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  "contentMarkdown": "# Unity 3D场景UI被打断合批的原因？\n\n> [!note] 我的 UWA 问答\n> 本文收录我在 UWA 问答发表的公开回答。问题内容归原提问者；回答保留当时语境，技术结论可能受 Unity 版本、平台和项目条件限制。\n\n## 问题\n\n![动态合批被打断.png](assets/606ec4af6bb31032f9791252/01.png)\n\n![动态合批被打断2.png](assets/606ec4af6bb31032f9791252/02.png)\n\n如上图，使用SpriteRenderer做图片和TextMeshPro做文字，使用unity帧调试器查看，发现第一排三个图片动态合批了，第二排三个图片动态合批了，第三排三个图片动态合批了，然后文字都合不了批，原因是动态批处理在player Settings 中被关闭或在当前环境中被暂时禁用，以避免z-fighting。能不能所有图片一个批次，所有文字一个批次，该怎么做？\n\n- 提问者：cwf\n- 提问时间：2021-04-09 00:54:07\n\n## 我的回答\n\n1. 对于普通的Mesh物体的绘制，也就是使用MeshRenderer绘制的Mesh：在开启了动态合批的情况下，使用相同Material的两个物体，以相邻顺序绘制时，如果满足其他动态合批的条件，即可合批。\n\n题主的文字部分没有合批，是因为没有开启动态合批。看FrameDebugger，题主的渲染管线使用的是SRP，开启动态合批的方式是在RenderPipelineAsset的Inspector面板的Advanced下勾选Dynamic Batching。\n\n![image.png](assets/606ec4af6bb31032f9791252/03.png)\n\n至于说为什么图片出现了合批现象，这是因为图片使用SpriteRenderer来绘制，其网格是Unity动态生成的，合批的行为也是Unity内部处理的，不受Dynamic Batching开启与否的影响。\n\n1. 其次是控制渲染顺序，使应该合批的物体以相邻顺序渲染，先绘制所有图片，再绘制所有文字。\n\n方法一：按照楼上说的，设置Order in Layer，图片的Order in Layer设置为0，文字为1。\n\n![image.png](assets/606ec4af6bb31032f9791252/04.png)\n\n方法二：将所有图片的RenderQueue都设置为3000，将所有文字的Render Queue都设置为3001。\n\n![image.png](assets/606ec4af6bb31032f9791252/05.png)\n\n![image.png](assets/606ec4af6bb31032f9791252/06.png)\n\n效果如下：\n\n![image.png](assets/606ec4af6bb31032f9791252/07.png)\n\n![image.png](assets/606ec4af6bb31032f9791252/08.png)\n\n- 回答时间：2021-04-09 21:10:00\n- 最后更新：2021-04-09 21:10:00\n- 采纳状态：已采纳\n\n## 来源与关系\n\n- 上位集合：[[10-计算机、信息技术与工程/05-游戏图形与运行时/我的UWA问答/我的UWA问答|我的 UWA 问答]]\n- UWA 标签：UI、渲染模块\n- 原始问题：[Unity 3D场景UI被打断合批的原因？](https://answer.uwa4d.com/question/606ec4af6bb31032f9791252)\n- 源页最后更新：2021-04-09 21:10:00\n"
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