File: glColorTableParameter.3G.xml

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<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE html
  PUBLIC "-//W3C//DTD XHTML 1.1 plus MathML 2.0//EN" "http://www.w3.org/TR/MathML2/dtd/xhtml-math11-f.dtd">
<html
	xmlns="http://www.w3.org/1999/xhtml"
	xmlns:mml="http://www.w3.org/1998/Math/MathML"
><head><title>glColorTableParameter</title><link rel="stylesheet" href="style.css" type="text/css"/><meta name="generator" content="DocBook XSL Stylesheets V1.59.1"/><link rel="home" href="index.xml" title="PyOpenGL 2.0.1.07 Man Pages"/><link rel="up" href="reference-GL.xml" title="GL"/><link rel="previous" href="glColorTable.3G.xml" title="glColorTable"/><link rel="next" href="glConvolutionFilter1D.3G.xml" title="glConvolutionFilter1D"/></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">glColorTableParameter</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="glColorTable.3G.xml">Prev</a></td><th width="60%" align="center">GL</th><td width="20%" align="right"><a accesskey="n" href="glConvolutionFilter1D.3G.xml">Next</a></td></tr></table><hr/></div><div class="refentry" lang="en"><a name="glColorTableParameter.3G"/><div class="titlepage"/><div class="refnamediv"><a name="glColorTableParameter.3G-name"/><h2>Name</h2><p>glColorTableParameterfv, glColorTableParameteriv &#8212; set color lookup table parameters</p></div><div class="refsynopsisdiv"><a name="glColorTableParameter.3G-c_spec"/><h2>C Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code>void<tt>glColorTableParameterfv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>GLenum<i><tt>target</tt></i>, GLenum<i><tt>pname</tt></i>, constGLfloat*<i><tt>params</tt></i>);</code></td></tr><tr><td valign="top"><code>void<tt>glColorTableParameteriv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code>GLenum<i><tt>target</tt></i>, GLenum<i><tt>pname</tt></i>, constGLint*<i><tt>params</tt></i>);</code></td></tr></table></div><div class="refsynopsisdiv"><a name="glColorTableParameter.3G-python_spec"/><h2>Python Specification</h2><table class="funcprototype" border="0" cellpadding="0" cellspacing="0"><tr><td valign="top"><code><tt>glColorTableParameterfv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>pname</tt></i>, <i><tt>params</tt></i>[]) &#8594;<tt>None</tt></code></td></tr><tr><td valign="top"><code><tt>glColorTableParameteriv</tt></code></td><td valign="top"><code>(</code></td><td valign="top"><code><i><tt>target</tt></i>, <i><tt>pname</tt></i>, <i><tt>params</tt></i>[]) &#8594;<tt>None</tt></code></td></tr></table></div><div class="refsect1" lang="en"><a name="glColorTableParameter.3G-parameters"/><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><i><tt>target</tt></i></span></dt><dd>
						The target color table. Must be <tt>GL_COLOR_TABLE</tt>,
						<tt>GL_POST_CONVOLUTION_COLOR_TABLE</tt>, or
						<tt>GL_POST_COLOR_MATRIX_COLOR_TABLE</tt>.
					</dd><dt><span class="term"><i><tt>pname</tt></i></span></dt><dd>
						The symbolic name of a texture color lookup table parameter. Must be one of
						<tt>GL_COLOR_TABLE_SCALE</tt> or <tt>GL_COLOR_TABLE_BIAS</tt>.
					</dd><dt><span class="term"><i><tt>params</tt></i></span></dt><dd>
						A pointer to an array where the values of the parameters are stored.
					</dd></dl></div></div><div class="refsect1" lang="en"><a name="glColorTableParameter.3G-description"/><h2>Description</h2><p>
			<tt>glColorTableParameter</tt> is used to specify the scale factors and bias terms
			applied to color components when they are loaded into a color table. <i><tt>target</tt></i> indicates which
			color table the scale and bias terms apply to; it must be set to <tt>GL_COLOR_TABLE</tt>,
			<tt>GL_POST_CONVOLUTION_COLOR_TABLE</tt>, or <tt>GL_POST_COLOR_MATRIX_COLOR_TABLE</tt>.
		</p><p>
			<i><tt>pname</tt></i> must be <tt>GL_COLOR_TABLE_SCALE</tt> to set the scale factors. In this case,
			<i><tt>params</tt></i> points to an array of four values, which are the scale factors for red, green, blue, and
			alpha, in that order.
		</p><p>
			<i><tt>pname</tt></i> must be <tt>GL_COLOR_TABLE_BIAS</tt> to set the bias terms. In this case,
			<i><tt>params</tt></i> points to an array of four values, which are the bias terms for red, green, blue, and
			alpha, in that order.
		</p><p>
			The color tables themselves are specified by calling <a href="glColorTable.3G.xml"><tt>glColorTable</tt></a>.
		</p></div><div class="refsect1" lang="en"><a name="glColorTableParameter.3G-notes"/><h2>Notes</h2><p>
			<tt>glColorTableParameter</tt> is available only if <tt>GL_ARB_imaging</tt>
			is returned from calling <a href="glGetString.3G.xml"><tt>glGetString</tt></a> with an argument of
			<tt>GL_EXTENSIONS</tt>.
		</p></div><div class="refsect1" lang="en"><a name="glColorTableParameter.3G-errors"/><h2>Errors</h2><p>
			<tt>GL_INVALID_ENUM</tt> is generated if <i><tt>target</tt></i> or <i><tt>pname</tt></i> is
			not an acceptable value.
		</p><p>
			<tt>GL_INVALID_OPERATION</tt> is generated if <tt>glColorTableParameter</tt> is executed between the execution of <a href="glBegin.3G.xml"><tt>glBegin</tt></a> and the corresponding execution of <a href="glBegin.3G.xml"><tt>glEnd</tt></a>.
		</p></div><div class="refsect1" lang="en"><a name="glColorTableParameter.3G-associated_gets"/><h2>Associated Gets</h2><p>
			<tt>glGetColorTableParameter</tt>
		</p></div><div class="refsect1" lang="en"><a name="glColorTableParameter.3G-see_also"/><h2>See Also</h2><p>
			<span class="simplelist"><a href="glColorTable.3G.xml">glColorTable</a>, <a href="glPixelTransfer.3G.xml">glPixelTransfer</a></span>
		</p></div></div><div class="navfooter"><hr/><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="glColorTable.3G.xml">Prev</a></td><td width="20%" align="center"><a accesskey="u" href="reference-GL.xml">Up</a></td><td width="40%" align="right"><a accesskey="n" href="glConvolutionFilter1D.3G.xml">Next</a></td></tr><tr><td width="40%" align="left" valign="top">glColorTable</td><td width="20%" align="center"><a accesskey="h" href="index.xml">Home</a></td><td width="40%" align="right" valign="top">glConvolutionFilter1D</td></tr></table></div></body></html>