upstream-man-pages/man2/xhtml/glGet.xml

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   3 <?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 V1.73.2" /></head><body><div class="refentry" lang="en" xml:lang="en"><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" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glGetBooleanv</b>(</code></td><td>GLenum  </td><td><var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLboolean *  </td><td><var class="pdparam">params</var><code>)</code>;</td></tr></table></div></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glGetDoublev</b>(</code></td><td>GLenum  </td><td><var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLdouble *  </td><td><var class="pdparam">params</var><code>)</code>;</td></tr></table></div></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glGetFloatv</b>(</code></td><td>GLenum  </td><td><var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLfloat *  </td><td><var class="pdparam">params</var><code>)</code>;</td></tr></table></div></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glGetIntegerv</b>(</code></td><td>GLenum  </td><td><var class="pdparam">pname</var>, </td></tr><tr><td> </td><td>GLint *  </td><td><var class="pdparam">params</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>pname</code></em></span></dt><dd><p>
   4                     Specifies the parameter value to be returned.
   5                     The symbolic constants in the list below are accepted.
   6                 </p></dd><dt><span class="term"><em class="parameter"><code>params</code></em></span></dt><dd><p>
   7                     Returns the value or values of the specified parameter.
   8                 </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
   9             These four commands return values for simple state variables in GL.
  10             <em class="parameter"><code>pname</code></em> is a symbolic constant indicating the state variable to be returned,
  11             and <em class="parameter"><code>params</code></em> is a pointer to an array of the indicated type in
  12             which to place the returned data.
  13         </p><p>
  14             Type conversion is performed if <em class="parameter"><code>params</code></em> has a different type than
  15             the state variable value being requested.
  16             If <code class="function">glGetBooleanv</code> is called,
  17             a floating-point (or integer) value is converted to <code class="constant">GL_FALSE</code> if
  18             and only if it is 0.0 (or 0).
  19             Otherwise,
  20             it is converted to <code class="constant">GL_TRUE</code>.
  21             If <code class="function">glGetIntegerv</code> is called, boolean values are returned as
  22             <code class="constant">GL_TRUE</code> or <code class="constant">GL_FALSE</code>, and most floating-point values are
  23             rounded to the nearest integer value. Floating-point colors and
  24             normals, however, are returned with a linear mapping that maps 1.0 to
  25             the most positive representable integer value
  26             and
  27             <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
  28
  29                 <mml:mn>-1.0</mml:mn>
  30             </mml:math>
  31             to the most negative representable integer value.
  32             If <code class="function">glGetFloatv</code> or <code class="function">glGetDoublev</code> is called,
  33             boolean values are returned as <code class="constant">GL_TRUE</code> or <code class="constant">GL_FALSE</code>,
  34             and integer values are converted to floating-point values.
  35         </p><p>
  36             The following symbolic constants are accepted by <em class="parameter"><code>pname</code></em>:
  37         </p><div class="variablelist"><dl><dt><span class="term"><code class="constant">GL_ACCUM_ALPHA_BITS</code></span></dt><dd><p>
  38                           </p><p>
  39                         <em class="parameter"><code>params</code></em> returns one value,
  40                         the number of alpha bitplanes in the accumulation buffer.
  41                     </p></dd><dt><span class="term"><code class="constant">GL_ACCUM_BLUE_BITS</code></span></dt><dd><p>
  42                           </p><p>
  43                         <em class="parameter"><code>params</code></em> returns one value,
  44                         the number of blue bitplanes in the accumulation buffer.
  45                     </p></dd><dt><span class="term"><code class="constant">GL_ACCUM_CLEAR_VALUE</code></span></dt><dd><p>
  46                           </p><p>
  47                         <em class="parameter"><code>params</code></em> returns four values:
  48                         the red, green, blue, and alpha values used to clear the accumulation buffer.
  49                         Integer values,
  50                         if requested,
  51                         are linearly mapped from the internal floating-point representation such
  52                         that 1.0 returns the most positive representable integer value,
  53                         and
  54                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
  55
  56                             <mml:mn>-1.0</mml:mn>
  57                         </mml:math>
  58                         returns the most negative representable integer
  59                         value. The initial value is (0, 0, 0, 0).
  60                         See <a class="citerefentry" href="glClearAccum.xml"><span class="citerefentry"><span class="refentrytitle">glClearAccum</span></span></a>.
  61                     </p></dd><dt><span class="term"><code class="constant">GL_ACCUM_GREEN_BITS</code></span></dt><dd><p>
  62                           </p><p>
  63                         <em class="parameter"><code>params</code></em> returns one value,
  64                         the number of green bitplanes in the accumulation buffer.
  65                     </p></dd><dt><span class="term"><code class="constant">GL_ACCUM_RED_BITS</code></span></dt><dd><p>
  66                           </p><p>
  67                         <em class="parameter"><code>params</code></em> returns one value,
  68                         the number of red bitplanes in the accumulation buffer.
  69                     </p></dd><dt><span class="term"><code class="constant">GL_ACTIVE_TEXTURE</code></span></dt><dd><p>
  70                           </p><p>
  71                         <em class="parameter"><code>params</code></em> returns a single value indicating the active multitexture unit.
  72                         The initial value is <code class="constant">GL_TEXTURE0</code>.
  73                         See <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a>.
  74                     </p></dd><dt><span class="term"><code class="constant">GL_ALIASED_POINT_SIZE_RANGE</code></span></dt><dd><p>
  75                           </p><p>
  76                         <em class="parameter"><code>params</code></em> returns two values,
  77                         the smallest and largest supported sizes for aliased points.
  78                     </p></dd><dt><span class="term"><code class="constant">GL_ALIASED_LINE_WIDTH_RANGE</code></span></dt><dd><p>
  79                           </p><p>
  80                         <em class="parameter"><code>params</code></em> returns two values,
  81                         the smallest and largest supported widths for aliased lines.
  82                     </p></dd><dt><span class="term"><code class="constant">GL_ALPHA_BIAS</code></span></dt><dd><p>
  83                           </p><p>
  84                         <em class="parameter"><code>params</code></em> returns one value,
  85                         the alpha bias factor used during pixel transfers. The initial value is 0.
  86                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
  87                     </p></dd><dt><span class="term"><code class="constant">GL_ALPHA_BITS</code></span></dt><dd><p>
  88                           </p><p>
  89                         <em class="parameter"><code>params</code></em> returns one value,
  90                         the number of alpha bitplanes in each color buffer.
  91                     </p></dd><dt><span class="term"><code class="constant">GL_ALPHA_SCALE</code></span></dt><dd><p>
  92                           </p><p>
  93                         <em class="parameter"><code>params</code></em> returns one value,
  94                         the alpha scale factor used
  95                         during pixel transfers. The initial value is 1.
  96                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
  97                     </p></dd><dt><span class="term"><code class="constant">GL_ALPHA_TEST</code></span></dt><dd><p>
  98                           </p><p>
  99                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether alpha testing
 100                         of fragments is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 101                         See <a class="citerefentry" href="glAlphaFunc.xml"><span class="citerefentry"><span class="refentrytitle">glAlphaFunc</span></span></a>.
 102                     </p></dd><dt><span class="term"><code class="constant">GL_ALPHA_TEST_FUNC</code> <em class="parameter"><code>params</code></em> returns one value,</span></dt><dd><p>
 103                           </p><p>
 104                         the symbolic name of the alpha test function. The initial value is
 105                         <code class="constant">GL_ALWAYS</code>.
 106                         See <a class="citerefentry" href="glAlphaFunc.xml"><span class="citerefentry"><span class="refentrytitle">glAlphaFunc</span></span></a>.
 107                     </p></dd><dt><span class="term"><code class="constant">GL_ALPHA_TEST_REF</code></span></dt><dd><p>
 108                           </p><p>
 109                         <em class="parameter"><code>params</code></em> returns one value,
 110                         the reference value for the alpha test. The initial value is 0.
 111                         See <a class="citerefentry" href="glAlphaFunc.xml"><span class="citerefentry"><span class="refentrytitle">glAlphaFunc</span></span></a>.
 112                         An integer value,
 113                         if requested,
 114                         is linearly mapped from the internal floating-point representation such
 115                         that 1.0 returns the most positive representable integer value,
 116                         and
 117                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 118
 119                             <mml:mn>-1.0</mml:mn>
 120                         </mml:math>
 121                         returns the most negative representable integer value.
 122                     </p></dd><dt><span class="term"><code class="constant">GL_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
 123                           </p><p>
 124                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
 125                         currently bound to the target <code class="constant">GL_ARRAY_BUFFER</code>. If no buffer object
 126                         is bound to this target, 0 is returned.  The initial value is 0.
 127                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
 128                     </p></dd><dt><span class="term"><code class="constant">GL_ATTRIB_STACK_DEPTH</code></span></dt><dd><p>
 129                           </p><p>
 130                         <em class="parameter"><code>params</code></em> returns one value,
 131                         the depth of the attribute stack.
 132                         If the stack is empty,
 133                         0 is returned. The initial value is 0.
 134                         See <a class="citerefentry" href="glPushAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glPushAttrib</span></span></a>.
 135                     </p></dd><dt><span class="term"><code class="constant">GL_AUTO_NORMAL</code></span></dt><dd><p>
 136                           </p><p>
 137                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether 2D map evaluation
 138                         automatically generates surface normals. The initial value is <code class="constant">GL_FALSE</code>.
 139                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
 140                     </p></dd><dt><span class="term"><code class="constant">GL_AUX_BUFFERS</code></span></dt><dd><p>
 141                           </p><p>
 142                         <em class="parameter"><code>params</code></em> returns one value,
 143                         the number of auxiliary color buffers available.
 144                     </p></dd><dt><span class="term"><code class="constant">GL_BLEND</code></span></dt><dd><p>
 145                           </p><p>
 146                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether blending is
 147                         enabled. The initial value is <code class="constant">GL_FALSE</code>.
 148                         See <a class="citerefentry" href="glBlendFunc.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFunc</span></span></a>.
 149                     </p></dd><dt><span class="term"><code class="constant">GL_BLEND_COLOR</code></span></dt><dd><p>
 150                           </p><p>
 151                         <em class="parameter"><code>params</code></em> returns four values,
 152                         the red, green, blue, and alpha values which are the components of
 153                         the blend color.
 154                         See <a class="citerefentry" href="glBlendColor.xml"><span class="citerefentry"><span class="refentrytitle">glBlendColor</span></span></a>.
 155                     </p></dd><dt><span class="term"><code class="constant">GL_BLEND_DST_ALPHA</code></span></dt><dd><p>
 156                           </p><p>
 157                         <em class="parameter"><code>params</code></em> returns one value,
 158                         the symbolic constant identifying the alpha destination blend
 159                         function. The initial value is <code class="constant">GL_ZERO</code>.
 160                         See <a class="citerefentry" href="glBlendFunc.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFunc</span></span></a> and <a class="citerefentry" href="glBlendFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFuncSeparate</span></span></a>.
 161                     </p></dd><dt><span class="term"><code class="constant">GL_BLEND_DST_RGB</code></span></dt><dd><p>
 162                           </p><p>
 163                         <em class="parameter"><code>params</code></em> returns one value,
 164                         the symbolic constant identifying the RGB destination blend
 165                         function. The initial value is <code class="constant">GL_ZERO</code>.
 166                         See <a class="citerefentry" href="glBlendFunc.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFunc</span></span></a> and <a class="citerefentry" href="glBlendFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFuncSeparate</span></span></a>.
 167                     </p></dd><dt><span class="term"><code class="constant">GL_BLEND_EQUATION_RGB</code></span></dt><dd><p>
 168                           </p><p>
 169                         <em class="parameter"><code>params</code></em> returns one value, a symbolic constant indicating whether
 170                         the RGB blend equation is <code class="constant">GL_FUNC_ADD</code>, <code class="constant">GL_FUNC_SUBTRACT</code>,
 171                         <code class="constant">GL_FUNC_REVERSE_SUBTRACT</code>, <code class="constant">GL_MIN</code> or <code class="constant">GL_MAX</code>.
 172                         See <a class="citerefentry" href="glBlendEquationSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glBlendEquationSeparate</span></span></a>.
 173                     </p></dd><dt><span class="term"><code class="constant">GL_BLEND_EQUATION_ALPHA</code></span></dt><dd><p>
 174                           </p><p>
 175                         <em class="parameter"><code>params</code></em> returns one value, a symbolic constant indicating whether
 176                         the Alpha blend equation is <code class="constant">GL_FUNC_ADD</code>, <code class="constant">GL_FUNC_SUBTRACT</code>,
 177                         <code class="constant">GL_FUNC_REVERSE_SUBTRACT</code>, <code class="constant">GL_MIN</code> or <code class="constant">GL_MAX</code>.
 178                         See <a class="citerefentry" href="glBlendEquationSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glBlendEquationSeparate</span></span></a>.
 179                     </p></dd><dt><span class="term"><code class="constant">GL_BLEND_SRC_ALPHA</code></span></dt><dd><p>
 180                           </p><p>
 181                         <em class="parameter"><code>params</code></em> returns one value,
 182                         the symbolic constant identifying the alpha source blend function. The initial
 183                         value is <code class="constant">GL_ONE</code>.
 184                         See <a class="citerefentry" href="glBlendFunc.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFunc</span></span></a> and <a class="citerefentry" href="glBlendFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFuncSeparate</span></span></a>.
 185                     </p></dd><dt><span class="term"><code class="constant">GL_BLEND_SRC_RGB</code></span></dt><dd><p>
 186                           </p><p>
 187                         <em class="parameter"><code>params</code></em> returns one value,
 188                         the symbolic constant identifying the RGB source blend function. The initial
 189                         value is <code class="constant">GL_ONE</code>.
 190                         See <a class="citerefentry" href="glBlendFunc.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFunc</span></span></a> and <a class="citerefentry" href="glBlendFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glBlendFuncSeparate</span></span></a>.
 191                     </p></dd><dt><span class="term"><code class="constant">GL_BLUE_BIAS</code></span></dt><dd><p>
 192                           </p><p>
 193                         <em class="parameter"><code>params</code></em> returns one value,
 194                         the blue bias factor used during pixel transfers. The initial value is 0.
 195                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
 196                     </p></dd><dt><span class="term"><code class="constant">GL_BLUE_BITS</code></span></dt><dd><p>
 197                           </p><p>
 198                         <em class="parameter"><code>params</code></em> returns one value,
 199                         the number of blue bitplanes in each color buffer.
 200                     </p></dd><dt><span class="term"><code class="constant">GL_BLUE_SCALE</code></span></dt><dd><p>
 201                           </p><p>
 202                         <em class="parameter"><code>params</code></em> returns one value,
 203                         the blue scale factor used during pixel transfers. The initial value is 1.
 204                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
 205                     </p></dd><dt><span class="term"><code class="constant">GL_CLIENT_ACTIVE_TEXTURE</code></span></dt><dd><p>
 206                           </p><p>
 207                         <em class="parameter"><code>params</code></em> returns a single integer value indicating the current client active
 208                         multitexture unit. The initial value is <code class="constant">GL_TEXTURE0</code>.
 209                         See <a class="citerefentry" href="glClientActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glClientActiveTexture</span></span></a>.
 210                     </p></dd><dt><span class="term"><code class="constant">GL_CLIENT_ATTRIB_STACK_DEPTH</code></span></dt><dd><p>
 211                           </p><p>
 212                         <em class="parameter"><code>params</code></em> returns one value indicating the depth of the
 213                         attribute stack. The initial value is 0.
 214                         See <a class="citerefentry" href="glPushClientAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glPushClientAttrib</span></span></a>.
 215                     </p></dd><dt><span class="term"><code class="constant">GL_CLIP_PLANE</code><span class="emphasis"><em>i</em></span></span></dt><dd><p>
 216                           </p><p>
 217                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the specified
 218                         clipping plane is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 219                         See <a class="citerefentry" href="glClipPlane.xml"><span class="citerefentry"><span class="refentrytitle">glClipPlane</span></span></a>.
 220                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_ARRAY</code></span></dt><dd><p>
 221                           </p><p>
 222                         <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>.
 223                         See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
 224                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
 225                           </p><p>
 226                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
 227                         associated with the color array. This buffer object would have been bound to the
 228                         target <code class="constant">GL_ARRAY_BUFFER</code> at the time of the most recent call to
 229                         <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
 230                         If no buffer object was bound to this target, 0 is returned.  The initial value is 0.
 231                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
 232                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_ARRAY_SIZE</code></span></dt><dd><p>
 233                           </p><p>
 234                         <em class="parameter"><code>params</code></em> returns one value,
 235                         the number of components per color in the color array. The initial value
 236                         is 4.
 237                         See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
 238                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_ARRAY_STRIDE</code></span></dt><dd><p>
 239                           </p><p>
 240                         <em class="parameter"><code>params</code></em> returns one value,
 241                         the byte offset between consecutive colors in the color array. The initial
 242                         value is 0.
 243                         See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
 244                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_ARRAY_TYPE</code></span></dt><dd><p>
 245                           </p><p>
 246                         <em class="parameter"><code>params</code></em> returns one value,
 247                         the data type of each component in the color array. The initial value
 248                         is <code class="constant">GL_FLOAT</code>.
 249                         See <a class="citerefentry" href="glColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glColorPointer</span></span></a>.
 250                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_CLEAR_VALUE</code></span></dt><dd><p>
 251                           </p><p>
 252                         <em class="parameter"><code>params</code></em> returns four values:
 253                         the red, green, blue, and alpha values used to clear the color buffers.
 254                         Integer values,
 255                         if requested,
 256                         are linearly mapped from the internal floating-point representation such
 257                         that 1.0 returns the most positive representable integer value,
 258                         and
 259                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 260
 261                             <mml:mn>-1.0</mml:mn>
 262                         </mml:math>
 263                         returns the most negative representable integer
 264                         value. The initial value is (0, 0, 0, 0).
 265                         See <a class="citerefentry" href="glClearColor.xml"><span class="citerefentry"><span class="refentrytitle">glClearColor</span></span></a>.
 266                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_LOGIC_OP</code></span></dt><dd><p>
 267                           </p><p>
 268                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether a fragment's
 269                         RGBA color values are merged into the framebuffer using a logical
 270                         operation. The initial value is <code class="constant">GL_FALSE</code>.
 271                         See <a class="citerefentry" href="glLogicOp.xml"><span class="citerefentry"><span class="refentrytitle">glLogicOp</span></span></a>.
 272                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_MATERIAL</code></span></dt><dd><p>
 273                           </p><p>
 274                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether one or more
 275                         material parameters are tracking the current color. The initial value
 276                         is <code class="constant">GL_FALSE</code>.
 277                         See <a class="citerefentry" href="glColorMaterial.xml"><span class="citerefentry"><span class="refentrytitle">glColorMaterial</span></span></a>.
 278                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_MATERIAL_FACE</code></span></dt><dd><p>
 279                           </p><p>
 280                         <em class="parameter"><code>params</code></em> returns one value,
 281                         a symbolic constant indicating which materials have a parameter that is
 282                         tracking the current color. The initial value is <code class="constant">GL_FRONT_AND_BACK</code>.
 283                         See <a class="citerefentry" href="glColorMaterial.xml"><span class="citerefentry"><span class="refentrytitle">glColorMaterial</span></span></a>.
 284                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_MATERIAL_PARAMETER</code></span></dt><dd><p>
 285                           </p><p>
 286                         <em class="parameter"><code>params</code></em> returns one value,
 287                         a symbolic constant indicating which material parameters are
 288                         tracking the current color. The initial value is
 289                         <code class="constant">GL_AMBIENT_AND_DIFFUSE</code>.
 290                         See <a class="citerefentry" href="glColorMaterial.xml"><span class="citerefentry"><span class="refentrytitle">glColorMaterial</span></span></a>.
 291                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_MATRIX</code></span></dt><dd><p>
 292                           </p><p>
 293                         <em class="parameter"><code>params</code></em> returns sixteen values:
 294                         the color matrix on the top of the color matrix stack. Initially
 295                         this matrix is the identity matrix.
 296                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
 297                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_MATRIX_STACK_DEPTH</code></span></dt><dd><p>
 298                           </p><p>
 299                         <em class="parameter"><code>params</code></em> returns one value,
 300                         the maximum supported depth of the projection matrix stack. The value must
 301                         be at least 2.
 302                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
 303                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_SUM</code></span></dt><dd><p>
 304                           </p><p>
 305                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether primary and
 306                         secondary color sum is enabled.
 307                         See <a class="citerefentry" href="glSecondaryColor.xml"><span class="citerefentry"><span class="refentrytitle">glSecondaryColor</span></span></a>.
 308                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_TABLE</code></span></dt><dd><p>
 309                           </p><p>
 310                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the color table
 311                         lookup is enabled.
 312                         See <a class="citerefentry" href="glColorTable.xml"><span class="citerefentry"><span class="refentrytitle">glColorTable</span></span></a>.
 313                     </p></dd><dt><span class="term"><code class="constant">GL_COLOR_WRITEMASK</code></span></dt><dd><p>
 314                           </p><p>
 315                         <em class="parameter"><code>params</code></em> returns four boolean values:
 316                         the red, green, blue, and alpha write enables for the color
 317                         buffers. The initial value is (<code class="constant">GL_TRUE</code>, <code class="constant">GL_TRUE</code>,
 318                         <code class="constant">GL_TRUE</code>, <code class="constant">GL_TRUE</code>).
 319                         See <a class="citerefentry" href="glColorMask.xml"><span class="citerefentry"><span class="refentrytitle">glColorMask</span></span></a>.
 320                     </p></dd><dt><span class="term"><code class="constant">GL_COMPRESSED_TEXTURE_FORMATS</code></span></dt><dd><p>
 321                           </p><p>
 322                         <em class="parameter"><code>params</code></em> returns a list of symbolic
 323                         constants of length <code class="constant">GL_NUM_COMPRESSED_TEXTURE_FORMATS</code>
 324                         indicating which compressed texture formats are available.
 325                         See <a class="citerefentry" href="glCompressedTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage2D</span></span></a>.
 326                     </p></dd><dt><span class="term"><code class="constant">GL_CONVOLUTION_1D</code></span></dt><dd><p>
 327                           </p><p>
 328                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether 1D convolution
 329                         is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 330                         See <a class="citerefentry" href="glConvolutionFilter1D.xml"><span class="citerefentry"><span class="refentrytitle">glConvolutionFilter1D</span></span></a>.
 331                     </p></dd><dt><span class="term"><code class="constant">GL_CONVOLUTION_2D</code></span></dt><dd><p>
 332                           </p><p>
 333                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether 2D convolution
 334                         is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 335                         See <a class="citerefentry" href="glConvolutionFilter2D.xml"><span class="citerefentry"><span class="refentrytitle">glConvolutionFilter2D</span></span></a>.
 336                     </p></dd><dt><span class="term"><code class="constant">GL_CULL_FACE</code></span></dt><dd><p>
 337                           </p><p>
 338                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether polygon culling
 339                         is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 340                         See <a class="citerefentry" href="glCullFace.xml"><span class="citerefentry"><span class="refentrytitle">glCullFace</span></span></a>.
 341                     </p></dd><dt><span class="term"><code class="constant">GL_CULL_FACE_MODE</code></span></dt><dd><p>
 342                           </p><p>
 343                         <em class="parameter"><code>params</code></em> returns one value,
 344                         a symbolic constant indicating which polygon faces are to be
 345                         culled. The initial value is <code class="constant">GL_BACK</code>.
 346                         See <a class="citerefentry" href="glCullFace.xml"><span class="citerefentry"><span class="refentrytitle">glCullFace</span></span></a>.
 347                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_COLOR</code></span></dt><dd><p>
 348                           </p><p>
 349                         <em class="parameter"><code>params</code></em> returns four values:
 350                         the red, green, blue, and alpha values of the current color.
 351                         Integer values,
 352                         if requested,
 353                         are linearly mapped from the internal floating-point representation such
 354                         that 1.0 returns the most positive representable integer value,
 355                         and
 356                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 357
 358                             <mml:mn>-1.0</mml:mn>
 359                         </mml:math>
 360                         returns the most negative representable integer value.
 361                         The initial value is (1, 1, 1, 1).
 362                         See <a class="citerefentry" href="glColor.xml"><span class="citerefentry"><span class="refentrytitle">glColor</span></span></a>.
 363                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_FOG_COORD</code></span></dt><dd><p>
 364                           </p><p>
 365                         <em class="parameter"><code>params</code></em> returns one value, the current fog coordinate.  The initial value
 366                         is 0.
 367                         See <a class="citerefentry" href="glFogCoord.xml"><span class="citerefentry"><span class="refentrytitle">glFogCoord</span></span></a>.
 368                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_INDEX</code></span></dt><dd><p>
 369                           </p><p>
 370                         <em class="parameter"><code>params</code></em> returns one value,
 371                         the current color index. The initial value is 1.
 372                         See <a class="citerefentry" href="glIndex.xml"><span class="citerefentry"><span class="refentrytitle">glIndex</span></span></a>.
 373                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_NORMAL</code></span></dt><dd><p>
 374                           </p><p>
 375                         <em class="parameter"><code>params</code></em> returns three values:
 376                         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.
 377                         Integer values,
 378                         if requested,
 379                         are linearly mapped from the internal floating-point representation such
 380                         that 1.0 returns the most positive representable integer value,
 381                         and
 382                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 383
 384                             <mml:mn>-1.0</mml:mn>
 385                         </mml:math>
 386                         returns the most negative representable integer value.
 387                         The initial value is (0, 0, 1).
 388                         See <a class="citerefentry" href="glNormal.xml"><span class="citerefentry"><span class="refentrytitle">glNormal</span></span></a>.
 389                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_PROGRAM</code></span></dt><dd><p>
 390                           </p><p>
 391                         <em class="parameter"><code>params</code></em> returns one value,
 392                         the name of the program object that is currently active, or 0 if no program object is active.
 393                         See <a class="citerefentry" href="glUseProgram.xml"><span class="citerefentry"><span class="refentrytitle">glUseProgram</span></span></a>.
 394                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_RASTER_COLOR</code></span></dt><dd><p>
 395                           </p><p>
 396                         <em class="parameter"><code>params</code></em> returns four values:
 397                         the red, green, blue, and alpha color values of the current raster position.
 398                         Integer values,
 399                         if requested,
 400                         are linearly mapped from the internal floating-point representation such
 401                         that 1.0 returns the most positive representable integer value,
 402                         and
 403                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 404
 405                             <mml:mn>-1.0</mml:mn>
 406                         </mml:math>
 407                         returns the most negative representable integer
 408                         value. The initial value is (1, 1, 1, 1).
 409                         See <a class="citerefentry" href="glRasterPos.xml"><span class="citerefentry"><span class="refentrytitle">glRasterPos</span></span></a>.
 410                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_RASTER_DISTANCE</code></span></dt><dd><p>
 411                           </p><p>
 412                         <em class="parameter"><code>params</code></em> returns one value, the distance from the eye to the current
 413                         raster position. The initial value is 0.
 414                         See <a class="citerefentry" href="glRasterPos.xml"><span class="citerefentry"><span class="refentrytitle">glRasterPos</span></span></a>.
 415                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_RASTER_INDEX</code></span></dt><dd><p>
 416                           </p><p>
 417                         <em class="parameter"><code>params</code></em> returns one value,
 418                         the color index of the current raster position. The initial value is 1.
 419                         See <a class="citerefentry" href="glRasterPos.xml"><span class="citerefentry"><span class="refentrytitle">glRasterPos</span></span></a>.
 420                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_RASTER_POSITION</code></span></dt><dd><p>
 421                           </p><p>
 422                         <em class="parameter"><code>params</code></em> returns four values:
 423                         the <span class="emphasis"><em>x</em></span>, <span class="emphasis"><em>y</em></span>, <span class="emphasis"><em>z</em></span>, and <span class="emphasis"><em>w</em></span> components of the current
 424                         raster position.
 425                         <span class="emphasis"><em>x</em></span>, <span class="emphasis"><em>y</em></span>, and <span class="emphasis"><em>z</em></span> are in window coordinates,
 426                         and <span class="emphasis"><em>w</em></span> is in clip coordinates. The initial value is (0, 0, 0, 1).
 427                         See <a class="citerefentry" href="glRasterPos.xml"><span class="citerefentry"><span class="refentrytitle">glRasterPos</span></span></a>.
 428                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_RASTER_POSITION_VALID</code></span></dt><dd><p>
 429                           </p><p>
 430                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the current
 431                         raster position is valid. The initial value is <code class="constant">GL_TRUE</code>.
 432                         See <a class="citerefentry" href="glRasterPos.xml"><span class="citerefentry"><span class="refentrytitle">glRasterPos</span></span></a>.
 433                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_RASTER_SECONDARY_COLOR</code></span></dt><dd><p>
 434                           </p><p>
 435                         <em class="parameter"><code>params</code></em> returns four values:
 436                         the red, green, blue, and alpha secondary color values of the current raster position.
 437                         Integer values,
 438                         if requested,
 439                         are linearly mapped from the internal floating-point representation such
 440                         that 1.0 returns the most positive representable integer value,
 441                         and
 442                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 443
 444                             <mml:mn>-1.0</mml:mn>
 445                         </mml:math>
 446                         returns the most negative representable integer
 447                         value. The initial value is (1, 1, 1, 1).
 448                         See <a class="citerefentry" href="glRasterPos.xml"><span class="citerefentry"><span class="refentrytitle">glRasterPos</span></span></a>.
 449                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_RASTER_TEXTURE_COORDS</code></span></dt><dd><p>
 450                           </p><p>
 451                         <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>
 452                         texture coordinates of the current raster position. The initial value is (0, 0, 0, 1).
 453                         See <a class="citerefentry" href="glRasterPos.xml"><span class="citerefentry"><span class="refentrytitle">glRasterPos</span></span></a> and <a class="citerefentry" href="glMultiTexCoord.xml"><span class="citerefentry"><span class="refentrytitle">glMultiTexCoord</span></span></a>.
 454                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_SECONDARY_COLOR</code></span></dt><dd><p>
 455                           </p><p>
 456                         <em class="parameter"><code>params</code></em> returns four values: the red, green, blue, and alpha values of the
 457                         current secondary color.  Integer values, if requested, are linearly mapped
 458                         from the internal floating-point representation such that 1.0 returns the
 459                         most positive representable integer value, and
 460                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 461
 462                             <mml:mn>-1.0</mml:mn>
 463                         </mml:math>
 464                         returns the most
 465                         negative representable integer value.  The initial value is (0, 0, 0, 0).
 466                         See <a class="citerefentry" href="glSecondaryColor.xml"><span class="citerefentry"><span class="refentrytitle">glSecondaryColor</span></span></a>.
 467                     </p></dd><dt><span class="term"><code class="constant">GL_CURRENT_TEXTURE_COORDS</code></span></dt><dd><p>
 468                           </p><p>
 469                         <em class="parameter"><code>params</code></em> returns four values:
 470                         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
 471                         coordinates. The initial value is (0, 0, 0, 1).
 472                         See <a class="citerefentry" href="glMultiTexCoord.xml"><span class="citerefentry"><span class="refentrytitle">glMultiTexCoord</span></span></a>.
 473                     </p></dd><dt><span class="term"><code class="constant">GL_DEPTH_BIAS</code></span></dt><dd><p>
 474                           </p><p>
 475                         <em class="parameter"><code>params</code></em> returns one value,
 476                         the depth bias factor used during pixel transfers. The initial value is 0.
 477                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
 478                     </p></dd><dt><span class="term"><code class="constant">GL_DEPTH_BITS</code></span></dt><dd><p>
 479                           </p><p>
 480                         <em class="parameter"><code>params</code></em> returns one value,
 481                         the number of bitplanes in the depth buffer.
 482                     </p></dd><dt><span class="term"><code class="constant">GL_DEPTH_CLEAR_VALUE</code></span></dt><dd><p>
 483                           </p><p>
 484                         <em class="parameter"><code>params</code></em> returns one value,
 485                         the value that is used to clear the depth buffer.
 486                         Integer values,
 487                         if requested,
 488                         are linearly mapped from the internal floating-point representation such
 489                         that 1.0 returns the most positive representable integer value,
 490                         and
 491                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 492
 493                             <mml:mn>-1.0</mml:mn>
 494                         </mml:math>
 495                         returns the most negative representable integer
 496                         value. The initial value is 1.
 497                         See <a class="citerefentry" href="glClearDepth.xml"><span class="citerefentry"><span class="refentrytitle">glClearDepth</span></span></a>.
 498                     </p></dd><dt><span class="term"><code class="constant">GL_DEPTH_FUNC</code></span></dt><dd><p>
 499                           </p><p>
 500                         <em class="parameter"><code>params</code></em> returns one value,
 501                         the symbolic constant that indicates the depth comparison
 502                         function. The initial value is <code class="constant">GL_LESS</code>.
 503                         See <a class="citerefentry" href="glDepthFunc.xml"><span class="citerefentry"><span class="refentrytitle">glDepthFunc</span></span></a>.
 504                     </p></dd><dt><span class="term"><code class="constant">GL_DEPTH_RANGE</code></span></dt><dd><p>
 505                           </p><p>
 506                         <em class="parameter"><code>params</code></em> returns two values:
 507                         the near and far mapping limits for the depth buffer.
 508                         Integer values,
 509                         if requested,
 510                         are linearly mapped from the internal floating-point representation such
 511                         that 1.0 returns the most positive representable integer value,
 512                         and
 513                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 514
 515                             <mml:mn>-1.0</mml:mn>
 516                         </mml:math>
 517                         returns the most negative representable integer
 518                         value. The initial value is (0, 1).
 519                         See <a class="citerefentry" href="glDepthRange.xml"><span class="citerefentry"><span class="refentrytitle">glDepthRange</span></span></a>.
 520                     </p></dd><dt><span class="term"><code class="constant">GL_DEPTH_SCALE</code></span></dt><dd><p>
 521                           </p><p>
 522                         <em class="parameter"><code>params</code></em> returns one value,
 523                         the depth scale factor used during pixel transfers. The initial value is 1.
 524                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
 525                     </p></dd><dt><span class="term"><code class="constant">GL_DEPTH_TEST</code></span></dt><dd><p>
 526                           </p><p>
 527                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether depth testing
 528                         of fragments is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 529                         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>.
 530                     </p></dd><dt><span class="term"><code class="constant">GL_DEPTH_WRITEMASK</code></span></dt><dd><p>
 531                           </p><p>
 532                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating if the depth buffer
 533                         is enabled for writing. The initial value is <code class="constant">GL_TRUE</code>.
 534                         See <a class="citerefentry" href="glDepthMask.xml"><span class="citerefentry"><span class="refentrytitle">glDepthMask</span></span></a>.
 535                     </p></dd><dt><span class="term"><code class="constant">GL_DITHER</code></span></dt><dd><p>
 536                           </p><p>
 537                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether dithering of
 538                         fragment colors and indices is enabled. The initial value is <code class="constant">GL_TRUE</code>.
 539                     </p></dd><dt><span class="term"><code class="constant">GL_DOUBLEBUFFER</code></span></dt><dd><p>
 540                           </p><p>
 541                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether double buffering
 542                         is supported.
 543                     </p></dd><dt><span class="term"><code class="constant">GL_DRAW_BUFFER</code></span></dt><dd><p>
 544                           </p><p>
 545                         <em class="parameter"><code>params</code></em> returns one value,
 546                         a symbolic constant indicating which buffers are being drawn to.
 547                         See <a class="citerefentry" href="glDrawBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glDrawBuffer</span></span></a>. The initial value is <code class="constant">GL_BACK</code> if there
 548                         are back buffers, otherwise it is <code class="constant">GL_FRONT</code>.
 549                     </p></dd><dt><span class="term"><code class="constant">GL_DRAW_BUFFER</code><span class="emphasis"><em>i</em></span></span></dt><dd><p>
 550                           </p><p>
 551                         <em class="parameter"><code>params</code></em> returns one value,
 552                         a symbolic constant indicating which buffers are being drawn to by the corresponding output color.
 553                         See <a class="citerefentry" href="glDrawBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glDrawBuffers</span></span></a>.
 554                         The initial value of <code class="constant">GL_DRAW_BUFFER0</code> is <code class="constant">GL_BACK</code> if there
 555                         are back buffers, otherwise it is <code class="constant">GL_FRONT</code>.  The
 556                         initial values of draw buffers for all other output colors is <code class="constant">GL_NONE</code>.
 557                     </p></dd><dt><span class="term"><code class="constant">GL_EDGE_FLAG</code></span></dt><dd><p>
 558                           </p><p>
 559                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the current
 560                         edge flag is <code class="constant">GL_TRUE</code> or <code class="constant">GL_FALSE</code>. The initial value is <code class="constant">GL_TRUE</code>.
 561                         See <a class="citerefentry" href="glEdgeFlag.xml"><span class="citerefentry"><span class="refentrytitle">glEdgeFlag</span></span></a>.
 562                     </p></dd><dt><span class="term"><code class="constant">GL_EDGE_FLAG_ARRAY</code></span></dt><dd><p>
 563                           </p><p>
 564                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the edge
 565                         flag array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 566                         See <a class="citerefentry" href="glEdgeFlagPointer.xml"><span class="citerefentry"><span class="refentrytitle">glEdgeFlagPointer</span></span></a>.
 567                     </p></dd><dt><span class="term"><code class="constant">GL_EDGE_FLAG_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
 568                           </p><p>
 569                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
 570                         associated with the edge flag array. This buffer object would have been bound to the
 571                         target <code class="constant">GL_ARRAY_BUFFER</code> at the time of the most recent call to
 572                         <a class="citerefentry" href="glEdgeFlagPointer.xml"><span class="citerefentry"><span class="refentrytitle">glEdgeFlagPointer</span></span></a>.
 573                         If no buffer object was bound to this target, 0 is returned.  The initial value is 0.
 574                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
 575                     </p></dd><dt><span class="term"><code class="constant">GL_EDGE_FLAG_ARRAY_STRIDE</code></span></dt><dd><p>
 576                           </p><p>
 577                         <em class="parameter"><code>params</code></em> returns one value,
 578                         the byte offset between consecutive edge flags in the edge flag
 579                         array. The initial value is 0.
 580                         See <a class="citerefentry" href="glEdgeFlagPointer.xml"><span class="citerefentry"><span class="refentrytitle">glEdgeFlagPointer</span></span></a>.
 581                     </p></dd><dt><span class="term"><code class="constant">GL_ELEMENT_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
 582                           </p><p>
 583                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
 584                         currently bound to the target <code class="constant">GL_ELEMENT_ARRAY_BUFFER</code>. If no buffer object
 585                         is bound to this target, 0 is returned.  The initial value is 0.
 586                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
 587                     </p></dd><dt><span class="term"><code class="constant">GL_FEEDBACK_BUFFER_SIZE</code></span></dt><dd><p>
 588                           </p><p>
 589                         <em class="parameter"><code>params</code></em> returns one value, the size of the feedback buffer.
 590                         See <a class="citerefentry" href="glFeedbackBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glFeedbackBuffer</span></span></a>.
 591                     </p></dd><dt><span class="term"><code class="constant">GL_FEEDBACK_BUFFER_TYPE</code></span></dt><dd><p>
 592                           </p><p>
 593                         <em class="parameter"><code>params</code></em> returns one value, the type of the feedback buffer.
 594                         See <a class="citerefentry" href="glFeedbackBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glFeedbackBuffer</span></span></a>.
 595                     </p></dd><dt><span class="term"><code class="constant">GL_FOG</code></span></dt><dd><p>
 596                           </p><p>
 597                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether fogging is
 598                         enabled. The initial value is <code class="constant">GL_FALSE</code>.
 599                         See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
 600                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_COORD_ARRAY</code></span></dt><dd><p>
 601                           </p><p>
 602                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the fog coordinate array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 603                         See <a class="citerefentry" href="glFogCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glFogCoordPointer</span></span></a>.
 604                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_COORD_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
 605                           </p><p>
 606                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
 607                         associated with the fog coordinate array. This buffer object would have been bound to the
 608                         target <code class="constant">GL_ARRAY_BUFFER</code> at the time of the most recent call to
 609                         <a class="citerefentry" href="glFogCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glFogCoordPointer</span></span></a>.
 610                         If no buffer object was bound to this target, 0 is returned.  The initial value is 0.
 611                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
 612                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_COORD_ARRAY_STRIDE</code></span></dt><dd><p>
 613                           </p><p>
 614                         <em class="parameter"><code>params</code></em> returns one value,
 615                         the byte offset between consecutive fog coordinates in the fog coordinate
 616                         array. The initial value is 0.
 617                         See <a class="citerefentry" href="glFogCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glFogCoordPointer</span></span></a>.
 618                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_COORD_ARRAY_TYPE</code></span></dt><dd><p>
 619                           </p><p>
 620                         <em class="parameter"><code>params</code></em> returns one value, the type of the fog coordinate array.
 621                         The initial value is <code class="constant">GL_FLOAT</code>.
 622                         See <a class="citerefentry" href="glFogCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glFogCoordPointer</span></span></a>.
 623                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_COORD_SRC</code></span></dt><dd><p>
 624                           </p><p>
 625                         <em class="parameter"><code>params</code></em> returns one value, a symbolic constant indicating the source of the fog coordinate.
 626                         The initial value is <code class="constant">GL_FRAGMENT_DEPTH</code>.
 627                         See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
 628                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_COLOR</code></span></dt><dd><p>
 629                           </p><p>
 630                         <em class="parameter"><code>params</code></em> returns four values:
 631                         the red, green, blue, and alpha components of the fog color.
 632                         Integer values,
 633                         if requested,
 634                         are linearly mapped from the internal floating-point representation such
 635                         that 1.0 returns the most positive representable integer value,
 636                         and
 637                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 638
 639                             <mml:mn>-1.0</mml:mn>
 640                         </mml:math>
 641                         returns the most negative representable integer
 642                         value. The initial value is (0, 0, 0, 0).
 643                         See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
 644                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_DENSITY</code></span></dt><dd><p>
 645                           </p><p>
 646                         <em class="parameter"><code>params</code></em> returns one value,
 647                         the fog density parameter. The initial value is 1.
 648                         See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
 649                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_END</code></span></dt><dd><p>
 650                           </p><p>
 651                         <em class="parameter"><code>params</code></em> returns one value,
 652                         the end factor for the linear fog equation. The initial value is 1.
 653                         See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
 654                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_HINT</code></span></dt><dd><p>
 655                           </p><p>
 656                         <em class="parameter"><code>params</code></em> returns one value,
 657                         a symbolic constant indicating the mode of the fog hint. The initial value
 658                         is <code class="constant">GL_DONT_CARE</code>.
 659                         See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
 660                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_INDEX</code></span></dt><dd><p>
 661                           </p><p>
 662                         <em class="parameter"><code>params</code></em> returns one value,
 663                         the fog color index. The initial value is 0.
 664                         See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
 665                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_MODE</code></span></dt><dd><p>
 666                           </p><p>
 667                         <em class="parameter"><code>params</code></em> returns one value,
 668                         a symbolic constant indicating which fog equation is selected. The initial
 669                         value is <code class="constant">GL_EXP</code>.
 670                         See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
 671                     </p></dd><dt><span class="term"><code class="constant">GL_FOG_START</code></span></dt><dd><p>
 672                           </p><p>
 673                         <em class="parameter"><code>params</code></em> returns one value,
 674                         the start factor for the linear fog equation. The initial value is 0.
 675                         See <a class="citerefentry" href="glFog.xml"><span class="citerefentry"><span class="refentrytitle">glFog</span></span></a>.
 676                     </p></dd><dt><span class="term"><code class="constant">GL_FRAGMENT_SHADER_DERIVATIVE_HINT</code></span></dt><dd><p>
 677                           </p><p>
 678                         <em class="parameter"><code>params</code></em> returns one value,
 679                         a symbolic constant indicating the mode of the derivative accuracy hint
 680                         for fragment shaders. The initial value
 681                         is <code class="constant">GL_DONT_CARE</code>.
 682                         See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
 683                     </p></dd><dt><span class="term"><code class="constant">GL_FRONT_FACE</code></span></dt><dd><p>
 684                           </p><p>
 685                         <em class="parameter"><code>params</code></em> returns one value,
 686                         a symbolic constant indicating whether clockwise or counterclockwise
 687                         polygon winding is treated as front-facing. The initial value is
 688                         <code class="constant">GL_CCW</code>.
 689                         See <a class="citerefentry" href="glFrontFace.xml"><span class="citerefentry"><span class="refentrytitle">glFrontFace</span></span></a>.
 690                     </p></dd><dt><span class="term"><code class="constant">GL_GENERATE_MIPMAP_HINT</code></span></dt><dd><p>
 691                           </p><p>
 692                         <em class="parameter"><code>params</code></em> returns one value,
 693                         a symbolic constant indicating the mode of the mipmap generation filtering
 694                         hint. The initial value is <code class="constant">GL_DONT_CARE</code>.
 695                         See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
 696                     </p></dd><dt><span class="term"><code class="constant">GL_GREEN_BIAS</code></span></dt><dd><p>
 697                           </p><p>
 698                         <em class="parameter"><code>params</code></em> returns one value,
 699                         the green bias factor used during pixel transfers. The initial value is 0.
 700                     </p></dd><dt><span class="term"><code class="constant">GL_GREEN_BITS</code></span></dt><dd><p>
 701                           </p><p>
 702                         <em class="parameter"><code>params</code></em> returns one value,
 703                         the number of green bitplanes in each color buffer.
 704                     </p></dd><dt><span class="term"><code class="constant">GL_GREEN_SCALE</code></span></dt><dd><p>
 705                           </p><p>
 706                         <em class="parameter"><code>params</code></em> returns one value,
 707                         the green scale factor used during pixel transfers. The initial value is 1.
 708                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
 709                     </p></dd><dt><span class="term"><code class="constant">GL_HISTOGRAM</code></span></dt><dd><p>
 710                           </p><p>
 711                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether histogram is
 712                         enabled. The initial value is <code class="constant">GL_FALSE</code>.
 713                         See <a class="citerefentry" href="glHistogram.xml"><span class="citerefentry"><span class="refentrytitle">glHistogram</span></span></a>.
 714                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_ARRAY</code></span></dt><dd><p>
 715                           </p><p>
 716                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the color
 717                         index array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 718                         See <a class="citerefentry" href="glIndexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glIndexPointer</span></span></a>.
 719                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
 720                           </p><p>
 721                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
 722                         associated with the color index array. This buffer object would have been bound to the
 723                         target <code class="constant">GL_ARRAY_BUFFER</code> at the time of the most recent call to
 724                         <a class="citerefentry" href="glIndexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glIndexPointer</span></span></a>.
 725                         If no buffer object was bound to this target, 0 is returned.  The initial value is 0.
 726                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
 727                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_ARRAY_STRIDE</code></span></dt><dd><p>
 728                           </p><p>
 729                         <em class="parameter"><code>params</code></em> returns one value,
 730                         the byte offset between consecutive color indexes in the color index
 731                         array. The initial value is 0.
 732                         See <a class="citerefentry" href="glIndexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glIndexPointer</span></span></a>.
 733                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_ARRAY_TYPE</code></span></dt><dd><p>
 734                           </p><p>
 735                         <em class="parameter"><code>params</code></em> returns one value,
 736                         the data type of indexes in the color index array. The initial value is
 737                         <code class="constant">GL_FLOAT</code>.
 738                         See <a class="citerefentry" href="glIndexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glIndexPointer</span></span></a>.
 739                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_BITS</code></span></dt><dd><p>
 740                           </p><p>
 741                         <em class="parameter"><code>params</code></em> returns one value,
 742                         the number of bitplanes in each color index buffer.
 743                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_CLEAR_VALUE</code></span></dt><dd><p>
 744                           </p><p>
 745                         <em class="parameter"><code>params</code></em> returns one value,
 746                         the color index used to clear the color index buffers. The initial value
 747                         is 0.
 748                         See <a class="citerefentry" href="glClearIndex.xml"><span class="citerefentry"><span class="refentrytitle">glClearIndex</span></span></a>.
 749                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_LOGIC_OP</code></span></dt><dd><p>
 750                           </p><p>
 751                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether a fragment's index
 752                         values are merged into the framebuffer using a logical
 753                         operation. The initial value is <code class="constant">GL_FALSE</code>.
 754                         See <a class="citerefentry" href="glLogicOp.xml"><span class="citerefentry"><span class="refentrytitle">glLogicOp</span></span></a>.
 755                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_MODE</code></span></dt><dd><p>
 756                           </p><p>
 757                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the GL is in
 758                         color index mode (<code class="constant">GL_TRUE</code>) or RGBA mode (<code class="constant">GL_FALSE</code>).
 759                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_OFFSET</code></span></dt><dd><p>
 760                           </p><p>
 761                         <em class="parameter"><code>params</code></em> returns one value,
 762                         the offset added to color and stencil indices during pixel
 763                         transfers. The initial value is 0.
 764                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
 765                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_SHIFT</code></span></dt><dd><p>
 766                           </p><p>
 767                         <em class="parameter"><code>params</code></em> returns one value,
 768                         the amount that color and stencil indices are shifted during pixel
 769                         transfers. The initial value is 0.
 770                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
 771                     </p></dd><dt><span class="term"><code class="constant">GL_INDEX_WRITEMASK</code></span></dt><dd><p>
 772                           </p><p>
 773                         <em class="parameter"><code>params</code></em> returns one value,
 774                         a mask indicating which bitplanes of each color index buffer can be
 775                         written. The initial value is all 1's.
 776                         See <a class="citerefentry" href="glIndexMask.xml"><span class="citerefentry"><span class="refentrytitle">glIndexMask</span></span></a>.
 777                     </p></dd><dt><span class="term"><code class="constant">GL_LIGHT</code><span class="emphasis"><em>i</em></span></span></dt><dd><p>
 778                           </p><p>
 779                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the specified
 780                         light is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 781                         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>.
 782                     </p></dd><dt><span class="term"><code class="constant">GL_LIGHTING</code></span></dt><dd><p>
 783                           </p><p>
 784                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether lighting is
 785                         enabled. The initial value is <code class="constant">GL_FALSE</code>.
 786                         See <a class="citerefentry" href="glLightModel.xml"><span class="citerefentry"><span class="refentrytitle">glLightModel</span></span></a>.
 787                     </p></dd><dt><span class="term"><code class="constant">GL_LIGHT_MODEL_AMBIENT</code></span></dt><dd><p>
 788                           </p><p>
 789                         <em class="parameter"><code>params</code></em> returns four values:
 790                         the red, green, blue, and alpha components of the ambient intensity of
 791                         the entire scene.
 792                         Integer values,
 793                         if requested,
 794                         are linearly mapped from the internal floating-point representation such
 795                         that 1.0 returns the most positive representable integer value,
 796                         and
 797                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll">
 798
 799                             <mml:mn>-1.0</mml:mn>
 800                         </mml:math>
 801                         returns the most negative representable integer
 802                         value. The initial value is (0.2, 0.2, 0.2, 1.0).
 803                         See <a class="citerefentry" href="glLightModel.xml"><span class="citerefentry"><span class="refentrytitle">glLightModel</span></span></a>.
 804                     </p></dd><dt><span class="term"><code class="constant">GL_LIGHT_MODEL_COLOR_CONTROL</code></span></dt><dd><p>
 805                           </p><p>
 806                         <em class="parameter"><code>params</code></em> returns single enumerated value indicating whether specular
 807                         reflection calculations are separated from normal lighting computations.
 808                         The initial value is <code class="constant">GL_SINGLE_COLOR</code>.
 809                     </p></dd><dt><span class="term"><code class="constant">GL_LIGHT_MODEL_LOCAL_VIEWER</code></span></dt><dd><p>
 810                           </p><p>
 811                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether specular reflection
 812                         calculations treat the viewer as being local to the scene. The initial
 813                         value is <code class="constant">GL_FALSE</code>.
 814                         See <a class="citerefentry" href="glLightModel.xml"><span class="citerefentry"><span class="refentrytitle">glLightModel</span></span></a>.
 815                     </p></dd><dt><span class="term"><code class="constant">GL_LIGHT_MODEL_TWO_SIDE</code></span></dt><dd><p>
 816                           </p><p>
 817                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether separate materials
 818                         are used to compute lighting for front- and back-facing
 819                         polygons. The initial value is <code class="constant">GL_FALSE</code>.
 820                         See <a class="citerefentry" href="glLightModel.xml"><span class="citerefentry"><span class="refentrytitle">glLightModel</span></span></a>.
 821                     </p></dd><dt><span class="term"><code class="constant">GL_LINE_SMOOTH</code></span></dt><dd><p>
 822                           </p><p>
 823                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether antialiasing of
 824                         lines is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 825                         See <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.
 826                     </p></dd><dt><span class="term"><code class="constant">GL_LINE_SMOOTH_HINT</code></span></dt><dd><p>
 827                           </p><p>
 828                         <em class="parameter"><code>params</code></em> returns one value,
 829                         a symbolic constant indicating the mode of the line antialiasing
 830                         hint. The initial value is <code class="constant">GL_DONT_CARE</code>.
 831                         See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
 832                     </p></dd><dt><span class="term"><code class="constant">GL_LINE_STIPPLE</code></span></dt><dd><p>
 833                           </p><p>
 834                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether stippling of lines
 835                         is enabled. The initial value is <code class="constant">GL_FALSE</code>.
 836                         See <a class="citerefentry" href="glLineStipple.xml"><span class="citerefentry"><span class="refentrytitle">glLineStipple</span></span></a>.
 837                     </p></dd><dt><span class="term"><code class="constant">GL_LINE_STIPPLE_PATTERN</code></span></dt><dd><p>
 838                           </p><p>
 839                         <em class="parameter"><code>params</code></em> returns one value,
 840                         the 16-bit line stipple pattern. The initial value is all 1's.
 841                         See <a class="citerefentry" href="glLineStipple.xml"><span class="citerefentry"><span class="refentrytitle">glLineStipple</span></span></a>.
 842                     </p></dd><dt><span class="term"><code class="constant">GL_LINE_STIPPLE_REPEAT</code></span></dt><dd><p>
 843                           </p><p>
 844                         <em class="parameter"><code>params</code></em> returns one value,
 845                         the line stipple repeat factor. The initial value is 1.
 846                         See <a class="citerefentry" href="glLineStipple.xml"><span class="citerefentry"><span class="refentrytitle">glLineStipple</span></span></a>.
 847                     </p></dd><dt><span class="term"><code class="constant">GL_LINE_WIDTH</code></span></dt><dd><p>
 848                           </p><p>
 849                         <em class="parameter"><code>params</code></em> returns one value,
 850                         the line width as specified with <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>. The initial value is
 851                         1.
 852                     </p></dd><dt><span class="term"><code class="constant">GL_LINE_WIDTH_GRANULARITY</code></span></dt><dd><p>
 853                           </p><p>
 854                         <em class="parameter"><code>params</code></em> returns one value,
 855                         the width difference between adjacent supported widths for antialiased lines.
 856                         See <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.
 857                     </p></dd><dt><span class="term"><code class="constant">GL_LINE_WIDTH_RANGE</code></span></dt><dd><p>
 858                           </p><p>
 859                         <em class="parameter"><code>params</code></em> returns two values:
 860                         the smallest and largest supported widths for antialiased
 861                         lines.
 862                         See <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.
 863                     </p></dd><dt><span class="term"><code class="constant">GL_LIST_BASE</code></span></dt><dd><p>
 864                           </p><p>
 865                         <em class="parameter"><code>params</code></em> returns one value,
 866                         the base offset added to all names in arrays presented to
 867                         <a class="citerefentry" href="glCallLists.xml"><span class="citerefentry"><span class="refentrytitle">glCallLists</span></span></a>. The initial value is 0.
 868                         See <a class="citerefentry" href="glListBase.xml"><span class="citerefentry"><span class="refentrytitle">glListBase</span></span></a>.
 869                     </p></dd><dt><span class="term"><code class="constant">GL_LIST_INDEX</code></span></dt><dd><p>
 870                           </p><p>
 871                         <em class="parameter"><code>params</code></em> returns one value,
 872                         the name of the display list currently under construction.
 873                         0 is returned if no display list is currently under
 874                         construction. The initial value is 0.
 875                         See <a class="citerefentry" href="glNewList.xml"><span class="citerefentry"><span class="refentrytitle">glNewList</span></span></a>.
 876                     </p></dd><dt><span class="term"><code class="constant">GL_LIST_MODE</code></span></dt><dd><p>
 877                           </p><p>
 878                         <em class="parameter"><code>params</code></em> returns one value,
 879                         a symbolic constant indicating the construction mode of the display list
 880                         currently under construction. The initial value is 0.
 881                         See <a class="citerefentry" href="glNewList.xml"><span class="citerefentry"><span class="refentrytitle">glNewList</span></span></a>.
 882                     </p></dd><dt><span class="term"><code class="constant">GL_LOGIC_OP_MODE</code></span></dt><dd><p>
 883                           </p><p>
 884                         <em class="parameter"><code>params</code></em> returns one value,
 885                         a symbolic constant indicating the selected logic operation
 886                         mode. The initial value is <code class="constant">GL_COPY</code>.
 887                         See <a class="citerefentry" href="glLogicOp.xml"><span class="citerefentry"><span class="refentrytitle">glLogicOp</span></span></a>.
 888                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_COLOR_4</code></span></dt><dd><p>
 889                           </p><p>
 890                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 891                         1D evaluation generates colors. The initial value is <code class="constant">GL_FALSE</code>.
 892                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 893                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_GRID_DOMAIN</code></span></dt><dd><p>
 894                           </p><p>
 895                         <em class="parameter"><code>params</code></em> returns two values:
 896                         the endpoints of the 1D map's grid domain. The initial value is (0, 1).
 897                         See <a class="citerefentry" href="glMapGrid.xml"><span class="citerefentry"><span class="refentrytitle">glMapGrid</span></span></a>.
 898                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_GRID_SEGMENTS</code></span></dt><dd><p>
 899                           </p><p>
 900                         <em class="parameter"><code>params</code></em> returns one value,
 901                         the number of partitions in the 1D map's grid domain. The initial value
 902                         is 1.
 903                         See <a class="citerefentry" href="glMapGrid.xml"><span class="citerefentry"><span class="refentrytitle">glMapGrid</span></span></a>.
 904                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_INDEX</code></span></dt><dd><p>
 905                           </p><p>
 906                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 907                         1D evaluation generates color indices. The initial value is <code class="constant">GL_FALSE</code>.
 908                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 909                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_NORMAL</code></span></dt><dd><p>
 910                           </p><p>
 911                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 912                         1D evaluation generates normals. The initial value is <code class="constant">GL_FALSE</code>.
 913                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 914                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_TEXTURE_COORD_1</code></span></dt><dd><p>
 915                           </p><p>
 916                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 917                         1D evaluation generates 1D texture coordinates. The initial value is
 918                         <code class="constant">GL_FALSE</code>.
 919                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 920                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_TEXTURE_COORD_2</code></span></dt><dd><p>
 921                           </p><p>
 922                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 923                         1D evaluation generates 2D texture coordinates. The initial value is
 924                         <code class="constant">GL_FALSE</code>.
 925                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 926                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_TEXTURE_COORD_3</code></span></dt><dd><p>
 927                           </p><p>
 928                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 929                         1D evaluation generates 3D texture coordinates. The initial value is
 930                         <code class="constant">GL_FALSE</code>.
 931                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 932                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_TEXTURE_COORD_4</code></span></dt><dd><p>
 933                           </p><p>
 934                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 935                         1D evaluation generates 4D texture coordinates. The initial value is
 936                         <code class="constant">GL_FALSE</code>.
 937                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 938                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_VERTEX_3</code></span></dt><dd><p>
 939                           </p><p>
 940                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 941                         1D evaluation generates 3D vertex coordinates. The initial value is
 942                         <code class="constant">GL_FALSE</code>.
 943                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 944                     </p></dd><dt><span class="term"><code class="constant">GL_MAP1_VERTEX_4</code></span></dt><dd><p>
 945                           </p><p>
 946                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 947                         1D evaluation generates 4D vertex coordinates. The initial value is
 948                         <code class="constant">GL_FALSE</code>.
 949                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a>.
 950                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_COLOR_4</code></span></dt><dd><p>
 951                           </p><p>
 952                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 953                         2D evaluation generates colors. The initial value is <code class="constant">GL_FALSE</code>.
 954                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
 955                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_GRID_DOMAIN</code></span></dt><dd><p>
 956                           </p><p>
 957                         <em class="parameter"><code>params</code></em> returns four values:
 958                         the endpoints of the 2D map's
 959                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">i</mml:mi></mml:math>
 960                         and
 961                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">j</mml:mi></mml:math>
 962                         grid domains. The initial value
 963                         is (0,1; 0,1).
 964                         See <a class="citerefentry" href="glMapGrid.xml"><span class="citerefentry"><span class="refentrytitle">glMapGrid</span></span></a>.
 965                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_GRID_SEGMENTS</code></span></dt><dd><p>
 966                           </p><p>
 967                         <em class="parameter"><code>params</code></em> returns two values:
 968                         the number of partitions in the 2D map's
 969                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">i</mml:mi></mml:math>
 970                         and
 971                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">j</mml:mi></mml:math>
 972                         grid
 973                         domains. The initial value is (1,1).
 974                         See <a class="citerefentry" href="glMapGrid.xml"><span class="citerefentry"><span class="refentrytitle">glMapGrid</span></span></a>.
 975                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_INDEX</code></span></dt><dd><p>
 976                           </p><p>
 977                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 978                         2D evaluation generates color indices. The initial value is <code class="constant">GL_FALSE</code>.
 979                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
 980                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_NORMAL</code></span></dt><dd><p>
 981                           </p><p>
 982                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 983                         2D evaluation generates normals. The initial value is <code class="constant">GL_FALSE</code>.
 984                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
 985                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_TEXTURE_COORD_1</code></span></dt><dd><p>
 986                           </p><p>
 987                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 988                         2D evaluation generates 1D texture coordinates. The initial value is
 989                         <code class="constant">GL_FALSE</code>.
 990                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
 991                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_TEXTURE_COORD_2</code></span></dt><dd><p>
 992                           </p><p>
 993                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
 994                         2D evaluation generates 2D texture coordinates. The initial value is
 995                         <code class="constant">GL_FALSE</code>.
 996                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
 997                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_TEXTURE_COORD_3</code></span></dt><dd><p>
 998                           </p><p>
 999                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
1000                         2D evaluation generates 3D texture coordinates. The initial value is
1001                         <code class="constant">GL_FALSE</code>.
1002                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
1003                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_TEXTURE_COORD_4</code></span></dt><dd><p>
1004                           </p><p>
1005                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
1006                         2D evaluation generates 4D texture coordinates. The initial value is
1007                         <code class="constant">GL_FALSE</code>.
1008                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
1009                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_VERTEX_3</code></span></dt><dd><p>
1010                           </p><p>
1011                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
1012                         2D evaluation generates 3D vertex coordinates. The initial value is
1013                         <code class="constant">GL_FALSE</code>.
1014                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
1015                     </p></dd><dt><span class="term"><code class="constant">GL_MAP2_VERTEX_4</code></span></dt><dd><p>
1016                           </p><p>
1017                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether
1018                         2D evaluation generates 4D vertex coordinates. The initial value is
1019                         <code class="constant">GL_FALSE</code>.
1020                         See <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
1021                     </p></dd><dt><span class="term"><code class="constant">GL_MAP_COLOR</code></span></dt><dd><p>
1022                           </p><p>
1023                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating if colors and
1024                         color indices are to be replaced by table lookup during pixel
1025                         transfers. The initial value is <code class="constant">GL_FALSE</code>.
1026                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1027                     </p></dd><dt><span class="term"><code class="constant">GL_MAP_STENCIL</code></span></dt><dd><p>
1028                           </p><p>
1029                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating if stencil indices
1030                         are to be replaced by table lookup during pixel transfers. The initial
1031                         value is <code class="constant">GL_FALSE</code>.
1032                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1033                     </p></dd><dt><span class="term"><code class="constant">GL_MATRIX_MODE</code></span></dt><dd><p>
1034                           </p><p>
1035                         <em class="parameter"><code>params</code></em> returns one value,
1036                         a symbolic constant indicating which matrix stack is currently the
1037                         target of all matrix operations. The initial value is <code class="constant">GL_MODELVIEW</code>.
1038                         See <a class="citerefentry" href="glMatrixMode.xml"><span class="citerefentry"><span class="refentrytitle">glMatrixMode</span></span></a>.
1039                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_3D_TEXTURE_SIZE</code></span></dt><dd><p>
1040                           </p><p>
1041                         <em class="parameter"><code>params</code></em> returns one value,
1042                         a rough estimate of the largest 3D texture that the GL can handle.
1043                         The value must be at least 16.
1044                         If the GL version is 1.2 or greater, use
1045                         <code class="constant">GL_PROXY_TEXTURE_3D</code> to determine if a texture is too large.
1046                         See <a class="citerefentry" href="glTexImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage3D</span></span></a>.
1047                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_CLIENT_ATTRIB_STACK_DEPTH</code></span></dt><dd><p>
1048                           </p><p>
1049                         <em class="parameter"><code>params</code></em> returns one value indicating the maximum supported depth
1050                         of the client attribute stack.
1051                         See <a class="citerefentry" href="glPushClientAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glPushClientAttrib</span></span></a>.
1052                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_ATTRIB_STACK_DEPTH</code></span></dt><dd><p>
1053                           </p><p>
1054                         <em class="parameter"><code>params</code></em> returns one value,
1055                         the maximum supported depth of the attribute stack. The value must be
1056                         at least 16.
1057                         See <a class="citerefentry" href="glPushAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glPushAttrib</span></span></a>.
1058                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_CLIP_PLANES</code></span></dt><dd><p>
1059                           </p><p>
1060                         <em class="parameter"><code>params</code></em> returns one value,
1061                         the maximum number of application-defined clipping planes. The value must be at least 6.
1062                         See <a class="citerefentry" href="glClipPlane.xml"><span class="citerefentry"><span class="refentrytitle">glClipPlane</span></span></a>.
1063                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_COLOR_MATRIX_STACK_DEPTH</code></span></dt><dd><p>
1064                           </p><p>
1065                         <em class="parameter"><code>params</code></em> returns one value, the maximum supported depth of the color matrix
1066                         stack.  The value must be at least 2.
1067                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1068                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS</code></span></dt><dd><p>
1069                           </p><p>
1070                         <em class="parameter"><code>params</code></em> returns one value, the maximum supported texture image units that
1071                         can be used to access texture maps from the vertex shader and the fragment processor combined.
1072                         If both the vertex shader and the fragment processing stage access the same texture image
1073                         unit, then that counts as using two texture image units against this limit.
1074                         The value must be at least 2.
1075                         See <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a>.
1076                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_CUBE_MAP_TEXTURE_SIZE</code></span></dt><dd><p>
1077                           </p><p>
1078                         <em class="parameter"><code>params</code></em> returns one value.
1079                         The value gives a rough estimate of the largest cube-map texture that
1080                         the GL can handle. The value must be at least 16.
1081                         If the GL version is 1.3 or greater, use <code class="constant">GL_PROXY_TEXTURE_CUBE_MAP</code>
1082                         to determine if a texture is too large.
1083                         See <a class="citerefentry" href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>.
1084                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_DRAW_BUFFERS</code></span></dt><dd><p>
1085                           </p><p>
1086                         <em class="parameter"><code>params</code></em> returns one value, the maximum number
1087                         of simultaneous output colors allowed from a fragment shader using the
1088                         <code class="code">gl_FragData</code> built-in array.  The value must be at least 1.
1089                         See <a class="citerefentry" href="glDrawBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glDrawBuffers</span></span></a>.
1090                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_ELEMENTS_INDICES</code></span></dt><dd><p>
1091                           </p><p>
1092                         <em class="parameter"><code>params</code></em> returns one value,
1093                         the recommended maximum number of vertex array indices.
1094                         See <a class="citerefentry" href="glDrawRangeElements.xml"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElements</span></span></a>.
1095                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_ELEMENTS_VERTICES</code></span></dt><dd><p>
1096                           </p><p>
1097                         <em class="parameter"><code>params</code></em> returns one value,
1098                         the recommended maximum number of vertex array vertices.
1099                         See <a class="citerefentry" href="glDrawRangeElements.xml"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElements</span></span></a>.
1100                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_EVAL_ORDER</code></span></dt><dd><p>
1101                           </p><p>
1102                         <em class="parameter"><code>params</code></em> returns one value,
1103                         the maximum equation order supported by 1D and 2D
1104                         evaluators. The value must be at least 8.
1105                         See <a class="citerefentry" href="glMap1.xml"><span class="citerefentry"><span class="refentrytitle">glMap1</span></span></a> and <a class="citerefentry" href="glMap2.xml"><span class="citerefentry"><span class="refentrytitle">glMap2</span></span></a>.
1106                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_FRAGMENT_UNIFORM_COMPONENTS</code></span></dt><dd><p>
1107                           </p><p>
1108                         <em class="parameter"><code>params</code></em> returns one value,
1109                         the maximum number of individual floating-point, integer, or boolean values that can be held
1110                         in uniform variable storage for a fragment shader. The value must be at least 64.
1111                         See <a class="citerefentry" href="glUniform.xml"><span class="citerefentry"><span class="refentrytitle">glUniform</span></span></a>.
1112                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_LIGHTS</code></span></dt><dd><p>
1113                           </p><p>
1114                         <em class="parameter"><code>params</code></em> returns one value,
1115                         the maximum number of lights. The value must be at least 8.
1116                         See <a class="citerefentry" href="glLight.xml"><span class="citerefentry"><span class="refentrytitle">glLight</span></span></a>.
1117                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_LIST_NESTING</code></span></dt><dd><p>
1118                           </p><p>
1119                         <em class="parameter"><code>params</code></em> returns one value,
1120                         the maximum recursion depth allowed during display-list
1121                         traversal. The value must be at least 64.
1122                         See <a class="citerefentry" href="glCallList.xml"><span class="citerefentry"><span class="refentrytitle">glCallList</span></span></a>.
1123                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_MODELVIEW_STACK_DEPTH</code></span></dt><dd><p>
1124                           </p><p>
1125                         <em class="parameter"><code>params</code></em> returns one value,
1126                         the maximum supported depth of the modelview matrix stack. The value must
1127                         be at least 32.
1128                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1129                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_NAME_STACK_DEPTH</code></span></dt><dd><p>
1130                           </p><p>
1131                         <em class="parameter"><code>params</code></em> returns one value,
1132                         the maximum supported depth of the selection name stack. The value must be at least 64.
1133                         See <a class="citerefentry" href="glPushName.xml"><span class="citerefentry"><span class="refentrytitle">glPushName</span></span></a>.
1134                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_PIXEL_MAP_TABLE</code></span></dt><dd><p>
1135                           </p><p>
1136                         <em class="parameter"><code>params</code></em> returns one value,
1137                         the maximum supported size of a <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a> lookup table.
1138                         The value must be at least 32.
1139                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1140                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_PROJECTION_STACK_DEPTH</code></span></dt><dd><p>
1141                           </p><p>
1142                         <em class="parameter"><code>params</code></em> returns one value, the maximum supported depth of the projection
1143                         matrix stack. The value must be at least 2.
1144                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1145                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_TEXTURE_COORDS</code></span></dt><dd><p>
1146                           </p><p>
1147                         <em class="parameter"><code>params</code></em> returns one value,
1148                         the maximum number of texture coordinate sets available to vertex and fragment shaders.
1149                         The value must be at least 2.
1150                         See <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a> and
1151                         <a class="citerefentry" href="glClientActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glClientActiveTexture</span></span></a>.
1152                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_TEXTURE_IMAGE_UNITS</code></span></dt><dd><p>
1153                           </p><p>
1154                         <em class="parameter"><code>params</code></em> returns one value, the maximum supported texture image units that
1155                         can be used to access texture maps from the fragment shader.
1156                         The value must be at least 2.
1157                         See <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a>.
1158                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_TEXTURE_LOD_BIAS</code></span></dt><dd><p>
1159                           </p><p>
1160                         <em class="parameter"><code>params</code></em> returns one value,
1161                         the maximum, absolute value of the texture level-of-detail bias.  The
1162                         value must be at least 4.
1163                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_TEXTURE_SIZE</code></span></dt><dd><p>
1164                           </p><p>
1165                         <em class="parameter"><code>params</code></em> returns one value.
1166                         The value gives a rough estimate of the largest texture that
1167                         the GL can handle. The value must be at least 64.
1168                         If the GL version is 1.1 or greater, use
1169                         <code class="constant">GL_PROXY_TEXTURE_1D</code> or <code class="constant">GL_PROXY_TEXTURE_2D</code>
1170                         to determine if a texture is too large.
1171                         See <a class="citerefentry" href="glTexImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage1D</span></span></a> and <a class="citerefentry" href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>.
1172                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_TEXTURE_STACK_DEPTH</code></span></dt><dd><p>
1173                           </p><p>
1174                         <em class="parameter"><code>params</code></em> returns one value,
1175                         the maximum supported depth of the texture matrix stack. The value must be at least 2.
1176                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1177                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_TEXTURE_UNITS</code></span></dt><dd><p>
1178                           </p><p>
1179                         <em class="parameter"><code>params</code></em> returns a single value indicating the number of conventional
1180                         texture units supported. Each conventional texture unit includes both a texture coordinate set
1181                         and a texture image unit.  Conventional texture units may be used for fixed-function (non-shader)
1182                         rendering.  The value must be at least 2.  Additional texture coordinate sets and texture
1183                         image units may be accessed from vertex and fragment shaders.
1184                         See <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a> and
1185                         <a class="citerefentry" href="glClientActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glClientActiveTexture</span></span></a>.
1186                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_VARYING_FLOATS</code></span></dt><dd><p>
1187                           </p><p>
1188                         <em class="parameter"><code>params</code></em> returns one value,
1189                         the maximum number of interpolators available for processing varying variables used by
1190                         vertex and fragment shaders. This value represents the number of individual floating-point
1191                         values that can be interpolated; varying variables declared as vectors, matrices, and arrays
1192                         will all consume multiple interpolators. The value must be at least 32.
1193                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_VERTEX_ATTRIBS</code></span></dt><dd><p>
1194                           </p><p>
1195                         <em class="parameter"><code>params</code></em> returns one value,
1196                         the maximum number of 4-component generic vertex attributes accessible to a vertex shader.
1197                         The value must be at least 16.
1198                         See <a class="citerefentry" href="glVertexAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glVertexAttrib</span></span></a>.
1199                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS</code></span></dt><dd><p>
1200                           </p><p>
1201                         <em class="parameter"><code>params</code></em> returns one value, the maximum supported texture image units that
1202                         can be used to access texture maps from the vertex shader. The value may be 0.
1203                         See <a class="citerefentry" href="glActiveTexture.xml"><span class="citerefentry"><span class="refentrytitle">glActiveTexture</span></span></a>.
1204                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_VERTEX_UNIFORM_COMPONENTS</code></span></dt><dd><p>
1205                           </p><p>
1206                         <em class="parameter"><code>params</code></em> returns one value,
1207                         the maximum number of individual floating-point, integer, or boolean values that can be held
1208                         in uniform variable storage for a vertex shader. The value must be at least 512.
1209                         See <a class="citerefentry" href="glUniform.xml"><span class="citerefentry"><span class="refentrytitle">glUniform</span></span></a>.
1210                     </p></dd><dt><span class="term"><code class="constant">GL_MAX_VIEWPORT_DIMS</code></span></dt><dd><p>
1211                           </p><p>
1212                         <em class="parameter"><code>params</code></em> returns two values:
1213                         the maximum supported width and height of the viewport.
1214                         These must be at least as large as the visible dimensions of the display
1215                         being rendered to.
1216                         See <a class="citerefentry" href="glViewport.xml"><span class="citerefentry"><span class="refentrytitle">glViewport</span></span></a>.
1217                     </p></dd><dt><span class="term"><code class="constant">GL_MINMAX</code></span></dt><dd><p>
1218                           </p><p>
1219                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether pixel minmax
1220                         values are computed.  The initial value is <code class="constant">GL_FALSE</code>.
1221                         See <a class="citerefentry" href="glMinmax.xml"><span class="citerefentry"><span class="refentrytitle">glMinmax</span></span></a>.
1222                     </p></dd><dt><span class="term"><code class="constant">GL_MODELVIEW_MATRIX</code></span></dt><dd><p>
1223                           </p><p>
1224                         <em class="parameter"><code>params</code></em> returns sixteen values:
1225                         the modelview matrix on the top of the modelview matrix stack. Initially
1226                         this matrix is the identity matrix.
1227                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1228                     </p></dd><dt><span class="term"><code class="constant">GL_MODELVIEW_STACK_DEPTH</code></span></dt><dd><p>
1229                           </p><p>
1230                         <em class="parameter"><code>params</code></em> returns one value,
1231                         the number of matrices on the modelview matrix stack.
1232                         The initial value is 1.
1233                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1234                     </p></dd><dt><span class="term"><code class="constant">GL_NAME_STACK_DEPTH</code></span></dt><dd><p>
1235                           </p><p>
1236                         <em class="parameter"><code>params</code></em> returns one value,
1237                         the number of names on the selection name stack. The initial value is 0.
1238                         See <a class="citerefentry" href="glPushName.xml"><span class="citerefentry"><span class="refentrytitle">glPushName</span></span></a>.
1239                     </p></dd><dt><span class="term"><code class="constant">GL_NORMAL_ARRAY</code></span></dt><dd><p>
1240                           </p><p>
1241                         <em class="parameter"><code>params</code></em> returns a single boolean value, indicating whether the normal
1242                         array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1243                         See <a class="citerefentry" href="glNormalPointer.xml"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.
1244                     </p></dd><dt><span class="term"><code class="constant">GL_NORMAL_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
1245                           </p><p>
1246                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
1247                         associated with the normal array. This buffer object would have been bound to the
1248                         target <code class="constant">GL_ARRAY_BUFFER</code> at the time of the most recent call to
1249                         <a class="citerefentry" href="glNormalPointer.xml"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.
1250                         If no buffer object was bound to this target, 0 is returned.  The initial value is 0.
1251                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
1252                     </p></dd><dt><span class="term"><code class="constant">GL_NORMAL_ARRAY_STRIDE</code></span></dt><dd><p>
1253                           </p><p>
1254                         <em class="parameter"><code>params</code></em> returns one value,
1255                         the byte offset between consecutive normals in the normal
1256                         array. The initial value is 0.
1257                         See <a class="citerefentry" href="glNormalPointer.xml"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.
1258                     </p></dd><dt><span class="term"><code class="constant">GL_NORMAL_ARRAY_TYPE</code></span></dt><dd><p>
1259                           </p><p>
1260                         <em class="parameter"><code>params</code></em> returns one value,
1261                         the data type of each coordinate in the normal array. The initial value is
1262                         <code class="constant">GL_FLOAT</code>.
1263                         See <a class="citerefentry" href="glNormalPointer.xml"><span class="citerefentry"><span class="refentrytitle">glNormalPointer</span></span></a>.
1264                     </p></dd><dt><span class="term"><code class="constant">GL_NORMALIZE</code></span></dt><dd><p>
1265                           </p><p>
1266                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether normals are
1267                         automatically scaled to unit length after they have been transformed to
1268                         eye coordinates. The initial value is <code class="constant">GL_FALSE</code>.
1269                         See <a class="citerefentry" href="glNormal.xml"><span class="citerefentry"><span class="refentrytitle">glNormal</span></span></a>.
1270                     </p></dd><dt><span class="term"><code class="constant">GL_NUM_COMPRESSED_TEXTURE_FORMATS</code></span></dt><dd><p>
1271                           </p><p>
1272                         <em class="parameter"><code>params</code></em> returns a single integer value indicating the number of available
1273                         compressed texture formats.  The minimum value is 0.
1274                         See <a class="citerefentry" href="glCompressedTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage2D</span></span></a>.
1275                     </p></dd><dt><span class="term"><code class="constant">GL_PACK_ALIGNMENT</code></span></dt><dd><p>
1276                           </p><p>
1277                         <em class="parameter"><code>params</code></em> returns one value,
1278                         the byte alignment used for writing pixel data to memory. The initial
1279                         value is 4.
1280                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
1281                     </p></dd><dt><span class="term"><code class="constant">GL_PACK_IMAGE_HEIGHT</code></span></dt><dd><p>
1282                           </p><p>
1283                         <em class="parameter"><code>params</code></em> returns one value,
1284                         the image height used for writing pixel data to memory.  The initial
1285                         value is 0.
1286                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
1287                     </p></dd><dt><span class="term"><code class="constant">GL_PACK_LSB_FIRST</code></span></dt><dd><p>
1288                           </p><p>
1289                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether single-bit
1290                         pixels being written to memory are written first to the least significant
1291                         bit of each unsigned byte. The initial value is <code class="constant">GL_FALSE</code>.
1292                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
1293                     </p></dd><dt><span class="term"><code class="constant">GL_PACK_ROW_LENGTH</code></span></dt><dd><p>
1294                           </p><p>
1295                         <em class="parameter"><code>params</code></em> returns one value,
1296                         the row length used for writing pixel data to memory. The initial value is
1297                         0.
1298                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
1299                     </p></dd><dt><span class="term"><code class="constant">GL_PACK_SKIP_IMAGES</code></span></dt><dd><p>
1300                           </p><p>
1301                         <em class="parameter"><code>params</code></em> returns one value,
1302                         the number of pixel images skipped before the first pixel is written
1303                         into memory. The initial value is 0.
1304                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
1305                     </p></dd><dt><span class="term"><code class="constant">GL_PACK_SKIP_PIXELS</code></span></dt><dd><p>
1306                           </p><p>
1307                         <em class="parameter"><code>params</code></em> returns one value,
1308                         the number of pixel locations skipped before the first pixel is written
1309                         into memory. The initial value is 0.
1310                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
1311                     </p></dd><dt><span class="term"><code class="constant">GL_PACK_SKIP_ROWS</code></span></dt><dd><p>
1312                           </p><p>
1313                         <em class="parameter"><code>params</code></em> returns one value,
1314                         the number of rows of pixel locations skipped before the first pixel is written
1315                         into memory. The initial value is 0.
1316                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
1317                     </p></dd><dt><span class="term"><code class="constant">GL_PACK_SWAP_BYTES</code></span></dt><dd><p>
1318                           </p><p>
1319                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the bytes of
1320                         two-byte and four-byte pixel indices and components are swapped before being
1321                         written to memory. The initial value is <code class="constant">GL_FALSE</code>.
1322                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
1323                     </p></dd><dt><span class="term"><code class="constant">GL_PERSPECTIVE_CORRECTION_HINT</code></span></dt><dd><p>
1324                           </p><p>
1325                         <em class="parameter"><code>params</code></em> returns one value,
1326                         a symbolic constant indicating the mode of the perspective correction
1327                         hint. The initial value is <code class="constant">GL_DONT_CARE</code>.
1328                         See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
1329                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_A_TO_A_SIZE</code></span></dt><dd><p>
1330                           </p><p>
1331                         <em class="parameter"><code>params</code></em> returns one value,
1332                         the size of the alpha-to-alpha pixel translation table.
1333                         The initial value is 1.
1334                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1335                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_B_TO_B_SIZE</code></span></dt><dd><p>
1336                           </p><p>
1337                         <em class="parameter"><code>params</code></em> returns one value,
1338                         the size of the blue-to-blue pixel translation table.
1339                         The initial value is 1.
1340                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1341                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_G_TO_G_SIZE</code></span></dt><dd><p>
1342                           </p><p>
1343                         <em class="parameter"><code>params</code></em> returns one value,
1344                         the size of the green-to-green pixel translation table.
1345                         The initial value is 1.
1346                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1347                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_I_TO_A_SIZE</code></span></dt><dd><p>
1348                           </p><p>
1349                         <em class="parameter"><code>params</code></em> returns one value,
1350                         the size of the index-to-alpha pixel translation table.
1351                         The initial value is 1.
1352                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1353                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_I_TO_B_SIZE</code></span></dt><dd><p>
1354                           </p><p>
1355                         <em class="parameter"><code>params</code></em> returns one value,
1356                         the size of the index-to-blue pixel translation table.
1357                         The initial value is 1.
1358                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1359                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_I_TO_G_SIZE</code></span></dt><dd><p>
1360                           </p><p>
1361                         <em class="parameter"><code>params</code></em> returns one value,
1362                         the size of the index-to-green pixel translation table.
1363                         The initial value is 1.
1364                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1365                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_I_TO_I_SIZE</code></span></dt><dd><p>
1366                           </p><p>
1367                         <em class="parameter"><code>params</code></em> returns one value,
1368                         the size of the index-to-index pixel translation table.
1369                         The initial value is 1.
1370                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1371                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_I_TO_R_SIZE</code></span></dt><dd><p>
1372                           </p><p>
1373                         <em class="parameter"><code>params</code></em> returns one value,
1374                         the size of the index-to-red pixel translation table.
1375                         The initial value is 1.
1376                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1377                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_R_TO_R_SIZE</code></span></dt><dd><p>
1378                           </p><p>
1379                         <em class="parameter"><code>params</code></em> returns one value,
1380                         the size of the red-to-red pixel translation table.
1381                         The initial value is 1.
1382                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1383                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_MAP_S_TO_S_SIZE</code></span></dt><dd><p>
1384                           </p><p>
1385                         <em class="parameter"><code>params</code></em> returns one value,
1386                         the size of the stencil-to-stencil pixel translation table.
1387                         The initial value is 1.
1388                         See <a class="citerefentry" href="glPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glPixelMap</span></span></a>.
1389                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_PACK_BUFFER_BINDING</code></span></dt><dd><p>
1390                           </p><p>
1391                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
1392                         currently bound to the target <code class="constant">GL_PIXEL_PACK_BUFFER</code>. If no buffer object
1393                         is bound to this target, 0 is returned.  The initial value is 0.
1394                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
1395                     </p></dd><dt><span class="term"><code class="constant">GL_PIXEL_UNPACK_BUFFER_BINDING</code></span></dt><dd><p>
1396                           </p><p>
1397                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
1398                         currently bound to the target <code class="constant">GL_PIXEL_UNPACK_BUFFER</code>. If no buffer object
1399                         is bound to this target, 0 is returned.  The initial value is 0.
1400                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
1401                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_DISTANCE_ATTENUATION</code></span></dt><dd><p>
1402                           </p><p>
1403                         <em class="parameter"><code>params</code></em> returns three values,
1404                         the coefficients for computing the attenuation value for points.
1405                         See <a class="citerefentry" href="glPointParameter.xml"><span class="citerefentry"><span class="refentrytitle">glPointParameter</span></span></a>.
1406                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_FADE_THRESHOLD_SIZE</code></span></dt><dd><p>
1407                           </p><p>
1408                         <em class="parameter"><code>params</code></em> returns one value,
1409                         the point size threshold for determining the point size.
1410                         See <a class="citerefentry" href="glPointParameter.xml"><span class="citerefentry"><span class="refentrytitle">glPointParameter</span></span></a>.
1411                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_SIZE</code></span></dt><dd><p>
1412                           </p><p>
1413                         <em class="parameter"><code>params</code></em> returns one value,
1414                         the point size as specified by <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>. The initial value is 1.
1415                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_SIZE_GRANULARITY</code></span></dt><dd><p>
1416                           </p><p>
1417                         <em class="parameter"><code>params</code></em> returns one value,
1418                         the size difference between adjacent supported sizes for antialiased points.
1419                         See <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
1420                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_SIZE_MAX</code></span></dt><dd><p>
1421                           </p><p>
1422                         <em class="parameter"><code>params</code></em> returns one value,
1423                         the upper bound for the attenuated point sizes.  The initial value is 0.0.
1424                         See <a class="citerefentry" href="glPointParameter.xml"><span class="citerefentry"><span class="refentrytitle">glPointParameter</span></span></a>.
1425                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_SIZE_MIN</code></span></dt><dd><p>
1426                           </p><p>
1427                         <em class="parameter"><code>params</code></em> returns one value,
1428                         the lower bound for the attenuated point sizes. The initial value is 1.0.
1429                         See <a class="citerefentry" href="glPointParameter.xml"><span class="citerefentry"><span class="refentrytitle">glPointParameter</span></span></a>.
1430                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_SIZE_RANGE</code></span></dt><dd><p>
1431                           </p><p>
1432                         <em class="parameter"><code>params</code></em> returns two values:
1433                         the smallest and largest supported sizes for antialiased
1434                         points. The smallest size must be at most 1, and the largest size must
1435                         be at least 1.
1436                         See <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
1437                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_SMOOTH</code></span></dt><dd><p>
1438                           </p><p>
1439                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether antialiasing of
1440                         points is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1441                         See <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
1442                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_SMOOTH_HINT</code></span></dt><dd><p>
1443                           </p><p>
1444                         <em class="parameter"><code>params</code></em> returns one value,
1445                         a symbolic constant indicating the mode of the point antialiasing
1446                         hint. The initial value is <code class="constant">GL_DONT_CARE</code>.
1447                         See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
1448                     </p></dd><dt><span class="term"><code class="constant">GL_POINT_SPRITE</code></span></dt><dd><p>
1449                           </p><p>
1450                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether point sprite is
1451                         enabled. The initial value is <code class="constant">GL_FALSE</code>.
1452                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_MODE</code></span></dt><dd><p>
1453                           </p><p>
1454                         <em class="parameter"><code>params</code></em> returns two values:
1455                         symbolic constants indicating whether front-facing and back-facing polygons
1456                         are rasterized as points, lines, or filled polygons. The initial value is
1457                         <code class="constant">GL_FILL</code>.
1458                         See <a class="citerefentry" href="glPolygonMode.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonMode</span></span></a>.
1459                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_OFFSET_FACTOR</code></span></dt><dd><p>
1460                           </p><p>
1461                         <em class="parameter"><code>params</code></em> returns one value,
1462                         the scaling factor used to determine the variable offset that is added
1463                         to the depth value of each fragment generated when a polygon is
1464                         rasterized. The initial value is 0.
1465                         See <a class="citerefentry" href="glPolygonOffset.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonOffset</span></span></a>.
1466                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_OFFSET_UNITS</code></span></dt><dd><p>
1467                           </p><p>
1468                         <em class="parameter"><code>params</code></em> returns one value.
1469                         This value is multiplied by an implementation-specific value and then
1470                         added to the depth value of each fragment
1471                         generated when a polygon is rasterized. The initial value is 0.
1472                         See <a class="citerefentry" href="glPolygonOffset.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonOffset</span></span></a>.
1473                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_OFFSET_FILL</code></span></dt><dd><p>
1474                           </p><p>
1475                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether polygon offset
1476                         is enabled for polygons in fill mode. The initial value is <code class="constant">GL_FALSE</code>.
1477                         See <a class="citerefentry" href="glPolygonOffset.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonOffset</span></span></a>.
1478                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_OFFSET_LINE</code></span></dt><dd><p>
1479                           </p><p>
1480                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether polygon offset
1481                         is enabled for polygons in line mode. The initial value is <code class="constant">GL_FALSE</code>.
1482                         See <a class="citerefentry" href="glPolygonOffset.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonOffset</span></span></a>.
1483                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_OFFSET_POINT</code></span></dt><dd><p>
1484                           </p><p>
1485                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether polygon offset
1486                         is enabled for polygons in point mode. The initial value is <code class="constant">GL_FALSE</code>.
1487                         See <a class="citerefentry" href="glPolygonOffset.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonOffset</span></span></a>.
1488                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_SMOOTH</code></span></dt><dd><p>
1489                           </p><p>
1490                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether antialiasing of
1491                         polygons is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1492                         See <a class="citerefentry" href="glPolygonMode.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonMode</span></span></a>.
1493                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_SMOOTH_HINT</code></span></dt><dd><p>
1494                           </p><p>
1495                         <em class="parameter"><code>params</code></em> returns one value,
1496                         a symbolic constant indicating the mode of the polygon antialiasing
1497                         hint. The initial value is <code class="constant">GL_DONT_CARE</code>.
1498                         See <a class="citerefentry" href="glHint.xml"><span class="citerefentry"><span class="refentrytitle">glHint</span></span></a>.
1499                     </p></dd><dt><span class="term"><code class="constant">GL_POLYGON_STIPPLE</code></span></dt><dd><p>
1500                           </p><p>
1501                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether polygon
1502                         stippling is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1503                         See <a class="citerefentry" href="glPolygonStipple.xml"><span class="citerefentry"><span class="refentrytitle">glPolygonStipple</span></span></a>.
1504                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_COLOR_TABLE</code></span></dt><dd><p>
1505                           </p><p>
1506                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether post color
1507                         matrix transformation lookup is enabled.
1508                         The initial value is <code class="constant">GL_FALSE</code>.
1509                         See <a class="citerefentry" href="glColorTable.xml"><span class="citerefentry"><span class="refentrytitle">glColorTable</span></span></a>.
1510                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_RED_BIAS</code></span></dt><dd><p>
1511                           </p><p>
1512                         <em class="parameter"><code>params</code></em> returns one value, the red bias factor applied to RGBA fragments
1513                         after color matrix transformations.
1514                         The initial value is 0.
1515                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1516                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_GREEN_BIAS</code></span></dt><dd><p>
1517                           </p><p>
1518                         <em class="parameter"><code>params</code></em> returns one value, the green bias factor applied to RGBA fragments
1519                         after color matrix transformations.
1520                         The initial value is 0.
1521                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>
1522                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_BLUE_BIAS</code></span></dt><dd><p>
1523                           </p><p>
1524                         <em class="parameter"><code>params</code></em> returns one value, the blue bias factor applied to RGBA fragments
1525                         after color matrix transformations.
1526                         The initial value is 0.
1527                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1528                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_ALPHA_BIAS</code></span></dt><dd><p>
1529                           </p><p>
1530                         <em class="parameter"><code>params</code></em> returns one value, the alpha bias factor applied to RGBA fragments
1531                         after color matrix transformations.
1532                         The initial value is 0.
1533                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1534                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_RED_SCALE</code></span></dt><dd><p>
1535                           </p><p>
1536                         <em class="parameter"><code>params</code></em> returns one value, the red scale factor applied to RGBA fragments
1537                         after color matrix transformations.
1538                         The initial value is 1.
1539                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1540                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_GREEN_SCALE</code></span></dt><dd><p>
1541                           </p><p>
1542                         <em class="parameter"><code>params</code></em> returns one value, the green scale factor applied to RGBA fragments
1543                         after color matrix transformations.
1544                         The initial value is 1.
1545                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1546                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_BLUE_SCALE</code></span></dt><dd><p>
1547                           </p><p>
1548                         <em class="parameter"><code>params</code></em> returns one value, the blue scale factor applied to RGBA fragments
1549                         after color matrix transformations.
1550                         The initial value is 1.
1551                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1552                     </p></dd><dt><span class="term"><code class="constant">GL_POST_COLOR_MATRIX_ALPHA_SCALE</code></span></dt><dd><p>
1553                           </p><p>
1554                         <em class="parameter"><code>params</code></em> returns one value, the alpha scale factor applied to RGBA fragments
1555                         after color matrix transformations.
1556                         The initial value is 1.
1557                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1558                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_COLOR_TABLE</code></span></dt><dd><p>
1559                           </p><p>
1560                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether post convolution
1561                         lookup is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1562                         See <a class="citerefentry" href="glColorTable.xml"><span class="citerefentry"><span class="refentrytitle">glColorTable</span></span></a>.
1563                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_RED_BIAS</code></span></dt><dd><p>
1564                           </p><p>
1565                         <em class="parameter"><code>params</code></em> returns one value, the red bias factor applied to RGBA fragments
1566                         after convolution. The initial value is 0.
1567                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1568                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_GREEN_BIAS</code></span></dt><dd><p>
1569                           </p><p>
1570                         <em class="parameter"><code>params</code></em> returns one value, the green bias factor applied to RGBA fragments
1571                         after convolution. The initial value is 0.
1572                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1573                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_BLUE_BIAS</code></span></dt><dd><p>
1574                           </p><p>
1575                         <em class="parameter"><code>params</code></em> returns one value, the blue bias factor applied to RGBA fragments
1576                         after convolution. The initial value is 0.
1577                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1578                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_ALPHA_BIAS</code></span></dt><dd><p>
1579                           </p><p>
1580                         <em class="parameter"><code>params</code></em> returns one value, the alpha bias factor applied to RGBA fragments
1581                         after convolution. The initial value is 0.
1582                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1583                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_RED_SCALE</code></span></dt><dd><p>
1584                           </p><p>
1585                         <em class="parameter"><code>params</code></em> returns one value, the red scale factor applied to RGBA fragments
1586                         after convolution. The initial value is 1.
1587                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1588                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_GREEN_SCALE</code></span></dt><dd><p>
1589                           </p><p>
1590                         <em class="parameter"><code>params</code></em> returns one value, the green scale factor applied to RGBA fragments
1591                         after convolution. The initial value is 1.
1592                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1593                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_BLUE_SCALE</code></span></dt><dd><p>
1594                           </p><p>
1595                         <em class="parameter"><code>params</code></em> returns one value, the blue scale factor applied to RGBA fragments
1596                         after convolution. The initial value is 1.
1597                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1598                     </p></dd><dt><span class="term"><code class="constant">GL_POST_CONVOLUTION_ALPHA_SCALE</code></span></dt><dd><p>
1599                           </p><p>
1600                         <em class="parameter"><code>params</code></em> returns one value, the alpha scale factor applied to RGBA fragments
1601                         after convolution. The initial value is 1.
1602                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1603                     </p></dd><dt><span class="term"><code class="constant">GL_PROJECTION_MATRIX</code></span></dt><dd><p>
1604                           </p><p>
1605                         <em class="parameter"><code>params</code></em> returns sixteen values:
1606                         the projection matrix on the top of the projection matrix
1607                         stack. Initially this matrix is the identity matrix.
1608                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1609                     </p></dd><dt><span class="term"><code class="constant">GL_PROJECTION_STACK_DEPTH</code></span></dt><dd><p>
1610                           </p><p>
1611                         <em class="parameter"><code>params</code></em> returns one value,
1612                         the number of matrices on the projection matrix stack.
1613                         The initial value is 1.
1614                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1615                     </p></dd><dt><span class="term"><code class="constant">GL_READ_BUFFER</code></span></dt><dd><p>
1616                           </p><p>
1617                         <em class="parameter"><code>params</code></em> returns one value,
1618                         a symbolic constant indicating which color buffer is selected for
1619                         reading. The initial value is <code class="constant">GL_BACK</code> if there is a back buffer,
1620                         otherwise it is <code class="constant">GL_FRONT</code>.
1621                         See
1622                         <a class="citerefentry" href="glReadPixels.xml"><span class="citerefentry"><span class="refentrytitle">glReadPixels</span></span></a> and <a class="citerefentry" href="glAccum.xml"><span class="citerefentry"><span class="refentrytitle">glAccum</span></span></a>.
1623                     </p></dd><dt><span class="term"><code class="constant">GL_RED_BIAS</code></span></dt><dd><p>
1624                           </p><p>
1625                         <em class="parameter"><code>params</code></em> returns one value,
1626                         the red bias factor used during pixel transfers. The initial value is 0.
1627                     </p></dd><dt><span class="term"><code class="constant">GL_RED_BITS</code></span></dt><dd><p>
1628                           </p><p>
1629                         <em class="parameter"><code>params</code></em> returns one value,
1630                         the number of red bitplanes in each color buffer.
1631                     </p></dd><dt><span class="term"><code class="constant">GL_RED_SCALE</code></span></dt><dd><p>
1632                           </p><p>
1633                         <em class="parameter"><code>params</code></em> returns one value,
1634                         the red scale factor used during pixel transfers. The initial value is 1.
1635                         See <a class="citerefentry" href="glPixelTransfer.xml"><span class="citerefentry"><span class="refentrytitle">glPixelTransfer</span></span></a>.
1636                     </p></dd><dt><span class="term"><code class="constant">GL_RENDER_MODE</code></span></dt><dd><p>
1637                           </p><p>
1638                         <em class="parameter"><code>params</code></em> returns one value,
1639                         a symbolic constant indicating whether the GL is in render,
1640                         select,
1641                         or feedback mode. The initial value is <code class="constant">GL_RENDER</code>.
1642                         See <a class="citerefentry" href="glRenderMode.xml"><span class="citerefentry"><span class="refentrytitle">glRenderMode</span></span></a>.
1643                     </p></dd><dt><span class="term"><code class="constant">GL_RESCALE_NORMAL</code></span></dt><dd><p>
1644                           </p><p>
1645                         <em class="parameter"><code>params</code></em> returns single boolean value
1646                         indicating whether normal rescaling is enabled.
1647                         See <a class="citerefentry" href="glEnable.xml"><span class="citerefentry"><span class="refentrytitle">glEnable</span></span></a>.
1648                     </p></dd><dt><span class="term"><code class="constant">GL_RGBA_MODE</code></span></dt><dd><p>
1649                           </p><p>
1650                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the GL is in RGBA
1651                         mode (true) or color index mode (false).
1652                         See <a class="citerefentry" href="glColor.xml"><span class="citerefentry"><span class="refentrytitle">glColor</span></span></a>.
1653                     </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_BUFFERS</code></span></dt><dd><p>
1654                           </p><p>
1655                         <em class="parameter"><code>params</code></em> returns a single integer value indicating the number of sample buffers
1656                         associated with the framebuffer.
1657                         See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
1658                     </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_COVERAGE_VALUE</code></span></dt><dd><p>
1659                           </p><p>
1660                         <em class="parameter"><code>params</code></em> returns a single positive floating-point value indicating the
1661                         current sample coverage value.
1662                         See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
1663                     </p></dd><dt><span class="term"><code class="constant">GL_SAMPLE_COVERAGE_INVERT</code></span></dt><dd><p>
1664                           </p><p>
1665                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating if the temporary
1666                         coverage value should be inverted.
1667                         See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
1668                     </p></dd><dt><span class="term"><code class="constant">GL_SAMPLES</code></span></dt><dd><p>
1669                           </p><p>
1670                         <em class="parameter"><code>params</code></em> returns a single integer value indicating the coverage mask size.
1671                         See <a class="citerefentry" href="glSampleCoverage.xml"><span class="citerefentry"><span class="refentrytitle">glSampleCoverage</span></span></a>.
1672                     </p></dd><dt><span class="term"><code class="constant">GL_SCISSOR_BOX</code></span></dt><dd><p>
1673                           </p><p>
1674                         <em class="parameter"><code>params</code></em> returns four values:
1675                         the
1676                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">x</mml:mi></mml:math>
1677                         and
1678                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">y</mml:mi></mml:math>
1679                         window coordinates of the scissor box,
1680                         followed by its width and height.
1681                         Initially the
1682                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">x</mml:mi></mml:math>
1683                         and
1684                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">y</mml:mi></mml:math>
1685                         window coordinates are both 0 and the
1686                         width and height are set to the size of the window.
1687                         See <a class="citerefentry" href="glScissor.xml"><span class="citerefentry"><span class="refentrytitle">glScissor</span></span></a>.
1688                     </p></dd><dt><span class="term"><code class="constant">GL_SCISSOR_TEST</code></span></dt><dd><p>
1689                           </p><p>
1690                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether scissoring is
1691                         enabled. The initial value is <code class="constant">GL_FALSE</code>.
1692                         See <a class="citerefentry" href="glScissor.xml"><span class="citerefentry"><span class="refentrytitle">glScissor</span></span></a>.
1693                     </p></dd><dt><span class="term"><code class="constant">GL_SECONDARY_COLOR_ARRAY</code></span></dt><dd><p>
1694                           </p><p>
1695                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the secondary color array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1696                         See <a class="citerefentry" href="glSecondaryColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glSecondaryColorPointer</span></span></a>.
1697                     </p></dd><dt><span class="term"><code class="constant">GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
1698                           </p><p>
1699                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
1700                         associated with the secondary color array. This buffer object would have been bound to the
1701                         target <code class="constant">GL_ARRAY_BUFFER</code> at the time of the most recent call to
1702                         <a class="citerefentry" href="glSecondaryColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glSecondaryColorPointer</span></span></a>.
1703                         If no buffer object was bound to this target, 0 is returned.  The initial value is 0.
1704                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
1705                     </p></dd><dt><span class="term"><code class="constant">GL_SECONDARY_COLOR_ARRAY_SIZE</code></span></dt><dd><p>
1706                           </p><p>
1707                         <em class="parameter"><code>params</code></em> returns one value, the number of components per color in the
1708                         secondary color array. The initial value is 3.
1709                         See <a class="citerefentry" href="glSecondaryColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glSecondaryColorPointer</span></span></a>.
1710                     </p></dd><dt><span class="term"><code class="constant">GL_SECONDARY_COLOR_ARRAY_STRIDE</code></span></dt><dd><p>
1711                           </p><p>
1712                         <em class="parameter"><code>params</code></em> returns one value, the byte offset between consecutive colors in
1713                         the secondary color array.  The initial value is 0.
1714                         See <a class="citerefentry" href="glSecondaryColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glSecondaryColorPointer</span></span></a>.
1715                     </p></dd><dt><span class="term"><code class="constant">GL_SECONDARY_COLOR_ARRAY_TYPE</code></span></dt><dd><p>
1716                           </p><p>
1717                         <em class="parameter"><code>params</code></em> returns one value, the data type of each component in the secondary
1718                         color array. The initial value is <code class="constant">GL_FLOAT</code>.
1719                         See <a class="citerefentry" href="glSecondaryColorPointer.xml"><span class="citerefentry"><span class="refentrytitle">glSecondaryColorPointer</span></span></a>.
1720                     </p></dd><dt><span class="term"><code class="constant">GL_SELECTION_BUFFER_SIZE</code></span></dt><dd><p>
1721                           </p><p>
1722                         <em class="parameter"><code>params</code></em> return one value,
1723                         the size of the selection buffer.
1724                         See <a class="citerefentry" href="glSelectBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glSelectBuffer</span></span></a>.
1725                     </p></dd><dt><span class="term"><code class="constant">GL_SEPARABLE_2D</code></span></dt><dd><p>
1726                           </p><p>
1727                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether 2D separable
1728                         convolution is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1729                         See <a class="citerefentry" href="glSeparableFilter2D.xml"><span class="citerefentry"><span class="refentrytitle">glSeparableFilter2D</span></span></a>.
1730                     </p></dd><dt><span class="term"><code class="constant">GL_SHADE_MODEL</code></span></dt><dd><p>
1731                           </p><p>
1732                         <em class="parameter"><code>params</code></em> returns one value,
1733                         a symbolic constant indicating whether the shading mode is flat or
1734                         smooth. The initial value is <code class="constant">GL_SMOOTH</code>.
1735                         See <a class="citerefentry" href="glShadeModel.xml"><span class="citerefentry"><span class="refentrytitle">glShadeModel</span></span></a>.
1736                     </p></dd><dt><span class="term"><code class="constant">GL_SMOOTH_LINE_WIDTH_RANGE</code></span></dt><dd><p>
1737                           </p><p>
1738                         <em class="parameter"><code>params</code></em> returns two values,
1739                         the smallest and largest supported widths for antialiased lines.
1740                         See <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.
1741                     </p></dd><dt><span class="term"><code class="constant">GL_SMOOTH_LINE_WIDTH_GRANULARITY</code></span></dt><dd><p>
1742                           </p><p>
1743                         <em class="parameter"><code>params</code></em> returns one value,
1744                         the granularity of widths for antialiased lines.
1745                         See <a class="citerefentry" href="glLineWidth.xml"><span class="citerefentry"><span class="refentrytitle">glLineWidth</span></span></a>.
1746                     </p></dd><dt><span class="term"><code class="constant">GL_SMOOTH_POINT_SIZE_RANGE</code></span></dt><dd><p>
1747                           </p><p>
1748                         <em class="parameter"><code>params</code></em> returns two values,
1749                         the smallest and largest supported widths for antialiased points.
1750                         See <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
1751                     </p></dd><dt><span class="term"><code class="constant">GL_SMOOTH_POINT_SIZE_GRANULARITY</code></span></dt><dd><p>
1752                           </p><p>
1753                         <em class="parameter"><code>params</code></em> returns one value,
1754                         the granularity of sizes for antialiased points.
1755                         See <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
1756                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_BACK_FAIL</code></span></dt><dd><p>
1757                           </p><p>
1758                         <em class="parameter"><code>params</code></em> returns one value,
1759                         a symbolic constant indicating what action is taken for back-facing polygons when the stencil
1760                         test fails. The initial value is <code class="constant">GL_KEEP</code>.
1761                         See <a class="citerefentry" href="glStencilOpSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOpSeparate</span></span></a>.
1762                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_BACK_FUNC</code></span></dt><dd><p>
1763                           </p><p>
1764                         <em class="parameter"><code>params</code></em> returns one value,
1765                         a symbolic constant indicating what function is used for back-facing polygons to compare the
1766                         stencil reference value with the stencil buffer value. The initial value
1767                         is <code class="constant">GL_ALWAYS</code>.
1768                         See <a class="citerefentry" href="glStencilFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFuncSeparate</span></span></a>.
1769                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_BACK_PASS_DEPTH_FAIL</code></span></dt><dd><p>
1770                           </p><p>
1771                         <em class="parameter"><code>params</code></em> returns one value,
1772                         a symbolic constant indicating what action is taken for back-facing polygons when the stencil
1773                         test passes,
1774                         but the depth test fails. The initial value is <code class="constant">GL_KEEP</code>.
1775                         See <a class="citerefentry" href="glStencilOpSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOpSeparate</span></span></a>.
1776                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_BACK_PASS_DEPTH_PASS</code></span></dt><dd><p>
1777                           </p><p>
1778                         <em class="parameter"><code>params</code></em> returns one value,
1779                         a symbolic constant indicating what action is taken for back-facing polygons when the stencil
1780                         test passes and the depth test passes. The initial value is <code class="constant">GL_KEEP</code>.
1781                         See <a class="citerefentry" href="glStencilOpSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOpSeparate</span></span></a>.
1782                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_BACK_REF</code></span></dt><dd><p>
1783                           </p><p>
1784                         <em class="parameter"><code>params</code></em> returns one value,
1785                         the reference value that is compared with the contents of the stencil
1786                         buffer for back-facing polygons. The initial value is 0.
1787                         See <a class="citerefentry" href="glStencilFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFuncSeparate</span></span></a>.
1788                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_BACK_VALUE_MASK</code></span></dt><dd><p>
1789                           </p><p>
1790                         <em class="parameter"><code>params</code></em> returns one value,
1791                         the mask that is used for back-facing polygons to mask both the stencil reference value and the
1792                         stencil buffer value before they are compared. The initial value is all 1's.
1793                         See <a class="citerefentry" href="glStencilFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFuncSeparate</span></span></a>.
1794                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_BACK_WRITEMASK</code></span></dt><dd><p>
1795                           </p><p>
1796                         <em class="parameter"><code>params</code></em> returns one value,
1797                         the mask that controls writing of the stencil bitplanes for back-facing polygons. The initial value
1798                         is all 1's.
1799                         See <a class="citerefentry" href="glStencilMaskSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilMaskSeparate</span></span></a>.
1800                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_BITS</code></span></dt><dd><p>
1801                           </p><p>
1802                         <em class="parameter"><code>params</code></em> returns one value,
1803                         the number of bitplanes in the stencil buffer.
1804                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_CLEAR_VALUE</code></span></dt><dd><p>
1805                           </p><p>
1806                         <em class="parameter"><code>params</code></em> returns one value,
1807                         the index to which the stencil bitplanes are cleared. The initial value is
1808                         0.
1809                         See <a class="citerefentry" href="glClearStencil.xml"><span class="citerefentry"><span class="refentrytitle">glClearStencil</span></span></a>.
1810                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_FAIL</code></span></dt><dd><p>
1811                           </p><p>
1812                         <em class="parameter"><code>params</code></em> returns one value,
1813                         a symbolic constant indicating what action is taken when the stencil
1814                         test fails. The initial value is <code class="constant">GL_KEEP</code>.
1815                         See <a class="citerefentry" href="glStencilOp.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOp</span></span></a>.
1816                         If the GL version is 2.0 or greater, this stencil state only affects non-polygons
1817                         and front-facing polygons.  Back-facing polygons use separate stencil state.
1818                         See <a class="citerefentry" href="glStencilOpSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOpSeparate</span></span></a>.
1819                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_FUNC</code></span></dt><dd><p>
1820                           </p><p>
1821                         <em class="parameter"><code>params</code></em> returns one value,
1822                         a symbolic constant indicating what function is used to compare the
1823                         stencil reference value with the stencil buffer value. The initial value
1824                         is <code class="constant">GL_ALWAYS</code>.
1825                         See <a class="citerefentry" href="glStencilFunc.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFunc</span></span></a>.
1826                         If the GL version is 2.0 or greater, this stencil state only affects non-polygons
1827                         and front-facing polygons.  Back-facing polygons use separate stencil state.
1828                         See <a class="citerefentry" href="glStencilFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFuncSeparate</span></span></a>.
1829                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_PASS_DEPTH_FAIL</code></span></dt><dd><p>
1830                           </p><p>
1831                         <em class="parameter"><code>params</code></em> returns one value,
1832                         a symbolic constant indicating what action is taken when the stencil
1833                         test passes,
1834                         but the depth test fails. The initial value is <code class="constant">GL_KEEP</code>.
1835                         See <a class="citerefentry" href="glStencilOp.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOp</span></span></a>.
1836                         If the GL version is 2.0 or greater, this stencil state only affects non-polygons
1837                         and front-facing polygons.  Back-facing polygons use separate stencil state.
1838                         See <a class="citerefentry" href="glStencilOpSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOpSeparate</span></span></a>.
1839                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_PASS_DEPTH_PASS</code></span></dt><dd><p>
1840                           </p><p>
1841                         <em class="parameter"><code>params</code></em> returns one value,
1842                         a symbolic constant indicating what action is taken when the stencil
1843                         test passes and the depth test passes. The initial value is <code class="constant">GL_KEEP</code>.
1844                         See <a class="citerefentry" href="glStencilOp.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOp</span></span></a>.
1845                         If the GL version is 2.0 or greater, this stencil state only affects non-polygons
1846                         and front-facing polygons.  Back-facing polygons use separate stencil state.
1847                         See <a class="citerefentry" href="glStencilOpSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilOpSeparate</span></span></a>.
1848                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_REF</code></span></dt><dd><p>
1849                           </p><p>
1850                         <em class="parameter"><code>params</code></em> returns one value,
1851                         the reference value that is compared with the contents of the stencil
1852                         buffer. The initial value is 0.
1853                         See <a class="citerefentry" href="glStencilFunc.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFunc</span></span></a>.
1854                         If the GL version is 2.0 or greater, this stencil state only affects non-polygons
1855                         and front-facing polygons.  Back-facing polygons use separate stencil state.
1856                         See <a class="citerefentry" href="glStencilFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFuncSeparate</span></span></a>.
1857                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_TEST</code></span></dt><dd><p>
1858                           </p><p>
1859                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether stencil testing
1860                         of fragments is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1861                         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>.
1862                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_VALUE_MASK</code></span></dt><dd><p>
1863                           </p><p>
1864                         <em class="parameter"><code>params</code></em> returns one value,
1865                         the mask that is used to mask both the stencil reference value and the
1866                         stencil buffer value before they are compared. The initial value is all 1's.
1867                         See <a class="citerefentry" href="glStencilFunc.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFunc</span></span></a>.
1868                         If the GL version is 2.0 or greater, this stencil state only affects non-polygons
1869                         and front-facing polygons.  Back-facing polygons use separate stencil state.
1870                         See <a class="citerefentry" href="glStencilFuncSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilFuncSeparate</span></span></a>.
1871                     </p></dd><dt><span class="term"><code class="constant">GL_STENCIL_WRITEMASK</code></span></dt><dd><p>
1872                           </p><p>
1873                         <em class="parameter"><code>params</code></em> returns one value,
1874                         the mask that controls writing of the stencil bitplanes. The initial value
1875                         is all 1's.
1876                         See <a class="citerefentry" href="glStencilMask.xml"><span class="citerefentry"><span class="refentrytitle">glStencilMask</span></span></a>.
1877                         If the GL version is 2.0 or greater, this stencil state only affects non-polygons
1878                         and front-facing polygons.  Back-facing polygons use separate stencil state.
1879                         See <a class="citerefentry" href="glStencilMaskSeparate.xml"><span class="citerefentry"><span class="refentrytitle">glStencilMaskSeparate</span></span></a>.
1880                     </p></dd><dt><span class="term"><code class="constant">GL_STEREO</code></span></dt><dd><p>
1881                           </p><p>
1882                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether stereo buffers
1883                         (left and right) are supported.
1884                     </p></dd><dt><span class="term"><code class="constant">GL_SUBPIXEL_BITS</code></span></dt><dd><p>
1885                           </p><p>
1886                         <em class="parameter"><code>params</code></em> returns one value,
1887                         an estimate of the number of bits of subpixel resolution that are used to
1888                         position rasterized geometry in window coordinates. The value must be at least 4.
1889                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_1D</code></span></dt><dd><p>
1890                           </p><p>
1891                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether 1D texture
1892                         mapping is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1893                         See <a class="citerefentry" href="glTexImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage1D</span></span></a>.
1894                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_BINDING_1D</code></span></dt><dd><p>
1895                           </p><p>
1896                         <em class="parameter"><code>params</code></em> returns a single value, the name of the texture
1897                         currently bound to the target <code class="constant">GL_TEXTURE_1D</code>. The initial value is 0.
1898                         See <a class="citerefentry" href="glBindTexture.xml"><span class="citerefentry"><span class="refentrytitle">glBindTexture</span></span></a>.
1899                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_2D</code></span></dt><dd><p>
1900                           </p><p>
1901                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether 2D texture
1902                         mapping is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1903                         See <a class="citerefentry" href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>.
1904                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_BINDING_2D</code></span></dt><dd><p>
1905                           </p><p>
1906                         <em class="parameter"><code>params</code></em> returns a single value, the name of the texture
1907                         currently bound to the target <code class="constant">GL_TEXTURE_2D</code>. The initial value is 0.
1908                         See <a class="citerefentry" href="glBindTexture.xml"><span class="citerefentry"><span class="refentrytitle">glBindTexture</span></span></a>.
1909                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_3D</code></span></dt><dd><p>
1910                           </p><p>
1911                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether 3D texture
1912                         mapping is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1913                         See <a class="citerefentry" href="glTexImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage3D</span></span></a>.
1914                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_BINDING_3D</code></span></dt><dd><p>
1915                           </p><p>
1916                         <em class="parameter"><code>params</code></em> returns a single value, the name of the texture
1917                         currently bound to the target <code class="constant">GL_TEXTURE_3D</code>. The initial value is 0.
1918                         See <a class="citerefentry" href="glBindTexture.xml"><span class="citerefentry"><span class="refentrytitle">glBindTexture</span></span></a>.
1919                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_BINDING_CUBE_MAP</code></span></dt><dd><p>
1920                           </p><p>
1921                         <em class="parameter"><code>params</code></em> returns a single value, the name of the texture
1922                         currently bound to the target <code class="constant">GL_TEXTURE_CUBE_MAP</code>. The initial value is 0.
1923                         See <a class="citerefentry" href="glBindTexture.xml"><span class="citerefentry"><span class="refentrytitle">glBindTexture</span></span></a>.
1924                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_COMPRESSION_HINT</code></span></dt><dd><p>
1925                           </p><p>
1926                         <em class="parameter"><code>params</code></em> returns a single value indicating the mode of the texture
1927                         compression hint.  The initial value is <code class="constant">GL_DONT_CARE</code>.
1928                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_COORD_ARRAY</code></span></dt><dd><p>
1929                           </p><p>
1930                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the texture
1931                         coordinate array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1932                         See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
1933                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
1934                           </p><p>
1935                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
1936                         associated with the texture coordinate array. This buffer object would have been bound to the
1937                         target <code class="constant">GL_ARRAY_BUFFER</code> at the time of the most recent call to
1938                         <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
1939                         If no buffer object was bound to this target, 0 is returned.  The initial value is 0.
1940                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
1941                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_COORD_ARRAY_SIZE</code></span></dt><dd><p>
1942                           </p><p>
1943                         <em class="parameter"><code>params</code></em> returns one value,
1944                         the number of coordinates per element in the texture coordinate
1945                         array. The initial value is 4.
1946                         See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
1947                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_COORD_ARRAY_STRIDE</code></span></dt><dd><p>
1948                           </p><p>
1949                         <em class="parameter"><code>params</code></em> returns one value,
1950                         the byte offset between consecutive elements in the texture coordinate
1951                         array. The initial value is 0.
1952                         See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
1953                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_COORD_ARRAY_TYPE</code></span></dt><dd><p>
1954                           </p><p>
1955                         <em class="parameter"><code>params</code></em> returns one value,
1956                         the data type of the coordinates in the texture coordinate
1957                         array. The initial value is <code class="constant">GL_FLOAT</code>.
1958                         See <a class="citerefentry" href="glTexCoordPointer.xml"><span class="citerefentry"><span class="refentrytitle">glTexCoordPointer</span></span></a>.
1959                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_CUBE_MAP</code></span></dt><dd><p>
1960                           </p><p>
1961                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether cube-mapped texture
1962                         mapping is enabled.  The initial value is <code class="constant">GL_FALSE</code>.
1963                         See <a class="citerefentry" href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>.
1964                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_GEN_Q</code></span></dt><dd><p>
1965                           </p><p>
1966                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether automatic generation
1967                         of the <span class="emphasis"><em>q</em></span> texture coordinate is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1968                         See <a class="citerefentry" href="glTexGen.xml"><span class="citerefentry"><span class="refentrytitle">glTexGen</span></span></a>.
1969                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_GEN_R</code></span></dt><dd><p>
1970                           </p><p>
1971                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether automatic generation
1972                         of the <span class="emphasis"><em>r</em></span> texture coordinate is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1973                         See <a class="citerefentry" href="glTexGen.xml"><span class="citerefentry"><span class="refentrytitle">glTexGen</span></span></a>.
1974                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_GEN_S</code></span></dt><dd><p>
1975                           </p><p>
1976                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether automatic generation
1977                         of the <span class="emphasis"><em>S</em></span> texture coordinate is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1978                         See <a class="citerefentry" href="glTexGen.xml"><span class="citerefentry"><span class="refentrytitle">glTexGen</span></span></a>.
1979                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_GEN_T</code></span></dt><dd><p>
1980                           </p><p>
1981                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether automatic generation
1982                         of the T texture coordinate is enabled. The initial value is <code class="constant">GL_FALSE</code>.
1983                         See <a class="citerefentry" href="glTexGen.xml"><span class="citerefentry"><span class="refentrytitle">glTexGen</span></span></a>.
1984                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_MATRIX</code></span></dt><dd><p>
1985                           </p><p>
1986                         <em class="parameter"><code>params</code></em> returns sixteen values:
1987                         the texture matrix on the top of the texture matrix stack. Initially this
1988                         matrix is the identity matrix.
1989                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1990                     </p></dd><dt><span class="term"><code class="constant">GL_TEXTURE_STACK_DEPTH</code></span></dt><dd><p>
1991                           </p><p>
1992                         <em class="parameter"><code>params</code></em> returns one value,
1993                         the number of matrices on the texture matrix stack.
1994                         The initial value is 1.
1995                         See <a class="citerefentry" href="glPushMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glPushMatrix</span></span></a>.
1996                     </p></dd><dt><span class="term"><code class="constant">GL_TRANSPOSE_COLOR_MATRIX</code></span></dt><dd><p>
1997                           </p><p>
1998                         <em class="parameter"><code>params</code></em> returns 16 values, the elements of the color matrix in row-major
1999                         order.
2000                         See <a class="citerefentry" href="glLoadTransposeMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glLoadTransposeMatrix</span></span></a>.
2001                     </p></dd><dt><span class="term"><code class="constant">GL_TRANSPOSE_MODELVIEW_MATRIX</code></span></dt><dd><p>
2002                           </p><p>
2003                         <em class="parameter"><code>params</code></em> returns 16 values, the elements of the modelview matrix in row-major
2004                         order.
2005                         See <a class="citerefentry" href="glLoadTransposeMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glLoadTransposeMatrix</span></span></a>.
2006                     </p></dd><dt><span class="term"><code class="constant">GL_TRANSPOSE_PROJECTION_MATRIX</code></span></dt><dd><p>
2007                           </p><p>
2008                         <em class="parameter"><code>params</code></em> returns 16 values, the elements of the projection matrix in row-major
2009                         order.
2010                         See <a class="citerefentry" href="glLoadTransposeMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glLoadTransposeMatrix</span></span></a>.
2011                     </p></dd><dt><span class="term"><code class="constant">GL_TRANSPOSE_TEXTURE_MATRIX</code></span></dt><dd><p>
2012                           </p><p>
2013                         <em class="parameter"><code>params</code></em> returns 16 values, the elements of the texture matrix in row-major
2014                         order.
2015                         See <a class="citerefentry" href="glLoadTransposeMatrix.xml"><span class="citerefentry"><span class="refentrytitle">glLoadTransposeMatrix</span></span></a>.
2016                     </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_ALIGNMENT</code></span></dt><dd><p>
2017                           </p><p>
2018                         <em class="parameter"><code>params</code></em> returns one value,
2019                         the byte alignment used for reading pixel data from memory. The initial
2020                         value is 4.
2021                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
2022                     </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_IMAGE_HEIGHT</code></span></dt><dd><p>
2023                           </p><p>
2024                         <em class="parameter"><code>params</code></em> returns one value,
2025                         the image height used for reading pixel data from memory.  The initial
2026                         is 0.
2027                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
2028                     </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_LSB_FIRST</code></span></dt><dd><p>
2029                           </p><p>
2030                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether single-bit
2031                         pixels being read from memory are read first from the least significant
2032                         bit of each unsigned byte. The initial value is <code class="constant">GL_FALSE</code>.
2033                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
2034                     </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_ROW_LENGTH</code></span></dt><dd><p>
2035                           </p><p>
2036                         <em class="parameter"><code>params</code></em> returns one value,
2037                         the row length used for reading pixel data from memory. The initial value
2038                         is 0.
2039                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
2040                     </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_SKIP_IMAGES</code></span></dt><dd><p>
2041                           </p><p>
2042                         <em class="parameter"><code>params</code></em> returns one value,
2043                         the number of pixel images skipped before the first pixel is read
2044                         from memory. The initial value is 0.
2045                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
2046                     </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_SKIP_PIXELS</code></span></dt><dd><p>
2047                           </p><p>
2048                         <em class="parameter"><code>params</code></em> returns one value,
2049                         the number of pixel locations skipped before the first pixel is read
2050                         from memory. The initial value is 0.
2051                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
2052                     </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_SKIP_ROWS</code></span></dt><dd><p>
2053                           </p><p>
2054                         <em class="parameter"><code>params</code></em> returns one value,
2055                         the number of rows of pixel locations skipped before the first pixel is read
2056                         from memory. The initial value is 0.
2057                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
2058                     </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_SWAP_BYTES</code></span></dt><dd><p>
2059                           </p><p>
2060                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the bytes of
2061                         two-byte and four-byte pixel indices and components are swapped after being
2062                         read from memory. The initial value is <code class="constant">GL_FALSE</code>.
2063                         See <a class="citerefentry" href="glPixelStore.xml"><span class="citerefentry"><span class="refentrytitle">glPixelStore</span></span></a>.
2064                     </p></dd><dt><span class="term"><code class="constant">GL_VERTEX_ARRAY</code></span></dt><dd><p>
2065                           </p><p>
2066                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether the vertex
2067                         array is enabled. The initial value is <code class="constant">GL_FALSE</code>.
2068                         See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
2069                     </p></dd><dt><span class="term"><code class="constant">GL_VERTEX_ARRAY_BUFFER_BINDING</code></span></dt><dd><p>
2070                           </p><p>
2071                         <em class="parameter"><code>params</code></em> returns a single value, the name of the buffer object
2072                         associated with the vertex array. This buffer object would have been bound to the
2073                         target <code class="constant">GL_ARRAY_BUFFER</code> at the time of the most recent call to
2074                         <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
2075                         If no buffer object was bound to this target, 0 is returned.  The initial value is 0.
2076                         See <a class="citerefentry" href="glBindBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glBindBuffer</span></span></a>.
2077                     </p></dd><dt><span class="term"><code class="constant">GL_VERTEX_ARRAY_SIZE</code></span></dt><dd><p>
2078                           </p><p>
2079                         <em class="parameter"><code>params</code></em> returns one value,
2080                         the number of coordinates per vertex in the vertex array. The initial
2081                         value is 4.
2082                         See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
2083                     </p></dd><dt><span class="term"><code class="constant">GL_VERTEX_ARRAY_STRIDE</code></span></dt><dd><p>
2084                           </p><p>
2085                         <em class="parameter"><code>params</code></em> returns one value,
2086                         the byte offset between consecutive vertices in the vertex
2087                         array. The initial value is 0.
2088                         See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
2089                     </p></dd><dt><span class="term"><code class="constant">GL_VERTEX_ARRAY_TYPE</code></span></dt><dd><p>
2090                           </p><p>
2091                         <em class="parameter"><code>params</code></em> returns one value,
2092                         the data type of each coordinate in the vertex array. The initial value is
2093                         <code class="constant">GL_FLOAT</code>.
2094                         See <a class="citerefentry" href="glVertexPointer.xml"><span class="citerefentry"><span class="refentrytitle">glVertexPointer</span></span></a>.
2095                     </p></dd><dt><span class="term"><code class="constant">GL_VERTEX_PROGRAM_POINT_SIZE</code></span></dt><dd><p>
2096                           </p><p>
2097                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether vertex
2098                         program point size mode is enabled. If enabled, and a vertex shader is active, then the
2099                         point size is taken from the shader built-in <code class="code">gl_PointSize</code>. If disabled,
2100                         and a vertex shader is active, then the point size is taken from the point state as specified
2101                         by <a class="citerefentry" href="glPointSize.xml"><span class="citerefentry"><span class="refentrytitle">glPointSize</span></span></a>.
2102                         The initial value is <code class="constant">GL_FALSE</code>.
2103                     </p></dd><dt><span class="term"><code class="constant">GL_VERTEX_PROGRAM_TWO_SIDE</code></span></dt><dd><p>
2104                           </p><p>
2105                         <em class="parameter"><code>params</code></em> returns a single boolean value indicating whether vertex
2106                         program two-sided color mode is enabled. If enabled, and a vertex shader is active, then the
2107                         GL chooses the back color output for back-facing polygons, and the front color output for
2108                         non-polygons and front-facing polygons. If disabled, and a vertex shader is active, then the
2109                         front color output is always selected. The initial value is <code class="constant">GL_FALSE</code>.
2110                     </p></dd><dt><span class="term"><code class="constant">GL_VIEWPORT</code></span></dt><dd><p>
2111                           </p><p>
2112                         <em class="parameter"><code>params</code></em> returns four values:
2113                         the
2114                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">x</mml:mi></mml:math>
2115                         and
2116                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">y</mml:mi></mml:math>
2117                         window coordinates of the viewport,
2118                         followed by its width and height.
2119                         Initially the
2120                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">x</mml:mi></mml:math>
2121                         and
2122                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">y</mml:mi></mml:math>
2123                         window coordinates are both set to 0,
2124                         and the width and height are set to the width and height of the window into
2125                         which the GL will do its rendering.
2126                         See <a class="citerefentry" href="glViewport.xml"><span class="citerefentry"><span class="refentrytitle">glViewport</span></span></a>.
2127                     </p></dd><dt><span class="term"><code class="constant">GL_ZOOM_X</code></span></dt><dd><p>
2128                           </p><p>
2129                         <em class="parameter"><code>params</code></em> returns one value,
2130                         the
2131                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">x</mml:mi></mml:math>
2132                         pixel zoom factor. The initial value is 1.
2133                         See <a class="citerefentry" href="glPixelZoom.xml"><span class="citerefentry"><span class="refentrytitle">glPixelZoom</span></span></a>.
2134                     </p></dd><dt><span class="term"><code class="constant">GL_ZOOM_Y</code></span></dt><dd><p>
2135                           </p><p>
2136                         <em class="parameter"><code>params</code></em> returns one value,
2137                         the
2138                         <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" overflow="scroll"><mml:mi mathvariant="italic">y</mml:mi></mml:math>
2139                         pixel zoom factor. The initial value is 1.
2140                         See <a class="citerefentry" href="glPixelZoom.xml"><span class="citerefentry"><span class="refentrytitle">glPixelZoom</span></span></a>.
2141                     </p></dd></dl></div><p>
2142             Many of the boolean parameters can also be queried more easily using
2143             <a class="citerefentry" href="glIsEnabled.xml"><span class="citerefentry"><span class="refentrytitle">glIsEnabled</span></span></a>.
2144         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>
2145             <code class="constant">GL_COLOR_LOGIC_OP</code>,
2146             <code class="constant">GL_COLOR_ARRAY</code>,
2147             <code class="constant">GL_COLOR_ARRAY_SIZE</code>,
2148             <code class="constant">GL_COLOR_ARRAY_STRIDE</code>,
2149             <code class="constant">GL_COLOR_ARRAY_TYPE</code>,
2150             <code class="constant">GL_EDGE_FLAG_ARRAY</code>,
2151             <code class="constant">GL_EDGE_FLAG_ARRAY_STRIDE</code>,
2152             <code class="constant">GL_INDEX_ARRAY</code>,
2153             <code class="constant">GL_INDEX_ARRAY_STRIDE</code>,
2154             <code class="constant">GL_INDEX_ARRAY_TYPE</code>,
2155             <code class="constant">GL_INDEX_LOGIC_OP</code>,
2156             <code class="constant">GL_NORMAL_ARRAY</code>,
2157             <code class="constant">GL_NORMAL_ARRAY_STRIDE</code>,
2158             <code class="constant">GL_NORMAL_ARRAY_TYPE</code>,
2159             <code class="constant">GL_POLYGON_OFFSET_UNITS</code>,
2160             <code class="constant">GL_POLYGON_OFFSET_FACTOR</code>,
2161             <code class="constant">GL_POLYGON_OFFSET_FILL</code>,
2162             <code class="constant">GL_POLYGON_OFFSET_LINE</code>,
2163             <code class="constant">GL_POLYGON_OFFSET_POINT</code>,
2164             <code class="constant">GL_TEXTURE_COORD_ARRAY</code>,
2165             <code class="constant">GL_TEXTURE_COORD_ARRAY_SIZE</code>,
2166             <code class="constant">GL_TEXTURE_COORD_ARRAY_STRIDE</code>,
2167             <code class="constant">GL_TEXTURE_COORD_ARRAY_TYPE</code>,
2168             <code class="constant">GL_VERTEX_ARRAY</code>,
2169             <code class="constant">GL_VERTEX_ARRAY_SIZE</code>,
2170             <code class="constant">GL_VERTEX_ARRAY_STRIDE</code>, and
2171             <code class="constant">GL_VERTEX_ARRAY_TYPE</code>
2172             are available only if the GL version is 1.1 or greater.
2173         </p><p>
2174             <code class="constant">GL_ALIASED_POINT_SIZE_RANGE</code>,
2175             <code class="constant">GL_FEEDBACK_BUFFER_SIZE</code>,
2176             <code class="constant">GL_FEEDBACK_BUFFER_TYPE</code>,
2177             <code class="constant">GL_LIGHT_MODEL_AMBIENT</code>,
2178             <code class="constant">GL_LIGHT_MODEL_COLOR_CONTROL</code>,
2179             <code class="constant">GL_MAX_3D_TEXTURE_SIZE</code>,
2180             <code class="constant">GL_MAX_ELEMENTS_INDICES</code>,
2181             <code class="constant">GL_MAX_ELEMENTS_VERTICES</code>,
2182             <code class="constant">GL_PACK_IMAGE_HEIGHT</code>,
2183             <code class="constant">GL_PACK_SKIP_IMAGES</code>,
2184             <code class="constant">GL_RESCALE_NORMAL</code>,
2185             <code class="constant">GL_SELECTION_BUFFER_SIZE</code>,
2186             <code class="constant">GL_SMOOTH_LINE_WIDTH_GRANULARITY</code>,
2187             <code class="constant">GL_SMOOTH_LINE_WIDTH_RANGE</code>,
2188             <code class="constant">GL_SMOOTH_POINT_SIZE_GRANULARITY</code>,
2189             <code class="constant">GL_SMOOTH_POINT_SIZE_RANGE</code>,
2190             <code class="constant">GL_TEXTURE_3D</code>,
2191             <code class="constant">GL_TEXTURE_BINDING_3D</code>,
2192             <code class="constant">GL_UNPACK_IMAGE_HEIGHT</code>, and
2193             <code class="constant">GL_UNPACK_SKIP_IMAGES</code>
2194             are available only if the GL version is 1.2 or greater.
2195         </p><p>
2196             <code class="constant">GL_COMPRESSED_TEXTURE_FORMATS</code>,
2197             <code class="constant">GL_NUM_COMPRESSED_TEXTURE_FORMATS</code>,
2198             <code class="constant">GL_TEXTURE_BINDING_CUBE_MAP</code>, and
2199             <code class="constant">GL_TEXTURE_COMPRESSION_HINT</code>
2200             are available only if the GL version is 1.3 or greater.
2201         </p><p>
2202             <code class="constant">GL_BLEND_DST_ALPHA</code>,
2203             <code class="constant">GL_BLEND_DST_RGB</code>,
2204             <code class="constant">GL_BLEND_SRC_ALPHA</code>,
2205             <code class="constant">GL_BLEND_SRC_RGB</code>,
2206             <code class="constant">GL_CURRENT_FOG_COORD</code>,
2207             <code class="constant">GL_CURRENT_SECONDARY_COLOR</code>,
2208             <code class="constant">GL_FOG_COORD_ARRAY_STRIDE</code>,
2209             <code class="constant">GL_FOG_COORD_ARRAY_TYPE</code>,
2210             <code class="constant">GL_FOG_COORD_SRC</code>,
2211             <code class="constant">GL_MAX_TEXTURE_LOD_BIAS</code>,
2212             <code class="constant">GL_POINT_SIZE_MIN</code>,
2213             <code class="constant">GL_POINT_SIZE_MAX</code>,
2214             <code class="constant">GL_POINT_FADE_THRESHOLD_SIZE</code>,
2215             <code class="constant">GL_POINT_DISTANCE_ATTENUATION</code>,
2216             <code class="constant">GL_SECONDARY_COLOR_ARRAY_SIZE</code>,
2217             <code class="constant">GL_SECONDARY_COLOR_ARRAY_STRIDE</code>, and
2218             <code class="constant">GL_SECONDARY_COLOR_ARRAY_TYPE</code>
2219             are available only if the GL version is 1.4 or greater.
2220         </p><p>
2221             <code class="constant">GL_ARRAY_BUFFER_BINDING</code>,
2222             <code class="constant">GL_COLOR_ARRAY_BUFFER_BINDING</code>,
2223             <code class="constant">GL_EDGE_FLAG_ARRAY_BUFFER_BINDING</code>,
2224             <code class="constant">GL_ELEMENT_ARRAY_BUFFER_BINDING</code>,
2225             <code class="constant">GL_FOG_COORD_ARRAY_BUFFER_BINDING</code>,
2226             <code class="constant">GL_INDEX_ARRAY_BUFFER_BINDING</code>,
2227             <code class="constant">GL_NORMAL_ARRAY_BUFFER_BINDING</code>,
2228             <code class="constant">GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING</code>,
2229             <code class="constant">GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</code>, and
2230             <code class="constant">GL_VERTEX_ARRAY_BUFFER_BINDING</code>
2231             are available only if the GL version is 1.5 or greater.
2232         </p><p>
2233             <code class="constant">GL_BLEND_EQUATION_ALPHA</code>,
2234             <code class="constant">GL_BLEND_EQUATION_RGB</code>,
2235             <code class="constant">GL_DRAW_BUFFER</code><span class="emphasis"><em>i</em></span>,
2236             <code class="constant">GL_FRAGMENT_SHADER_DERIVATIVE_HINT</code>,
2237             <code class="constant">GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS</code>,
2238             <code class="constant">GL_MAX_DRAW_BUFFERS</code>,
2239             <code class="constant">GL_MAX_FRAGMENT_UNIFORM_COMPONENTS</code>,
2240             <code class="constant">GL_MAX_TEXTURE_COORDS</code>,
2241             <code class="constant">GL_MAX_TEXTURE_IMAGE_UNITS</code>,
2242             <code class="constant">GL_MAX_VARYING_FLOATS</code>,
2243             <code class="constant">GL_MAX_VERTEX_ATTRIBS</code>,
2244             <code class="constant">GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS</code>,
2245             <code class="constant">GL_MAX_VERTEX_UNIFORM_COMPONENTS</code>,
2246             <code class="constant">GL_POINT_SPRITE</code>,
2247             <code class="constant">GL_STENCIL_BACK_FAIL</code>,
2248             <code class="constant">GL_STENCIL_BACK_FUNC</code>,
2249             <code class="constant">GL_STENCIL_BACK_PASS_DEPTH_FAIL</code>,
2250             <code class="constant">GL_STENCIL_BACK_PASS_DEPTH_PASS</code>,
2251             <code class="constant">GL_STENCIL_BACK_REF</code>,
2252             <code class="constant">GL_STENCIL_BACK_VALUE_MASK</code>,
2253             <code class="constant">GL_STENCIL_BACK_WRITEMASK</code>,
2254             <code class="constant">GL_VERTEX_PROGRAM_POINT_SIZE</code>, and
2255             <code class="constant">GL_VERTEX_PROGRAM_TWO_SIDE</code>
2256             are available only if the GL version is 2.0 or greater.
2257         </p><p>
2258             <code class="constant">GL_CURRENT_RASTER_SECONDARY_COLOR</code>,
2259             <code class="constant">GL_PIXEL_PACK_BUFFER_BINDING</code> and
2260             <code class="constant">GL_PIXEL_UNPACK_BUFFER_BINDING</code>
2261             are available only if the GL version is 2.1 or greater.
2262         </p><p>
2263             <code class="constant">GL_LINE_WIDTH_GRANULARITY</code> was deprecated in GL version 1.2.  Its
2264             functionality was replaced by <code class="constant">GL_SMOOTH_LINE_WIDTH_GRANULARITY</code>.
2265         </p><p>
2266             <code class="constant">GL_LINE_WIDTH_RANGE</code> was deprecated in GL version 1.2.  Its
2267             functionality was replaced by <code class="constant">GL_SMOOTH_LINE_WIDTH_RANGE</code>.
2268         </p><p>
2269             <code class="constant">GL_POINT_SIZE_GRANULARITY</code> was deprecated in GL version 1.2.  Its
2270             functionality was replaced by <code class="constant">GL_SMOOTH_POINT_SIZE_GRANULARITY</code>.
2271         </p><p>
2272             <code class="constant">GL_POINT_SIZE_RANGE</code> was deprecated in GL version 1.2.  Its
2273             functionality was replaced by <code class="constant">GL_SMOOTH_POINT_SIZE_RANGE</code>.
2274         </p><p>
2275             <code class="constant">GL_BLEND_EQUATION</code> was deprecated in GL version 2.0.  Its
2276             functionality was replaced by <code class="constant">GL_BLEND_EQUATION_RGB</code> and
2277             <code class="constant">GL_BLEND_EQUATION_ALPHA</code>.
2278         </p><p>
2279             <code class="constant">GL_COLOR_MATRIX</code>,
2280             <code class="constant">GL_COLOR_MATRIX_STACK_DEPTH</code>,
2281             <code class="constant">GL_COLOR_TABLE</code>,
2282             <code class="constant">GL_CONVOLUTION_1D</code>,
2283             <code class="constant">GL_CONVOLUTION_2D</code>,
2284             <code class="constant">GL_HISTOGRAM</code>,
2285             <code class="constant">GL_MAX_COLOR_MATRIX_STACK_DEPTH</code>,
2286             <code class="constant">GL_MINMAX</code>,
2287             <code class="constant">GL_POST_COLOR_MATRIX_COLOR_TABLE</code>,
2288             <code class="constant">GL_POST_COLOR_MATRIX_RED_BIAS</code>,
2289             <code class="constant">GL_POST_COLOR_MATRIX_GREEN_BIAS</code>,
2290             <code class="constant">GL_POST_COLOR_MATRIX_BLUE_BIAS</code>,
2291             <code class="constant">GL_POST_COLOR_MATRIX_ALPHA_BIAS</code>,
2292             <code class="constant">GL_POST_COLOR_MATRIX_RED_SCALE</code>,
2293             <code class="constant">GL_POST_COLOR_MATRIX_GREEN_SCALE</code>,
2294             <code class="constant">GL_POST_COLOR_MATRIX_BLUE_SCALE</code>,
2295             <code class="constant">GL_POST_COLOR_MATRIX_ALPHA_SCALE</code>,
2296             <code class="constant">GL_POST_CONVOLUTION_COLOR_TABLE</code>,
2297             <code class="constant">GL_POST_CONVOLUTION_RED_BIAS</code>,
2298             <code class="constant">GL_POST_CONVOLUTION_GREEN_BIAS</code>,
2299             <code class="constant">GL_POST_CONVOLUTION_BLUE_BIAS</code>,
2300             <code class="constant">GL_POST_CONVOLUTION_ALPHA_BIAS</code>,
2301             <code class="constant">GL_POST_CONVOLUTION_RED_SCALE</code>,
2302             <code class="constant">GL_POST_CONVOLUTION_GREEN_SCALE</code>,
2303             <code class="constant">GL_POST_CONVOLUTION_BLUE_SCALE</code>,
2304             <code class="constant">GL_POST_CONVOLUTION_ALPHA_SCALE</code>, and
2305             <code class="constant">GL_SEPARABLE_2D</code>
2306             are available only if <code class="code">ARB_imaging</code> is returned from <code class="function">glGet</code>
2307             when called with the argument <code class="constant">GL_EXTENSIONS</code>.
2308         </p><p>
2309             When the <code class="code">ARB_multitexture</code> extension is supported, or the GL version
2310             is 1.3 or greater, the following
2311             parameters return the associated value for the active texture unit:
2312             <code class="constant">GL_CURRENT_RASTER_TEXTURE_COORDS</code>,
2313             <code class="constant">GL_TEXTURE_1D</code>, <code class="constant">GL_TEXTURE_BINDING_1D</code>,
2314             <code class="constant">GL_TEXTURE_2D</code>, <code class="constant">GL_TEXTURE_BINDING_2D</code>,
2315             <code class="constant">GL_TEXTURE_3D</code>, <code class="constant">GL_TEXTURE_BINDING_3D</code>,
2316             <code class="constant">GL_TEXTURE_GEN_S</code>,
2317             <code class="constant">GL_TEXTURE_GEN_T</code>,
2318             <code class="constant">GL_TEXTURE_GEN_R</code>,
2319             <code class="constant">GL_TEXTURE_GEN_Q</code>,
2320             <code class="constant">GL_TEXTURE_MATRIX</code>, and
2321             <code class="constant">GL_TEXTURE_STACK_DEPTH</code>.
2322             Likewise, the following parameters return the associated value for the
2323             active client texture unit:
2324             <code class="constant">GL_TEXTURE_COORD_ARRAY</code>,
2325             <code class="constant">GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</code>,
2326             <code class="constant">GL_TEXTURE_COORD_ARRAY_SIZE</code>,
2327             <code class="constant">GL_TEXTURE_COORD_ARRAY_STRIDE</code>,
2328             <code class="constant">GL_TEXTURE_COORD_ARRAY_TYPE</code>.
2329         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p>
2330             <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>pname</code></em> is not an accepted value.
2331         </p><p>
2332             <code class="constant">GL_INVALID_OPERATION</code> is generated if <code class="function">glGet</code>
2333             is executed between the execution of <a class="citerefentry" href="glBegin.xml"><span class="citerefentry"><span class="refentrytitle">glBegin</span></span></a>
2334             and the corresponding execution of <a class="citerefentry" href="glEnd.xml"><span class="citerefentry"><span class="refentrytitle">glEnd</span></span></a>.
2335         </p><p>
2336         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
2337             <a class="citerefentry" href="glGetActiveAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveAttrib</span></span></a>,
2338             <a class="citerefentry" href="glGetActiveUniform.xml"><span class="citerefentry"><span class="refentrytitle">glGetActiveUniform</span></span></a>,
2339             <a class="citerefentry" href="glGetAttachedShaders.xml"><span class="citerefentry"><span class="refentrytitle">glGetAttachedShaders</span></span></a>,
2340             <a class="citerefentry" href="glGetAttribLocation.xml"><span class="citerefentry"><span class="refentrytitle">glGetAttribLocation</span></span></a>,
2341             <a class="citerefentry" href="glGetBufferParameteriv.xml"><span class="citerefentry"><span class="refentrytitle">glGetBufferParameteriv</span></span></a>,
2342             <a class="citerefentry" href="glGetBufferPointerv.xml"><span class="citerefentry"><span class="refentrytitle">glGetBufferPointerv</span></span></a>,
2343             <a class="citerefentry" href="glGetBufferSubData.xml"><span class="citerefentry"><span class="refentrytitle">glGetBufferSubData</span></span></a>,
2344             <a class="citerefentry" href="glGetClipPlane.xml"><span class="citerefentry"><span class="refentrytitle">glGetClipPlane</span></span></a>,
2345             <a class="citerefentry" href="glGetColorTable.xml"><span class="citerefentry"><span class="refentrytitle">glGetColorTable</span></span></a>,
2346             <a class="citerefentry" href="glGetColorTableParameter.xml"><span class="citerefentry"><span class="refentrytitle">glGetColorTableParameter</span></span></a>,
2347             <a class="citerefentry" href="glGetCompressedTexImage.xml"><span class="citerefentry"><span class="refentrytitle">glGetCompressedTexImage</span></span></a>,
2348             <a class="citerefentry" href="glGetConvolutionFilter.xml"><span class="citerefentry"><span class="refentrytitle">glGetConvolutionFilter</span></span></a>,
2349             <a class="citerefentry" href="glGetConvolutionParameter.xml"><span class="citerefentry"><span class="refentrytitle">glGetConvolutionParameter</span></span></a>,
2350             <a class="citerefentry" href="glGetError.xml"><span class="citerefentry"><span class="refentrytitle">glGetError</span></span></a>,
2351             <a class="citerefentry" href="glGetHistogram.xml"><span class="citerefentry"><span class="refentrytitle">glGetHistogram</span></span></a>,
2352             <a class="citerefentry" href="glGetHistogramParameter.xml"><span class="citerefentry"><span class="refentrytitle">glGetHistogramParameter</span></span></a>,
2353             <a class="citerefentry" href="glGetLight.xml"><span class="citerefentry"><span class="refentrytitle">glGetLight</span></span></a>,
2354             <a class="citerefentry" href="glGetMap.xml"><span class="citerefentry"><span class="refentrytitle">glGetMap</span></span></a>,
2355             <a class="citerefentry" href="glGetMaterial.xml"><span class="citerefentry"><span class="refentrytitle">glGetMaterial</span></span></a>,
2356             <a class="citerefentry" href="glGetMinmax.xml"><span class="citerefentry"><span class="refentrytitle">glGetMinmax</span></span></a>,
2357             <a class="citerefentry" href="glGetMinmaxParameter.xml"><span class="citerefentry"><span class="refentrytitle">glGetMinmaxParameter</span></span></a>,
2358             <a class="citerefentry" href="glGetPixelMap.xml"><span class="citerefentry"><span class="refentrytitle">glGetPixelMap</span></span></a>,
2359             <a class="citerefentry" href="glGetPointerv.xml"><span class="citerefentry"><span class="refentrytitle">glGetPointerv</span></span></a>,
2360             <a class="citerefentry" href="glGetPolygonStipple.xml"><span class="citerefentry"><span class="refentrytitle">glGetPolygonStipple</span></span></a>,
2361             <a class="citerefentry" href="glGetProgram.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgram</span></span></a>,
2362             <a class="citerefentry" href="glGetProgramInfoLog.xml"><span class="citerefentry"><span class="refentrytitle">glGetProgramInfoLog</span></span></a>,
2363             <a class="citerefentry" href="glGetQueryiv.xml"><span class="citerefentry"><span class="refentrytitle">glGetQueryiv</span></span></a>,
2364             <a class="citerefentry" href="glGetQueryObject.xml"><span class="citerefentry"><span class="refentrytitle">glGetQueryObject</span></span></a>,
2365             <a class="citerefentry" href="glGetSeparableFilter.xml"><span class="citerefentry"><span class="refentrytitle">glGetSeparableFilter</span></span></a>,
2366             <a class="citerefentry" href="glGetShader.xml"><span class="citerefentry"><span class="refentrytitle">glGetShader</span></span></a>,
2367             <a class="citerefentry" href="glGetShaderInfoLog.xml"><span class="citerefentry"><span class="refentrytitle">glGetShaderInfoLog</span></span></a>,
2368             <a class="citerefentry" href="glGetShaderSource.xml"><span class="citerefentry"><span class="refentrytitle">glGetShaderSource</span></span></a>,
2369             <a class="citerefentry" href="glGetString.xml"><span class="citerefentry"><span class="refentrytitle">glGetString</span></span></a>,
2370             <a class="citerefentry" href="glGetTexEnv.xml"><span class="citerefentry"><span class="refentrytitle">glGetTexEnv</span></span></a>,
2371             <a class="citerefentry" href="glGetTexGen.xml"><span class="citerefentry"><span class="refentrytitle">glGetTexGen</span></span></a>,
2372             <a class="citerefentry" href="glGetTexImage.xml"><span class="citerefentry"><span class="refentrytitle">glGetTexImage</span></span></a>,
2373             <a class="citerefentry" href="glGetTexLevelParameter.xml"><span class="citerefentry"><span class="refentrytitle">glGetTexLevelParameter</span></span></a>,
2374             <a class="citerefentry" href="glGetTexParameter.xml"><span class="citerefentry"><span class="refentrytitle">glGetTexParameter</span></span></a>,
2375             <a class="citerefentry" href="glGetUniform.xml"><span class="citerefentry"><span class="refentrytitle">glGetUniform</span></span></a>,
2376             <a class="citerefentry" href="glGetUniformLocation.xml"><span class="citerefentry"><span class="refentrytitle">glGetUniformLocation</span></span></a>,
2377             <a class="citerefentry" href="glGetVertexAttrib.xml"><span class="citerefentry"><span class="refentrytitle">glGetVertexAttrib</span></span></a>,
2378             <a class="citerefentry" href="glGetVertexAttribPointerv.xml"><span class="citerefentry"><span class="refentrytitle">glGetVertexAttribPointerv</span></span></a>,
2379             <a class="citerefentry" href="glIsEnabled.xml"><span class="citerefentry"><span class="refentrytitle">glIsEnabled</span></span></a>
2380         </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
2381             Copyright <span class="trademark"></span>© 1991-2006
2382             Silicon Graphics, Inc. This document is licensed under the SGI
2383             Free Software B License. For details, see
2384             <a class="ulink" href="http://oss.sgi.com/projects/FreeB/" target="_top">http://oss.sgi.com/projects/FreeB/</a>.
2385         </p></div></div></body></html>