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  "contentMarkdown": "# Live2D平滑渐变方案\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\nLive2D官方提供的组件CubismRenderController通过设置Opacity可以设置Cubism的透明度,但是过渡很生硬,如下图\n\n![327T`YU`6GJMIK2QAB3.png](assets/60b9e8d8608bed3338d78717/01.png)\n\n目前的方案是把Cubism通过RT渲染到面板上,通过控制面板透明度来达到平滑过渡效果,请问大家还有什么好的解决方案？\n\n- 提问者：黑白凌乱\n- 提问时间：2021-06-05 00:48:24\n\n## 我的回答\n\n所谓透明度“不平滑过度”，本质原因在于，原先的逻辑是 身体的每一个小部分单独应用cubism_ModelOpacity之后，各个部分再进行混合。核心代码如下：\n\n![image.png](assets/60b9e8d8608bed3338d78717/02.png)\n\n身体是一部分一部分画的：\n\n![image.png](assets/60b9e8d8608bed3338d78717/03.png)\n\n而题主要的效果是：在渲染出整体结果之后，再对整体应用透明效果。所以， ”全身绘制之后，再使用透明度处理一次“ 这一做法是必然的。本质是身体各部分绘制完成后，要取到FrameBuffer，然后使用透明度处理一次。因此”通过RT渲染到面板上，再控制面板的透明度的做法是合理“的。\n\n所以题主的问题是，有没有更直接的方法，对这一过程进行优化。我这边还没有想到更好的优化方法，可能Builtin-RenderPipeline没有那么灵活，也或许可以考虑有没有优化的必要。\n\n- 回答时间：2021-06-05 07:30:59\n- 最后更新：2021-06-05 07:30:59\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：Shader、渲染模块、终端平台\n- 原始问题：[Live2D平滑渐变方案](https://answer.uwa4d.com/question/60b9e8d8608bed3338d78717)\n- 源页最后更新：2021-06-05 07:30:59\n"
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