“IMPACT (computer graphics)”的意思、由来-开放百科全书

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IMPACT (computer graphics)

释义

References

IMPACT (sometimes spelled Impact) is a computer graphics architecture for Silicon Graphics computer workstations. IMPACT Graphics was developed in 1995 and was available as a high-end graphics option on workstations released during the mid-1990s. IMPACT graphics gives the workstation real-time 2D and 3D graphics rendering capability similar to that of even high-end PCs made well after IMPACT's introduction. IMPACT graphics systems consist of either one or two Geometry Engines and one or two Raster Engines in various configurations.^[1]

IMPACT graphics consists of five graphics subsystems: the Command Engine, Geometry Subsystem, Raster Engine, framebuffer and Display Subsystem. IMPACT Graphics can produce resolutions up to 1600 x 1200 pixels with 32-bit color^[2] and can also process unencoded NTSC and PAL analog television signals.

IMPACT graphics subsystems come in three configurations for SGI Indigo2 IMPACT workstations: Solid IMPACT, High IMPACT, and Maximum IMPACT. The equivalent configurations also exist for the SGI Octane workstation but are referred to as SI, SSI, and MXI (I-series). Later Octane workstations used a similar configuration but with updated ASIC chips and are referred to as SE, SSE, and MXE (E-series). IMPACT uses Rambus RDRAM for texture memory.^[3]

The IMPACT graphics architecture was superseded by SGI's VPro graphics architecture in 1997.

References

1. ^{{cite web|url=http://www.futuretech.blinkenlights.nl/i2info.html#3.3|title=Later (Newer) Indigo2 Technologies|accessdate=2016-04-13}}
2. ^{{cite web|url=http://sgistuff.g-lenerz.de/graphics/impact.html|title=Impact graphics options by Gerhard Lenerz|archivedate=2005-01-28|archiveurl=https://web.archive.org/web/20050128090515/http://sgistuff.g-lenerz.de/graphics/impact.html|accessdate=2016-04-13}}
3. ^{{cite web|url=http://www.futuretech.blinkenlights.nl/octnarch.html|title=Octane Architecture|accessdate=2016-04-13}}

3 : Computer graphics|Graphics chips|SGI graphics

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