On 3/2/16 10:45 AM, [email protected] wrote:
I've tried it on a number of machines (from the 386 era to a modern PC)
and they all just end up showing garbage when this mode is enabled. I
cannot for the life of me find a reference to this mode existing
anywhere, but I assume it must have worked on *some* SVGA chipset of
the
era since ID programmed in support for it. I'm guessing it was cut
because nothing else supported it (and because 160x200 must have looked
awful, even with lots of colors...)
VGA has analog RGB signals.
VGA card uses DAC chip, 8 bit would give the 256 color and 16 bit
would give the 65536, and 24 bit would give the 16.7 million color
depth. RAM was a big issue as well on these cards, since more memory
needed to store color info.
The one thing I would wonder is -- even if some video card had the
ability to sacrifice resolution for color depth (reconfigurable
RAMDAC?) -- were the textures and tiles in Doom supplied in true
color/16 bit color or were they 256 colors?
The graphics were only 256 colors, but the engine provided for varying
lighting levels per-sector so having more colors would allow for
better-looking rendering.
- Josh
--
Ethan O'Toole
