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Man Pages
SDL_MapRGB(3) SDL API Reference SDL_MapRGB(3)

SDL_MapRGB - Map a RGB color value to a pixel format.

#include "SDL.h"

Uint32 SDL_MapRGB(SDL_PixelFormat *fmt, Uint8 r, Uint8 g, Uint8 b);

Maps the RGB color value to the specified pixel format and returns the pixel value as a 32-bit int.

If the format has a palette (8-bit) the index of the closest matching color in the palette will be returned.

If the specified pixel format has an alpha component it will be returned as all 1 bits (fully opaque).

A pixel value best approximating the given RGB color value for a given pixel format. If the pixel format bpp (color depth) is less than 32-bpp then the unused upper bits of the return value can safely be ignored (e.g., with a 16-bpp format the return value can be assigned to a Uint16, and similarly a Uint8 for an 8-bpp format).

SDL_GetRGB, SDL_GetRGBA, SDL_MapRGBA, SDL_PixelFormat
Tue 11 Sep 2001, 23:01 SDL

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