CompuServe Thread

#VGA vs. AMIGA gfx

12 messages in this thread
#69379From: R. NiklosOct 12, 1989 12:44 AM
Hi All, I have been arguing lately with a friend about VGA graphics verses Amiga graphics and I need some good things I can throw his way when we are arguing about it. He is telling me that VGA is just as good as anything the AMiga can do. Any help would be appreciated! Russ Niklos
#69418From: Bob RakoskyOct 12, 1989 7:17 PM
Russ, VGA graphic quality is quite good, and in a number of ways is better than the Amiga graphic capabilities, as long as one is talking strictly in terms of a static display of a graphic image. Once we get into the area of changing images, then there really is no contest. Because of the abilities of the custom chips in the Amiga, graphics data can be manipulated much faster, and at the same time that other processing is occurring. On a VGA equipped machine, then the CPU has to perform all of the memory moving operations required for changing the display image. With the amount of memory involved to create the full-screen display (or even a partial screen display), that's an awful lot of CPU cycles being spent for display support. The Amiga software is able to use the blitter to allow most of the memory manipulation processes to occur with practically no work (other than setting up the blitter calls) required of the CPU. Consequently, as soon as you start talking about animation-type displays (and/or games) where the displayed images need to be modified quickly, the VGA must plead "no contest" or at least beg for a '386 to provide the needed CPU horsepower. Hope this helps….BobR
#69426From: R. NiklosOct 12, 1989 8:55 PM
Bob, Thanks alot for the VGA vs. Amiga Grafics info, it helped alot. R. Niklos
#69474From: Don Curtis/SYSOPOct 13, 1989 12:50 AM
Tell your friend to put 4096 colors on the screen at once…in any resolution. Your Amiga can do it…he can't. Don
#69512From: John PendergrassOct 13, 1989 12:41 PM
yEAH, but then his friend will say that he can get 256 shades for grey scale. Which I dearly wish we could do… oh well… –jp–
#69591From: Don Curtis/SYSOPOct 13, 1989 11:37 PM
John, So can we if you want to use a monochrome monitor. Don
#69513From: Ethan SolomitaOct 13, 1989 1:22 PM
One other thing about Amiga vs. VGA. Assuming the super-VGA cards, it has 256 out of 16.7 million colors. The Amiga has 4096 out of 4096. VGA gets better shading within the same color but if you want shading AND several different colors the Amiga wins out. — Ethan
#69627From: Ben A LottOct 14, 1989 7:43 AM
Most VGA and super VGA cards have 262,000 colors and 64 grayscales none of the VGA software I've seen has supported a pallete of 16.7 mill Ben
#69559From: Ray LewisOct 13, 1989 8:08 PM
Plus: 256 colors on the screen is nice, but, for some images, it can't tough the ability to handle 4,096 on the screen at once. OTOH – the VGA pallete has finer gradations of color, and the capacity of higher resolution. So, it depends on what you want to do. Ray Lewis
#69601From: John PendergrassOct 14, 1989 12:15 AM
But of course one can do the Sliced scan line technique and get the high res and the 4096 colors, right? Since the color palette can be changed at scan lines, high-res images (640×400 incl overscan) can contain a separate 16 colors per line. (ala Broadcast Titler) What I wonder is why paint programs haven;t discovered this yet? or GIF converters? Maybe we will need to wait for the next generation of paint software? ttfn –jp–
#69646From: Ray LewisOct 14, 1989 12:26 PM
Well, sliced ham exists for display and GIF conversion, but not at 640 horizontal resolutions. I'd like to see the Broadcast Titler approach used more often, because, as much as I like HAM pix, 320 horizontal doesn't really make it many times. Ray Lewis
#69948From: Gabe J. FederOct 16, 1989 1:29 PM
Yeah, and then there's the issue of price. You have to pay over $650 for a decent VGA/Multisync combo — could get a 500 for that amount! –Gabe