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- Path: nntp.teleport.com!sschaem
- From: sschaem@teleport.com (Stephan Schaem)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: CHIP RAM speed test resul
- Date: 29 Mar 1996 02:37:25 GMT
- Organization: Teleport - Portland's Public Access (503) 220-1016
- Distribution: world
- Message-ID: <4jfid5$61g@nadine.teleport.com>
- References: <4j6jv0$1im@serpens.rhein.de> <5827.6659T112T770@mbox.vol.it>
- NNTP-Posting-Host: kelly.teleport.com
- X-Newsreader: TIN [version 1.2 PL2]
-
- Fabio Bizzetti (bizzetti@mbox.vol.it) wrote:
-
- : > They need geometry engines,
-
- : A skilled assembly programmer can avoid multiplications/divisions and all
- : these things that normal programmers learn from standard books.
-
- You just discredited yourself by this comment...
-
- On the side: on pentium PC people use float, mul take 1 cycle.
- I'm not sure, but I heard it also take 1 cycle to convert from float to int.
-
- : It would mean to blow the PC away.
-
- .... a bit earlyer in the post:
-
- : A bit useless if the CPU is slow of course, but a 40Mhz/50Mhz 68030 (finally
- : standard) is well worth of these 22mb/sec.
-
- 22meg video bandwidth and 20mhz 030 will be very far from even beying PC
- lowend when it comes out...
-
- : >texture mapping and a fast chunky framebuffer.
-
- : Yes, but dont forget that it's not so important for games, when i.e. AB3D-II
- : (not talking about BreathLess..) are so slow and bad thought (also if
- : optimized), where having the best SVGA card would make them faster of 5%-15%
- : max.
-
- geometrie engine, 3d primitive rendering, fast frame buffer will make games
- like quake run great in true color with even very slow CPU like a 386.
- If the 3d primitives support color masking nothing stop you from using
- it for any 2d type game. 100,000 polygon second mean: 100,000 arbritarie
- rotated/scaled true color sprites... You would build tiled based scroller
- with those primitive... anyway this replace the sprite HW found in the fm
- towns for example, no need for linkable sprites.
- With a geometrie engine + all the rest, doing very elaborate scrolling game
- would be a breeze.
-
- : >I.e. a Pentium and PCI graphics board.
-
- : They cost a lot, the PCI GfxBoard isn't flexible (it gains all from Pentium's
- : MIPS, that are quite more than Walkers' ones), the 3D cards *still dont exist*,
- : they will cost a lot and they aren't flexible (read: only textmap polygons,
- : a bit wasting of money for a general purpose and versatile *computer*).
-
- If you dont know the PC market dont try to judge it:
-
- You can build for ~1000$ a loaded PCI pentium system, with ~500meg meg video
- bandwidth to its 220mhz ramdac and 100+meg second bandwidth to main
- memory, the gfx processor in HW support a broad range of 2d primitive
- and HW 3d primitive support Z buffer mode, blitter can do pixel type
- conversion, blit 8-32 bit pixel including YUV from local video memory
- or memory to video and do interpolated scaling, local video bus connector
- on the video card, upto 8meg of local wram (wram also include special
- functionality to accelrate blitter functions) , 16meg of 60ns
- 64bit fast page memory upgradable to 128meg, 256 of 8ns pipeline
- burst L2 cache (upto 512k), motherboard with high performance ports,
- support for 25-33mhz PCI bus and 75-200mhz cpu clock, etc... etc... etc..
-
- If your unhappy with the local fastmode eide controler, you can get for
- 145$ a risc controler based scsi3 ultra fast PCI card that can deliver
- 20meg second to/from local mem.
-
- Need faster processing, swap the CPU, bigger res, hi refresh 1280x1024
- 24bit HW double buffered , add ram to the video card... etc...
-
- The most expansive item (not included here) is a good monitor...
-
- Stephan
-