A New Technique for Rendering Complex Portals

Nick Lowe and Amitava Datta

This page contains videos that accompany our paper:

  A New Technique for Rendering Complex Portals
  N. Lowe and A. Datta
  IEEE Transactions on Visualization and Computer Graphics (to appear)

We will post a link to the relevant section of the IEEE website when the paper is published. We may also use this page to post images and updates on our research in this area.

The Videos


Video 1 (3.7MB): The "Cube Room" cell with a portal to the "Landscape" cell.


Video 2 (3.7MB): The "Landscape" cell with a portal to the "Cube Room" cell.


Video 3 (5.6MB): The "Landscape" cell with a portal to the "Cube Room" cell with a portal to the "Landscape" cell. The portals have associated scaling transformations such that they appear to link to a smaller version of the destination cell.


Video 4 (7.4MB): The visibility determination of two geometrically complex surfaces is handled on a per-pixel basis by the depth-buffer. Visibility determination for portals using these surfaces is handled on a per-pixel basis using the dual-depth buffer and stencil-buffer.


Video 5 (3.7MB): A continuation of video 4 in which portals to each other are added to the two destination cells.


Video 6 (22MB!): Long example showing correct recursive rendering of scenes composed of cells and complex portals.