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diff docs/html/sdlgetrgba.html @ 0:74212992fb08

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Initial revision
author Sam Lantinga <slouken@lokigames.com>
date Thu, 26 Apr 2001 16:45:43 +0000
parents
children 55f1f1b3e27d
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+++ b/docs/html/sdlgetrgba.html	Thu Apr 26 16:45:43 2001 +0000
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+<HTML
+><HEAD
+><TITLE
+>SDL_GetRGBA</TITLE
+><META
+NAME="GENERATOR"
+CONTENT="Modular DocBook HTML Stylesheet Version 1.61
+"><LINK
+REL="HOME"
+TITLE="SDL Library Documentation"
+HREF="index.html"><LINK
+REL="UP"
+TITLE="Video"
+HREF="video.html"><LINK
+REL="PREVIOUS"
+TITLE="SDL_GetRGB"
+HREF="sdlgetrgb.html"><LINK
+REL="NEXT"
+TITLE="SDL_CreateRGBSurface"
+HREF="sdlcreatergbsurface.html"></HEAD
+><BODY
+CLASS="REFENTRY"
+BGCOLOR="#FFF8DC"
+TEXT="#000000"
+LINK="#0000ee"
+VLINK="#551a8b"
+ALINK="#ff0000"
+><DIV
+CLASS="NAVHEADER"
+><TABLE
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TH
+COLSPAN="3"
+ALIGN="center"
+>SDL Library Documentation</TH
+></TR
+><TR
+><TD
+WIDTH="10%"
+ALIGN="left"
+VALIGN="bottom"
+><A
+HREF="sdlgetrgb.html"
+>Prev</A
+></TD
+><TD
+WIDTH="80%"
+ALIGN="center"
+VALIGN="bottom"
+></TD
+><TD
+WIDTH="10%"
+ALIGN="right"
+VALIGN="bottom"
+><A
+HREF="sdlcreatergbsurface.html"
+>Next</A
+></TD
+></TR
+></TABLE
+><HR
+ALIGN="LEFT"
+WIDTH="100%"></DIV
+><H1
+><A
+NAME="SDLGETRGBA"
+>SDL_GetRGBA</A
+></H1
+><DIV
+CLASS="REFNAMEDIV"
+><A
+NAME="AEN1290"
+></A
+><H2
+>Name</H2
+>SDL_GetRGBA&nbsp;--&nbsp;Get RGBA values from a pixel in the specified pixel format.</DIV
+><DIV
+CLASS="REFSYNOPSISDIV"
+><A
+NAME="AEN1293"
+></A
+><H2
+>Synopsis</H2
+><DIV
+CLASS="FUNCSYNOPSIS"
+><A
+NAME="AEN1294"
+></A
+><P
+></P
+><PRE
+CLASS="FUNCSYNOPSISINFO"
+>#include "SDL.h"</PRE
+><P
+><CODE
+><CODE
+CLASS="FUNCDEF"
+>void <B
+CLASS="FSFUNC"
+>SDL_GetRGBA</B
+></CODE
+>(Uint32 pixel, SDL_PixelFormat *fmt, Uint8 *r, Uint8 *g, Uint8 *b, Uint8 *a);</CODE
+></P
+><P
+></P
+></DIV
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN1300"
+></A
+><H2
+>Description</H2
+><P
+>Get RGBA component values from a pixel stored in the specified pixel format.</P
+><P
+>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
+><P
+>If the surface has no alpha component, the alpha will be returned as 0xff
+(100% opaque).</P
+></DIV
+><DIV
+CLASS="REFSECT1"
+><A
+NAME="AEN1305"
+></A
+><H2
+>See Also</H2
+><P
+><A
+HREF="sdlgetrgb.html"
+>SDL_GetRGB</A
+>,
+<A
+HREF="sdlmaprgb.html"
+>SDL_MapRGB</A
+>,
+<A
+HREF="sdlmaprgba.html"
+>SDL_MapRGBA</A
+>,
+<A
+HREF="sdlpixelformat.html"
+>SDL_PixelFormat</A
+></P
+></DIV
+><DIV
+CLASS="NAVFOOTER"
+><HR
+ALIGN="LEFT"
+WIDTH="100%"><TABLE
+WIDTH="100%"
+BORDER="0"
+CELLPADDING="0"
+CELLSPACING="0"
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+><A
+HREF="sdlgetrgb.html"
+>Prev</A
+></TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="index.html"
+>Home</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+><A
+HREF="sdlcreatergbsurface.html"
+>Next</A
+></TD
+></TR
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+>SDL_GetRGB</TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="video.html"
+>Up</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+>SDL_CreateRGBSurface</TD
+></TR
+></TABLE
+></DIV
+></BODY
+></HTML
+>
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