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Re: Really Big Colour Code: 117313504
avatarJanuary 11, 2013 04:06PM
This has historically proven contentious, but in my opinion (and as the spec is currently worded), you don't need to worry about either dithered colors or any direct colors other than ones beginning with 0x2. Color dithering was an extremely messy solution to a technical limitation which no longer exists. Nowadays, the dithered color range conflicts with LDConfig !COLOUR definitions, so if you support dithers, make sure to check for an LDConfig code first, as they have precedence.

Also, direct colors based on dither algorithms were never standard. They passed about by obscure tribal knowledge. I seem to have even missed 0x6 and 0x7, as my code doesn't even mention them.

If you really must support dithers, my C code to calculate RGB for dithered colorcodes is here, on Line 273. You even get bonus color commentary with the code.

Allen
SubjectAuthorViewsPosted
Really Big Colour Code: 117313504 Eric Himbeault805January 11, 2013 08:32AM
Re: Really Big Colour Code: 117313504 Travis Cobbs299January 11, 2013 09:14AM
Re: Really Big Colour Code: 117313504 Travis Cobbs277January 11, 2013 09:17AM
Re: Really Big Colour Code: 117313504 Eric Himbeault294January 11, 2013 01:49PM
Re: Really Big Colour Code: 117313504 Travis Cobbs263January 11, 2013 02:38PM
Re: Really Big Colour Code: 117313504 Allen Smith318January 11, 2013 04:06PM
Re: Really Big Colour Code: 117313504 Travis Cobbs326January 11, 2013 04:49PM
Re: Really Big Colour Code: 117313504 Alex Taylor304January 12, 2013 05:38AM
Re: Really Big Colour Code: 117313504 Michael Heidemann296January 12, 2013 04:05PM
Re: Really Big Colour Code: 117313504 Alex Taylor310January 13, 2013 04:05AM
Re: Really Big Colour Code: 117313504 Michael Heidemann290January 13, 2013 10:35AM
Re: Really Big Colour Code: 117313504 Eric Himbeault272January 14, 2013 08:21AM
Re: Really Big Colour Code: 117313504 Roland Melkert380February 11, 2013 11:13AM
Re: Really Big Colour Code: 117313504 Michael Heidemann308February 11, 2013 02:00PM
Re: Really Big Colour Code: 117313504 Travis Cobbs331February 11, 2013 02:01PM
Re: Really Big Colour Code: 117313504 Allen Smith301February 11, 2013 02:29PM
Re: Really Big Colour Code: 117313504 Travis Cobbs296February 11, 2013 03:27PM
Re: Really Big Colour Code: 117313504 Travis Cobbs312February 11, 2013 03:30PM
Re: Really Big Colour Code: 117313504 Allen Smith309February 11, 2013 04:36PM
Re: Really Big Colour Code: 117313504 Martin James329February 12, 2013 12:51AM
Re: Really Big Colour Code: 117313504 Roland Melkert577February 12, 2013 11:43AM



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