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Some interesting passages: Designed to enable a new class of realistic and highly interactive 3D games, Voodoo Graphics offers expanded capabilities above Alliance ProMotion AT3D beyond the basic 3D functionality that will be found in commodity Windows and multimedia accelerators.

Major consumer and coin-op OEMs and developers have announced support for the chipset. Alliance ProMotion AT3D support we're receiving from the industry indicates our course of action is the right one. In the coin-operated entertainment market Data East and Jaleco have announced support and are developing next generation arcade games utilizing Voodoo Graphics.

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  • Specifications
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Voodoo Advantage "All of the graphics processors that have Alliance ProMotion AT3D introduced for the PC barely meet the basic requirements for 3D," said Gary Tarolli, vice president and chief scientist, 3Dfx Interactive. When combined with our performance capabilities developers can produce really cool, interactive game experiences.

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To achieve elementary 3D functionality, a graphics chip needs to support perspective correct Alliance ProMotion AT3D with point sampled texture mapping, Z- and double-buffering, Gouraud shading capabilities and standard VGA resolution. In addition, the chipset delivers realistic imagery through sub-pixel correction, alpha blending, and anti-aliasing. Most importantly however, unlike other multimedia accelerators that suffer significant performance degradation when available Alliance ProMotion AT3D features are used, Voodoo Graphics was designed to simultaneously offer all of these features at real-time frame rates.


Voodoo Graphics also supports special effects for even greater game impact. Reality check AT3D arrived in summer and Alliance was showing it off as a true second generation 3d accelerator.


Any 3d rendering scenario should be performed in one pass. I am of course testing pure AT3D board.

3dfx From Voodoo Graphics to VSA and beyond

Specifications promised a fine piece of 3D accelerator, press announcement and Alliance ProMotion AT3D would make you think you cannot go wrong. Big numbers, triangle setup, free per-pixel perspective correction, all the texture formats and blending operations supported, bit video engine and bit memory bus. And then you fire up the card, play games and everything is broken. Many people often say something in Alliance ProMotion AT3D 3D chip is broken, dissing the likes of TridentRage or even Riva But only after you see AT3D in action, you will know how much broken can things be.


It is not only the monochrome dynamic lighting or stipple patterns used for all but one transparency mode. Even specular highlights are done via stipple mask. Alliance ProMotion AT3D texture formats from palletized up to are supported.

Alliance Press Release

True color textures are full speed and true Alliance ProMotion AT3D buffer is also possible with a small performance penalty. However, at such depth only palletized textures may be blended "properly".

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4KUS DRW-3S167X3Dfx Voodoo Rush (Voodoo Graphics + Alliance ProMotion -AT25 or Macronix MX 86251FC)

And since AT3D does not use system memory there is with 4 MB little Alliance ProMotion AT3D for true color rendering at higher resolutions. Could it mean AT3D is tiling the scene? Frankly, I have no idea, datasheet also mentions Z-buffer compression, but the card does not behave like if it has more memory than others.

Gouraud shading is done full speed and geometry looks perspectively ok. Texturing however, is so warped it turns your accelerated games into chaos barfed all over your display.

Perspective correction might have been very well implemented without performance penalty, but somehow at the end all important textures are not adjusted. It reminds me of certain quadrilateral texturing chip trying to render triangles. Their Alliance ProMotion AT3D line of 2D graphics also did not fail, but Alliance ProMotion AT3D not exactly famous either AT3D arrived in summer and Alliance was showing it off as a true.

1st and last company 3D card with very bad drivers making broken images in most games. Zaatharen´s cards: Super Grace VPSuper.

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