View Source: SDL_GetRGBA(3) - Waikato Linux Users Group

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SDL_GetRGBA
!!!SDL_GetRGBA
NAME
SYNOPSIS
DESCRIPTION
SEE ALSO
----
!!NAME


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


__#include __


__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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Last edited on Monday, June 3, 2002 6:53:43 pm by "perry"

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