🚀 go-pugleaf

In article <zisk-111292153206@macne010.boston.us.adobe.com> zisk@adobe.com  
(Stephen Zisk) writes:
> In article <MSL9EGP@math.fu-berlin.de>, beck@irzr17.inf.tu-dresden.de
> (Andre Beck) wrote:
> > How do I get a 1280x1024 pixel image that uses less than 256 colors
> > on the display WITHOUT any dithering ? In other words, how can I force
> > the XDPS system to allocate new colors ?
> 
> Preface: I am not a DPS expert, but I do have a manual in front of me,
> so here goes, and watch out for the trees!
> ...Bunch of other stuff deleted...

The answer is that in general you can't. The image operator as implemented in  
DPS/X does not pay attention to "actual" colors described in Stephen's  
message. All rendering other than images use these colors. By the way, the  
"actual" parameter is not a boolean as suggested in Stephen's message - it is  
a count. Finally, if you do need to use "actual" colors I suggest that rather  
than use the actual parameter to the XDPSCreateContext call, that you look at  
the setXrgbactual operator. It gives better control of the allocation of  
"actual" colors.