Colors: Difference between revisions
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[[File:Pal perfect.png|thumb|All 65536 (2^16) possible NeoGeo colors.]] | [[File:Pal perfect.png|thumb|All 65536 (2^16) possible NeoGeo colors.]] | ||
Each color component (red, green or blue) on the NeoGeo is coded with '''6 bits with 1 common bit''' (dark bit), effectively making full use of the 16 color definition bits (65536 colors palette). | |||
=Format= | |||
A color word is composed in the following manner: | |||
{{Template:16BitRegister|[[Video DAC|Dark bit]]|1|R0|1|G0|1|B0|1|R4|1|R3|1|R2|1|R1|1|G4|1|G3|1|G2|1|G1|1|B4|1|B3|1|B2|1|B1|1|}} | {{Template:16BitRegister|[[Video DAC|Dark bit]]|1|R0|1|G0|1|B0|1|R4|1|R3|1|R2|1|R1|1|G4|1|G3|1|G2|1|G1|1|B4|1|B3|1|B2|1|B1|1|}} | ||
Which can also be seen in a simpler way: | |||
{{Template:16BitRegister|LSBs|4|Red MSBs|4|Green MSBs|4|Blue MSBs|4}} | |||
With: | |||
* <span style="color:red;">Red</span>: R4~0 | |||
* <span style="color:green;">Green</span>: G4~0 | |||
* <span style="color:blue;">Blue</span>: B4~0 | |||
* The dark bit, used as a common LSB for the 3 components | |||
The upper 4 bits of each component fit in 3 nibbles, making it easy to write or guess color values ($0F00 is red, $00F0 is green...). | |||
=Color depth= | |||
The NeoGeo's 16 bit color depth [[Comparison_with_other_systems|is close]] to the 15 bit depths of the SNES, GBA and Saturn consoles. | |||
<gallery widths=240 heights=192> | |||
File:Hsv_full.png|Full 24 bit HSV gradient | |||
File:Hsv_neogeo.png|Full NeoGeo gradient (16 bit) | |||
File:Hsv_neogeo_nodak.png|Without using the dark bit (like some image converters) | |||
File:Hsv_neogeo_4bit.png|Without using the whole upper nibble (12 bit) | |||
</gallery> | |||
=Converter= | =Converter= | ||
Revision as of 02:14, 15 March 2017
Each color component (red, green or blue) on the NeoGeo is coded with 6 bits with 1 common bit (dark bit), effectively making full use of the 16 color definition bits (65536 colors palette).
Format
A color word is composed in the following manner:
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Def | Dark bit | R0 | G0 | B0 | R4 | R3 | R2 | R1 | G4 | G3 | G2 | G1 | B4 | B3 | B2 | B1 |
Which can also be seen in a simpler way:
| Bit | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| Def | LSBs | Red MSBs | Green MSBs | Blue MSBs | ||||||||||||
With:
- Red: R4~0
- Green: G4~0
- Blue: B4~0
- The dark bit, used as a common LSB for the 3 components
The upper 4 bits of each component fit in 3 nibbles, making it easy to write or guess color values ($0F00 is red, $00F0 is green...).
Color depth
The NeoGeo's 16 bit color depth is close to the 15 bit depths of the SNES, GBA and Saturn consoles.
-
Full 24 bit HSV gradient
-
Full NeoGeo gradient (16 bit)
-
Without using the dark bit (like some image converters)
-
Without using the whole upper nibble (12 bit)
Converter
Enter 24 bit RGB values to get the NeoGeo color word.