34 lines
1000 B
Markdown
34 lines
1000 B
Markdown
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# Extraction
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**命名空间**: `XCEngine::Rendering`
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**类型**: `submodule`
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**头文件目录**: `engine/include/XCEngine/Rendering/Extraction/`
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**描述**: Rendering 场景提取层，负责把 `Scene` 和 `CameraComponent` 压平成 `RenderSceneData`、`RenderCameraData` 与 `VisibleRenderItem`。
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## 概览
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`Extraction` 解决的是“场景语义如何转换成渲染语义”。
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当前它由两个公开入口组成：
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- [RenderSceneExtractor](RenderSceneExtractor/RenderSceneExtractor.md)
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- [RenderSceneUtility](RenderSceneUtility/RenderSceneUtility.md)
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## 当前职责
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- 选择当前应使用的相机
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- 提取主方向光和 additional lights
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- 遍历场景层级并收集 `VisibleRenderItem`
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- 构建 `RenderCameraData`
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## 相关文档
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- [Rendering](../Rendering.md)
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- [FrameData](../FrameData/FrameData.md)
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- [Execution](../Execution/Execution.md)
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- [Scene Extraction And Builtin Forward Pipeline](../../../_guides/Rendering/Scene-Extraction-And-Builtin-Forward-Pipeline.md)
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