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<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>glGet</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /></head><body><div class="refentry"><a id="glGet"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glGet — return the value or values of a selected parameter</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">glGetBooleanv</strong>(</code></td><td>GLenum <var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLboolean * <var class="pdparam">params</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">glGetFixedv</strong>(</code></td><td>GLenum <var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLfixed * <var class="pdparam">params</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">glGetFloatv</strong>(</code></td><td>GLenum <var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLfloat * <var class="pdparam">params</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">glGetIntegerv</strong>(</code></td><td>GLenum <var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLint * <var class="pdparam">params</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term">
		    <em class="parameter"><code>pname</code></em>
		</span></dt><dd><p>Specifies the parameter value to be returned. The
		    symbolic constants in the list below are accepted.</p></dd><dt><span class="term">
		    <em class="parameter"><code>params</code></em>
		</span></dt><dd><p>Returns the value or values of the specified parameter.</p></dd></dl></div></div><div class="refsect1"><a id="description"></a><h2>Description</h2><p>
	    These commands return values for static state variables in GL.
	    <em class="parameter"><code>pname</code></em>
	    is a symbolic constant indicating the static state variable to
	    be returned, and <em class="parameter"><code>params</code></em>
	    is a pointer to an array of the indicated type in which to place the
	    returned data.</p><p>
	If a Get command is issued that returns value types different from the type of the
	value being obtained, a type conversion is performed.
	If GetBooleanv is called, a floating-point or integer value converts to <code class="constant">GL_FALSE</code>
	if and only if it is <code class="constant">zero</code> (otherwise it converts to <code class="constant">GL_TRUE</code>).
	If GetIntegerv is called, a boolean value is interpreted as either <code class="constant">1</code>
	or <code class="constant">0</code>, and a floating-point value is rounded to the nearest integer,
	unless the value is an RGBA color component, a DepthRange value, a depth buffer clear value, or a normal coordinate.
	In these cases, the Get command  does a linear mapping that maps <code class="constant">1.0</code> to the most positive representable
	integer value, and <code class="constant">-1.0</code> to the most negative representable integer value.
	If GetFloatv is called, a boolean value is interpreted as either <code class="constant">1.0</code> or <code class="constant">0.0</code>, an integer
	is coerced to floating-point. If a value is so large in magnitude that it cannot be represented with
	the requested type, then the nearest value representable using the requested type is returned.
	</p><p>The following symbolic constants are accepted by
	<em class="parameter"><code>pname</code></em>:</p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="constant">GL_ACTIVE_TEXTURE</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single value indicating the active multitexture unit.
                        The initial value is <code class="constant">GL_TEXTURE0</code>.
                        See <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a>.
                    </p></dd><dt><span class="term">
		    <code class="constant">GL_ALIASED_POINT_SIZE_RANGE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns two values,
		    the smallest and largest supported sizes for
		    aliased points. The range must include <code class="constant">1</code>.
		    See <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_ALIASED_LINE_WIDTH_RANGE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns two values,
		    the smallest and largest supported widths for
		    aliased lines. The range must include <code class="constant">1</code>.
		    See <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_ALPHA_BITS</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of alpha bitplanes in the
		    color buffer.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_ALPHA_TEST</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether alpha
            testing of fragments is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glAlphaFunc.xml"><span class="citerefentry"><span class="refentrytitle">glAlphaFunc</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_ALPHA_TEST_FUNC</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the symbolic name of the alpha test function.
		    See <a class="citerefentry" href="glAlphaFunc.xml"><span class="citerefentry"><span class="refentrytitle">glAlphaFunc</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_ALPHA_TEST_REF</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the reference value for the alpha test.
		    An integer value, if requested, is linearly mapped from
		    the internal floating-point representation such that <code class="constant">1.0</code>
		    returns the most positive representable integer value, and <code class="constant">-1.0</code>
		    returns the most negative representable integer value.
		    See <a class="citerefentry" href="glAlphaFunc.xml"><span class="citerefentry"><span class="refentrytitle">glAlphaFunc</span></span></a>.
		    </p></dd><dt><span class="term"><code class="constant">GL_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
			  </p><p>
                        <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
                        currently bound to the target <code class="constant">GL_ARRAY_BUFFER</code>. If no buffer object
                        is bound to this target, <code class="constant">0</code> is returned.  The initial value is <code class="constant">0</code>.
                        See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
                    </p></dd><dt><span class="term">
		    <code class="constant">GL_BLEND</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            blending of fragments is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glBlendFunc.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFunc</span></span></a> and
		    <a class="citerefentry" href="glLogicOp.xml"><span class="citerefentry"><span class="refentrytitle">glLogicOp</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_BLEND_DST</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the symbolic constant identifying the destination blend function.
		    See <a class="citerefentry" href="glBlendFunc.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFunc</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_BLEND_SRC</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the symbolic constant identifying the source blend function.
		    See <a class="citerefentry" href="glBlendFunc.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFunc</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_BLUE_BITS</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of blue bitplanes in the
		    color buffer.
		    </p></dd><dt><span class="term"><code class="constant">GL_CLIENT_ACTIVE_TEXTURE</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single value indicating the current
                        client active multitexture unit.
                        The initial value is <code class="constant">GL_TEXTURE0</code>.
                        See <a class="citerefentry" href="glClientActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glClientActiveTexture</span></span></a>.
                    </p></dd><dt><span class="term">
		    <code class="constant">GL_CLIP_PLANE</code><span class="emphasis"><em>i</em></span>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the
            <span class="emphasis"><em>i</em></span>th user clipping plane is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glClipPlane.xml"><span class="citerefentry"><span class="refentrytitle">glClipPlane</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_ARRAY</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            the color array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_ARRAY_BUFFER_BINDING</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the color array buffer binding.
		    See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_ARRAY_SIZE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of components per color in the color array.
		    See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_ARRAY_STRIDE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the byte offset between consecutive colors in the color array.
		    See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_ARRAY_TYPE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    returns the data type of each component in the color array.
		    See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_CLEAR_VALUE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns four values:
		    the <em class="parameter"><code>red</code></em>, <em class="parameter"><code>green</code></em>,
		    <em class="parameter"><code>blue</code></em>, and <em class="parameter"><code>alpha</code></em>
		    values used to clear the color buffers.
		    See <a class="citerefentry" href="glClearColor.xml"><span class="citerefentry"><span class="refentrytitle">glClearColor</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_LOGIC_OP</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            logical operation on color values is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glLogicOp.xml"><span class="citerefentry"><span class="refentrytitle">glLogicOp</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_MATERIAL</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            color material tracking is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glMaterial.xml"><span class="citerefentry"><span class="refentrytitle">glMaterial</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COLOR_WRITEMASK</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns four boolean values:
		    the <em class="parameter"><code>red</code></em>, <em class="parameter"><code>green</code></em>,
		    <em class="parameter"><code>blue</code></em>, and <em class="parameter"><code>alpha</code></em>
		    write enables for the color buffers.
		    See <a class="citerefentry" href="glColorMask.xml"><span class="citerefentry"><span class="refentrytitle">glColorMask</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_COMPRESSED_TEXTURE_FORMATS</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em> returns
		    <code class="constant">GL_NUM_COMPRESSED_TEXTURE_FORMATS</code>
		    values, the supported compressed texture formats.
		    See
		    <a class="citerefentry" href="glCompressedTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage2D</span></span></a>
		    and
		    <a class="citerefentry" href="glCompressedTexSubImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexSubImage2D</span></span></a>.
		    </p></dd><dt><span class="term"><code class="constant">GL_CULL_FACE</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether polygon culling
                        is enabled. The initial value is <code class="constant">GL_FALSE</code>.
                        See <a class="citerefentry" href="glCullFace.xml"><span class="citerefentry"><span class="refentrytitle">glCullFace</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_CULL_FACE_MODE</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns one value,
                        a symbolic constant indicating which polygon faces are to be
                        culled. The initial value is <code class="constant">GL_BACK</code>.
                        See <a class="citerefentry" href="glCullFace.xml"><span class="citerefentry"><span class="refentrytitle">glCullFace</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_COLOR</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns four values:
                        the red, green, blue, and alpha values of the current color.
                        Integer values,
                        if requested,
                        are linearly mapped from the internal floating-point representation such
                        that 1.0 returns the most positive representable integer value,
                        and 
                        <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
                            
                            <mml:mn>-1.0</mml:mn>
                        </mml:math>
                        returns the most negative representable integer value.
                        The initial value is (1, 1, 1, 1).
                        See <a class="citerefentry" href="glColor.xml"><span class="citerefentry"><span class="refentrytitle">glColor</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_NORMAL</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns three values:
                        the <span class="emphasis"><em>x</em></span>, <span class="emphasis"><em>y</em></span>, and <span class="emphasis"><em>z</em></span> values of the current normal.
                        Integer values,
                        if requested,
                        are linearly mapped from the internal floating-point representation such
                        that 1.0 returns the most positive representable integer value,
                        and 
                        <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
                            
                            <mml:mn>-1.0</mml:mn>
                        </mml:math>
                        returns the most negative representable integer value.
                        The initial value is (0, 0, 1).
                        See <a class="citerefentry" href="glNormal.xml"><span class="citerefentry"><span class="refentrytitle">glNormal</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_TEXTURE_COORDS</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns four values:
                        the <span class="emphasis"><em>s</em></span>, <span class="emphasis"><em>t</em></span>, <span class="emphasis"><em>r</em></span>, and <span class="emphasis"><em>q</em></span> current texture
                        coordinates. The initial value is (0, 0, 0, 1).
                        See <a class="citerefentry" href="glMultiTexCoord.xml"><span class="citerefentry"><span class="refentrytitle">glMultiTexCoord</span></span></a>.
                    </p></dd><dt><span class="term">
		    <code class="constant">GL_DEPTH_BITS</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, the number of bitplanes in the depth
		    buffer.</p></dd><dt><span class="term">
		    <code class="constant">GL_DEPTH_CLEAR_VALUE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the value that is used to clear the depth buffer.
		    See <a class="citerefentry" href="glClearDepth.xml"><span class="citerefentry"><span class="refentrytitle">glClearDepth</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_DEPTH_FUNC</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the symbolic name of the depth comparison function.
		    See <a class="citerefentry" href="glDepthFunc.xml"><span class="citerefentry"><span class="refentrytitle">glDepthFunc</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_DEPTH_RANGE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns two values:
		    the near and far mapping limits for the depth buffer.
		    See <a class="citerefentry" href="glDepthRange.xml"><span class="citerefentry"><span class="refentrytitle">glDepthRange</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_DEPTH_TEST</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether depth testing
            of fragments is enabled. The initial value is <code class="constant">GL_FALSE</code>.
            See <a class="citerefentry" href="glDepthFunc.xml"><span class="citerefentry"><span class="refentrytitle">glDepthFunc</span></span></a> and <a class="citerefentry" href="glDepthRange.xml"><span class="citerefentry"><span class="refentrytitle">glDepthRange</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_DEPTH_WRITEMASK</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns a single boolean value
		    indicating if the depth buffer is enabled for writing.
		    See <a class="citerefentry" href="glDepthMask.xml"><span class="citerefentry"><span class="refentrytitle">glDepthMask</span></span></a>.
		    </p></dd><dt><span class="term"><code class="constant">GL_ELEMENT_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
			  </p><p>
                        <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
                        currently bound to the target <code class="constant">GL_ELEMENT_ARRAY_BUFFER</code>. If no buffer object
                        is bound to this target, 0 is returned.  The initial value is <code class="constant">0</code>.
                        See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
                    </p></dd><dt><span class="term">
		    <code class="constant">GL_FOG</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether fog
            is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_FOG_COLOR</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns four values:
		    the <em class="parameter"><code>red</code></em>, <em class="parameter"><code>green</code></em>,
		    <em class="parameter"><code>blue</code></em>, and <em class="parameter"><code>alpha</code></em>
		    components of the fog color.
		    See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_FOG_DENSITY</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the fog density parameter.
		    See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_FOG_END</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the end factor for the linear fog equation.
		    See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_FOG_HINT</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating the mode of the fog hint.
		    See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_FOG_MODE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating which fog equation is selected.
		    See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_FOG_START</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the start factor for the linear fog equation.
		    See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_FRONT_FACE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating whether clockwise or
		    counterclockwise polygon winding is treated as front-facing.
		    See <a class="citerefentry" href="glFrontFace.xml"><span class="citerefentry"><span class="refentrytitle">glFrontFace</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_GREEN_BITS</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, the number of green bitplanes in the
		    color buffer.</p></dd><dt><span class="term">
		    <code class="constant">GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, the preferred format for pixel read back. See
		    <a class="citerefentry" href="glReadPixels.xml"><span class="citerefentry"><span class="refentrytitle">glReadPixels</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_IMPLEMENTATION_COLOR_READ_TYPE_OES</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, the preferred type for pixel read back. See
		    <a class="citerefentry" href="glReadPixels.xml"><span class="citerefentry"><span class="refentrytitle">glReadPixels</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_LIGHT_MODEL_AMBIENT</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns four values:
		    the <em class="parameter"><code>red</code></em>, <em class="parameter"><code>green</code></em>,
		    <em class="parameter"><code>blue</code></em>, and <em class="parameter"><code>alpha</code></em>
		    components of the ambient intensity of the entire scene.
		    See <a class="citerefentry" href="glLightModel.xml"><span class="citerefentry"><span class="refentrytitle">glLightModel</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_LIGHT_MODEL_TWO_SIDE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns a single boolean value
		    indicating whether separate materials are used to compute
		    lighting for front and back facing polygons.
		    See <a class="citerefentry" href="glLightModel.xml"><span class="citerefentry"><span class="refentrytitle">glLightModel</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_LIGHT</code><span class="emphasis"><em>i</em></span>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the
            <span class="emphasis"><em>i</em></span>th light is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glLight.xml"><span class="citerefentry"><span class="refentrytitle">glLight</span></span></a> and
		    <a class="citerefentry" href="glLightModel.xml"><span class="citerefentry"><span class="refentrytitle">glLightModel</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_LIGHTING</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether lighting
            is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glLight.xml"><span class="citerefentry"><span class="refentrytitle">glLight</span></span></a>,
		    <a class="citerefentry" href="glLightModel.xml"><span class="citerefentry"><span class="refentrytitle">glLightModel</span></span></a>, and
		    <a class="citerefentry" href="glMaterial.xml"><span class="citerefentry"><span class="refentrytitle">glMaterial</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_LINE_SMOOTH</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether line
            antialiasing is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_LINE_SMOOTH_HINT</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating the mode of the line antialiasing hint.
		    See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_LINE_WIDTH</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the line width as specified with
		    <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_LOGIC_OP_MODE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating the selected logic operation mode.
		    See <a class="citerefentry" href="glLogicOp.xml"><span class="citerefentry"><span class="refentrytitle">glLogicOp</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_MATRIX_MODE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating which matrix stack is currently the
		    target of all matrix operations.
		    See <a class="citerefentry" href="glMatrixMode.xml"><span class="citerefentry"><span class="refentrytitle">glMatrixMode</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_MAX_CLIP_PLANES</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the maximum number of application defined clipping planes.
		    The value must be at least <code class="constant">6</code>.
		    See <a class="citerefentry" href="glClipPlane.xml"><span class="citerefentry"><span class="refentrytitle">glClipPlane</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_MAX_LIGHTS</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, the maximum number of lights. The
		    value must be at least 8. See
		    <a class="citerefentry" href="glLight.xml"><span class="citerefentry"><span class="refentrytitle">glLight</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_MAX_MODELVIEW_STACK_DEPTH</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the maximum supported depth of the
		    modelview matrix stack.
		    The value must be at least <code class="constant">16</code>.
		    See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_MAX_PROJECTION_STACK_DEPTH</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, the maximum supported depth of the
		    projection matrix stack. The value must be at least 2.
		    See
		    <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_MAX_TEXTURE_SIZE</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value. The value gives a rough estimate of the largest
		    texture that the GL can handle. The value must be at least 64.
		    See
		    <a class="citerefentry" href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>,
		    <a class="citerefentry" href="glCompressedTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage2D</span></span></a>, and
		    <a class="citerefentry" href="glCopyTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCopyTexImage2D</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_MAX_TEXTURE_STACK_DEPTH</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, the maximum supported depth of the
		    texture matrix stack. The value must be at least 2. See
		    <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_MAX_TEXTURE_UNITS</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns a single value indicating the number of texture
		    units supported. The value must be at least 1. See
		    <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a>,
		    <a class="citerefentry" href="glClientActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glClientActiveTexture</span></span></a>
		    and
		    <a class="citerefentry" href="glMultiTexCoord.xml"><span class="citerefentry"><span class="refentrytitle">glMultiTexCoord</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_MAX_VIEWPORT_DIMS</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns two values: the maximum supported width and
		    height of the viewport. These must be at least as large
		    as the visible dimensions of the display being rendered
		    to. See
		    <a class="citerefentry" href="glViewport.xml"><span class="citerefentry"><span class="refentrytitle">glViewport</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_MODELVIEW_MATRIX</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns sixteen values:
		    the modelview matrix on the top of the modelview matrix stack.
		    See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_MODELVIEW_STACK_DEPTH</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of matrices on the modelview matrix stack.
		    See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_MULTISAMPLE</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether multisampling
            is enabled. The initial value is <code class="constant">GL_TRUE</code>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_NORMAL_ARRAY</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            the normal array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glNormalPointer.xml"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_NORMAL_ARRAY_BUFFER_BINDING</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the normal array buffer binding.
		    See <a class="citerefentry" href="glNormalPointer.xml"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_NORMAL_ARRAY_STRIDE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the byte offset between consective normals in the normal array.
		    See <a class="citerefentry" href="glNormalPointer.xml"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_NORMAL_ARRAY_TYPE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the data type of each normal in the normal array.
		    See <a class="citerefentry" href="glNormalPointer.xml"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_NORMALIZE</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            normalization of normals is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glNormal.xml"><span class="citerefentry"><span class="refentrytitle">glNormal</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_NUM_COMPRESSED_TEXTURE_FORMATS</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of supportex compressed
		    texture formats.
		    The value must be at least <code class="constant">10</code>.
		    See
		    <a class="citerefentry" href="glCompressedTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage2D</span></span></a>
		    and
		    <a class="citerefentry" href="glCompressedTexSubImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexSubImage2D</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_PACK_ALIGNMENT</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the byte alignment used for writing pixel data to memory.
		    See <a class="citerefentry" href="glPixelStorei.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStorei</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_PERSPECTIVE_CORRECTION_HINT</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating the mode of the perspective correction hint.
		    See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_DISTANCE_ATTENUATION</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns three values, the distance attenuation function coefficients <span class="emphasis"><em>a</em></span>,
            <span class="emphasis"><em>b</em></span>, and <span class="emphasis"><em>c</em></span>. The initial value is (1, 0, 0).  See
		    <a class="citerefentry" href="glPointParameter.xml"><span class="citerefentry"><span class="refentrytitle">glPointParameter</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_FADE_THRESHOLD_SIZE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value, the point fade threshold. The initial value is <code class="constant">1</code>.  See
		    <a class="citerefentry" href="glPointParameter.xml"><span class="citerefentry"><span class="refentrytitle">glPointParameter</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SIZE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the point size as specified by
		    <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the point size array buffer binding.
		    See <a class="citerefentry" href="glPointSizePointerOES.xml"><span class="citerefentry"><span class="refentrytitle">glPointSizePointerOES</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SIZE_ARRAY_OES</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the point
            size array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glPointSizePointerOES.xml"><span class="citerefentry"><span class="refentrytitle">glPointSizePointerOES</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SIZE_ARRAY_STRIDE_OES</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the byte offset between consecutive point sizes in the point size array.
		    See <a class="citerefentry" href="glPointSizePointerOES.xml"><span class="citerefentry"><span class="refentrytitle">glPointSizePointerOES</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SIZE_ARRAY_TYPE_OES</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the data type of each point size in the point array.
		    See <a class="citerefentry" href="glPointSizePointerOES.xml"><span class="citerefentry"><span class="refentrytitle">glPointSizePointerOES</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SIZE_MAX</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
            the upper bound to which the derived point size is
            clamped. The initial value is the maximum of the implementation dependent max
            aliased and smooth point sizes. See
		    <a class="citerefentry" href="glPointParameter.xml"><span class="citerefentry"><span class="refentrytitle">glPointParameter</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SIZE_MIN</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
            the lower bound to which the derived point size is
            clamped. The initial value is <code class="constant">0</code>. See
		    <a class="citerefentry" href="glPointParameter.xml"><span class="citerefentry"><span class="refentrytitle">glPointParameter</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SMOOTH</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether point
            antialiasing is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SMOOTH_HINT</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating the mode of the point antialiasing hint.
		    See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POINT_SPRITE_OES</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether point
            sprites are enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glTexEnv.xml"><span class="citerefentry"><span class="refentrytitle">glTexEnv</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POLYGON_OFFSET_FACTOR</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the scaling factor used to determine the variable offset that is added
		    to the depth value of each fragment generated when a polygon is rasterized.
		    See <a class="citerefentry" href="glPolygonOffset.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonOffset</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POLYGON_OFFSET_FILL</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether polygon offset
            is enabled for polygons in fill mode. The initial value is <code class="constant">GL_FALSE</code>.
            See <a class="citerefentry" href="glPolygonOffset.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonOffset</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_POLYGON_OFFSET_UNITS</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value.
		    This value is multiplied by an implementation-specific value and
		    then added to the depth value of each fragment generated when a
		    polygon is rasterized.
		    See <a class="citerefentry" href="glPolygonOffset.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonOffset</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_PROJECTION_MATRIX</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns sixteen values:
		    the projection matrix on the top of the projection matrix stack.
		    See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_PROJECTION_STACK_DEPTH</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of matrices on the projection matrix stack.
		    See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_RED_BITS</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of red bitplanes in each color buffer.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_RESCALE_NORMAL</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            rescaling of normals is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glNormal.xml"><span class="citerefentry"><span class="refentrytitle">glNormal</span></span></a>.
		    </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_ALPHA_TO_COVERAGE</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single boolean value indicating if the 
                        fragment coverage value should be ANDed with a temporary coverage value based
                        on the fragment's alpha value. The initial value is <code class="constant">GL_FALSE</code>.
                        See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_ALPHA_TO_ONE</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single boolean value indicating if the 
                        fragment's alpha value should be replaced by the maximum representable alpha value
                        after coverage determination. The initial value is <code class="constant">GL_FALSE</code>.
                        See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_BUFFERS</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single integer value indicating the number of sample buffers
                        associated with the currently bound framebuffer.
                        See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_COVERAGE</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single boolean value indicating if the 
                        fragment coverage value should be ANDed with a temporary coverage value based
                        on the current sample coverage value. The initial value is <code class="constant">GL_FALSE</code>.
                        See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_COVERAGE_INVERT</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single boolean value indicating if the temporary
                        coverage value should be inverted.
                        See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_COVERAGE_VALUE</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single positive floating-point value indicating the
                        current sample coverage value.
                        See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
                    </p></dd><dt><span class="term"><code class="constant">GL_SAMPLES</code></span></dt><dd><p>
                        <em class="parameter"><code>params</code></em> returns a single integer value 
                        indicating the coverage mask size of the currently bound framebuffer.
                        See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
                    </p></dd><dt><span class="term">
		    <code class="constant">GL_SCISSOR_BOX</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns four values:
		    the <em class="parameter"><code>x</code></em> and <em class="parameter"><code>y</code></em> window coordinates of the scissor box,
		    followed by its <em class="parameter"><code>width</code></em> and <em class="parameter"><code>height</code></em>.
		    See <a class="citerefentry" href="glScissor.xml"><span class="citerefentry"><span class="refentrytitle">glScissor</span></span></a>.
		    </p></dd><dt><span class="term"><code class="constant">GL_SCISSOR_TEST</code></span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether scissoring is
            enabled. The initial value is <code class="constant">GL_FALSE</code>.
            See <a class="citerefentry" href="glScissor.xml"><span class="citerefentry"><span class="refentrytitle">glScissor</span></span></a>.
            </p></dd><dt><span class="term">
		    <code class="constant">GL_SHADE_MODEL</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating whether the shading mode is
		    flat or smooth.
		    See <a class="citerefentry" href="glShadeModel.xml"><span class="citerefentry"><span class="refentrytitle">glShadeModel</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_SMOOTH_LINE_WIDTH_RANGE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>

		    returns two values, the smallest and largest supported
		    widths for antialiased lines. The range must include 1. See
		    <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_SMOOTH_POINT_SIZE_RANGE</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns two values, the smallest and largest supported
		    widths for antialiased points. The range must include 1. See
		    <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.</p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_BITS</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, the number of bitplanes in the stencil
		    buffer.</p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_CLEAR_VALUE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the index to which the stencil bitplanes are cleared.
		    See <a class="citerefentry" href="glClearStencil.xml"><span class="citerefentry"><span class="refentrytitle">glClearStencil</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_FAIL</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating what action is taken when the stencil test fails.
		    See <a class="citerefentry" href="glStencilOp.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOp</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_FUNC</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating what function is used to compare the
		    stencil reference value with the stencil buffer value.
		    See <a class="citerefentry" href="glStencilFunc.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFunc</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_PASS_DEPTH_FAIL</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating what action is taken when the stencil
		    test passes, but the depth test fails.
		    See <a class="citerefentry" href="glStencilOp.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOp</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_PASS_DEPTH_PASS</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    a symbolic constant indicating what action is taken when the stencil
		    test passes, and the depth test passes.
		    See <a class="citerefentry" href="glStencilOp.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOp</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_REF</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the reference value that is compared with the contents of the stencil buffer.
		    See <a class="citerefentry" href="glStencilFunc.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFunc</span></span></a>.
		    </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_TEST</code></span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether stencil testing
            of fragments is enabled. The initial value is <code class="constant">GL_FALSE</code>.
            See <a class="citerefentry" href="glStencilFunc.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFunc</span></span></a> and <a class="citerefentry" href="glStencilOp.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOp</span></span></a>.
            </p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_VALUE_MASK</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the mask that is used to mask both the stencil reference value and the
		    stencil buffer value before they are compared.
		    See <a class="citerefentry" href="glStencilFunc.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFunc</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_STENCIL_WRITEMASK</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the mask that controls writing of the stencil bitplanes.
		    See <a class="citerefentry" href="glStencilMask.xml"><span class="citerefentry"><span class="refentrytitle">glStencilMask</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_SUBPIXEL_BITS</code>
		</span></dt><dd><p><em class="parameter"><code>params</code></em>
		    returns one value, an estimate of the number of bits of
		    subpixel resolution that are used to position rasterized
		    geometry in window coordinates. The value must be at
		    least 4.</p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_2D</code></span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether 2D
            texturing is enabled. The initial value is <code class="constant">GL_FALSE</code>.
            See <a class="citerefentry" href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>.
            </p></dd><dt><span class="term">
		    <code class="constant">GL_TEXTURE_BINDING_2D</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the name of the texture currently bound to the target <code class="constant">GL_TEXTURE_2D</code>.
		    See <a class="citerefentry" href="glBindTexture.xml"><span class="citerefentry"><span class="refentrytitle">glBindTexture</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_TEXTURE_COORD_ARRAY</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            the texture coordinate array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the texture coordinate array buffer binding.
		    See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_TEXTURE_COORD_ARRAY_SIZE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of coordinates per element in the texture coordinate array.
		    See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_TEXTURE_COORD_ARRAY_STRIDE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the byte offset between consecutive elements in the texture coordinate array.
		    See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_TEXTURE_COORD_ARRAY_TYPE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    returns the data type of each coordinate in the texture coordinate array.
		    See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_TEXTURE_MATRIX</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns sixteen values:
		    the texture matrix on the top of the texture matrix stack.
		    See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_TEXTURE_STACK_DEPTH</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the number of matrices on the texture matrix stack.
		    See <a class="citerefentry" href="glBindTexture.xml"><span class="citerefentry"><span class="refentrytitle">glBindTexture</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_UNPACK_ALIGNMENT</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the byte alignment used for reading pixel data from memory.
		    See <a class="citerefentry" href="glPixelStorei.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStorei</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_VIEWPORT</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns four values:,
		    the <em class="parameter"><code>x</code></em> and <em class="parameter"><code>y</code></em> window coordinates of the viewport,
		    followed by its <em class="parameter"><code>width</code></em> and <em class="parameter"><code>height</code></em>.
		    See <a class="citerefentry" href="glViewport.xml"><span class="citerefentry"><span class="refentrytitle">glViewport</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_VERTEX_ARRAY</code>
		</span></dt><dd><p>
            <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
            the vertex array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
		    See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_VERTEX_ARRAY_BUFFER_BINDING</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the vertex array buffer binding.
		    See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_VERTEX_ARRAY_SIZE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    number of coordinates per vertex in the vertex array.
		    See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_VERTEX_ARRAY_STRIDE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    the byte offset between consecutive vertexes in the vertex array.
		    See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
		    </p></dd><dt><span class="term">
		    <code class="constant">GL_VERTEX_ARRAY_TYPE</code>
		</span></dt><dd><p>
		    <em class="parameter"><code>params</code></em>
		    returns one value,
		    returns the data type of each coordinate in the vertex array.
		    See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
		    </p></dd></dl></div></div><div class="refsect1"><a id="notes"></a><h2>Notes</h2><p> 
	<code class="constant">GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES</code>, 
        <code class="constant">GL_POINT_SIZE_ARRAY_STRIDE_OES</code>, and 
        <code class="constant">GL_POINT_SIZE_ARRAY_TYPE_OES</code> are only accepted
	if the OpenGL ES version number is 1.1 or greater. 
	</p></div><div class="refsect1"><a id="errors"></a><h2>Errors</h2><p><code class="constant">GL_INVALID_ENUM</code> is generated if
	<em class="parameter"><code>pname</code></em> is not an accepted value.</p></div><div class="refsect1"><a id="seealso"></a><h2>See Also</h2><p>
	<a class="citerefentry" href="glGetError.xml"><span class="citerefentry"><span class="refentrytitle">glGetError</span></span></a>,
	<a class="citerefentry" href="glGetString.xml"><span class="citerefentry"><span class="refentrytitle">glGetString</span></span></a>
	</p></div><div class="refsect1"><a id="copyright"></a><h2>Copyright</h2><p>
	    Copyright <span class="trademark"></span>© 2003-2004
	    Silicon Graphics, Inc. This document is licensed under the SGI
	    Free Software B License. For details, see
	    <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.
	</p></div></div></body></html>