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Man Pages


Manual Reference Pages  -  SDL_GETRGBA (3)

NAME

SDL_GetRGBA - Get RGBA values from a pixel in the specified pixel format.

CONTENTS

SYNOPSIS

#include "SDL.h"

void SDL_GetRGBA(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a);

DESCRIPTION

Get RGBA component values from a pixel stored in the specified pixel format.

This function uses the entire 8-bit [0..255] range when converting color components from pixel formats with less than 8-bits per RGB component (e.g., a completely white pixel in 16-bit RGB565 format would return [0xff, 0xff, 0xff] not [0xf8, 0xfc, 0xf8]).

If the surface has no alpha component, the alpha will be returned as 0xff (100% opaque).

SEE ALSO

SDL_GetRGB, SDL_MapRGB, SDL_MapRGBA, SDL_PixelFormat

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SDL SDL_GETRGBA (3) Tue 11 Sep 2001, 23:01

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