Description
GTAO is an advanced screen-space implementation of Ambient Occlusion that is said to deliver the best approximation for screen-space AO, being comparable to 3D AO in some scenarios.
From the article:
"GTAO: An efficient ambient occlusion technique that matches a radiometrically-correct ambient occlusion integral, and incorporates the lost energy due to close-range indirect illumination using a simple closed-form analytical expression."
Resources:
https://www.activision.com/cdn/research/Practical_Real_Time_Strategies_for_Accurate_Indirect_Occlusion_NEW%20VERSION_COLOR.pdf
https://www.activision.com/cdn/research/PracticalRealtimeStrategiesTRfinal.pdf
Description
GTAO is an advanced screen-space implementation of Ambient Occlusion that is said to deliver the best approximation for screen-space AO, being comparable to 3D AO in some scenarios.
From the article:
"GTAO: An efficient ambient occlusion technique that matches a radiometrically-correct ambient occlusion integral, and incorporates the lost energy due to close-range indirect illumination using a simple closed-form analytical expression."
Resources:
https://www.activision.com/cdn/research/Practical_Real_Time_Strategies_for_Accurate_Indirect_Occlusion_NEW%20VERSION_COLOR.pdf
https://www.activision.com/cdn/research/PracticalRealtimeStrategiesTRfinal.pdf