On Wed, 13 Jun 2001 17:57:32 +0200, Peter J. Holzer wrote:
>720x348, most home computers 320x200, and the Atari ST and Amiga (a
>little later) 640x400. 

Actually, the Amiga had several resolutions, of which the most useful for
those of us doing raytracing on one were 320x200 (HAM) and 320x400 (interlaced
HAM).  The only way to get 640x400 was to run 16 colors or less (though 
unlike PC hardware, the 16 colors were entirely arbitrary choices, and 
separate programs could have different palettes on the screen at the same
time, with some caveats.)

Later, someone (NewTek?) came up with a way to display 12-bit full-color
images in 640x480 mode by doing some nasty stuff with the video coprocessor,
but even that was limited to 16 colors per scanline.

-- 
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbt 1}hollow interior{media{emission T}}finish{
reflection.1}}#end Z(-x-x.2y)Z(-x-x.4x)camera{location z*-10rotate x*90}

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