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 17<h2>C Specification</h2> 18 19<dl> 20<dd><PRE><CODE>#include <revolution/gx.h></CODE></PRE> 21 </dd> 22<dd><pre><CODE>void GXSetFogRangeAdj( 23 <a href="../Enumerated_Types/GXBool.html">GXBool</a> enable, 24 u16 center, 25 <a href="../Structures/GXFogAdjTable.html">GXFogAdjTable</a>* table );</CODE></pre> 26 </dd> 27</dl> 28 29<h2>Arguments</h2> 30<TABLE border="1" cellpadding="3" cellspacing="0.1"> 31 <tr> 32<TD width="120" valign="top" bgcolor="#ffffe8"><em><strong><CODE>enable</font></strong></em></TD> 33<TD width="520">Enables range adjustment when set to <code>GX_ENABLE</code>.</TD> 34 </tr> 35 <tr> 36<TD width="120" valign="top" bgcolor="#ffffe8"><em><strong><CODE>center</font></strong></em></TD> 37<TD width="520">The applicable center for the range adjustment function. Normally matches the center of the viewport.</TD> 38 </tr> 39 <tr> 40<TD width="120" valign="top" bgcolor="#ffffe8"><em><strong><CODE>table</font></strong></em></TD> 41<TD width="520">The table of range adjustment coefficients. Normally, the <CODE><A href="GXInitFogAdjTable.html">GXInitFogAdjTable</A></code> function is used to initialize this.</TD> 42 </tr> 43</TABLE> 44<h2>Return Values</h2> 45 46<p>None.</p> 47<H2>Description</H2> 48<P>This function allows enabling or disabling horizontal fog-range adjustment. This adjustment is a factor that is multiplied by the visual-space Z used for fog computation; it is based upon the X position 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 adjustment is computed per quad (2x2 pixels), not per-pixel. The center of the viewport is specified using <em><strong><code>center</code></strong></em>. The range adjustment table is specified using <code><em><strong>table</strong></em></code>. The range adjust function is mirrored horizontally about the <em><strong><code>center</code></strong></em>.</P> 49<P><a href="../Management/GXInit.html"><code>GXInit</code></a> disables range adjustment by default.</P> 50 51 52 53 54<h2>See Also</h2> 55 56<p><a href="GXSetFog.html"><CODE>GXSetFog</CODE></a><br> <a href="GXInitFogAdjTable.html"><CODE>GXInitFogAdjTable</CODE><br></a><a href="../Structures/GXFogAdjTable.html"><CODE>GXFogAdjTable</CODE></a></p> 57<H2>Revision History</H2> 58<P>03/01/2006 Initial version.</P> 59</BODY> 60</HTML>