Screen Space Directional Occlusion (SSDO)

Providing realistic illumination at high frame rates is commonly achieved through approximations known as screen space ambient occlusion (SSAO). This paper discusses a related method called screen space directional occlusion (SSDO), which handles light angles better, includes at least one bounce of indirect light, works with global illumination, and requires only slightly more computational overhead. Read now: (3.93 MB | PDF)