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1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">最佳实践</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">提升游戏性能</span><meta itemprop="position" content="2"></li></ul></nav><span class="theme-doc-version-badge badge badge--secondary">版本：3.0.0</span><div class="tocCollapsible_bZGK theme-doc-toc-mobile tocMobile_TmEX"><button type="button" class="clean-btn tocCollapsibleButton_l22C">本页总览</button></div><div class="theme-doc-markdown markdown"><h1>提升游戏性能</h1><p>建议先阅读官方文档的 <a href="https://docs.cocos.com/creator/2.4/manual/zh/advanced-topics/ui-auto-batch.html" target="_blank" rel="noopener noreferrer">UI 渲染批次合并指南</a> 了解一些基础知识。</p><p>社区版对动态合图、文本渲染等功能进行了大量的改进，现在，你只需要确保以下几点就可以大幅提升游戏的性能。</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="使用动态合图">使用动态合图<a class="hash-link" href="#使用动态合图" title="标题的直接链接"></a></h2><p>在之前，动态合图不支持复用图集的废弃区域，所以我们通常会关闭该特性，倾向于靠静态图集或者自动图集达到降低 Draw Call 的目的。</p><p>现在，社区版几乎重构了整个动态合图系统，实用性得到大幅提升：</p><ul><li>支持复用废弃区域</li><li>自动参与多纹理渲染 </li><li>支持 Spine 参与动态合图</li></ul><p>你只需要重新启用动态合图，并尽量让更多的纹理都参与合图，即可大幅降低 DrawCall 的数量。</p><p>我们还建议做以下调整：</p><p><strong>放宽能参与合图的纹理尺寸限制</strong></p><div class="language-js codeBlockContainer_MPoW theme-code-block" style="--prism-color:#393A34;--prism-background-color:#f6f8fa"><div class="codeBlockContent_B9tL"><pre tabindex="0" class="prism-code language-js codeBlock__0OG thin-scrollbar"><code class="codeBlockLines_gEuF"><span class="token-line" style="color:#393A34"><span class="token plain">cc</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">dynamicAtlasManager</span><span class="token punctuation" style="color:#393A34">.</span><span class="token property-access">maxFrameSize</span><span class="token plain"> </span><span class="token operator" style="color:#393A34">=</span><span class="token plain"> </span><span class="token number" style="color:#36acaa">1024</span><span class="token punctuation" style="color:#393A34">;</span><span class="token plain"> </span><span class="token comment" style="color:#999988;font-style:italic">// 推荐 512、1024 甚至 2048</span><br></span></code></pre><div class="buttonGroup_hRr1"><button type="button" aria-label="复制代码到剪贴板" title="复制" class="clean-btn"><span class="copyButtonIcons_W9eQ" aria-hidden="true"><svg class="copyButtonIcon_XEyF" viewBox="0 0 24 24"><path d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg class="copyButtonSuccessIcon_i9w9" viewBox="0 0 24 24"><path d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div><p>你可以根据游戏运行过程中所使用的动态图集数量，来逐步放宽限制，取得一个平衡点。</p><p><strong>优化动态图集的使用率</strong></p><p>当游戏使用的动态图集数量太多，你可以控制某个组件或纹理不参与动态合图：</p><ul><li>调整纹理的 <code>packable</code> 属性</li><li>调整组件的 <code>allowDynamicAtlas</code> 属性</li></ul><p>通过让某些优化性价比较低的纹理不参与合图，例如：</p><ul><li>大尺寸、单独出现的纹理：比如背景图，尺寸较大使得占用图集的空间大，并且一个场景内可能只有单个节点会显示，不存在需要大量合批的情况。</li></ul><p>来优化图集的使用。</p><p><strong>及时释放无用资源</strong></p><p>由于社区版支持了图集空间的复用，所以释放资源的同时也会将其占用的图集空间释放，以提供给其它纹理使用。</p><p>建议在不用的时候及时释放一些冷门资源，常用的资源则不进行释放，避免频繁释放后加载导致的性能消耗。</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="使用-label-缓存模式">使用 Label 缓存模式<a class="hash-link" href="#使用-label-缓存模式" title="标题的直接链接"></a></h2><p>在之前，引擎提供的缓存模式都各有问题，无法在实际项目中使用：</p><ul><li><p>Bitmap 模式：虽然能够参与动态合图，但无法复用废弃空间，随着游戏的运行，废弃字符的纹理占满图集后就失去了优化效果。</p></li><li><p>Char 模式：依然是无法复用的问题，仅有一张字符纹理，当纹理被填满后甚至无法渲染出文本。</p></li></ul><p>现在，由于社区版使动态合图支持了复用，并且还重构了 Char 模式的实现，使得 你只需要合理运用这两种缓存模式即可完成对 Label 的优化工作。</p><p><strong>首选 Char 缓存模式</strong></p><p>我们建议 Label 默认使用 Char 缓存模式，相比 Bitmap 模式，Char 模式是按字符进行复用的，有着更高的性能优势。</p><p><strong>备选 Bitmap 缓存模式</strong></p><p>如果遇到以下场景，则不适合使用 Char 模式进行渲染：</p><ul><li>显示像 Emoji 这种字素簇的字符串，由于内部实现无法分割为单个字符，所以不能正常显示。</li><li>超大字体，可能瞬间占满字符纹理。</li><li>显示聊天消息、输入框、玩家名称这类不可控的内容，由于第一条限制，所以为了保证 Label 能正常显示，则不建议使用。</li></ul><p>这时候就可以改用 Bitmap 模式进行渲染，依然能参与动态合图进行合批。</p><h3 class="anchor anchorWithStickyNavbar_mojV" id="注意事项">注意事项<a class="hash-link" href="#注意事项" title="标题的直接链接"></a></h3><ul><li><strong>勿对 <code>fontSize</code> 属性进行动画或者缓动</strong></li></ul><p>无论是否使用缓存模式，也不建议频繁修改 <code>fontSize</code> 属性，这会导致每帧都需要重新生成文字纹理，造成大量的性能消耗，可以转为使用节点的 <code>scale</code> 来代替。</p><ul><li><strong>Char 缓存模式依旧不能在内部字符纹理填满时正常渲染</strong></li></ul><p>这是引擎原本的限制，我们未对其进行修复，原因是我们认为 8 张数量已经够多了，8 张都用完的情况大部分是没有合理搭配使用两种缓存模式。</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="进行文本渲染烘焙">进行文本渲染烘焙<a class="hash-link" href="#进行文本渲染烘焙" title="标题的直接链接"></a></h2><p>在之前，即使没有 Drawcall 高的问题，引擎文本渲染本身的性能消耗也并不低。</p><p>为此，社区版新增了烘焙的相关接口，你可以通过这些接口将文本渲染的性能提升 10 倍以上！</p><p>可前往 <a href="/cocos-enhance-kit/docs/user-guide/text-render/text-baking">文本渲染烘焙</a> 文档了解更多详情。</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="启用-spine-合批">启用 Spine 合批<a class="hash-link" href="#启用-spine-合批" title="标题的直接链接"></a></h2><p>Spine 组件现在不仅可以参与动态合图，还能与其他渲染组件进行合批。</p><p>只需启用组件上的 <code>Enable Batch</code> 属性即可。</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="提升-tiledmap-性能">提升 TiledMap 性能<a class="hash-link" href="#提升-tiledmap-性能" title="标题的直接链接"></a></h2><p>一个 TiledMap 可能会有很多个 TiledLayer，如果开启了 TiledMap 的 Culling 特性，则需要每个 Layer 都单独计算 Culling 数据。</p><p>社区版新增了在满足一定条件的情况下可以复用 Culling 数据的特性，以减少 CPU 的性能消耗。</p><p>可前往 <a href="/cocos-enhance-kit/docs/user-guide/tiledmap/tiledmap-culling">复用 Culling 数据</a> 文档了解更多详情。</p><h2 class="anchor anchorWithStickyNavbar_mojV" id="启用多线程支持">启用多线程支持<a class="hash-link" href="#启用多线程支持" title="标题的直接链接"></a></h2><p><strong>现在，以下引擎的部分增加了多线程支持：</strong></p><ul><li><strong>资源管线（下载与缓存部分）</strong></li><li><strong>音频系统</strong></li><li><strong>XMLHttpRequest</strong></li><li><strong>WebSocket</strong></li></ul><p>启用后可以释放其对主线程的占用，减少卡顿现象。</p><p>除此之外，还<strong>支持自定义多线程扩展</strong>，大幅简化了将项目逻辑多线程化所需的步骤！</p><p>并且在微信小游戏平台下还有以下改进：</p><ul><li><strong>默认启用网络接口和音频接口的高性能模式</strong></li><li><strong>网络接口支持 HTTP/2、HTTP/3(QUIC) 协议</strong></li></ul><p>详情请阅读文档：<a href="/cocos-enhance-kit/docs/user-guide/multithread/thread-intro">多线程支持</a>。</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="文档分页导航"><a class="pagination-nav__link pagination-nav__link--prev" href="/cocos-enhance-kit/docs/installation/installation-manual"><div class="pagination-nav__sublabel">上一页</div><div class="pagination-nav__label">手动安装</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/cocos-enhance-kit/docs/best-practices/quality-guide"><div class="pagination-nav__sublabel">下一页</div><div class="pagination-nav__label">提升游戏质量</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_cNA8 thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#使用动态合图" class="table-of-contents__link toc-highlight">使用动态合图</a></li><li><a href="#使用-label-缓存模式" class="table-of-contents__link toc-highlight">使用 Label 缓存模式</a><ul><li><a href="#注意事项" class="table-of-contents__link toc-highlight">注意事项</a></li></ul></li><li><a href="#进行文本渲染烘焙" class="table-of-contents__link toc-highlight">进行文本渲染烘焙</a></li><li><a href="#启用-spine-合批" class="table-of-contents__link toc-highlight">启用 Spine 合批</a></li><li><a href="#提升-tiledmap-性能" class="table-of-contents__link toc-highlight">提升 TiledMap 性能</a></li><li><a href="#启用多线程支持" class="table-of-contents__link toc-highlight">启用多线程支持</a></li></ul></div></div></div></div></main></div></div></div>
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