joel@peora.UUCP (10/25/88)
This might be a stupid question, but I was wondering if it might be
possible to simulate gray-scale on a VGA color monitor. It you
display white on a VGA monitor by using the same intensities of red,
green and blue, then it seems to me that if you decrease them all by
the same amount, then you get a less intense white. If I remember the
VGA spec right, at 640x480 you get to select 16 colors from a palette
of 16 million, with a byte apiece for Red, Green, and Blue. If you
used F0F0F0 for one color, then E0E0E0, for the next etc., then it
seems to me that this would give you 16 levels of gray, in effect
simulating a monochrome display.
Of course I know that VGA monochrome monitors already exist, but the
color ones appear more common, and it would be nice to be able to use
the same techniques on both.
It seems to me that this technique would be useful for displaying
scanned pictures, and would allow anti-aliasing to be used to improve
the appearance of characters on-screen, as well as graphics displays.
So can anybody tell me if this idea makes sense?
--
Joel Upchurch/Concurrent Computer Corp/2486 Sand Lake Rd/Orlando, FL 32809
joel@peora.ccur.com {uiucuxc,hoptoad,petsd,ucf-cs}!peora!joel (407)850-1040