1<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2<html> 3 4<head> 5<META http-equiv="Content-Type" content="text/html; charset=windows-1252"> 6<META name="GENERATOR" content="Microsoft FrontPage 5.0"> 7<META http-equiv="Content-Style-Type" content="text/css"> 8<LINK rel="stylesheet" type="text/css" href="../../CSS/revolution.css"> 9<title>GXSetFogRangeAdj</title> 10</head> 11 12<body> 13 14<h1 align="left">GXSetFogRangeAdj</h1> 15 16<h2>Syntax</h2> 17<dl><dd><pre class="construction"> 18#include <revolution/gx.h> 19 20void GXSetFogRangeAdj( 21 <a href="../Enumerated_Types/GXBool.html">GXBool</a> enable, 22 u16 center, 23 <a href="../Structures/GXFogAdjTable.html">GXFogAdjTable*</a> table ); 24</pre></dd></dl> 25 26<h2>Arguments</h2> 27<TABLE class="arguments" border="1" > 28 <tr> 29<TH>enable</TH> 30<TD>Enables range adjustment when set to <code>GX_ENABLE</code>.</TD> 31 </tr> 32 <tr> 33<TH>center</TH> 34<TD>The center to apply the range adjustment function. Normally matches the center of the viewport.</TD> 35 </tr> 36 <tr> 37<TH>table</TH> 38<TD>The table of range adjustment coefficients. Normally, the <A href="GXInitFogAdjTable.html"><CODE>GXInitFogAdjTable</CODE></A> function is used to initialize this.</TD> 39 </tr> 40</TABLE> 41 42<h2>Return Values</h2> 43<p>None.</p> 44 45<H2>Description</H2> 46<P>This function allows enabling or disabling horizontal fog-range adjustment. This adjustment is a factor that is multiplied by the visual-space Z value used for fog computation. It is based upon the X coordinate value of the pixels being rendered. The Y direction is not compensated for. This effectively increases the fog density at the edges of the screen, making for a more realistic fog effect. The correction is computed per quad (2x2 pixels), not per pixel. The center of the viewport is specified using <SPAN class="argument">center</SPAN>. The range adjustment table is specified using <SPAN class="argument">table</SPAN>. The range adjust function is mirrored horizontally about the <SPAN class="argument">center</SPAN>.</P> 47<P>The <A href="../Management/GXInit.html"><CODE>GXInit</CODE></A> function disables range adjustment by default.</P> 48 49<h2>See Also</h2> 50<P class="reference"> 51<a href="GXSetFog.html">GXSetFog</a>, 52<a href="GXInitFogAdjTable.html">GXInitFogAdjTable</a>, 53<a href="../Structures/GXFogAdjTable.html">GXFogAdjTable</a> 54</p> 55 56<H2>Revision History</H2> 57<P> 582006/03/01 Initial version.<br> 59</P> 60 61<hr><p>CONFIDENTIAL</p></body> 62</HTML>