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D2 Horizon Occlusion
D2 Horizon Occlusion
D2 Horizon Occlusion
D2 Horizon Occlusion
D2 Horizon Occlusion
D2 Horizon Occlusion
D2 Horizon Occlusion
D2 Horizon Occlusion
D2 Horizon Occlusion
D2 Horizon Occlusion
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D2 Horizon Occlusion

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  • 1. Horizon Occlusion Flow Studio 최유표 2009.07.03
  • 2. Definition 1 Map = 4 * 4 Quad Leaf 1 Quad Leaf = 4 * 4 Occluder 1 Quad Leaf = 32 * 32 Cell 1 Cell = 2m 1 Occluder = 8 Cell = 16m
  • 3. Horizon Occlusion Occluder AABB Bottom Plane * Horizon View Projection Matrix Occludee AABB Top Plane * Horizon View Projection Matrix If (Occludee < Occluder) then Culling
  • 4. Problem 2개의 점만을 사용 빈 공간이 많이 생길 수 있음 노드의 크기가 클수록 더 많은 공간이 비게 됨 Occluder나 Occludee의 크기가 작아짐 따라서 최적화의 여지가 많이 줄어들 수 있음
  • 5. Solution 모양 세분화  사각형 : 1개의 선  마름모 : 2개의 선  사다리꼴 : 3개의 선  평행사변형 : 2개의 선  For (Left Edge ~ Right Edge) Add Point
  • 6. Solution 사각형 마름모
  • 7. Solution평행사변형 사다리꼴
  • 8. SolutionBefore After
  • 9. Optimize 단계 세분화  거리에 따른 세분화  If (거리 < Threshold) then Split  높이의 비율에 따른 세분화  If (Threshold < 높이/거리) then Split  화면의 비율에 따른 세분화  If (Threshold < Pixel Ratio) then Split
  • 10. Optimize 가까운 거리

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