Screen Space Directional Occlusion (SSDO)

Why SSDO?

Color Bleeding

Color Bleeding

SSDO exploits the rendered direction illumination not from an RSM, but from the camera.

与 SSAO 刚好相反(source of indirect illumination)

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/ec2b2215-c592-46cb-a199-33269dd70488/Untitled.png

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/b50817d7-6816-47bd-87f6-cef970aee14f/Untitled.png

Similar to HBAO, teest sampels' depths in a hemisphere:

https://s3-us-west-2.amazonaws.com/secure.notion-static.com/eeacadef-0052-4f45-9e52-fb50c84698f1/Untitled.png