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>SDL_GetRGBA</H1
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>Name</H2
>SDL_GetRGBA&nbsp;--&nbsp;Get RGBA values from a pixel in the specified pixel format.</DIV
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>#include "SDL.h"</PRE
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><CODE
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CLASS="FUNCDEF"
>void <B
CLASS="FSFUNC"
>SDL_GetRGBA</B
></CODE
>(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a);</CODE
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>Description</H2
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>Get RGBA component values from a pixel stored in the specified pixel format.</P
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>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]).</P
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>If the surface has no alpha component, the alpha will be returned as 0xff
(100% opaque).</P
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>See Also</H2
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><A
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>SDL_GetRGB</A
>,
<A
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>SDL_MapRGB</A
>,
<A
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>SDL_MapRGBA</A
>,
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>SDL_PixelFormat</A
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author	Sam Lantinga <slouken@libsdl.org>
date	Fri, 31 Mar 2006 06:16:20 +0000
parents	355632dca928
children