Computer Graphics Forum

Object-Space Visibility Ordering for Point-Based and Volume Rendering

C. Hofsetz, N. Max, R. Bastos

Abstract:
This paper presents a method to accelerate algorithms that need a correct and complete visibility ordering of their data for rendering. The technique works by pre-sorting primitives in object-space using three lists (one for each axis: X, Y and Z), and then combining the lists using graphics hardware by rendering each list to a texture and merging the textures in the end. We validate our algorithm by applying it to the splatting technique using several types of rendering, including point-based rendering and volume rendering. We also detail our hardware implementation for volume rendering using point sprites.

I.3.3 Computer Graphics: Picture/Image Generation-Viewing Algorithms, I.3.3 [Computer Graphics]: Display algorithms

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