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Luma Based Ambient Occlusion is a full-screen image effect that simulates occlusion based solely on color information.
It's aimed at 2D scenes, where no depth information is available, providing some sort of depth shading or relief feeling to flat 2D images.
It can also be used in 3D scenes although, in this case, a depth-based AO solution like HBAO is recommended (you can combine both and experiment with results).
LBAO works great with Beautify as well.
** Features **
- Works with orthographic and perspective cameras.
- Depth independent effect, compatible with 2D, transparent objects and particles.
- Color bleeding.
- Directional occlusion control.
- Demo scene included.
** Compatibility **
- Supports built-in and URP pipelines.
- URP version requires Unity 2021.3+.
- Also supports the new URP Render Graph.
** Usage **
To use this effect:
- In built-in pipeline, just add LBAO script to your main camera and customize its parameters.
- In URP, add "LBAO Render Feature" to the 2D or Universal Renderer Feature list, select or create a global Volume in your scene and add a LBAO to customize the settings as you like.
基于Luma的环境光遮挡是一种全屏图像效果，仅基于颜色信息模拟遮挡。
它针对的是没有深度信息的2D场景，为平面2D图像提供某种深度着色或浮雕感。
它也可以在3D场景中使用，但在这种情况下，建议使用基于深度的AO解决方案，如HBAO（您可以将两者结合并对结果进行实验）。
LBAO与Beautify配合得也很好。
**特点**
-适用于正交和透视相机。
-与深度无关的效果，兼容2D透明对象和粒子。
-颜色出血。
-定向遮挡控制。
-包括演示场景。
**兼容性**
-支持内置和URP管道。
-URP版本需要Unity 2021.3+。
-还支持新的URP渲染图。
**使用方法**
要使用此效果，请执行以下操作：
-在内置管道中，只需将LBAO脚本添加到主摄像头并自定义其参数。
-在URP中，将“LBAO渲染功能”添加到2D或通用渲染器功能列表中，在场景中选择或创建全局体积，并添加LBAO以根据需要自定义设置。
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