3Dfx Voodoo: un mito che non tramonta

3Dfx Voodoo Banshee


3dfx_voodoo_banshee

Fu nel giugno del 1998 che 3Dfx presentò la Voodoo Banshee, il primo chipset 3dfx (nel Voodoo Rush la parte 2D era un prodotto di terzi) ad implementare sia l’accelerazione 2D sia l’accelerazione 3D. Nell’ottobre dello stesso anno vi fu il primo scontro diretto con la concorrente NVIDIA Corporation con una controversia legale riguardante la tecnologia del Multi texturing.

Specifiche tecniche:

  • 3dfx Voodoo Banshee chipset
  • 16MB EDO DRAM, 100MHz 10ns
  • AGP 1x interface
  • True colour 250MHz RAMDAC
  • Maximum 2-D Graphics Resolution 1920×1440
  • Maximum colors 16.7 Millions
  • 3D standard supported: Direct3D, and in addiction OpenGL and Glide

Voodoo 2 3D core:

  • Highest performance in single chip
  • Stunning visual quality
  • Advanced features at full performance
  • Largest game base
  • 3D in a window support
  • Glide support
  • Optimized Direct3D support
  • Renown compatibility
  • 128-bit 2D engine
  • All Windows GDI in hardware
  • All 256 ROPS with tertiary functions
  • Hardware polygon generation
  • Near theoretical maximum performance in NT benchmarks

128-bit VGA core:

  • World’s first 128-bit VGA
  • DOS speed beyond belief
  • Fully IBM 8514 compliant
  • 128-bit memory interface
  • 4 to 16MB SGRAM/SDRAM
  • 100/125MHz operation
  • Block write with SGRAM
  • Simultaneous tiled and linear memory support
  • Optimized for Pentium II
  • Dual command buffers
  • Full support for write combine
  • Patent pending technology for command reordering

3D feature set:

  • Integrated Voodoo2 pixel unit and single texture unit
  • 100/125 Mpixel/s fill rate
  • HW triangle setup capable of 4M tri/s
  • On-chip high speed texture cache unit
  • High precision 16-bit floating point Z-buffer
  • Tiled memory architecture
  • Transparency and chroma-key with color mask
  • Alpha blending on source and destination pixels
  • Dynamic environment maps
  • 24-bit color dithering to native 16-bit RGB
  • 16-bit color “expansion” to display near 24-bit quality
  • Per-pixel table based fog/ haze effects
  • Per-pixel MIP mapping, tri-linear filtering
  • Full scene, edge anti-aliasing
  • Bump mapping
  • Optimized for local memory texturing
  • Sub-pixel and sub-texel correction
  • Perspective corrected 3D texture mapping
  • Palettized and compressed textures

2D feature set:

  • 100/125MHz 128-bit GUI accelerator
  • Hardware Bresenham line drawing engine
  • Hardware polygon generation and fill engine
  • Full 256 Raster Operations in hardware

Other feature:

  • PCI 66MHz and AGP with sideband signaling
  • High speed memory with duplicate RAS support
  • Dual command FIFO for CPU parallelism
  • 256-bit internal buffering for maximum memory efficiency
  • PC ’97 and PC ’98 compliant
  • 250 MHz RAMDAC with three independent PLLs

Potete seguire la discussione sul thread ufficiale nel forum.

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