Pixel compounds are similar to 2D compounds, but the frusta of the source rendering units are modified so that each unit renders an evenly distributed subset of pixels. Pixel compounds are ideal for purely fill-limited applications such as volume rendering and raytracing.
Pixel compounds provide very good scalability for fill-limited applications, since the rendering load is ideally distributed.
Any Equalizer application can benefit from Pixel compounds. OpenGL functionality which is influenced by the raster position will not work correctly with pixel compounds, or needs at least special attention. Among them are: lines, points, sprites, glDrawPixels, glBitmap, glPolygonStipple.
3D model courtesy of AVS, USA.
