private List<TextureData> textures;
     private List<ParameterData> parameters;
     private List<AnimationData> animations;
+    private List<AnimationLayerData> animationLayers;
 
     // ==================== 模型设置 ====================
     private Vector2f pivotPoint;
@@ -56,6 +60,7 @@ public class ModelData implements Serializable {
         this.textures = new ArrayList<>();
         this.parameters = new ArrayList<>();
         this.animations = new ArrayList<>();
+        this.animationLayers = new ArrayList<>();
 
         this.pivotPoint = new Vector2f();
         this.unitsPerMeter = 100.0f; // 默认100单位/米
@@ -99,6 +104,9 @@ public class ModelData implements Serializable {
         // 序列化参数
         serializeParameters(model);
 
+        // 序列化动画层
+        serializeAnimationLayers(model);
+
         lastModifiedTime = System.currentTimeMillis();
     }
 
@@ -111,8 +119,22 @@ public class ModelData implements Serializable {
 
     private void serializeMeshes(Model2D model) {
         meshes.clear();
+
+        // 首先序列化模型级别的所有网格
         for (Mesh2D mesh : model.getMeshes()) {
-            meshes.add(new MeshData(mesh));
+            if (!meshExists(mesh.getName())) {
+                meshes.add(new MeshData(mesh));
+            }
+        }
+
+        // 然后序列化所有部件中的网格
+        for (ModelPart part : model.getParts()) {
+            for (Mesh2D mesh : part.getMeshes()) {
+                // 检查是否已经序列化过（避免重复）
+                if (!meshExists(mesh.getName())) {
+                    meshes.add(new MeshData(mesh));
+                }
+            }
         }
     }
 
@@ -130,6 +152,22 @@ public class ModelData implements Serializable {
         }
     }
 
+    private void serializeAnimationLayers(Model2D model) {
+        animationLayers.clear();
+        for (AnimationLayer layer : model.getAnimationLayers()) {
+            animationLayers.add(new AnimationLayerData(layer));
+        }
+    }
+
+    private void deserializeAnimationLayers(Model2D model) {
+        List<AnimationLayer> layers = new ArrayList<>();
+        for (AnimationLayerData layerData : animationLayers) {
+            AnimationLayer layer = layerData.toAnimationLayer();
+            layers.add(layer);
+        }
+        model.setAnimationLayers(layers);
+    }
+
     /**
      * 反序列化到Model2D对象
      */
@@ -147,6 +185,11 @@ public class ModelData implements Serializable {
         // 先创建所有纹理
         Map<String, Texture> textureMap = deserializeTextures();
 
+        // === 关键修复：将纹理添加到模型中 ===
+        for (Texture texture : textureMap.values()) {
+            model.addTexture(texture);
+        }
+
         // 然后创建所有网格（依赖纹理）
         Map<String, Mesh2D> meshMap = deserializeMeshes(textureMap);
 
@@ -156,32 +199,75 @@ public class ModelData implements Serializable {
         // 最后创建参数
         deserializeParameters(model);
 
+        // 创建动画层
+        deserializeAnimationLayers(model);
         return model;
     }
 
     private Map<String, Texture> deserializeTextures() {
         Map<String, Texture> textureMap = new HashMap<>();
+
         for (TextureData textureData : textures) {
-            Texture texture = textureData.toTexture();
-            textureMap.put(texture.getName(), texture);
+            try {
+
+                Texture texture = textureData.toTexture();
+
+                if (texture != null) {
+                    textureMap.put(texture.getName(), texture);
+                }
+            } catch (Exception e) {
+                logger.error("Error creating texture '{}': {}", textureData.name, e.getMessage());
+                e.printStackTrace();
+                Texture fallbackTexture = createFallbackTexture(textureData.name, textureData.width, textureData.height);
+                if (fallbackTexture != null) {
+                    textureMap.put(textureData.name, fallbackTexture);
+                }
+            }
         }
         return textureMap;
     }
 
+    /**
+     * 创建后备纹理
+     */
+    private Texture createFallbackTexture(String name, int width, int height) {
+        try {
+            int color;
+            if (name.contains("body")) {
+                color = 0xFFFF0000;
+            } else if (name.contains("head")) {
+                color = 0xFF00FF00;
+            } else if (name.contains("checker")) {
+                return Texture.createCheckerboard(name + "_fallback", width, height, 16, 0xFFFFFFFF, 0xFF0000FF);
+            } else {
+                color = 0xFF0000FF;
+            }
+            return Texture.createSolidColor(name + "_fallback", width, height, color);
+        } catch (Exception e) {
+            System.err.println("Failed to create fallback texture: " + e.getMessage());
+            return null;
+        }
+    }
+
     private Map<String, Mesh2D> deserializeMeshes(Map<String, Texture> textureMap) {
         Map<String, Mesh2D> meshMap = new HashMap<>();
         for (MeshData meshData : meshes) {
-            Mesh2D mesh = meshData.toMesh2D();
+            try {
+                Mesh2D mesh = meshData.toMesh2D();
 
-            // 设置纹理
-            if (meshData.textureName != null) {
-                Texture texture = textureMap.get(meshData.textureName);
-                if (texture != null) {
-                    mesh.setTexture(texture);
+                // 设置纹理
+                if (meshData.textureName != null) {
+                    Texture texture = textureMap.get(meshData.textureName);
+                    if (texture != null) {
+                        mesh.setTexture(texture);
+                    } else {
+                        logger.error("Texture not found for mesh '{}': {}", meshData.name, meshData.textureName);
+                    }
                 }
+                meshMap.put(mesh.getName(), mesh);
+            } catch (Exception e) {
+                logger.error("Error creating mesh '{}': {}", meshData.name, e.getMessage());
             }
-
-            meshMap.put(mesh.getName(), mesh);
         }
         return meshMap;
     }
@@ -368,7 +454,6 @@ public class ModelData implements Serializable {
         copy.creationTime = System.currentTimeMillis();
         copy.lastModifiedTime = copy.creationTime;
 
-        // 深拷贝集合
         for (PartData part : this.parts) {
             copy.parts.add(part.copy());
         }
@@ -384,6 +469,9 @@ public class ModelData implements Serializable {
         for (AnimationData anim : this.animations) {
             copy.animations.add(anim.copy());
         }
+        for (AnimationLayerData layer : this.animationLayers) {
+            copy.animationLayers.add(layer.copy());
+        }
 
         copy.pivotPoint = new Vector2f(this.pivotPoint);
         copy.unitsPerMeter = this.unitsPerMeter;
@@ -591,21 +679,368 @@ public class ModelData implements Serializable {
         public int width;
         public int height;
         public Texture.TextureFormat format;
+        public Texture.TextureFilter minFilter;
+        public Texture.TextureFilter magFilter;
+        public Texture.TextureWrap wrapS;
+        public Texture.TextureWrap wrapT;
+        public boolean mipmapsEnabled;
+        public Map<String, String> metadata;
 
-        public TextureData() {}
+        public TextureData() {
+            this.minFilter = Texture.TextureFilter.LINEAR;
+            this.magFilter = Texture.TextureFilter.LINEAR;
+            this.wrapS = Texture.TextureWrap.CLAMP_TO_EDGE;
+            this.wrapT = Texture.TextureWrap.CLAMP_TO_EDGE;
+            this.mipmapsEnabled = false;
+            this.metadata = new HashMap<>();
+        }
 
         public TextureData(Texture texture) {
+            this();
             this.name = texture.getName();
             this.width = texture.getWidth();
             this.height = texture.getHeight();
             this.format = texture.getFormat();
+            this.minFilter = texture.getMinFilter();
+            this.magFilter = texture.getMagFilter();
+            this.wrapS = texture.getWrapS();
+            this.wrapT = texture.getWrapT();
+            this.mipmapsEnabled = texture.isMipmapsEnabled();
+
+            if (texture.hasPixelData()) {
+                this.imageData = texture.getPixelData();
+                //System.out.println("Using cached pixel data for texture: " + texture.getName());
+            } else {
+                //System.out.println("No cached data for texture: " + texture.getName() + ", extracting from GPU");
+                this.imageData = extractTextureData(texture);
+            }
+        }
+
+        private byte[] extractFromTextureInternal(Texture texture) {
+            if (texture.hasPixelData()) {
+                return texture.getPixelData();
+            }
+            throw new RuntimeException("No OpenGL context and no internal pixel data available");
+        }
+
+        /**
+         * 从纹理提取图像数据
+         */
+        private byte[] extractTextureData(Texture texture) {
+            try {
+                // 确保有OpenGL上下文
+                if (!org.lwjgl.opengl.GL.getCapabilities().OpenGL45) {
+                    System.err.println("OpenGL context not available for texture extraction");
+                    // 尝试使用纹理的内部数据（如果有）
+                    return extractFromTextureInternal(texture);
+                }
+
+                java.nio.ByteBuffer pixelData = texture.extractTextureData();
+
+                if (pixelData == null || pixelData.remaining() == 0) {
+                    System.err.println("Texture data extraction returned null or empty buffer");
+                    throw new RuntimeException("Failed to extract texture data");
+                }
+
+                // 验证数据大小
+                int expectedSize = width * height * format.getComponents();
+                if (pixelData.remaining() != expectedSize) {
+                    System.err.println("Texture data size mismatch. Expected: " + expectedSize +
+                            ", Got: " + pixelData.remaining());
+                    throw new RuntimeException("Texture data size mismatch");
+                }
+
+                byte[] data = new byte[pixelData.remaining()];
+                pixelData.get(data);
+
+                // 释放Native Memory
+                org.lwjgl.system.MemoryUtil.memFree(pixelData);
+
+                return data;
+
+            } catch (Exception e) {
+                logger.error("Critical error extracting texture data: {}", e.getMessage());
+                throw new RuntimeException("Failed to extract texture data for serialization", e);
+            }
+        }
+
+        /**
+         * 创建占位符纹理数据
+         */
+        private byte[] createPlaceholderTextureData() {
+            int components = format.getComponents();
+            int dataSize = width * height * components;
+            byte[] data = new byte[dataSize];
+
+            // 创建简单的渐变纹理作为占位符
+            for (int y = 0; y < height; y++) {
+                for (int x = 0; x < width; x++) {
+                    int index = (y * width + x) * components;
+                    if (components >= 1) data[index] = (byte)((x * 255) / width);     // R
+                    if (components >= 2) data[index + 1] = (byte)((y * 255) / height); // G
+                    if (components >= 3) data[index + 2] = (byte)128;                  // B
+                    if (components >= 4) data[index + 3] = (byte)255;                  // A
+                }
+            }
+            return data;
         }
 
         public Texture toTexture() {
-            Texture texture = new Texture(name, width, height, format);
-            // 注意：这里需要处理imageData的加载
-            // 实际项目中可能需要从文件路径加载图像数据
-            return texture;
+            try {
+                Texture texture = null;
+
+                if (imageData != null && imageData.length > 0) {
+                    try {
+                        java.nio.ByteBuffer buffer = java.nio.ByteBuffer.allocateDirect(imageData.length);
+                        buffer.put(imageData);
+                        buffer.flip();
+
+                        texture = new Texture(name, width, height, format, buffer);
+                    } catch (Exception e) {
+                        logger.error("Failed to create texture from image data: {}", e.getMessage());
+                    }
+                }
+
+                // 如果从图像数据创建失败，尝试从文件创建
+                if (texture == null && filePath != null && !filePath.isEmpty()) {
+                    try {
+                        texture = loadTextureFromFile(filePath);
+                    } catch (Exception e) {
+                        logger.error("Failed to create texture from file: {}", e.getMessage());
+                    }
+                }
+
+                // 如果以上方法都失败，创建空纹理
+                if (texture == null) {
+                    try {
+                        texture = new Texture(name, width, height, format);
+                    } catch (Exception e) {
+                        logger.error("Failed to create empty texture: {}", e.getMessage());
+                        throw e;
+                    }
+                }
+
+                // 应用纹理参数
+                if (texture != null) {
+                    try {
+                        texture.setMinFilter(minFilter);
+                        texture.setMagFilter(magFilter);
+                        texture.setWrapS(wrapS);
+                        texture.setWrapT(wrapT);
+
+                        if (mipmapsEnabled) {
+                            texture.generateMipmaps();
+                        }
+                    } catch (Exception e) {
+                        logger.error("Failed to apply texture parameters: {}", e.getMessage());
+                    }
+                }
+
+                return texture;
+
+            } catch (Exception e) {
+                logger.error("Critical error in toTexture() for '{}': {}", name, e.getMessage());
+                e.printStackTrace();
+                return createSimpleFallbackTexture();
+            }
+        }
+
+        /**
+         * 创建简单的后备纹理
+         */
+        private Texture createSimpleFallbackTexture() {
+            try {
+                // 创建一个非常简单的纯色纹理
+                return Texture.createSolidColor(name + "_simple_fallback", 64, 64, 0xFFFFFF00); // 黄色
+            } catch (Exception e) {
+                logger.error("Even fallback texture creation failed: {}", e.getMessage());
+                return null;
+            }
+        }
+
+        /**
+         * 从文件加载纹理
+         */
+        private Texture loadTextureFromFile(String filePath) {
+            try {
+                // 使用Texture类的静态方法从文件加载
+                Texture texture = Texture.createFromFile(name, filePath);
+
+                // 应用保存的纹理参数
+                texture.setMinFilter(minFilter);
+                texture.setMagFilter(magFilter);
+                texture.setWrapS(wrapS);
+                texture.setWrapT(wrapT);
+
+                if (mipmapsEnabled) {
+                    texture.generateMipmaps();
+                }
+
+                return texture;
+
+            } catch (Exception e) {
+                logger.error("Failed to load texture from file: {} - {}", filePath, e.getMessage());
+                return createFallbackTexture();
+            }
+        }
+
+        /**
+         * 获取纹理数据的估计内存使用量（字节）
+         */
+        public long getEstimatedMemoryUsage() {
+            long baseMemory = (long) width * height * format.getComponents();
+
+            // 如果启用了mipmaps，加上mipmaps的内存
+            if (mipmapsEnabled) {
+                return baseMemory * 4L / 3L; // mipmaps大约增加1/3内存
+            }
+
+            return baseMemory;
+        }
+
+        /**
+         * 将纹理数据保存到图像文件
+         */
+        public boolean saveToFile(String filePath, String format) {
+            if (imageData == null) {
+                logger.error("No image data to save");
+                return false;
+            }
+
+            try {
+                // 创建临时纹理并保存
+                Texture tempTexture = this.toTexture();
+                boolean success = tempTexture.saveToFile(filePath, format);
+                tempTexture.dispose(); // 清理临时纹理
+                return success;
+
+            } catch (Exception e) {
+                logger.error("Failed to save texture data to file: {}", e.getMessage());
+                return false;
+            }
+        }
+
+        public boolean saveToFile(String filePath) {
+            return saveToFile(filePath, "png"); // 默认保存为PNG
+        }
+
+        /**
+         * 从文件路径创建纹理数据
+         */
+        public static TextureData fromFile(String name, String filePath) {
+            TextureData data = new TextureData();
+            data.name = name;
+            data.filePath = filePath;
+
+            // 预加载图像信息
+            try {
+                Texture.ImageInfo info = Texture.getImageInfo(filePath);
+                data.width = info.width;
+                data.height = info.height;
+                data.format = Texture.getTextureFormat(info.components);
+            } catch (Exception e) {
+                System.err.println("Failed to get image info: " + e.getMessage());
+                // 设置默认值
+                data.width = 64;
+                data.height = 64;
+                data.format = Texture.TextureFormat.RGBA;
+            }
+
+            return data;
+        }
+
+        /**
+         * 从内存数据创建纹理数据
+         */
+        public static TextureData fromMemory(String name, byte[] imageData, int width, int height, Texture.TextureFormat format) {
+            TextureData data = new TextureData();
+            data.name = name;
+            data.setImageData(imageData, width, height, format);
+            return data;
+        }
+
+        /**
+         * 验证纹理数据的完整性
+         */
+        public boolean validate() {
+            if (name == null || name.trim().isEmpty()) {
+                return false;
+            }
+
+            if (width <= 0 || height <= 0) {
+                return false;
+            }
+
+            if (format == null) {
+                return false;
+            }
+
+            // 检查图像数据大小是否匹配
+            if (imageData != null) {
+                int expectedSize = width * height * format.getComponents();
+                if (imageData.length != expectedSize) {
+                    System.err.println("Texture data size mismatch. Expected: " + expectedSize + ", Got: " + imageData.length);
+                    return false;
+                }
+            }
+
+            return true;
+        }
+
+        /**
+         * 创建后备纹理（当主要方法失败时使用）
+         */
+        private Texture createFallbackTexture() {
+            try {
+                // 创建一个棋盘格纹理作为后备
+                return Texture.createCheckerboard(
+                        name + "_fallback",
+                        Math.max(32, width),
+                        Math.max(32, height),
+                        8,
+                        0xFFFF0000,  // 红色
+                        0xFF0000FF   // 蓝色
+                );
+            } catch (Exception e) {
+                // 如果连后备纹理都创建失败，抛出异常
+                logger.error("Failed to create fallback texture: {}", e.getMessage());
+                throw new RuntimeException("Failed to create fallback texture", e);
+            }
+        }
+
+        /**
+         * 设置文件路径（用于从文件加载纹理）
+         */
+        public void setFilePath(String filePath) {
+            this.filePath = filePath;
+            // 清除imageData，因为我们将从文件加载
+            this.imageData = null;
+        }
+
+        /**
+         * 设置图像数据（用于从内存数据创建纹理）
+         */
+        public void setImageData(byte[] imageData, int width, int height, Texture.TextureFormat format) {
+            this.imageData = imageData;
+            this.width = width;
+            this.height = height;
+            this.format = format;
+            // 清除filePath，因为我们将使用内存数据
+            this.filePath = null;
+        }
+
+        /**
+         * 添加元数据
+         */
+        public void addMetadata(String key, String value) {
+            this.metadata.put(key, value);
+        }
+
+        /**
+         * 获取元数据
+         */
+        public String getMetadata(String key) {
+            return this.metadata.get(key);
         }
 
         public TextureData copy() {
@@ -616,8 +1051,25 @@ public class ModelData implements Serializable {
             copy.width = this.width;
             copy.height = this.height;
             copy.format = this.format;
+            copy.minFilter = this.minFilter;
+            copy.magFilter = this.magFilter;
+            copy.wrapS = this.wrapS;
+            copy.wrapT = this.wrapT;
+            copy.mipmapsEnabled = this.mipmapsEnabled;
+            copy.metadata = new HashMap<>(this.metadata);
             return copy;
         }
+
+        @Override
+        public String toString() {
+            return "TextureData{" +
+                    "name='" + name + '\'' +
+                    ", size=" + width + "x" + height +
+                    ", format=" + format +
+                    ", hasImageData=" + (imageData != null) +
+                    ", filePath=" + (filePath != null ? "'" + filePath + "'" : "null") +
+                    '}';
+        }
     }
 
     /**
@@ -750,6 +1202,11 @@ public class ModelData implements Serializable {
     public Map<String, String> getUserData() { return userData; }
     public void setUserData(Map<String, String> userData) { this.userData = userData; }
 
+    public List<AnimationLayerData> getAnimationLayers() { return animationLayers; }
+    public void setAnimationLayers(List<AnimationLayerData> animationLayers) {
+        this.animationLayers = animationLayers;
+    }
+
     // ==================== Object方法 ====================
 
     @Override

src/main/java/com/chuangzhou/vivid2D/render/model/util/AnimationLayerData.java

@@ -0,0 +1,167 @@
+package com.chuangzhou.vivid2D.render.model.util;
+
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 动画层数据
+ * @author tzdwindows 7
+ */
+public class AnimationLayerData implements Serializable {
+    private static final long serialVersionUID = 1L;
+
+    public String name;
+    public float weight;
+    public boolean enabled;
+    public AnimationLayer.BlendMode blendMode;
+    public int priority;
+    public float playbackSpeed;
+    public boolean looping;
+    public Map<String, AnimationTrackData> tracks;
+    public List<String> clipNames;
+
+    public AnimationLayerData() {
+        this.tracks = new HashMap<>();
+        this.clipNames = new ArrayList<>();
+    }
+
+    public AnimationLayerData(AnimationLayer layer) {
+        this();
+        this.name = layer.getName();
+        this.weight = layer.getWeight();
+        this.enabled = layer.isEnabled();
+        this.blendMode = layer.getBlendMode();
+        this.priority = layer.getPriority();
+        this.playbackSpeed = layer.getPlaybackSpeed();
+        this.looping = layer.isLooping();
+
+        // 序列化轨道
+        for (AnimationLayer.AnimationTrack track : layer.getTracks().values()) {
+            this.tracks.put(track.getParameterId(), new AnimationTrackData(track));
+        }
+
+        // 序列化剪辑名称（剪辑对象本身需要单独序列化）
+        for (AnimationClip clip : layer.getClips()) {
+            this.clipNames.add(clip.getName());
+        }
+    }
+
+    public AnimationLayer toAnimationLayer() {
+        AnimationLayer layer = new AnimationLayer(name, weight);
+        layer.setEnabled(enabled);
+        layer.setBlendMode(blendMode);
+        layer.setPriority(priority);
+        layer.setPlaybackSpeed(playbackSpeed);
+        layer.setLooping(looping);
+
+        // 反序列化轨道
+        for (AnimationTrackData trackData : tracks.values()) {
+            AnimationLayer.AnimationTrack track = trackData.toAnimationTrack();
+            layer.getTracks().put(track.getParameterId(), track);
+        }
+
+        // 注意：剪辑对象需要在外部设置
+
+        return layer;
+    }
+
+    public AnimationLayerData copy() {
+        AnimationLayerData copy = new AnimationLayerData();
+        copy.name = this.name;
+        copy.weight = this.weight;
+        copy.enabled = this.enabled;
+        copy.blendMode = this.blendMode;
+        copy.priority = this.priority;
+        copy.playbackSpeed = this.playbackSpeed;
+        copy.looping = this.looping;
+        copy.tracks = new HashMap<>();
+        for (Map.Entry<String, AnimationTrackData> entry : this.tracks.entrySet()) {
+            copy.tracks.put(entry.getKey(), entry.getValue().copy());
+        }
+        copy.clipNames = new ArrayList<>(this.clipNames);
+        return copy;
+    }
+
+    /**
+     * 动画轨道数据
+     */
+    public static class AnimationTrackData implements Serializable {
+        private static final long serialVersionUID = 1L;
+
+        public String parameterId;
+        public boolean enabled;
+        public AnimationLayer.InterpolationType interpolation;
+        public List<KeyframeData> keyframes;
+
+        public AnimationTrackData() {
+            this.keyframes = new ArrayList<>();
+        }
+
+        public AnimationTrackData(AnimationLayer.AnimationTrack track) {
+            this();
+            this.parameterId = track.getParameterId();
+            this.enabled = track.isEnabled();
+            this.interpolation = track.getInterpolation();
+
+            // 序列化关键帧
+            for (AnimationLayer.Keyframe keyframe : track.getKeyframes()) {
+                this.keyframes.add(new KeyframeData(keyframe));
+            }
+        }
+
+        public AnimationLayer.AnimationTrack toAnimationTrack() {
+            AnimationLayer.AnimationTrack track = new AnimationLayer.AnimationTrack(parameterId);
+            track.setEnabled(enabled);
+            track.setInterpolation(interpolation);
+
+            // 反序列化关键帧
+            for (KeyframeData kfData : keyframes) {
+                track.addKeyframe(kfData.time, kfData.value, kfData.interpolation);
+            }
+
+            return track;
+        }
+
+        public AnimationTrackData copy() {
+            AnimationTrackData copy = new AnimationTrackData();
+            copy.parameterId = this.parameterId;
+            copy.enabled = this.enabled;
+            copy.interpolation = this.interpolation;
+            copy.keyframes = new ArrayList<>();
+            for (KeyframeData kf : this.keyframes) {
+                copy.keyframes.add(kf.copy());
+            }
+            return copy;
+        }
+    }
+
+    /**
+     * 关键帧数据（重用现有的 KeyframeData）
+     */
+    public static class KeyframeData implements Serializable {
+        private static final long serialVersionUID = 1L;
+
+        public float time;
+        public float value;
+        public AnimationLayer.InterpolationType interpolation;
+
+        public KeyframeData() {}
+
+        public KeyframeData(AnimationLayer.Keyframe keyframe) {
+            this.time = keyframe.getTime();
+            this.value = keyframe.getValue();
+            this.interpolation = keyframe.getInterpolation();
+        }
+
+        public KeyframeData copy() {
+            KeyframeData copy = new KeyframeData();
+            copy.time = this.time;
+            copy.value = this.value;
+            copy.interpolation = this.interpolation;
+            return copy;
+        }
+    }
+}

src/main/java/com/chuangzhou/vivid2D/render/model/util/Texture.java

@@ -7,8 +7,11 @@ import org.lwjgl.opengl.GL13;
 import org.lwjgl.opengl.GL14;
 import org.lwjgl.opengl.GL30;
 import org.lwjgl.opengl.GL45;
+import org.lwjgl.stb.STBImage;
+import org.lwjgl.stb.STBImageWrite;
 import org.lwjgl.system.MemoryUtil;
 
+import java.io.File;
 import java.nio.ByteBuffer;
 import java.nio.FloatBuffer;
 import java.nio.IntBuffer;
@@ -46,6 +49,9 @@ public class Texture {
     private static final Map<String, Texture> TEXTURE_CACHE = new HashMap<>();
     private static boolean openGLChecked = false;
 
+    // ==================== 像素数据缓存支持 ====================
+    private byte[] pixelDataCache = null;
+
     // ==================== 枚举定义 ====================
 
     public enum TextureFormat {
@@ -124,6 +130,14 @@ public class Texture {
 
     // ==================== 构造器 ====================
 
+
+    // ==================== STB 图像加载 ====================
+
+    static {
+        STBImage.stbi_set_flip_vertically_on_load(true);
+    }
+
+
     public Texture(String name, int width, int height, TextureFormat format) {
         this(name, width, height, format, TextureType.UNSIGNED_BYTE);
     }
@@ -220,9 +234,27 @@ public class Texture {
         // 检查OpenGL错误
         checkGLError("glTexSubImage2D");
 
+        // 缓存像素数据
+        cachePixelDataFromBuffer(pixelData);
+
         unbind();
     }
 
+    /**
+     * 从ByteBuffer缓存像素数据
+     */
+    private void cachePixelDataFromBuffer(ByteBuffer buffer) {
+        try {
+            int originalPosition = buffer.position();
+            pixelDataCache = new byte[buffer.remaining()];
+            buffer.get(pixelDataCache);
+            buffer.position(originalPosition);
+        } catch (Exception e) {
+            System.err.println("Failed to cache pixel data from buffer: " + e.getMessage());
+            pixelDataCache = null;
+        }
+    }
+
     /**
      * 上传整数数组数据到纹理
      */
@@ -413,6 +445,8 @@ public class Texture {
                 System.err.println("Error disposing texture: " + e.getMessage());
             }
 
+            pixelDataCache = null;
+
             disposed = true;
             TEXTURE_CACHE.values().removeIf(texture -> texture.textureId == this.textureId);
         }
@@ -433,8 +467,9 @@ public class Texture {
     public static Texture createSolidColor(String name, int width, int height, int rgbaColor) {
         int[] pixels = new int[width * height];
         java.util.Arrays.fill(pixels, rgbaColor);
-
-        return new Texture(name, width, height, TextureFormat.RGBA, pixels);
+        Texture texture = new Texture(name, width, height, TextureFormat.RGBA, pixels);
+        texture.ensurePixelDataCached();
+        return texture;
     }
 
     /**
@@ -450,8 +485,9 @@ public class Texture {
                 pixels[y * width + x] = isColor1 ? color1 : color2;
             }
         }
-
-        return new Texture(name, width, height, TextureFormat.RGBA, pixels);
+        Texture texture = new Texture(name, width, height, TextureFormat.RGBA, pixels);
+        texture.ensurePixelDataCached();
+        return texture;
     }
 
     /**
@@ -462,6 +498,471 @@ public class Texture {
                 new Texture(name, width, height, format));
     }
 
+    /**
+     * 从文件系统加载图像数据
+     */
+    public static ImageData loadImageFromFile(String filePath) {
+        if (filePath == null || filePath.trim().isEmpty()) {
+            throw new IllegalArgumentException("File path cannot be null or empty");
+        }
+
+        File file = new File(filePath);
+        if (!file.exists()) {
+            throw new RuntimeException("Texture file not found: " + filePath);
+        }
+
+        IntBuffer width = MemoryUtil.memAllocInt(1);
+        IntBuffer height = MemoryUtil.memAllocInt(1);
+        IntBuffer components = MemoryUtil.memAllocInt(1);
+
+        try {
+            // 使用 STB 加载图像
+            ByteBuffer imageData = STBImage.stbi_load(filePath, width, height, components, 0);
+
+            if (imageData == null) {
+                String error = STBImage.stbi_failure_reason();
+                throw new RuntimeException("Failed to load image: " + filePath + " - " + error);
+            }
+
+            // 确定纹理格式
+            TextureFormat format = getTextureFormat(components.get(0));
+
+            return new ImageData(
+                    imageData,
+                    width.get(0),
+                    height.get(0),
+                    format,
+                    filePath
+            );
+
+        } finally {
+            MemoryUtil.memFree(width);
+            MemoryUtil.memFree(height);
+            MemoryUtil.memFree(components);
+        }
+    }
+
+    /**
+     * 从文件创建纹理
+     */
+    public static Texture createFromFile(String name, String filePath) {
+        return createFromFile(name, filePath, TextureFilter.LINEAR, TextureFilter.LINEAR);
+    }
+
+    public static Texture createFromFile(String name, String filePath, TextureFilter minFilter, TextureFilter magFilter) {
+        ImageData imageData = loadImageFromFile(filePath);
+
+        try {
+            // 创建纹理
+            Texture texture = new Texture(
+                    name,
+                    imageData.width,
+                    imageData.height,
+                    imageData.format
+            );
+
+            // 上传数据（这会自动缓存）
+            texture.uploadData(imageData.data);
+
+            // 设置纹理参数
+            texture.setMinFilter(minFilter);
+            texture.setMagFilter(magFilter);
+
+            // 如果是2的幂次方尺寸，生成mipmaps
+            if (texture.isPowerOfTwo(imageData.width) && texture.isPowerOfTwo(imageData.height)) {
+                texture.generateMipmaps();
+            }
+
+            return texture;
+
+        } finally {
+            // 释放STB图像数据
+            STBImage.stbi_image_free(imageData.data);
+        }
+    }
+
+    /**
+     * 从纹理提取图像数据
+     */
+    public ByteBuffer extractTextureData() {
+        if (disposed) {
+            throw new IllegalStateException("Cannot extract data from disposed texture");
+        }
+
+        bind(0);
+
+        try {
+            // 计算数据大小
+            int dataSize = width * height * format.getComponents();
+            ByteBuffer pixelData = MemoryUtil.memAlloc(dataSize);
+
+            // 从GPU读取纹理数据
+            GL11.glGetTexImage(GL11.GL_TEXTURE_2D, 0, format.getGLFormat(), type.getGLType(), pixelData);
+
+            // 检查OpenGL错误
+            checkGLError("glGetTexImage");
+
+            pixelData.flip();
+            return pixelData;
+
+        } finally {
+            unbind();
+        }
+    }
+
+    /**
+     * 将纹理保存到文件（支持PNG、JPG等格式）
+     */
+    public boolean saveToFile(String filePath) {
+        return saveToFile(filePath, "png");
+    }
+
+    public boolean saveToFile(String filePath, String format) {
+        if (disposed) {
+            throw new IllegalStateException("Cannot save disposed texture");
+        }
+
+        ByteBuffer pixelData = extractTextureData();
+
+        try {
+            // 根据格式保存图像
+            boolean success = false;
+            int components = this.format.getComponents(); // 使用纹理的格式组件数量
+            int stride = width * components; // 每行的字节数
+
+            switch (format.toLowerCase()) {
+                case "png":
+                    success = STBImageWrite.stbi_write_png(
+                            filePath, width, height, components, pixelData, stride
+                    );
+                    break;
+
+                case "jpg":
+                case "jpeg":
+                    success = STBImageWrite.stbi_write_jpg(
+                            filePath, width, height, components, pixelData, 90 // 质量 0-100
+                    );
+                    break;
+
+                case "bmp":
+                    success = STBImageWrite.stbi_write_bmp(filePath, width, height, components, pixelData);
+                    break;
+
+                case "tga":
+                    success = STBImageWrite.stbi_write_tga(filePath, width, height, components, pixelData);
+                    break;
+
+                default:
+                    throw new IllegalArgumentException("Unsupported image format: " + format);
+            }
+
+            if (!success) {
+                System.err.println("Failed to save texture to: " + filePath);
+                return false;
+            }
+
+            return true;
+
+        } finally {
+            MemoryUtil.memFree(pixelData);
+        }
+    }
+
+    /**
+     * 检查是否有可用的像素数据缓存
+     */
+    public boolean hasPixelData() {
+        return this.pixelDataCache != null && this.pixelDataCache.length > 0;
+    }
+
+    /**
+     * 获取内部像素数据缓存
+     */
+    public byte[] getPixelData() {
+        if (pixelDataCache == null) {
+            // 如果没有缓存，从GPU提取并缓存
+            cachePixelDataFromGPU();
+        }
+        return pixelDataCache != null ? pixelDataCache.clone() : null;
+    }
+
+    /**
+     * 设置像素数据缓存
+     */
+    public void setPixelData(byte[] pixelData) {
+        this.pixelDataCache = pixelData != null ? pixelData.clone() : null;
+    }
+
+    /**
+     * 从GPU提取像素数据并缓存
+     */
+    private void cachePixelDataFromGPU() {
+        if (disposed) {
+            return;
+        }
+
+        try {
+            ByteBuffer gpuData = extractTextureData();
+            if (gpuData != null && gpuData.remaining() > 0) {
+                pixelDataCache = new byte[gpuData.remaining()];
+                gpuData.get(pixelDataCache);
+                gpuData.rewind();
+                MemoryUtil.memFree(gpuData);
+            }
+        } catch (Exception e) {
+            System.err.println("Failed to cache pixel data from GPU: " + e.getMessage());
+            pixelDataCache = null;
+        }
+    }
+
+    /**
+     * 清除像素数据缓存
+     */
+    public void clearPixelDataCache() {
+        this.pixelDataCache = null;
+    }
+
+    /**
+     * 确保像素数据缓存可用（如果不存在则从GPU提取）
+     */
+    public void ensurePixelDataCached() {
+        if (!hasPixelData()) {
+            cachePixelDataFromGPU();
+        }
+    }
+
+    /**
+     * 获取像素数据缓存大小（字节）
+     */
+    public int getPixelDataCacheSize() {
+        return pixelDataCache != null ? pixelDataCache.length : 0;
+    }
+
+    /**
+     * 创建纹理的深拷贝（包括图像数据）
+     */
+    public Texture copy() {
+        return copy(this.name + "_copy");
+    }
+
+    public Texture copy(String newName) {
+        if (disposed) {
+            throw new IllegalStateException("Cannot copy disposed texture");
+        }
+
+        // 确保缓存数据可用
+        ensurePixelDataCached();
+
+        ByteBuffer pixelData = null;
+        try {
+            if (hasPixelData()) {
+                // 使用缓存数据创建新纹理
+                pixelData = MemoryUtil.memAlloc(pixelDataCache.length);
+                pixelData.put(pixelDataCache);
+                pixelData.flip();
+            } else {
+                // 回退到GPU提取
+                pixelData = extractTextureData();
+            }
+
+            // 创建新纹理
+            Texture copy = new Texture(newName, width, height, format, pixelData);
+
+            // 复制纹理参数
+            copy.setMinFilter(this.minFilter);
+            copy.setMagFilter(this.magFilter);
+            copy.setWrapS(this.wrapS);
+            copy.setWrapT(this.wrapT);
+
+            // 复制像素数据缓存
+            if (hasPixelData()) {
+                copy.setPixelData(this.pixelDataCache);
+            }
+
+            if (this.mipmapsEnabled) {
+                copy.generateMipmaps();
+            }
+
+            return copy;
+
+        } finally {
+            if (pixelData != null) {
+                MemoryUtil.memFree(pixelData);
+            }
+        }
+    }
+
+// ==================== 辅助方法和内部类 ====================
+
+    /**
+     * 根据组件数量确定纹理格式
+     */
+    public static TextureFormat getTextureFormat(int components) {
+        switch (components) {
+            case 1: return TextureFormat.RED;
+            case 2: return TextureFormat.RG;
+            case 3: return TextureFormat.RGB;
+            case 4: return TextureFormat.RGBA;
+            default:
+                throw new IllegalArgumentException("Unsupported number of components: " + components);
+        }
+    }
+
+    /**
+     * 图像数据容器类
+     */
+    public static class ImageData {
+        public final ByteBuffer data;
+        public final int width;
+        public final int height;
+        public final TextureFormat format;
+        public final String sourcePath;
+
+        public ImageData(ByteBuffer data, int width, int height, TextureFormat format, String sourcePath) {
+            this.data = data;
+            this.width = width;
+            this.height = height;
+            this.format = format;
+            this.sourcePath = sourcePath;
+        }
+
+        /**
+         * 创建图像数据的拷贝
+         */
+        public ImageData copy() {
+            ByteBuffer copyBuffer = MemoryUtil.memAlloc(data.capacity());
+            copyBuffer.put(data);
+            copyBuffer.flip();
+            data.rewind();
+
+            return new ImageData(copyBuffer, width, height, format, sourcePath);
+        }
+
+        /**
+         * 释放图像数据内存
+         */
+        public void free() {
+            if (data != null) {
+                STBImage.stbi_image_free(data);
+            }
+        }
+    }
+
+    /**
+     * 支持的图像格式检查
+     */
+    public static boolean isSupportedImageFormat(String filePath) {
+        if (filePath == null) return false;
+
+        String lowerPath = filePath.toLowerCase();
+        return lowerPath.endsWith(".png") ||
+                lowerPath.endsWith(".jpg") ||
+                lowerPath.endsWith(".jpeg") ||
+                lowerPath.endsWith(".bmp") ||
+                lowerPath.endsWith(".tga") ||
+                lowerPath.endsWith(".psd") ||
+                lowerPath.endsWith(".gif") ||
+                lowerPath.endsWith(".hdr") ||
+                lowerPath.endsWith(".pic");
+    }
+
+    /**
+     * 获取图像文件信息（不加载完整图像）
+     */
+    public static ImageInfo getImageInfo(String filePath) {
+        if (!isSupportedImageFormat(filePath)) {
+            throw new IllegalArgumentException("Unsupported image format: " + filePath);
+        }
+
+        IntBuffer width = MemoryUtil.memAllocInt(1);
+        IntBuffer height = MemoryUtil.memAllocInt(1);
+        IntBuffer components = MemoryUtil.memAllocInt(1);
+
+        try {
+            boolean success = STBImage.stbi_info(filePath, width, height, components);
+
+            if (!success) {
+                String error = STBImage.stbi_failure_reason();
+                throw new RuntimeException("Failed to get image info: " + filePath + " - " + error);
+            }
+
+            return new ImageInfo(
+                    width.get(0),
+                    height.get(0),
+                    components.get(0),
+                    filePath
+            );
+
+        } finally {
+            MemoryUtil.memFree(width);
+            MemoryUtil.memFree(height);
+            MemoryUtil.memFree(components);
+        }
+    }
+
+    /**
+     * 图像信息类
+     */
+    public static class ImageInfo {
+        public final int width;
+        public final int height;
+        public final int components;
+        public final String filePath;
+
+        public ImageInfo(int width, int height, int components, String filePath) {
+            this.width = width;
+            this.height = height;
+            this.components = components;
+            this.filePath = filePath;
+        }
+
+        @Override
+        public String toString() {
+            return String.format("ImageInfo{size=%dx%d, components=%d, path='%s'}",
+                    width, height, components, filePath);
+        }
+    }
+
+// ==================== 新的静态工厂方法 ====================
+
+    /**
+     * 从字节数组创建纹理
+     */
+    public static Texture createFromBytes(String name, byte[] imageData, TextureFilter minFilter, TextureFilter magFilter) {
+        ByteBuffer buffer = MemoryUtil.memAlloc(imageData.length);
+        buffer.put(imageData);
+        buffer.flip();
+
+        // 使用STB从内存加载图像
+        IntBuffer width = MemoryUtil.memAllocInt(1);
+        IntBuffer height = MemoryUtil.memAllocInt(1);
+        IntBuffer components = MemoryUtil.memAllocInt(1);
+
+        try {
+            ByteBuffer pixelData = STBImage.stbi_load_from_memory(buffer, width, height, components, 0);
+
+            if (pixelData == null) {
+                String error = STBImage.stbi_failure_reason();
+                throw new RuntimeException("Failed to load image from bytes: " + error);
+            }
+
+            TextureFormat format = getTextureFormat(components.get(0));
+            Texture texture = new Texture(name, width.get(0), height.get(0), format, pixelData);
+
+            texture.setMinFilter(minFilter);
+            texture.setMagFilter(magFilter);
+
+            STBImage.stbi_image_free(pixelData);
+            return texture;
+
+        } finally {
+            MemoryUtil.memFree(buffer);
+            MemoryUtil.memFree(width);
+            MemoryUtil.memFree(height);
+            MemoryUtil.memFree(components);
+        }
+    }
+
     // ==================== 工具方法 ====================
 
     /**

src/main/java/com/chuangzhou/vivid2D/test/ModelRenderTest.java

@@ -18,9 +18,8 @@ import java.util.Random;
  * 重写后的 ModelRender 测试示例：构造一个简单的人形（头、身体、左右手、左右腿）
  * 便于验证层级变换与渲染是否正确。
  *
- * 注意：依赖你工程里已有的 Model2D / ModelPart / Mesh2D / Texture API。
  *
- * @author tzdwindows 7（改）
+ * @author tzdwindows 7
  */
 public class ModelRenderTest {
 

src/main/java/com/chuangzhou/vivid2D/test/ModelTest.java

@@ -0,0 +1,601 @@
+package com.chuangzhou.vivid2D.test;
+
+import com.chuangzhou.vivid2D.render.model.Model2D;
+import com.chuangzhou.vivid2D.render.model.ModelPart;
+import com.chuangzhou.vivid2D.render.model.AnimationParameter;
+import com.chuangzhou.vivid2D.render.model.util.Mesh2D;
+import com.chuangzhou.vivid2D.render.model.util.AnimationLayer;
+import com.chuangzhou.vivid2D.render.model.util.PhysicsSystem;
+import com.chuangzhou.vivid2D.render.model.util.ModelPose;
+import com.chuangzhou.vivid2D.render.model.util.BoundingBox;
+import com.chuangzhou.vivid2D.render.model.util.Texture;
+import org.joml.Vector2f;
+import org.lwjgl.glfw.GLFW;
+import org.lwjgl.glfw.GLFWErrorCallback;
+import org.lwjgl.opengl.GL;
+import org.lwjgl.system.MemoryUtil;
+
+/**
+ * 用于测试Model2D模型的保存和加载功能
+ *
+ * @author tzdwindows 7
+ */
+public class ModelTest {
+
+    private static long window;
+    private static boolean glInitialized = false;
+
+    public static void main(String[] args) {
+        System.out.println("=== Model2D Extended Save and Load Test Start ===");
+
+        try {
+            // Initialize OpenGL context for texture testing
+            initializeOpenGL();
+
+            // Test 1: Create model and save (with texture)
+            testCreateAndSaveModelWithTexture();
+
+            // Test 2: Load model and verify data including textures
+            testLoadAndVerifyModelWithTexture();
+
+            // Test 3: Test compressed file operations with textures
+            testCompressedFileOperationsWithTexture();
+
+            // Other existing tests...
+            testAnimationSystem();
+            testPhysicsSystem();
+            testComplexTransformations();
+            testPerformance();
+
+        } finally {
+            // Cleanup OpenGL
+            cleanupOpenGL();
+        }
+
+        System.out.println("=== Model2D Extended Save and Load Test Complete ===");
+    }
+
+    /**
+     * Initialize OpenGL context for texture testing
+     */
+    private static void initializeOpenGL() {
+        try {
+            // Setup error callback
+            GLFWErrorCallback.createPrint(System.err).set();
+
+            // Initialize GLFW
+            if (!GLFW.glfwInit()) {
+                throw new IllegalStateException("Unable to initialize GLFW");
+            }
+
+            // Configure GLFW
+            GLFW.glfwDefaultWindowHints();
+            GLFW.glfwWindowHint(GLFW.GLFW_VISIBLE, GLFW.GLFW_FALSE); // Hide window
+            GLFW.glfwWindowHint(GLFW.GLFW_RESIZABLE, GLFW.GLFW_FALSE);
+
+            // Create window
+            window = GLFW.glfwCreateWindow(100, 100, "Texture Test", MemoryUtil.NULL, MemoryUtil.NULL);
+            if (window == MemoryUtil.NULL) {
+                throw new RuntimeException("Failed to create GLFW window");
+            }
+
+            // Make OpenGL context current
+            GLFW.glfwMakeContextCurrent(window);
+            GLFW.glfwSwapInterval(1); // Enable v-sync
+
+            // Initialize OpenGL capabilities
+            GL.createCapabilities();
+
+            System.out.println("OpenGL initialized successfully");
+            System.out.println("OpenGL Version: " + org.lwjgl.opengl.GL11.glGetString(org.lwjgl.opengl.GL11.GL_VERSION));
+            glInitialized = true;
+
+        } catch (Exception e) {
+            System.err.println("Failed to initialize OpenGL: " + e.getMessage());
+            // Continue without OpenGL for other tests
+        }
+    }
+
+    /**
+     * Cleanup OpenGL resources
+     */
+    private static void cleanupOpenGL() {
+        if (window != MemoryUtil.NULL) {
+            GLFW.glfwDestroyWindow(window);
+        }
+        GLFW.glfwTerminate();
+        GLFW.glfwSetErrorCallback(null).free();
+    }
+
+    /**
+     * Test 1: Create model with textures and save to file
+     */
+    public static void testCreateAndSaveModelWithTexture() {
+        System.out.println("\n--- Test 1: Create and Save Model with Textures ---");
+
+        if (!glInitialized) {
+            System.out.println("Skipping texture test - OpenGL not available");
+            return;
+        }
+
+        try {
+            // Create model
+            Model2D model = new Model2D("textured_character");
+            model.setVersion("1.0.0");
+
+            // Create parts
+            ModelPart body = model.createPart("body");
+            ModelPart head = model.createPart("head");
+
+            // Build hierarchy
+            body.addChild(head);
+
+            // Set part properties
+            body.setPosition(0, 0);
+            head.setPosition(0, -50);
+
+            // Create test textures
+            System.out.println("Creating test textures...");
+
+            // Create solid color texture
+            Texture bodyTexture = Texture.createSolidColor("body_texture", 64, 64, 0xFFFF0000); // Red
+            Texture headTexture = Texture.createSolidColor("head_texture", 64, 64, 0xFF00FF00); // Green
+
+            // Create checkerboard texture
+            Texture checkerTexture = Texture.createCheckerboard("checker_texture", 128, 128, 16,
+                    0xFFFFFFFF, 0xFF0000FF); // White and Blue
+
+            // === 关键修复：确保纹理数据被缓存 ===
+            System.out.println("Ensuring texture data is cached...");
+            bodyTexture.ensurePixelDataCached();
+            headTexture.ensurePixelDataCached();
+            checkerTexture.ensurePixelDataCached();
+
+            // 验证缓存状态
+            System.out.println("Texture cache status:");
+            System.out.println(" - body_texture: " + (bodyTexture.hasPixelData() ? "CACHED" : "MISSING"));
+            System.out.println(" - head_texture: " + (headTexture.hasPixelData() ? "CACHED" : "MISSING"));
+            System.out.println(" - checker_texture: " + (checkerTexture.hasPixelData() ? "CACHED" : "MISSING"));
+
+            // Add textures to model
+            model.addTexture(bodyTexture);
+            model.addTexture(headTexture);
+            model.addTexture(checkerTexture);
+
+            // Create meshes and assign textures
+            Mesh2D bodyMesh = Mesh2D.createQuad("body_mesh", 40, 80);
+            Mesh2D headMesh = Mesh2D.createQuad("head_mesh", 50, 50);
+
+            // Set textures for meshes
+            bodyMesh.setTexture(bodyTexture);
+            headMesh.setTexture(headTexture);
+
+            // Add meshes to model and parts
+            model.addMesh(bodyMesh);
+            model.addMesh(headMesh);
+            body.addMesh(bodyMesh);
+            head.addMesh(headMesh);
+
+            // Create animation parameters
+            AnimationParameter smileParam = model.createParameter("smile", 0, 1, 0);
+            model.setParameterValue("smile", 0.5f);
+
+            // Update model
+            model.update(0.016f);
+
+            // Save to regular file
+            String regularFilePath = "textured_character.model";
+            model.saveToFile(regularFilePath);
+            System.out.println("Textured model saved to regular file: " + regularFilePath);
+
+            // Save to compressed file
+            String compressedFilePath = "textured_character.model.gz";
+            model.saveToCompressedFile(compressedFilePath);
+            System.out.println("Textured model saved to compressed file: " + compressedFilePath);
+
+            // Verify model state before saving
+            System.out.println("Textured model created successfully:");
+            System.out.println(" - Name: " + model.getName());
+            System.out.println(" - Textures: " + model.getTextures().size());
+            System.out.println(" - Meshes: " + model.getMeshes().size());
+
+            // Print texture information
+            for (Texture texture : model.getTextures().values()) {
+                System.out.println(" - Texture: " + texture.getName() +
+                        " (" + texture.getWidth() + "x" + texture.getHeight() +
+                        ", format: " + texture.getFormat() +
+                        ", cached: " + texture.hasPixelData() + ")");
+            }
+
+        } catch (Exception e) {
+            System.err.println("Error in testCreateAndSaveModelWithTexture: " + e.getMessage());
+            e.printStackTrace();
+
+            // 提供更详细的错误信息
+            if (e.getCause() != null) {
+                System.err.println("Caused by: " + e.getCause().getMessage());
+            }
+        }
+    }
+
+    /**
+     * Test 2: Load model with textures and verify data integrity
+     */
+    public static void testLoadAndVerifyModelWithTexture() {
+        System.out.println("\n--- Test 2: Load and Verify Model with Textures ---");
+
+        if (!glInitialized) {
+            System.out.println("Skipping texture test - OpenGL not available");
+            return;
+        }
+
+        try {
+            // Load from regular file
+            String filePath = "textured_character.model";
+            Model2D loadedModel = Model2D.loadFromFile(filePath);
+
+            System.out.println("Textured model loaded successfully from: " + filePath);
+
+            // Verify basic properties
+            System.out.println("Basic properties:");
+            System.out.println(" - Name: " + loadedModel.getName());
+            System.out.println(" - Version: " + loadedModel.getVersion());
+
+            // Verify textures
+            System.out.println("Textures verification:");
+            System.out.println(" - Total textures: " + loadedModel.getTextures().size());
+
+            for (Texture texture : loadedModel.getTextures().values()) {
+                System.out.println(" - Texture '" + texture.getName() + "': " +
+                        texture.getWidth() + "x" + texture.getHeight() +
+                        ", format: " + texture.getFormat() +
+                        ", disposed: " + texture.isDisposed());
+            }
+
+            // Verify parts and meshes
+            System.out.println("Parts and meshes verification:");
+            for (ModelPart part : loadedModel.getParts()) {
+                System.out.println(" - Part '" + part.getName() + "': " +
+                        part.getMeshes().size() + " meshes");
+
+                for (Mesh2D mesh : part.getMeshes()) {
+                    Texture meshTexture = mesh.getTexture();
+                    System.out.println("   * Mesh '" + mesh.getName() + "': " +
+                            (meshTexture != null ? "has texture '" + meshTexture.getName() + "'" : "no texture"));
+                }
+            }
+
+            // Test texture functionality
+            System.out.println("Texture functionality test:");
+            Texture bodyTexture = loadedModel.getTexture("body_texture");
+            if (bodyTexture != null) {
+                System.out.println(" - Body texture validation:");
+                System.out.println("   * Width: " + bodyTexture.getWidth());
+                System.out.println("   * Height: " + bodyTexture.getHeight());
+                System.out.println("   * Format: " + bodyTexture.getFormat());
+                System.out.println("   * Memory usage: " + bodyTexture.getEstimatedMemoryUsage() + " bytes");
+
+                // Test texture binding (if OpenGL context is available)
+                try {
+                    bodyTexture.bind(0);
+                    System.out.println("   * Texture binding: SUCCESS");
+                    bodyTexture.unbind();
+                } catch (Exception e) {
+                    System.out.println("   * Texture binding: FAILED - " + e.getMessage());
+                }
+            }
+
+            // Test parameter modification
+            System.out.println("Parameter modification test:");
+            loadedModel.setParameterValue("smile", 0.8f);
+            float newSmileValue = loadedModel.getParameterValue("smile");
+            System.out.println(" - Modified smile parameter to: " + newSmileValue);
+
+            // Test model update
+            loadedModel.update(0.016f);
+            System.out.println(" - Model update completed successfully");
+
+        } catch (Exception e) {
+            System.err.println("Error in testLoadAndVerifyModelWithTexture: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Test 3: Test compressed file operations with textures
+     */
+    public static void testCompressedFileOperationsWithTexture() {
+        System.out.println("\n--- Test 3: Compressed File Operations with Textures ---");
+
+        if (!glInitialized) {
+            System.out.println("Skipping texture test - OpenGL not available");
+            return;
+        }
+
+        try {
+            // Load from compressed file
+            String compressedFilePath = "textured_character.model.gz";
+            Model2D compressedModel = Model2D.loadFromCompressedFile(compressedFilePath);
+
+            System.out.println("Textured model loaded successfully from compressed file: " + compressedFilePath);
+            System.out.println(" - Name: " + compressedModel.getName());
+            System.out.println(" - Textures: " + compressedModel.getTextures().size());
+            System.out.println(" - Parts: " + compressedModel.getParts().size());
+
+            // Verify textures in compressed model
+            System.out.println("Compressed model texture verification:");
+            for (Texture texture : compressedModel.getTextures().values()) {
+                System.out.println(" - Texture '" + texture.getName() + "': " +
+                        texture.getWidth() + "x" + texture.getHeight());
+            }
+
+            // Modify and re-save
+            compressedModel.setName("modified_textured_character");
+            compressedModel.setParameterValue("smile", 0.9f);
+
+            String newCompressedPath = "modified_textured_character.model.gz";
+            compressedModel.saveToCompressedFile(newCompressedPath);
+            System.out.println("Modified textured model saved to new compressed file: " + newCompressedPath);
+
+            // Verify the new compressed file can be loaded
+            Model2D reloadedModel = Model2D.loadFromCompressedFile(newCompressedPath);
+            System.out.println("Reloaded modified textured model verification:");
+            System.out.println(" - Name: " + reloadedModel.getName());
+            System.out.println(" - Smile parameter value: " + reloadedModel.getParameterValue("smile"));
+            System.out.println(" - Textures: " + reloadedModel.getTextures().size());
+
+        } catch (Exception e) {
+            System.err.println("Error in testCompressedFileOperationsWithTexture: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Test 4: Test animation system
+     */
+    public static void testAnimationSystem() {
+        System.out.println("\n--- Test 4: Animation System Test ---");
+
+        try {
+            // Load model
+            Model2D model = Model2D.loadFromFile("test_character.model");
+
+            System.out.println("Testing animation system:");
+
+            // Test parameter-driven animation
+            System.out.println("Parameter-driven animation test:");
+            for (int frame = 0; frame < 10; frame++) {
+                float walkValue = (float) Math.sin(frame * 0.2f) * 0.5f + 0.5f;
+                float waveValue = (float) Math.sin(frame * 0.3f);
+                float blinkValue = frame % 20 == 0 ? 1.0f : 0.0f; // Blink every 20 frames
+
+                model.setParameterValue("walk_cycle", walkValue);
+                model.setParameterValue("wave", waveValue);
+                model.setParameterValue("blink", blinkValue);
+
+                model.update(0.016f);
+
+                System.out.println(" - Frame " + frame +
+                        ": walk=" + String.format("%.2f", walkValue) +
+                        ", wave=" + String.format("%.2f", waveValue) +
+                        ", blink=" + String.format("%.2f", blinkValue));
+            }
+
+            // Test pose system
+            System.out.println("Pose system test:");
+            ModelPose currentPose = model.getCurrentPose();
+            if (currentPose != null) {
+                System.out.println(" - Current pose: " + currentPose);
+            }
+
+            // Test animation layer blending
+            System.out.println("Animation layer test:");
+            for (AnimationLayer layer : model.getAnimationLayers()) {
+                System.out.println(" - Layer: " + layer.getName());
+            }
+
+        } catch (Exception e) {
+            System.err.println("Error in testAnimationSystem: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Test 5: Test physics system
+     */
+    public static void testPhysicsSystem() {
+        System.out.println("\n--- Test 5: Physics System Test ---");
+
+        try {
+            // Load model
+            Model2D model = Model2D.loadFromFile("test_character.model");
+
+            System.out.println("Testing physics system:");
+
+            PhysicsSystem physics = model.getPhysics();
+            System.out.println(" - Physics system: " +
+                    (physics != null ? "available" : "not available"));
+
+            if (physics != null) {
+                Vector2f gravity = physics.getGravity();
+                System.out.println(" - Gravity: (" + gravity.x + ", " + gravity.y + ")");
+                System.out.println(" - Air resistance: " + physics.getAirResistance());
+                System.out.println(" - Time scale: " + physics.getTimeScale());
+                System.out.println(" - Enabled: " + physics.isEnabled());
+            }
+
+            // Test physics simulation
+            System.out.println("Physics simulation test:");
+
+            // 初始化物理系统
+            physics.initialize();
+
+            // 添加一些物理粒子
+            PhysicsSystem.PhysicsParticle particle1 = physics.addParticle("test_particle1", new Vector2f(0, 0), 1.0f);
+            PhysicsSystem.PhysicsParticle particle2 = physics.addParticle("test_particle2", new Vector2f(10, 0), 1.0f);
+
+            // 添加弹簧连接
+            physics.addSpring("test_spring", particle1, particle2, 15.0f, 0.5f, 0.1f);
+
+            for (int step = 0; step < 15; step++) {
+                model.update(0.016f); // Simulate physics
+
+                if (step % 5 == 0) {
+                    System.out.println(" - Step " + step + ": model updated with physics");
+                    Vector2f pos1 = particle1.getPosition();
+                    System.out.println("   Particle1 position: (" +
+                            String.format("%.2f", pos1.x) + ", " +
+                            String.format("%.2f", pos1.y) + ")");
+                }
+            }
+
+            // Test physics properties
+            System.out.println("Physics properties verification:");
+            System.out.println(" - Active physics: " + physics.hasActivePhysics());
+            System.out.println(" - Particle count: " + physics.getParticles().size());
+            System.out.println(" - Spring count: " + physics.getSprings().size());
+
+        } catch (Exception e) {
+            System.err.println("Error in testPhysicsSystem: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Test 6: Test complex transformations
+     */
+    public static void testComplexTransformations() {
+        System.out.println("\n--- Test 6: Complex Transformations Test ---");
+
+        try {
+            // Load model
+            Model2D model = Model2D.loadFromFile("test_character.model");
+
+            System.out.println("Testing complex transformations:");
+
+            // Test nested transformations
+            ModelPart root = model.getRootPart();
+            if (root != null) {
+                Vector2f position = root.getPosition();
+                Vector2f scale = root.getScale();
+                System.out.println("Root transformation:");
+                System.out.println(" - Local position: (" + position.x + ", " + position.y + ")");
+                System.out.println(" - Rotation: " + root.getRotation() + " degrees");
+                System.out.println(" - Scale: (" + scale.x + ", " + scale.y + ")");
+
+                // 获取世界变换矩阵中的位置
+                float worldX = root.getWorldTransform().m02();
+                float worldY = root.getWorldTransform().m12();
+                System.out.println(" - World position (from matrix): (" + worldX + ", " + worldY + ")");
+            }
+
+            // Test transformation inheritance
+            System.out.println("Transformation inheritance test:");
+            ModelPart head = model.getPart("head");
+            if (head != null) {
+                Vector2f headPos = head.getPosition();
+                float headWorldX = head.getWorldTransform().m02();
+                float headWorldY = head.getWorldTransform().m12();
+                System.out.println("Head transformation (relative to body):");
+                System.out.println(" - Local position: (" + headPos.x + ", " + headPos.y + ")");
+                System.out.println(" - World position (from matrix): (" + headWorldX + ", " + headWorldY + ")");
+            }
+
+            // Test bounds calculation
+            BoundingBox bounds = model.getBounds();
+            if (bounds != null) {
+                System.out.println("Bounds calculation:");
+                System.out.println(" - Min: (" + bounds.getMinX() + ", " + bounds.getMinY() + ")");
+                System.out.println(" - Max: (" + bounds.getMaxX() + ", " + bounds.getMaxY() + ")");
+                System.out.println(" - Width: " + bounds.getWidth());
+                System.out.println(" - Height: " + bounds.getHeight());
+            }
+
+            // Test visibility system
+            System.out.println("Visibility system test:");
+            model.setVisible(false);
+            System.out.println(" - Model visible: " + model.isVisible());
+            model.setVisible(true);
+            System.out.println(" - Model visible: " + model.isVisible());
+
+        } catch (Exception e) {
+            System.err.println("Error in testComplexTransformations: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Test 7: Test performance with large model
+     */
+    public static void testPerformance() {
+        System.out.println("\n--- Test 7: Performance Test ---");
+
+        try {
+            // Create a more complex model for performance testing
+            Model2D complexModel = new Model2D("complex_character");
+
+            // Add many parts
+            ModelPart root = complexModel.createPart("root");
+            for (int i = 0; i < 10; i++) {
+                ModelPart part = complexModel.createPart("part_" + i);
+                root.addChild(part);
+                part.setPosition(i * 10, i * 5);
+                part.setRotation(i * 5);
+
+                // Add mesh
+                Mesh2D mesh = Mesh2D.createQuad("mesh_" + i, 20, 20);
+                complexModel.addMesh(mesh);
+                part.addMesh(mesh);
+            }
+
+            // Add multiple parameters
+            for (int i = 0; i < 8; i++) {
+                complexModel.createParameter("param_" + i, 0, 1, 0);
+            }
+
+            System.out.println("Performance test with complex model:");
+            System.out.println(" - Parts: " + complexModel.getParts().size());
+            System.out.println(" - Parameters: " + complexModel.getParameters().size());
+            System.out.println(" - Meshes: " + complexModel.getMeshes().size());
+
+            // Performance test: multiple updates
+            long startTime = System.currentTimeMillis();
+            int frameCount = 100;
+
+            for (int i = 0; i < frameCount; i++) {
+                // Animate parameters
+                for (int j = 0; j < 8; j++) {
+                    float value = (float) Math.sin(i * 0.1f + j * 0.5f) * 0.5f + 0.5f;
+                    complexModel.setParameterValue("param_" + j, value);
+                }
+                complexModel.update(0.016f);
+            }
+
+            long endTime = System.currentTimeMillis();
+            long totalTime = endTime - startTime;
+            double avgTimePerFrame = (double) totalTime / frameCount;
+
+            System.out.println("Performance results:");
+            System.out.println(" - Total time for " + frameCount + " frames: " + totalTime + "ms");
+            System.out.println(" - Average time per frame: " + String.format("%.2f", avgTimePerFrame) + "ms");
+            System.out.println(" - Estimated FPS: " + String.format("%.1f", 1000.0 / avgTimePerFrame));
+
+        } catch (Exception e) {
+            System.err.println("Error in testPerformance: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+
+    /**
+     * Utility method to print part hierarchy
+     */
+    private static void printPartHierarchy(ModelPart part, int depth) {
+        String indent = "  ".repeat(depth);
+        System.out.println(indent + "- " + part.getName() +
+                " (children: " + part.getChildren().size() + ")");
+
+        for (ModelPart child : part.getChildren()) {
+            printPartHierarchy(child, depth + 1);
+        }
+    }
+}