Difference between revisions of "FF7/Field/Palette"
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| − | === Section 4: Palette ([[User: | + | === Section 4: Palette ([[User:Terence_Fergusson|Terence Fergusson]] & [[User:Myst6re|myst6re]]) === |
The following is an overview of the palette data. | The following is an overview of the palette data. | ||
| − | ==== Section 4 Format ==== | + | ==== Section 4 Format ==== |
| − | {| | + | {| class="wikitable" |
| − | ! | + | ! Offset |
| − | ! | + | ! Size |
| − | ! style="background:rgb(204,204,204); width: 250px" align="center" | Description | + | ! style="background: rgb(204,204,204); width: 250px" align="center" | Description |
|- | |- | ||
| − | + | | 0x00 | |
| − | + | | 4 bytes | |
| − | + | | Length (Repeat of previous length header) | |
|- | |- | ||
| − | + | | 0x04 | |
| − | + | | 2 bytes | |
| − | | | + | | PalX |
|- | |- | ||
| − | + | | 0x06 | |
| − | + | | 2 bytes | |
| − | | | + | | PalY |
|- | |- | ||
| − | + | | 0x08 | |
| − | + | | 2 bytes | |
| − | + | | Number of colors in palette | |
|- | |- | ||
| − | + | | 0x0A | |
| − | + | | 2 bytes | |
| − | + | | Number of palettes | |
|- | |- | ||
| − | + | | 0x0C | |
| − | + | | (Number of palettes) * (Number of colors in palette) * 2 | |
| − | + | | Palette data | |
|} | |} | ||
| − | After the first length indicator comes another integer, also indicating length. Useless, but it's there. | + | After the first length indicator comes another integer, also indicating length. Useless, but it's there.<br /> Then two bytes; palX, useful for the PS version only (always 0).<br /> Then two bytes again; palY, useful for the PS version only (always 480).<br /> Then two bytes; number of colors in the palette (always 256).<br /> Then two bytes; number of palettes.<br /> Then the actual palette data. |
| − | |||
| − | Then two bytes; | ||
| − | Then two bytes again; | ||
| − | Then two bytes; number of colors in the palette (always 256). | ||
| − | Then two bytes; number of palettes. | ||
| − | Then the actual palette data. | ||
Each palette entry is a 16-bit color. This is unusual - normally palettes store as high quality data as possible, usually 24/32 bit. However since FF7 only ever runs in 16 bit I guess there isn't much point storing any other kind of data. Actually, the data is 15-bit (1 mask bit, 5-bit Blue, 5-bit Green and 5-bit Red). | Each palette entry is a 16-bit color. This is unusual - normally palettes store as high quality data as possible, usually 24/32 bit. However since FF7 only ever runs in 16 bit I guess there isn't much point storing any other kind of data. Actually, the data is 15-bit (1 mask bit, 5-bit Blue, 5-bit Green and 5-bit Red). | ||
| − | {| | + | {| class="wikitable" |
| − | ! style="background:rgb(204,204,204)" | + | ! style="background: rgb(204,204,204)" colspan="16" align="center" | Palette Data |
|- | |- | ||
| − | |style="background:rgb(255,255,255)" colspan="1" | Mask | + | | style="background: rgb(255,255,255)" colspan="1" | Mask |
| − | |style="background:rgb(255,255,255)" colspan="5" | Blue | + | | style="background: rgb(255,255,255)" colspan="5" | Blue |
| − | |style="background:rgb(255,255,255)" colspan="5" | Green | + | | style="background: rgb(255,255,255)" colspan="5" | Green |
| − | |style="background:rgb(255,255,255)" colspan="5" | Red (LSB) | + | | style="background: rgb(255,255,255)" colspan="5" | Red (LSB) |
|- | |- | ||
| − | |style="background:rgb(255,255,255)" align="center" | m | + | | style="background: rgb(255,255,255)" align="center" | m |
| − | | | + | | <font color="blue"> b </font> |
| − | | | + | | <font color="blue"> b </font> |
| − | | | + | | <font color="blue"> b </font> |
| − | | | + | | <font color="blue"> b </font> |
| − | | | + | | <font color="blue"> b </font> |
| − | | | + | | <font color="green"> g </font> |
| − | | | + | | <font color="green"> g </font> |
| − | | | + | | <font color="green"> g </font> |
| − | | | + | | <font color="green"> g </font> |
| − | | | + | | <font color="green"> g </font> |
| − | | | + | | <font color="red"> r </font> |
| − | | | + | | <font color="red"> r </font> |
| − | | | + | | <font color="red"> r </font> |
| − | | | + | | <font color="red"> r </font> |
| − | | | + | | <font color="red"> r </font> |
|} | |} | ||
Palettes generally contain a number of colors that's a multiple of 256. This is because the palette is split up into 256-color 'pages' internally. So the first color is page 0/color 0. Color 256 is page 1/color 0. Color 628 is page 2/color 116. You'll see why in the [[FF7/Field/Background|background]] section. | Palettes generally contain a number of colors that's a multiple of 256. This is because the palette is split up into 256-color 'pages' internally. So the first color is page 0/color 0. Color 256 is page 1/color 0. Color 628 is page 2/color 116. You'll see why in the [[FF7/Field/Background|background]] section. | ||
Latest revision as of 05:14, 23 May 2019
Section 4: Palette (Terence Fergusson & myst6re)
The following is an overview of the palette data.
Section 4 Format
| Offset | Size | Description |
|---|---|---|
| 0x00 | 4 bytes | Length (Repeat of previous length header) |
| 0x04 | 2 bytes | PalX |
| 0x06 | 2 bytes | PalY |
| 0x08 | 2 bytes | Number of colors in palette |
| 0x0A | 2 bytes | Number of palettes |
| 0x0C | (Number of palettes) * (Number of colors in palette) * 2 | Palette data |
After the first length indicator comes another integer, also indicating length. Useless, but it's there.
Then two bytes; palX, useful for the PS version only (always 0).
Then two bytes again; palY, useful for the PS version only (always 480).
Then two bytes; number of colors in the palette (always 256).
Then two bytes; number of palettes.
Then the actual palette data.
Each palette entry is a 16-bit color. This is unusual - normally palettes store as high quality data as possible, usually 24/32 bit. However since FF7 only ever runs in 16 bit I guess there isn't much point storing any other kind of data. Actually, the data is 15-bit (1 mask bit, 5-bit Blue, 5-bit Green and 5-bit Red).
| Palette Data | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mask | Blue | Green | Red (LSB) | ||||||||||||
| m | b | b | b | b | b | g | g | g | g | g | r | r | r | r | r |
Palettes generally contain a number of colors that's a multiple of 256. This is because the palette is split up into 256-color 'pages' internally. So the first color is page 0/color 0. Color 256 is page 1/color 0. Color 628 is page 2/color 116. You'll see why in the background section.
