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Ambient Occlusion

Ambient Occlusion is how exposed each point in a scene is to ambient lighting. It's effect is that it darkens darkens enclosed and sheltered areas of the scene.

VXAO (Voxel Ambient Occlusion ) - 2016



NVIDIA HBAO+ - 2013



Scalable Ambient Obscurance - 2012


HDAO (High Definition Ambient Occlusion) - 2009

HBAO (Image-Space Horizon-Based Ambient Occlusion) - 2008


SSAO (Screen Space Ambient Occlusion) - 2007
Each full screen pass sample the depth around each pixel and a darkening value is computed based on depth differences. Sampling is done randomly in a sphere around each pixel.

Accessibility Shading - 2002


Large scale ambient occlusion: introduction

Study Notes: Improved Ambient Occlusion

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