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Politics : Formerly About Advanced Micro Devices -- Ignore unavailable to you. Want to Upgrade?

To: Kevin K. Spurway who wrote (32282)	5/1/1998 7:35:00 PM
From: Ali Chen	Read Replies (1) \| Respond to of 1572095

Kevin, re <at what resolution, Voodoo2, and PCI limits> The resolution of realistic 3D-images is not a main concern, as some technically challenged persons are thinking around. As you know, the resolution of VCR is about 270x250 but no one complained too much about Blockbuster VHS quality, and everyone enjoys home movies at standard 24 fps. The real quality of Voodoo cards comes from smart implementation of many digital effects: * Perspective corrected texture mapping * Bi-linear and tri-linear texture filtering * Integer and floating point Z-buffer * Sub-pixel and sub-texel correction * Bump Mapping * Gouraud shading * texture modulation * Full 24-bit rendering, dithered to 16-bit * compressed texture formats * alpha-blending and fogging effects.. Even PII-1500MHz will cream its pants to provide all these goodies in real time without Voodoo. However, with good artistic quality of 3D-models with reasonable triangle approximations, any P-200 could supply the Voodoo cards with coordinate transformations at the movie-quality 24fps, with absolutely no problem with PCI bandwidth. The typical control flow is 64 bytes per triangle; if you take 10,000 triangles in a scene (much more than in the current Quake game), at 25fps it makes about 16MB/s, or 8 times below the PCI bandwidth. The K6-3D will do it like a piece of cake, including decent game control. Have a nice weekend, Ali