smikes@cbnewsi.ATT.COM (steven.mikes) (01/10/90)
I have a single rgb.txt that I use on a Sun3 and an HP 9000/350, both on X11.3, yet my application displays different colors for certain values. Is this because of some color frame buffer hardware quirks or something else? The basic problem seems to be that for certain colors, the foreground color is inverted with the background color on one or the other system using the same rgb.txt values and running the same application.
jim@kanga.lcs.mit.edu (Jim Fulton) (01/29/90)
| I have a single rgb.txt that I use on a Sun3 and an HP 9000/350, both on | X11.3, yet my application displays different colors for certain values. The phosphers in monitors from different manufacturors (and frequently from the same vendor) will yield different visual results for the same RGB input values. Thus, a color database tuned for one type of monitor will often look horrible (typically very dark or hideously bright) on a different type. The original sample X rgb.txt file was derived from a database developed for the DEC VT220 (that was all that was available). The version on R4 from MIT has been tweaked to look better on Sun's, Pmax's, and HP's. Ideally one would use something like Tek HVC and make all of these problems go away.