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| − | | + | #REDIRECT [[sega:Palette]] |
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| − | A selection of colours which is used in an image. Rather than defining a colour for each individual [[pixel]] (such as in 24-bit colour images), palettes are used to link pixels to colour data by way of an index reference. Graphics in [[Sega Genesis|Megadrive]], [[Master System]], [[Game Gear]] and [[GameBoy Advance]] games all use palettes.
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| − | According to the Oxford English Dictionary, "palette" didn't appear until the 19th century. "Pallet" is the original, correct spelling. However, both are correct today, and "palette" is more commonly used.
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| − | ===Megadrive Palette===
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| − | Consists of 16 colours, each represented by two bytes (four [[Nybble|nybbles]]) in the format '''0B GR''', where B = blue; G = green; and R = red. The B, G and R can be any of the following values:
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| − | *0 = 0
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| − | *2 = 32
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| − | *4 = 64
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| − | *6 = 96
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| − | *8 = 128
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| − | *A = 160
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| − | *C = 192
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| − | *E = 224
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| − | *(and in rare cases, F = 224)
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| − | Pixels reference these 16 colours using a single nybble. '''0''' refers to the 1st palettte entry (which is normally transparent), '''1''' refers to the second entry, and so on.
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| − | ===Master System Palette===
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| − | Consists of 16 colours, each represented by eight [[Bit|bits]] (a single byte) in the format '''00BBGGRR''', where BB = blue; GG = green; and RR = red. The BB, GG and RR can be any of the following values:
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| − | *00 = 0
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| − | *01 = 85
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| − | *10 = 170
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| − | *11 = 255
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| − | As such, the highest palette value is '''00111111''', which is '''3F''' when converted to a byte.
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| − | ===Gameboy Advance Palette===
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| − | With 256 color indexes for 4 backgrounds and 256 color indexes for sprites, the [[Gameboy Advance]] uses the BGR555 format (15 bit colors). One color index contains two bytes (5 bits per component): '''0BBBBBGGGGGRRRRR'''. The [[Gameboy Advance]] also has support for RGB mode where one pixel on the screen is represented by the RGB value and not by an index, so you can use images with up to 32768 colors.
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