Difference between revisions of "Palette"
From Sonic Retro
(Created page with 'Surely the number of colours possible on the Megadrive is somewhat less than 1536? That number assumes that every shadow/highlght hue is distinct from a regular hue, but followin…') |
|||
| (5 intermediate revisions by 3 users not shown) | |||
| Line 1: | Line 1: | ||
Surely the number of colours possible on the Megadrive is somewhat less than 1536? That number assumes that every shadow/highlght hue is distinct from a regular hue, but following the formulae on this page the colour 048C when shadowed would be 0246, which is not a novel colour assuming you start with the initial 512 and then apply shadowing/highlighting as appropriate. [[User:Quickman|Quickman]] 15:45, 15 March 2010 (UTC) | Surely the number of colours possible on the Megadrive is somewhat less than 1536? That number assumes that every shadow/highlght hue is distinct from a regular hue, but following the formulae on this page the colour 048C when shadowed would be 0246, which is not a novel colour assuming you start with the initial 512 and then apply shadowing/highlighting as appropriate. [[User:Quickman|Quickman]] 15:45, 15 March 2010 (UTC) | ||
| + | :Yes, it's less than 1536. I once tried to work out the ''real'' amount, but I gave up after a while. Maybe I'll try again later, or perhaps someone should run the "1536 colors demo" on Gens/GS with the proper palette scaling and take a screenshot. Then with any graphic editor (e.g. Paint Shop Pro) you can easily count the number of colours from there. [[User:Nineko|Nineko]] 16:22, 15 March 2010 (UTC) | ||
| + | [[File:Mega Drive Palette.png|right]] | ||
| + | ::The palette diagram has 1471 unique colours, assuming it's accurate. - [[User:Hivebrain|Hivebrain]] 17:23, 15 March 2010 (UTC) | ||
| + | :::No, it's not, I took it ages ago with plain old Gens, which is why I recommended someone to re-run the "1536 colors demo" on Gens/GS, since GerbilSoft implemented the proper colour values. [[User:Nineko|Nineko]] 17:51, 15 March 2010 (UTC) | ||
| + | :::However the latest public version of Gens/GS doesn't implement the proper behaviour yet so I guess we'll have to wait a bit more. Just saying, in case someone went ahead and took a screenshot with it. [[User:Nineko|Nineko]] 18:03, 15 March 2010 (UTC) | ||
| + | :The diagram is accurate inasmuch as it represents the correct number of level changes for 9-bit colour. (There's no 100% accurate mapping of Megadrive colour onto a 24-bit colourspace. Oscilloscope measurements of the VDP's output give 0V for 0000, and 4.7V for 0EEE, with more-or-less-equal steps between adjacent colour levels.) I measure 512 unique colours in the central column, and 1471 colours in the whole thing. (Incidentally, we might want to replace these colour-gamut screenshots with the images from [http://en.wikipedia.org/wiki/List_of_monochrome_and_RGB_palettes this page] - the 6-bit RGB image corresponds with the Master System gamut, the 9-bit RGB image with the Megadrive gamut and the 12-bit RGB image with the Game Gear gamut.) [[User:Quickman|Quickman]] 13:16, 26 March 2010 (UTC) | ||
Latest revision as of 09:16, 26 March 2010
Surely the number of colours possible on the Megadrive is somewhat less than 1536? That number assumes that every shadow/highlght hue is distinct from a regular hue, but following the formulae on this page the colour 048C when shadowed would be 0246, which is not a novel colour assuming you start with the initial 512 and then apply shadowing/highlighting as appropriate. Quickman 15:45, 15 March 2010 (UTC)
- Yes, it's less than 1536. I once tried to work out the real amount, but I gave up after a while. Maybe I'll try again later, or perhaps someone should run the "1536 colors demo" on Gens/GS with the proper palette scaling and take a screenshot. Then with any graphic editor (e.g. Paint Shop Pro) you can easily count the number of colours from there. Nineko 16:22, 15 March 2010 (UTC)
- The palette diagram has 1471 unique colours, assuming it's accurate. - Hivebrain 17:23, 15 March 2010 (UTC)
- No, it's not, I took it ages ago with plain old Gens, which is why I recommended someone to re-run the "1536 colors demo" on Gens/GS, since GerbilSoft implemented the proper colour values. Nineko 17:51, 15 March 2010 (UTC)
- However the latest public version of Gens/GS doesn't implement the proper behaviour yet so I guess we'll have to wait a bit more. Just saying, in case someone went ahead and took a screenshot with it. Nineko 18:03, 15 March 2010 (UTC)
- The palette diagram has 1471 unique colours, assuming it's accurate. - Hivebrain 17:23, 15 March 2010 (UTC)
- The diagram is accurate inasmuch as it represents the correct number of level changes for 9-bit colour. (There's no 100% accurate mapping of Megadrive colour onto a 24-bit colourspace. Oscilloscope measurements of the VDP's output give 0V for 0000, and 4.7V for 0EEE, with more-or-less-equal steps between adjacent colour levels.) I measure 512 unique colours in the central column, and 1471 colours in the whole thing. (Incidentally, we might want to replace these colour-gamut screenshots with the images from this page - the 6-bit RGB image corresponds with the Master System gamut, the 9-bit RGB image with the Megadrive gamut and the 12-bit RGB image with the Game Gear gamut.) Quickman 13:16, 26 March 2010 (UTC)