feat: 添加跨平台运行时、资产系统和UI适配功能 (#256)

* feat(platform-common): 添加WASM加载器和环境检测API

* feat(rapier2d): 新增Rapier2D WASM绑定包

* feat(physics-rapier2d): 添加跨平台WASM加载器

* feat(asset-system): 添加运行时资产目录和bundle格式

* feat(asset-system-editor): 新增编辑器资产管理包

* feat(editor-core): 添加构建系统和模块管理

* feat(editor-app): 重构浏览器预览使用import maps

* feat(platform-web): 添加BrowserRuntime和资产读取

* feat(engine): 添加材质系统和着色器管理

* feat(material): 新增材质系统和着色器编辑器

* feat(tilemap): 增强tilemap编辑器和动画系统

* feat(modules): 添加module.json配置

* feat(core): 添加module.json和类型定义更新

* chore: 更新依赖和构建配置

* refactor(plugins): 更新插件模板使用ModuleManifest

* chore: 添加第三方依赖库

* chore: 移除BehaviourTree-ai和ecs-astar子模块

* docs: 更新README和文档主题样式

* fix: 修复Rust文档测试和添加rapier2d WASM绑定

* fix(tilemap-editor): 修复画布高DPI屏幕分辨率适配问题

* feat(ui): 添加UI屏幕适配系统(CanvasScaler/SafeArea)

* fix(ecs-engine-bindgen): 添加缺失的ecs-framework-math依赖

* fix: 添加缺失的包依赖修复CI构建

* fix: 修复CodeQL检测到的代码问题

* fix: 修复构建错误和缺失依赖

* fix: 修复类型检查错误

* fix(material-system): 修复tsconfig配置支持TypeScript项目引用

* fix(editor-core): 修复Rollup构建配置添加tauri external

* fix: 修复CodeQL检测到的代码问题

* fix: 修复CodeQL检测到的代码问题

packages/asset-system/src/loaders/BinaryLoader.ts

@@ -3,14 +3,9 @@
  * 二进制资产加载器
  */
 
-import {
-    AssetType,
-    IAssetLoadOptions,
-    IAssetMetadata,
-    IAssetLoadResult,
-    AssetLoadError
-} from '../types/AssetTypes';
-import { IAssetLoader, IBinaryAsset } from '../interfaces/IAssetLoader';
+import { AssetType } from '../types/AssetTypes';
+import { IAssetLoader, IBinaryAsset, IAssetParseContext } from '../interfaces/IAssetLoader';
+import { IAssetContent, AssetContentType } from '../interfaces/IAssetReader';
 
 /**
  * Binary loader implementation
@@ -22,144 +17,27 @@ export class BinaryLoader implements IAssetLoader<IBinaryAsset> {
         '.bin', '.dat', '.raw', '.bytes',
         '.wasm', '.so', '.dll', '.dylib'
     ];
+    readonly contentType: AssetContentType = 'binary';
 
     /**
-     * Load binary asset
-     * 加载二进制资产
+     * Parse binary from content.
+     * 从内容解析二进制。
      */
-    async load(
-        path: string,
-        metadata: IAssetMetadata,
-        options?: IAssetLoadOptions
-    ): Promise<IAssetLoadResult<IBinaryAsset>> {
-        const startTime = performance.now();
-
-        try {
-            const response = await this.fetchWithTimeout(path, options?.timeout);
-
-            if (!response.ok) {
-                throw new Error(`HTTP error! status: ${response.status}`);
-            }
-
-            // 获取MIME类型 / Get MIME type
-            const mimeType = response.headers.get('content-type') || undefined;
-
-            // 获取总大小用于进度回调 / Get total size for progress callback
-            const contentLength = response.headers.get('content-length');
-            const total = contentLength ? parseInt(contentLength, 10) : 0;
-
-            // 读取响应 / Read response
-            let data: ArrayBuffer;
-            if (options?.onProgress && total > 0) {
-                data = await this.readResponseWithProgress(response, total, options.onProgress);
-            } else {
-                data = await response.arrayBuffer();
-            }
-
-            const asset: IBinaryAsset = {
-                data,
-                mimeType
-            };
-
-            return {
-                asset,
-                handle: 0,
-                metadata,
-                loadTime: performance.now() - startTime
-            };
-        } catch (error) {
-            if (error instanceof Error) {
-                throw new AssetLoadError(
-                    `Failed to load binary: ${error.message}`,
-                    metadata.guid,
-                    AssetType.Binary,
-                    error
-                );
-            }
-            throw AssetLoadError.fileNotFound(metadata.guid, path);
+    async parse(content: IAssetContent, _context: IAssetParseContext): Promise<IBinaryAsset> {
+        if (!content.binary) {
+            throw new Error('Binary content is empty');
         }
+
+        return {
+            data: content.binary
+        };
     }
 
-    /**
-     * Fetch with timeout
-     * 带超时的fetch
-     */
-    private async fetchWithTimeout(url: string, timeout = 30000): Promise<Response> {
-        const controller = new AbortController();
-        const timeoutId = setTimeout(() => controller.abort(), timeout);
-
-        try {
-            const response = await fetch(url, {
-                signal: controller.signal,
-                mode: 'cors',
-                credentials: 'same-origin'
-            });
-            return response;
-        } finally {
-            clearTimeout(timeoutId);
-        }
-    }
-
-    /**
-     * Read response with progress
-     * 带进度读取响应
-     */
-    private async readResponseWithProgress(
-        response: Response,
-        total: number,
-        onProgress: (progress: number) => void
-    ): Promise<ArrayBuffer> {
-        const reader = response.body?.getReader();
-        if (!reader) {
-            return response.arrayBuffer();
-        }
-
-        const chunks: Uint8Array[] = [];
-        let receivedLength = 0;
-
-        while (true) {
-            const { done, value } = await reader.read();
-
-            if (done) break;
-
-            chunks.push(value);
-            receivedLength += value.length;
-
-            // 报告进度 / Report progress
-            onProgress(receivedLength / total);
-        }
-
-        // 合并chunks到ArrayBuffer / Merge chunks into ArrayBuffer
-        const result = new Uint8Array(receivedLength);
-        let position = 0;
-        for (const chunk of chunks) {
-            result.set(chunk, position);
-            position += chunk.length;
-        }
-
-        return result.buffer;
-    }
-
-    /**
-     * Validate if the loader can handle this asset
-     * 验证加载器是否可以处理此资产
-     */
-    canLoad(path: string, _metadata: IAssetMetadata): boolean {
-        const ext = path.toLowerCase().substring(path.lastIndexOf('.'));
-        return this.supportedExtensions.includes(ext);
-    }
-
-    /**
-     * Estimate memory usage for the asset
-     * 估算资产的内存使用量
-     */
-
     /**
      * Dispose loaded asset
      * 释放已加载的资产
      */
     dispose(asset: IBinaryAsset): void {
-        // ArrayBuffer无法直接释放，但可以清空引用 / Can't directly release ArrayBuffer, but clear reference
         (asset as any).data = null;
     }
 }

packages/asset-system/src/loaders/JsonLoader.ts

@@ -3,14 +3,9 @@
  * JSON资产加载器
  */
 
-import {
-    AssetType,
-    IAssetLoadOptions,
-    IAssetMetadata,
-    IAssetLoadResult,
-    AssetLoadError
-} from '../types/AssetTypes';
-import { IAssetLoader, IJsonAsset } from '../interfaces/IAssetLoader';
+import { AssetType } from '../types/AssetTypes';
+import { IAssetLoader, IJsonAsset, IAssetParseContext } from '../interfaces/IAssetLoader';
+import { IAssetContent, AssetContentType } from '../interfaces/IAssetReader';
 
 /**
  * JSON loader implementation
@@ -19,144 +14,27 @@ import { IAssetLoader, IJsonAsset } from '../interfaces/IAssetLoader';
 export class JsonLoader implements IAssetLoader<IJsonAsset> {
     readonly supportedType = AssetType.Json;
     readonly supportedExtensions = ['.json', '.jsonc'];
+    readonly contentType: AssetContentType = 'text';
 
     /**
-     * Load JSON asset
-     * 加载JSON资产
+     * Parse JSON from text content.
+     * 从文本内容解析JSON。
      */
-    async load(
-        path: string,
-        metadata: IAssetMetadata,
-        options?: IAssetLoadOptions
-    ): Promise<IAssetLoadResult<IJsonAsset>> {
-        const startTime = performance.now();
-
-        try {
-            const response = await this.fetchWithTimeout(path, options?.timeout);
-
-            if (!response.ok) {
-                throw new Error(`HTTP error! status: ${response.status}`);
-            }
-
-            // 获取总大小用于进度回调 / Get total size for progress callback
-            const contentLength = response.headers.get('content-length');
-            const total = contentLength ? parseInt(contentLength, 10) : 0;
-
-            // 读取响应 / Read response
-            let jsonData: unknown;
-            if (options?.onProgress && total > 0) {
-                jsonData = await this.readResponseWithProgress(response, total, options.onProgress);
-            } else {
-                jsonData = await response.json();
-            }
-
-            const asset: IJsonAsset = {
-                data: jsonData
-            };
-
-            return {
-                asset,
-                handle: 0,
-                metadata,
-                loadTime: performance.now() - startTime
-            };
-        } catch (error) {
-            if (error instanceof Error) {
-                throw new AssetLoadError(
-                    `Failed to load JSON: ${error.message}`,
-                    metadata.guid,
-                    AssetType.Json,
-                    error
-                );
-            }
-            throw AssetLoadError.fileNotFound(metadata.guid, path);
+    async parse(content: IAssetContent, _context: IAssetParseContext): Promise<IJsonAsset> {
+        if (!content.text) {
+            throw new Error('JSON content is empty');
         }
+
+        return {
+            data: JSON.parse(content.text)
+        };
     }
 
-    /**
-     * Fetch with timeout
-     * 带超时的fetch
-     */
-    private async fetchWithTimeout(url: string, timeout = 30000): Promise<Response> {
-        const controller = new AbortController();
-        const timeoutId = setTimeout(() => controller.abort(), timeout);
-
-        try {
-            const response = await fetch(url, {
-                signal: controller.signal,
-                mode: 'cors',
-                credentials: 'same-origin'
-            });
-            return response;
-        } finally {
-            clearTimeout(timeoutId);
-        }
-    }
-
-    /**
-     * Read response with progress
-     * 带进度读取响应
-     */
-    private async readResponseWithProgress(
-        response: Response,
-        total: number,
-        onProgress: (progress: number) => void
-    ): Promise<unknown> {
-        const reader = response.body?.getReader();
-        if (!reader) {
-            return response.json();
-        }
-
-        const chunks: Uint8Array[] = [];
-        let receivedLength = 0;
-
-        while (true) {
-            const { done, value } = await reader.read();
-
-            if (done) break;
-
-            chunks.push(value);
-            receivedLength += value.length;
-
-            // 报告进度 / Report progress
-            onProgress(receivedLength / total);
-        }
-
-        // 合并chunks / Merge chunks
-        const allChunks = new Uint8Array(receivedLength);
-        let position = 0;
-        for (const chunk of chunks) {
-            allChunks.set(chunk, position);
-            position += chunk.length;
-        }
-
-        // 解码为字符串并解析JSON / Decode to string and parse JSON
-        const decoder = new TextDecoder('utf-8');
-        const jsonString = decoder.decode(allChunks);
-        return JSON.parse(jsonString);
-    }
-
-    /**
-     * Validate if the loader can handle this asset
-     * 验证加载器是否可以处理此资产
-     */
-    canLoad(path: string, _metadata: IAssetMetadata): boolean {
-        const ext = path.toLowerCase().substring(path.lastIndexOf('.'));
-        return this.supportedExtensions.includes(ext);
-    }
-
-    /**
-     * Estimate memory usage for the asset
-     * 估算资产的内存使用量
-     */
-
     /**
      * Dispose loaded asset
      * 释放已加载的资产
      */
     dispose(asset: IJsonAsset): void {
-        // JSON资产通常不需要特殊清理 / JSON assets usually don't need special cleanup
-        // 但可以清空引用以帮助GC / But can clear references to help GC
         (asset as any).data = null;
     }
 }

packages/asset-system/src/loaders/TextLoader.ts

@@ -3,14 +3,9 @@
  * 文本资产加载器
  */
 
-import {
-    AssetType,
-    IAssetLoadOptions,
-    IAssetMetadata,
-    IAssetLoadResult,
-    AssetLoadError
-} from '../types/AssetTypes';
-import { IAssetLoader, ITextAsset } from '../interfaces/IAssetLoader';
+import { AssetType } from '../types/AssetTypes';
+import { IAssetLoader, ITextAsset, IAssetParseContext } from '../interfaces/IAssetLoader';
+import { IAssetContent, AssetContentType } from '../interfaces/IAssetReader';
 
 /**
  * Text loader implementation
@@ -19,115 +14,21 @@ import { IAssetLoader, ITextAsset } from '../interfaces/IAssetLoader';
 export class TextLoader implements IAssetLoader<ITextAsset> {
     readonly supportedType = AssetType.Text;
     readonly supportedExtensions = ['.txt', '.text', '.md', '.csv', '.xml', '.html', '.css', '.js', '.ts'];
+    readonly contentType: AssetContentType = 'text';
 
     /**
-     * Load text asset
-     * 加载文本资产
+     * Parse text from content.
+     * 从内容解析文本。
      */
-    async load(
-        path: string,
-        metadata: IAssetMetadata,
-        options?: IAssetLoadOptions
-    ): Promise<IAssetLoadResult<ITextAsset>> {
-        const startTime = performance.now();
-
-        try {
-            const response = await this.fetchWithTimeout(path, options?.timeout);
-
-            if (!response.ok) {
-                throw new Error(`HTTP error! status: ${response.status}`);
-            }
-
-            // 获取总大小用于进度回调 / Get total size for progress callback
-            const contentLength = response.headers.get('content-length');
-            const total = contentLength ? parseInt(contentLength, 10) : 0;
-
-            // 读取响应 / Read response
-            let content: string;
-            if (options?.onProgress && total > 0) {
-                content = await this.readResponseWithProgress(response, total, options.onProgress);
-            } else {
-                content = await response.text();
-            }
-
-            // 检测编码 / Detect encoding
-            const encoding = this.detectEncoding(content);
-
-            const asset: ITextAsset = {
-                content,
-                encoding
-            };
-
-            return {
-                asset,
-                handle: 0,
-                metadata,
-                loadTime: performance.now() - startTime
-            };
-        } catch (error) {
-            if (error instanceof Error) {
-                throw new AssetLoadError(
-                    `Failed to load text: ${error.message}`,
-                    metadata.guid,
-                    AssetType.Text,
-                    error
-                );
-            }
-            throw AssetLoadError.fileNotFound(metadata.guid, path);
-        }
-    }
-
-    /**
-     * Fetch with timeout
-     * 带超时的fetch
-     */
-    private async fetchWithTimeout(url: string, timeout = 30000): Promise<Response> {
-        const controller = new AbortController();
-        const timeoutId = setTimeout(() => controller.abort(), timeout);
-
-        try {
-            const response = await fetch(url, {
-                signal: controller.signal,
-                mode: 'cors',
-                credentials: 'same-origin'
-            });
-            return response;
-        } finally {
-            clearTimeout(timeoutId);
-        }
-    }
-
-    /**
-     * Read response with progress
-     * 带进度读取响应
-     */
-    private async readResponseWithProgress(
-        response: Response,
-        total: number,
-        onProgress: (progress: number) => void
-    ): Promise<string> {
-        const reader = response.body?.getReader();
-        if (!reader) {
-            return response.text();
+    async parse(content: IAssetContent, _context: IAssetParseContext): Promise<ITextAsset> {
+        if (!content.text) {
+            throw new Error('Text content is empty');
         }
 
-        const decoder = new TextDecoder('utf-8');
-        let result = '';
-        let receivedLength = 0;
-
-        while (true) {
-            const { done, value } = await reader.read();
-
-            if (done) break;
-
-            receivedLength += value.length;
-            result += decoder.decode(value, { stream: true });
-
-            // 报告进度 / Report progress
-            onProgress(receivedLength / total);
-        }
-
-        return result;
+        return {
+            content: content.text,
+            encoding: this.detectEncoding(content.text)
+        };
     }
 
     /**
@@ -135,38 +36,20 @@ export class TextLoader implements IAssetLoader<ITextAsset> {
      * 检测文本编码
      */
     private detectEncoding(content: string): 'utf8' | 'utf16' | 'ascii' {
-        // 简单的编码检测 / Simple encoding detection
-        // 检查是否包含非ASCII字符 / Check for non-ASCII characters
         for (let i = 0; i < content.length; i++) {
             const charCode = content.charCodeAt(i);
             if (charCode > 127) {
-                // 包含非ASCII字符，可能是UTF-8或UTF-16 / Contains non-ASCII, likely UTF-8 or UTF-16
                 return charCode > 255 ? 'utf16' : 'utf8';
             }
         }
         return 'ascii';
     }
 
-    /**
-     * Validate if the loader can handle this asset
-     * 验证加载器是否可以处理此资产
-     */
-    canLoad(path: string, _metadata: IAssetMetadata): boolean {
-        const ext = path.toLowerCase().substring(path.lastIndexOf('.'));
-        return this.supportedExtensions.includes(ext);
-    }
-
-    /**
-     * Estimate memory usage for the asset
-     * 估算资产的内存使用量
-     */
-
     /**
      * Dispose loaded asset
      * 释放已加载的资产
      */
     dispose(asset: ITextAsset): void {
-        // 清空内容以帮助GC / Clear content to help GC
         (asset as any).content = '';
     }
 }

packages/asset-system/src/loaders/TextureLoader.ts

@@ -3,14 +3,9 @@
  * 纹理资产加载器
  */
 
-import {
-    AssetType,
-    IAssetLoadOptions,
-    IAssetMetadata,
-    IAssetLoadResult,
-    AssetLoadError
-} from '../types/AssetTypes';
-import { IAssetLoader, ITextureAsset } from '../interfaces/IAssetLoader';
+import { AssetType } from '../types/AssetTypes';
+import { IAssetLoader, ITextureAsset, IAssetParseContext } from '../interfaces/IAssetLoader';
+import { IAssetContent, AssetContentType } from '../interfaces/IAssetReader';
 
 /**
  * Texture loader implementation
@@ -19,147 +14,36 @@ import { IAssetLoader, ITextureAsset } from '../interfaces/IAssetLoader';
 export class TextureLoader implements IAssetLoader<ITextureAsset> {
     readonly supportedType = AssetType.Texture;
     readonly supportedExtensions = ['.png', '.jpg', '.jpeg', '.gif', '.webp', '.bmp'];
+    readonly contentType: AssetContentType = 'image';
 
     private static _nextTextureId = 1;
-    private readonly _loadedTextures = new Map<string, ITextureAsset>();
 
     /**
-     * Load texture asset
-     * 加载纹理资产
+     * Parse texture from image content.
+     * 从图片内容解析纹理。
      */
-    async load(
-        path: string,
-        metadata: IAssetMetadata,
-        options?: IAssetLoadOptions
-    ): Promise<IAssetLoadResult<ITextureAsset>> {
-        const startTime = performance.now();
-
-        // 检查缓存 / Check cache
-        if (!options?.forceReload && this._loadedTextures.has(path)) {
-            const cached = this._loadedTextures.get(path)!;
-            return {
-                asset: cached,
-                handle: cached.textureId,
-                metadata,
-                loadTime: 0
-            };
+    async parse(content: IAssetContent, context: IAssetParseContext): Promise<ITextureAsset> {
+        if (!content.image) {
+            throw new Error('Texture content is empty');
         }
 
-        try {
-            // 创建图像元素 / Create image element
-            const image = await this.loadImage(path, options);
+        const image = content.image;
 
-            // 创建纹理资产 / Create texture asset
-            const textureAsset: ITextureAsset = {
-                textureId: TextureLoader._nextTextureId++,
-                width: image.width,
-                height: image.height,
-                format: 'rgba', // 默认格式 / Default format
-                hasMipmaps: false,
-                data: image
-            };
+        const textureAsset: ITextureAsset = {
+            textureId: TextureLoader._nextTextureId++,
+            width: image.width,
+            height: image.height,
+            format: 'rgba',
+            hasMipmaps: false,
+            data: image
+        };
 
-            // 缓存纹理 / Cache texture
-            this._loadedTextures.set(path, textureAsset);
-
-            // 触发引擎纹理加载（如果有引擎桥接） / Trigger engine texture loading if bridge exists
-            if (typeof window !== 'undefined' && (window as any).engineBridge) {
-                await this.uploadToGPU(textureAsset, path);
-            }
-
-            return {
-                asset: textureAsset,
-                handle: textureAsset.textureId,
-                metadata,
-                loadTime: performance.now() - startTime
-            };
-        } catch (error) {
-            throw AssetLoadError.fileNotFound(metadata.guid, path);
-        }
-    }
-
-    /**
-     * Load image from URL
-     * 从URL加载图像
-     */
-    private async loadImage(url: string, options?: IAssetLoadOptions): Promise<HTMLImageElement> {
-        // For Tauri asset URLs, use fetch to load the image
-        // 对于Tauri资产URL，使用fetch加载图像
-        if (url.startsWith('http://asset.localhost/') || url.startsWith('asset://')) {
-            try {
-                const response = await fetch(url);
-                if (!response.ok) {
-                    throw new Error(`Failed to fetch image: ${response.statusText}`);
-                }
-                const blob = await response.blob();
-                const blobUrl = URL.createObjectURL(blob);
-
-                return new Promise((resolve, reject) => {
-                    const image = new Image();
-                    image.onload = () => {
-                        // Clean up blob URL after loading
-                        // 加载后清理blob URL
-                        URL.revokeObjectURL(blobUrl);
-                        resolve(image);
-                    };
-                    image.onerror = () => {
-                        URL.revokeObjectURL(blobUrl);
-                        reject(new Error(`Failed to load image from blob: ${url}`));
-                    };
-                    image.src = blobUrl;
-                });
-            } catch (error) {
-                throw new Error(`Failed to load Tauri asset: ${url} - ${error}`);
-            }
+        // Upload to GPU if bridge exists.
+        if (typeof window !== 'undefined' && (window as any).engineBridge) {
+            await this.uploadToGPU(textureAsset, context.metadata.path);
         }
 
-        // For regular URLs, use standard Image loading
-        // 对于常规URL，使用标准Image加载
-        return new Promise((resolve, reject) => {
-            const image = new Image();
-            image.crossOrigin = 'anonymous';
-
-            // 超时处理 / Timeout handling
-            const timeout = options?.timeout || 30000;
-            const timeoutId = setTimeout(() => {
-                reject(new Error(`Image load timeout: ${url}`));
-            }, timeout);
-
-            // 进度回调 / Progress callback
-            if (options?.onProgress) {
-                // 图像加载没有真正的进度事件，模拟进度 / Images don't have real progress events, simulate
-                let progress = 0;
-                const progressInterval = setInterval(() => {
-                    progress = Math.min(progress + 0.1, 0.9);
-                    options.onProgress!(progress);
-                }, 100);
-
-                image.onload = () => {
-                    clearInterval(progressInterval);
-                    clearTimeout(timeoutId);
-                    options.onProgress!(1);
-                    resolve(image);
-                };
-
-                image.onerror = () => {
-                    clearInterval(progressInterval);
-                    clearTimeout(timeoutId);
-                    reject(new Error(`Failed to load image: ${url}`));
-                };
-            } else {
-                image.onload = () => {
-                    clearTimeout(timeoutId);
-                    resolve(image);
-                };
-
-                image.onerror = () => {
-                    clearTimeout(timeoutId);
-                    reject(new Error(`Failed to load image: ${url}`));
-                };
-            }
-
-            image.src = url;
-        });
+        return textureAsset;
     }
 
     /**
@@ -173,34 +57,12 @@ export class TextureLoader implements IAssetLoader<ITextureAsset> {
         }
     }
 
-    /**
-     * Validate if the loader can handle this asset
-     * 验证加载器是否可以处理此资产
-     */
-    canLoad(path: string, _metadata: IAssetMetadata): boolean {
-        const ext = path.toLowerCase().substring(path.lastIndexOf('.'));
-        return this.supportedExtensions.includes(ext);
-    }
-
-    /**
-     * Estimate memory usage for the asset
-     * 估算资产的内存使用量
-     */
-
     /**
      * Dispose loaded asset
      * 释放已加载的资产
      */
     dispose(asset: ITextureAsset): void {
-        // 从缓存中移除 / Remove from cache
-        for (const [path, cached] of this._loadedTextures.entries()) {
-            if (cached === asset) {
-                this._loadedTextures.delete(path);
-                break;
-            }
-        }
-
-        // 释放GPU资源 / Release GPU resources
+        // Release GPU resources.
         if (typeof window !== 'undefined' && (window as any).engineBridge) {
             const bridge = (window as any).engineBridge;
             if (bridge.unloadTexture) {
@@ -208,7 +70,7 @@ export class TextureLoader implements IAssetLoader<ITextureAsset> {
             }
         }
 
-        // 清理图像数据 / Clean up image data
+        // Clean up image data.
         if (asset.data instanceof HTMLImageElement) {
             asset.data.src = '';
         }