Performance for perspective correct, filtered, MIP mapped, Z-buffered, alpha-blended, fogged, textured 50-pixel triangles rendered on a Pentium-90 PCI system.
Depth complexity measures the rendering complexity of a scene. It's the average number of times a pixel is rendered per frame. For most 3D games, the depth complexity is between 2 and 4. A game with a depth complexity of 3 at 640x480 at 30Hz requires fill rates of at least 27 Megapixels/sec. An entry level Obsidian coupled with an Intel pentium-90 or PowerPC 603 delivers over 90 Megapixels/sec textured fill rate and over one million textured triangles/sec. Obsidian provides the fill-rate performance required for games with high depth complexity to break the 30Hz barrier. The others just don't do it.
Last Updated: May 30th, 1997