Portal Textures: Texture Flipbooks in Architectural Models
نویسنده
چکیده
This paper outlines a method to use (compressed) flipbooks of textures to represent portals in 3D models. A portal is a generalization of windows and doors. It connects two adjacent cells (or rooms). This method accelerates portal visibility culling by reducing the depth of portal sequences to one. Each portal of the current cell that is some distance away from the viewpoint is rendered as a texture. The portal texture returns to geometry when the viewpoint gets too close to the portal. This way all portal sequences (not too close the viewpoint) have a depth complexity of one. The size of each texture and distance at which the transition occurs is configurable for each portal.
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تاریخ انتشار 1996