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Ssao
 

Ssao

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ssao

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    Ssao Ssao Presentation Transcript

    • Screen Space Ambient Occlusion Inferred rendering #2 http://ozlael.egloos.com/
    • Previous : Deferred Rendering + + =
    • Previous : Pre-light Pass
    • What is SSAO? ● First in Finding Next Gen( Martin Mittring, 2007 SIGGRAPH) ● StarCraft2, Uncharted2, Crysis ... ● 사실적인 그림자 효과 라이팅 ● 전역 조명 과정에서 한 점의 차폐 양 ● AO in Screen Space ● And HBAO, SSDO ...
    • Whai is SSAO?
    • Whai is SSAO?
    • Why Screen Space? ● Deferred(or Inferred) Rendering 의 Depth Buffer ● 3D -> 2D ● 사물의 수와 독립적 ● 가시 영역내의 것만 계산 ● 불필요한 연산 제거
    • How SSAO? View
    • How SSAO? View
    • How SSAO? View
    • Random Noise Vector
    • Gaussian Filter VS Bilateral FIlter
    • Gaussian FIlter input * output * * Same Gaussian kernel everywhere.
    • Bilateral FIlter input * output * * The kernel shape depends on the image content.
    • Bilateral FIlter ● 가중치는 샘플링 할 점과의 연속성 ● Image base processing: 가중치를 어떻게 주느냐가 관건 ● 3D: Normal 및 Depth 활용 가능
    • Dual Resolution SSAO ● For geometry smaller then 2 pixels genera tes shimmering ● Shimmering due to Half Resolution
    • Dual Resolution SSAO