At 12:45 �� 10/11/2001 +0000, you wrote: >Joachim Van der Auwera wrote: > > > > > I've started to have a look at this. QPC (in 65536 colour mode, i.e. > > > Mode32) stores the colour values in the screen memoey as follows: > > > > > 16 bits per pixel > > > gggrrrrrbbbbbggg > > > > On the Q40, it is gggggrrrrrbbbbbl > > where l is a luminance value, You in fact use 6 bits for each of the > > colours, and when the lower bit is set on two or three of the colours, then > > l is true. Then build the colour using the most significant five bits only > > (for some demo code, look in the PROforma sources, pf_driv_QVME_c and the > > the ColourNearest routines. > > > > I personally don't think there is any point in having 24 bits colour > > precision except for some applications. We don't come near to having > > anything which properly uses 16 bit colour. > >And this is a shame, although I would agree the image on screen may not >benefit a great deal from the increased colours it would be nice to be >able to print out to a printer that can use 24 bit colour
I do not agree with you Bill :-) Extra colours usually make up for loss in resolution. (ie they fool the eye). The more precisely you can get to a shade, the most the human brain tends to disregard deficiencies in resolution. (A good example is sub-pixel (AND whole pixel) Anti-Aliasing where by using extra shades you make up for jagged edges etc) Additionally we DO have apps that use properly 16 bit colour. Jerome's SpriteED, PovRay, Claus' 3D editor/viewer, Photon, PhotoQL, and of course ProWesS :-) (And that's not counting my crappy software I currently make :-) >and I'm not >sure we can do this if we can't display them ( I'm not sure we can do >this even if we could display them). Yes we can. Linedesign for example already allows this and there's no problem with PovRay either for example (allthough to print you have to get through a different platform in order to achieve nice results...) But nonetheless, it is feasible. >IIRC RWAP are doing something about Epson high colour/resolution >drivers. Rich is probably working on some magic again :-) >Of course I could be talking a lot of bull hear, if so feel free to say >so - I can take it (;-) > >al the best - Bill Phoebus
