Luma Based Ambient Occlusion 2 (SSAO 2D)

Luma Based Ambient Occlusion is a full-screen image effect that simulates occlusion based solely on color information. It is aimed at 2D scenes where no depth information is available, providing depth shading and a relief feeling to flat 2D images. The effect can also be used in 3D scenes, though a depth-based AO solution like HBAO is recommended, and both can be combined for experimentation. It works great with Beautify. Key features include support for orthographic and perspective cameras, a depth-independent effect compatible with 2D, transparent objects, and particles, color bleeding, directional occlusion control, and an included demo scene. It supports built-in and URP pipelines including Render Graph, and Unity 2023.3 and Unity 6.