Graphics monitor color problems

Malcolm Williamson malcolm at
Tue Mar 18 10:23:26 EST 1997

The Xdriver is hardwired for 256-color displays (you gotta remember the 
age of some of this code - which isn't necessarily a bad thing!). 
However, there is source code floating around (on the GRASS ftp site??) 
for a modified Xdriver that will work on 24-bit displays, though still 
only showing 256 colors. We have used this extensively with 24-bit X 
emulation software (eXceedNT) and Sun 24-bit displays. If you can't 
locate it, drop me a note.
Malcolm D. Williamson - GIS Specialist           E-mail: malcolm at
Center for Advanced Spatial Technologies      Telephone: (501) 575-6159
Ozark Rm. 12                                        Fax: (501) 575-5218 
University of Arkansas              
Fayetteville, AR 72701

On Tue, 18 Mar 1997 adavis at wrote:

> Is the requirement for 256 color displays hard wired?  Can I recompile it
> for other resolutions?  Would this be not an advantage?  
> I am planning to build a system, one major purpose for which is to run
> GRASS.  
> On Mar 17, Malcolm Williamson wrote
> > Brian,
> > The GRASS Xdriver only works with 256 color displays. Make sure that your 
>                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> -- 
>  Alan Eugene Davis      Marianas High School      15o 8.8'N       GMT+10        
>  adavis at      AAA 196 Box 10,001        145o 42.5'E             
>                         Saipan, MP  96950                        
>                         Northern Mariana Islands       
> "An inviscid theory of flow renders the screw useless, but the need
> for one nonexistent."            ------ Lord Raleigh

More information about the grass-user mailing list