They set the RGB values for the color indexes 229-255 to FF(hex) / 255(dec) in the. The Fallout developers decided to hardcode the RGB values for these animated colors in the Fallout2.exe even though there was space for them in the color.pal. The color indexes from 229 to 254 are used for animated colors in Fallout details about it can be found in a separate article. FRM file now the programme needs to find the best matching colorIndex for the each single pixel. If you create new images with image editing software it will use the standard rgb palette. What we can say for sure is that you'll need this second part of the palette if you want to create new. We assume that this table is needed as Fallout used a special lighting system. So before the final rgb values were painted on the screen, they were multiplied with the brightness modifier:Īll data after the first 768 bytes is the rgb > colorIndex conversion table. The Fallout engine used a special brightness modifier (called brightnessMod in this article) to create a day / night lighting system. The first part of the palette file got this structure:ĬolorIndex:0 (r,g,b) colorIndex:1 (r,g,b,). FRM file into useful RGB values to display the image or manipulate it. These 768 first bytes are important if you want to convert the colorIndexes of a. Each component uses a single byte and can only range from 0 to 63(dec) in brightness. For those who don't know, the RGB color triplet represents the red, green and blue component of a color. The first 768 bytes of a PAL palette files are simply an array of 256 R,G,B structures. Last 32768 bytes: colorIndexes for a 32 * 32 * 32 cubic matrix of rgb values.FRM files and is set to 255 for each color component. colorIndex 255 seems to be ununsed in Fallout.The real rgb values for these special colorIndexes are hardcoded in Fallout2.exe (rgb values between 0 -> 255).colorIndexes 229 - 254 contain fake values (255 for each color component) and are used for animated colors.colorIndexes 1 - 228 contain real RGB values (rgb values between 0 -> 63).All color components for colorIndex 0 are set to 255 in the color.pal file.If a FRM file contains colorIndex 0 in his data section the pixel will be displayed transparent in the Fallout 1/2 engine.colorIndex 0 serves as transparency colorIndex.First 768 bytes: RGB values for colorIndexes 0 - 255.33536 bytes total, devided in two parts.
Palette files provide a conversion table from RGB values (called "rgb" in this article) to Fallout's color index (called "colorIndex" in this article) and vice versa. This article describes the structure of the proprietery PAL palette file format that was used in Fallout 1 and Fallout 2.
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