upstream-doc/man2/glEnable.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
   3               "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
   4 <refentry id="glEnable">
   5     <refmeta>
   6         <refmetainfo>
   7             <copyright>
   8                 <year>1991-2006</year>
   9                 <holder>Silicon Graphics, Inc.</holder>
  10             </copyright>
  11         </refmetainfo>
  12         <refentrytitle>glEnable</refentrytitle>
  13         <manvolnum>3G</manvolnum>
  14     </refmeta>
  15     <refnamediv>
  16         <refname>glEnable</refname>
  17         <refpurpose>enable or disable server-side GL capabilities</refpurpose>
  18     </refnamediv>
  19     <refsynopsisdiv><title>C Specification</title>
  20         <funcsynopsis>
  21             <funcprototype>
  22                 <funcdef>void <function>glEnable</function></funcdef>
  23                 <paramdef>GLenum <parameter>cap</parameter></paramdef>
  24             </funcprototype>
  25         </funcsynopsis>
  26     </refsynopsisdiv>
  27     <refsect1 id="parameters"><title>Parameters</title>
  28         <variablelist>
  29         <varlistentry>
  30             <term><parameter>cap</parameter></term>
  31             <listitem>
  32                 <para>
  33                     Specifies a symbolic constant indicating a GL capability.
  34                 </para>
  35             </listitem>
  36         </varlistentry>
  37         </variablelist>
  38     </refsect1>
  39     <refsynopsisdiv><title>C Specification</title>
  40         <funcsynopsis>
  41             <funcprototype>
  42                 <funcdef>void <function>glDisable</function></funcdef>
  43                 <paramdef>GLenum <parameter>cap</parameter></paramdef>
  44             </funcprototype>
  45         </funcsynopsis>
  46     </refsynopsisdiv>
  47     <refsect1 id="parameters2"><title>Parameters</title>
  48         <variablelist>
  49         <varlistentry>
  50             <term><parameter>cap</parameter></term>
  51             <listitem>
  52                 <para>
  53                     Specifies a symbolic constant indicating a GL capability.
  54                 </para>
  55             </listitem>
  56         </varlistentry>
  57         </variablelist>
  58     </refsect1>
  59     <refsect1 id="description"><title>Description</title>
  60         <para>
  61             <function>glEnable</function> and <citerefentry><refentrytitle>glDisable</refentrytitle></citerefentry> enable and disable various capabilities.
  62             Use <citerefentry><refentrytitle>glIsEnabled</refentrytitle></citerefentry> or <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> to determine the current setting
  63             of any capability. The initial value for each capability with the
  64             exception of <constant>GL_DITHER</constant> and <constant>GL_MULTISAMPLE</constant> is <constant>GL_FALSE</constant>. The initial value for
  65             <constant>GL_DITHER</constant> and <constant>GL_MULTISAMPLE</constant> is <constant>GL_TRUE</constant>.
  66         </para>
  67         <para>
  68             Both <function>glEnable</function> and <citerefentry><refentrytitle>glDisable</refentrytitle></citerefentry> take a single argument, <parameter>cap</parameter>,
  69             which can assume one of the following values:
  70         </para>
  71         <variablelist>
  72             <varlistentry>
  73                 <term><constant>GL_ALPHA_TEST</constant></term>
  74                 <listitem>
  75                           <para>
  76                           </para>
  77                     <para>
  78                         If enabled,
  79                         do alpha testing. See
  80                         <citerefentry><refentrytitle>glAlphaFunc</refentrytitle></citerefentry>.
  81                     </para>
  82                 </listitem>
  83             </varlistentry>
  84             <varlistentry>
  85                 <term><constant>GL_AUTO_NORMAL</constant></term>
  86                 <listitem>
  87                         <para>
  88                         </para>
  89                     <para>
  90                         If enabled,
  91                         generate normal vectors when either
  92                         <constant>GL_MAP2_VERTEX_3</constant> or
  93                         <constant>GL_MAP2_VERTEX_4</constant> is used to generate vertices.
  94                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
  95                     </para>
  96                 </listitem>
  97             </varlistentry>
  98             <varlistentry>
  99                 <term><constant>GL_BLEND</constant></term>
 100                 <listitem>
 101                         <para>
 102                         </para>
 103                     <para>
 104                         If enabled,
 105                         blend the computed fragment color values with the values in the color
 106                         buffers. See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry>.
 107                     </para>
 108                 </listitem>
 109             </varlistentry>
 110             <varlistentry>
 111                 <term><constant>GL_CLIP_PLANE</constant><emphasis>i</emphasis></term>
 112                 <listitem>
 113                         <para>
 114                         </para>
 115                     <para>
 116                         If enabled,
 117                         clip geometry against user-defined clipping plane <emphasis>i</emphasis>.
 118                         See <citerefentry><refentrytitle>glClipPlane</refentrytitle></citerefentry>.
 119                     </para>
 120                 </listitem>
 121             </varlistentry>
 122             <varlistentry>
 123                 <term><constant>GL_COLOR_LOGIC_OP</constant></term>
 124                 <listitem>
 125                         <para>
 126                         </para>
 127                     <para>
 128                         If enabled,
 129                         apply the currently selected logical operation to the computed fragment
 130                         color and color buffer values. See <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>.
 131                     </para>
 132                 </listitem>
 133             </varlistentry>
 134             <varlistentry>
 135                 <term><constant>GL_COLOR_MATERIAL</constant></term>
 136                 <listitem>
 137                         <para>
 138                         </para>
 139                     <para>
 140                         If enabled,
 141                         have one or more material parameters track the current color.
 142                         See <citerefentry><refentrytitle>glColorMaterial</refentrytitle></citerefentry>.
 143                     </para>
 144                 </listitem>
 145             </varlistentry>
 146             <varlistentry>
 147                 <term><constant>GL_COLOR_SUM</constant></term>
 148                 <listitem>
 149                         <para>
 150                         </para>
 151                     <para>
 152                         If enabled and no fragment shader is active,
 153                         add the secondary color value to the computed fragment color.
 154                         See <citerefentry><refentrytitle>glSecondaryColor</refentrytitle></citerefentry>.
 155                     </para>
 156                 </listitem>
 157             </varlistentry>
 158             <varlistentry>
 159                 <term><constant>GL_COLOR_TABLE</constant></term>
 160                 <listitem>
 161                         <para>
 162                         </para>
 163                     <para>
 164                         If enabled,
 165                         perform a color table lookup on the incoming RGBA color values.
 166                         See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
 167                     </para>
 168                 </listitem>
 169             </varlistentry>
 170             <varlistentry>
 171                 <term><constant>GL_CONVOLUTION_1D</constant></term>
 172                 <listitem>
 173                         <para>
 174                         </para>
 175                     <para>
 176                         If enabled,
 177                         perform a 1D convolution operation on incoming RGBA color values.
 178                         See <citerefentry><refentrytitle>glConvolutionFilter1D</refentrytitle></citerefentry>.
 179                     </para>
 180                 </listitem>
 181             </varlistentry>
 182             <varlistentry>
 183                 <term><constant>GL_CONVOLUTION_2D</constant></term>
 184                 <listitem>
 185                         <para>
 186                         </para>
 187                     <para>
 188                         If enabled,
 189                         perform a 2D convolution operation on incoming RGBA color values.
 190                         See <citerefentry><refentrytitle>glConvolutionFilter2D</refentrytitle></citerefentry>.
 191                     </para>
 192                 </listitem>
 193             </varlistentry>
 194             <varlistentry>
 195                 <term><constant>GL_CULL_FACE</constant></term>
 196                 <listitem>
 197                         <para>
 198                         </para>
 199                     <para>
 200                         If enabled,
 201                         cull polygons based on their winding in window coordinates.
 202                         See <citerefentry><refentrytitle>glCullFace</refentrytitle></citerefentry>.
 203                     </para>
 204                 </listitem>
 205             </varlistentry>
 206             <varlistentry>
 207                 <term><constant>GL_DEPTH_TEST</constant></term>
 208                 <listitem>
 209                         <para>
 210                         </para>
 211                     <para>
 212                         If enabled,
 213                         do depth comparisons and update the depth buffer. Note that even if
 214                         the depth buffer exists and the depth mask is non-zero, the
 215                         depth buffer is not updated if the depth test is disabled. See
 216                         <citerefentry><refentrytitle>glDepthFunc</refentrytitle></citerefentry> and
 217                         <citerefentry><refentrytitle>glDepthRange</refentrytitle></citerefentry>.
 218                     </para>
 219                 </listitem>
 220             </varlistentry>
 221             <varlistentry>
 222                 <term><constant>GL_DITHER</constant>    </term>
 223                 <listitem>
 224                         <para>
 225                         </para>
 226                     <para>
 227                         If enabled,
 228                         dither color components or indices before they are written to the
 229                         color buffer.
 230                     </para>
 231                 </listitem>
 232             </varlistentry>
 233             <varlistentry>
 234                 <term><constant>GL_FOG</constant></term>
 235                 <listitem>
 236                         <para>
 237                         </para>
 238                     <para>
 239                         If enabled and no fragment shader is active,
 240                         blend a fog color into the post-texturing color.
 241                         See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
 242                     </para>
 243                 </listitem>
 244             </varlistentry>
 245             <varlistentry>
 246                 <term><constant>GL_HISTOGRAM</constant></term>
 247                 <listitem>
 248                         <para>
 249                         </para>
 250                     <para>
 251                         If enabled,
 252                         histogram incoming RGBA color values.
 253                         See <citerefentry><refentrytitle>glHistogram</refentrytitle></citerefentry>.
 254                     </para>
 255                 </listitem>
 256             </varlistentry>
 257             <varlistentry>
 258                 <term><constant>GL_INDEX_LOGIC_OP</constant></term>
 259                 <listitem>
 260                         <para>
 261                         </para>
 262                     <para>
 263                         If enabled,
 264                         apply the currently selected logical operation to the incoming index and color
 265                         buffer indices.
 266                         See <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>.
 267                     </para>
 268                 </listitem>
 269             </varlistentry>
 270             <varlistentry>
 271                 <term><constant>GL_LIGHT</constant><emphasis>i</emphasis></term>
 272                 <listitem>
 273                         <para>
 274                         </para>
 275                     <para>
 276                         If enabled,
 277                         include light <emphasis>i</emphasis> in the evaluation of the lighting
 278                         equation. See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glLight</refentrytitle></citerefentry>.
 279                     </para>
 280                 </listitem>
 281             </varlistentry>
 282             <varlistentry>
 283                 <term><constant>GL_LIGHTING</constant></term>
 284                 <listitem>
 285                         <para>
 286                         </para>
 287                     <para>
 288                         If enabled and no vertex shader is active,
 289                         use the current lighting parameters to compute the vertex color or index.
 290                         Otherwise, simply associate the current color or index with each
 291                         vertex. See
 292                         <citerefentry><refentrytitle>glMaterial</refentrytitle></citerefentry>, <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>, and <citerefentry><refentrytitle>glLight</refentrytitle></citerefentry>.
 293                     </para>
 294                 </listitem>
 295             </varlistentry>
 296             <varlistentry>
 297                 <term><constant>GL_LINE_SMOOTH</constant></term>
 298                 <listitem>
 299                         <para>
 300                         </para>
 301                     <para>
 302                         If enabled,
 303                         draw lines with correct filtering.
 304                         Otherwise,
 305                         draw aliased lines.
 306                         See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>.
 307                     </para>
 308                 </listitem>
 309             </varlistentry>
 310             <varlistentry>
 311                 <term><constant>GL_LINE_STIPPLE</constant></term>
 312                 <listitem>
 313                         <para>
 314                         </para>
 315                     <para>
 316                         If enabled,
 317                         use the current line stipple pattern when drawing lines. See
 318                         <citerefentry><refentrytitle>glLineStipple</refentrytitle></citerefentry>.
 319                     </para>
 320                 </listitem>
 321             </varlistentry>
 322             <varlistentry>
 323                 <term><constant>GL_MAP1_COLOR_4</constant></term>
 324                 <listitem>
 325                         <para>
 326                         </para>
 327                     <para>
 328                         If enabled,
 329                         calls to
 330                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 331                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 332                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate RGBA values.
 333                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 334                     </para>
 335                 </listitem>
 336             </varlistentry>
 337             <varlistentry>
 338                 <term><constant>GL_MAP1_INDEX</constant></term>
 339                 <listitem>
 340                         <para>
 341                         </para>
 342                     <para>
 343                         If enabled,
 344                         calls to
 345                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 346                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 347                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate color indices.
 348                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 349                     </para>
 350                 </listitem>
 351             </varlistentry>
 352             <varlistentry>
 353                 <term><constant>GL_MAP1_NORMAL</constant></term>
 354                 <listitem>
 355                         <para>
 356                         </para>
 357                     <para>
 358                         If enabled,
 359                         calls to
 360                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 361                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 362                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate normals.
 363                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 364                     </para>
 365                 </listitem>
 366             </varlistentry>
 367             <varlistentry>
 368                 <term><constant>GL_MAP1_TEXTURE_COORD_1</constant></term>
 369                 <listitem>
 370                         <para>
 371                         </para>
 372                     <para>
 373                         If enabled,
 374                         calls to
 375                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 376                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 377                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate
 378                         <emphasis>s</emphasis>
 379                         texture coordinates.
 380                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 381                     </para>
 382                 </listitem>
 383             </varlistentry>
 384             <varlistentry>
 385                 <term><constant>GL_MAP1_TEXTURE_COORD_2</constant></term>
 386                 <listitem>
 387                         <para>
 388                         </para>
 389                     <para>
 390                         If enabled,
 391                         calls to
 392                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 393                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 394                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate
 395                         <emphasis>s</emphasis> and
 396                         <emphasis>t</emphasis> texture coordinates.
 397                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 398                     </para>
 399                 </listitem>
 400             </varlistentry>
 401             <varlistentry>
 402                 <term><constant>GL_MAP1_TEXTURE_COORD_3</constant></term>
 403                 <listitem>
 404                         <para>
 405                         </para>
 406                     <para>
 407                         If enabled,
 408                         calls to
 409                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 410                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 411                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate
 412                         <emphasis>s</emphasis>,
 413                         <emphasis>t</emphasis>, and
 414                         <emphasis>r</emphasis> texture coordinates.
 415                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 416                     </para>
 417                 </listitem>
 418             </varlistentry>
 419             <varlistentry>
 420                 <term><constant>GL_MAP1_TEXTURE_COORD_4</constant></term>
 421                 <listitem>
 422                         <para>
 423                         </para>
 424                     <para>
 425                         If enabled,
 426                         calls to
 427                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 428                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 429                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate
 430                         <emphasis>s</emphasis>,
 431                         <emphasis>t</emphasis>,
 432                         <emphasis>r</emphasis>, and
 433                         <emphasis>q</emphasis> texture coordinates.
 434                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 435                     </para>
 436                 </listitem>
 437             </varlistentry>
 438             <varlistentry>
 439                 <term><constant>GL_MAP1_VERTEX_3</constant></term>
 440                 <listitem>
 441                         <para>
 442                         </para>
 443                     <para>
 444                         If enabled,
 445                         calls to
 446                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 447                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 448                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate
 449                         <emphasis>x</emphasis>, <emphasis>y</emphasis>, and <emphasis>z</emphasis> vertex coordinates.
 450                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 451                     </para>
 452                 </listitem>
 453             </varlistentry>
 454             <varlistentry>
 455                 <term><constant>GL_MAP1_VERTEX_4</constant></term>
 456                 <listitem>
 457                         <para>
 458                         </para>
 459                     <para>
 460                         If enabled,
 461                         calls to
 462                         <citerefentry><refentrytitle>glEvalCoord1</refentrytitle></citerefentry>,
 463                         <citerefentry><refentrytitle>glEvalMesh1</refentrytitle></citerefentry>, and
 464                         <citerefentry><refentrytitle>glEvalPoint1</refentrytitle></citerefentry> generate
 465                         homogeneous
 466                         <emphasis>x</emphasis>,
 467                         <emphasis>y</emphasis>,
 468                         <emphasis>z</emphasis>, and
 469                         <emphasis>w</emphasis> vertex coordinates.
 470                         See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
 471                     </para>
 472                 </listitem>
 473             </varlistentry>
 474             <varlistentry>
 475                 <term><constant>GL_MAP2_COLOR_4</constant></term>
 476                 <listitem>
 477                         <para>
 478                         </para>
 479                     <para>
 480                         If enabled,
 481                         calls to
 482                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 483                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 484                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate RGBA values.
 485                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 486                     </para>
 487                 </listitem>
 488             </varlistentry>
 489             <varlistentry>
 490                 <term><constant>GL_MAP2_INDEX</constant></term>
 491                 <listitem>
 492                         <para>
 493                         </para>
 494                     <para>
 495                         If enabled,
 496                         calls to
 497                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 498                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 499                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate color indices.
 500                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 501                     </para>
 502                 </listitem>
 503             </varlistentry>
 504             <varlistentry>
 505                 <term><constant>GL_MAP2_NORMAL</constant></term>
 506                 <listitem>
 507                         <para>
 508                         </para>
 509                     <para>
 510                         If enabled,
 511                         calls to
 512                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 513                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 514                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate normals.
 515                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 516                     </para>
 517                 </listitem>
 518             </varlistentry>
 519             <varlistentry>
 520                 <term><constant>GL_MAP2_TEXTURE_COORD_1</constant></term>
 521                 <listitem>
 522                         <para>
 523                         </para>
 524                     <para>
 525                         If enabled,
 526                         calls to
 527                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 528                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 529                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate
 530                         <emphasis>s</emphasis>
 531                         texture coordinates.
 532                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 533                     </para>
 534                 </listitem>
 535             </varlistentry>
 536             <varlistentry>
 537                 <term><constant>GL_MAP2_TEXTURE_COORD_2</constant></term>
 538                 <listitem>
 539                         <para>
 540                         </para>
 541                     <para>
 542                         If enabled,
 543                         calls to
 544                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 545                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 546                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate
 547                         <emphasis>s</emphasis> and
 548                         <emphasis>t</emphasis> texture coordinates.
 549                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 550                     </para>
 551                 </listitem>
 552             </varlistentry>
 553             <varlistentry>
 554                 <term><constant>GL_MAP2_TEXTURE_COORD_3</constant></term>
 555                 <listitem>
 556                         <para>
 557                         </para>
 558                     <para>
 559                         If enabled,
 560                         calls to
 561                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 562                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 563                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate
 564                         <emphasis>s</emphasis>,
 565                         <emphasis>t</emphasis>, and
 566                         <emphasis>r</emphasis> texture coordinates.
 567                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 568                     </para>
 569                 </listitem>
 570             </varlistentry>
 571             <varlistentry>
 572                 <term><constant>GL_MAP2_TEXTURE_COORD_4</constant></term>
 573                 <listitem>
 574                         <para>
 575                         </para>
 576                     <para>
 577                         If enabled,
 578                         calls to
 579                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 580                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 581                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate
 582                         <emphasis>s</emphasis>,
 583                         <emphasis>t</emphasis>,
 584                         <emphasis>r</emphasis>, and
 585                         <emphasis>q</emphasis> texture coordinates.
 586                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 587                     </para>
 588                 </listitem>
 589             </varlistentry>
 590             <varlistentry>
 591                 <term><constant>GL_MAP2_VERTEX_3</constant></term>
 592                 <listitem>
 593                         <para>
 594                         </para>
 595                     <para>
 596                         If enabled,
 597                         calls to
 598                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 599                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 600                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate
 601                         <emphasis>x</emphasis>, <emphasis>y</emphasis>, and <emphasis>z</emphasis> vertex coordinates.
 602                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 603                     </para>
 604                 </listitem>
 605             </varlistentry>
 606             <varlistentry>
 607                 <term><constant>GL_MAP2_VERTEX_4</constant></term>
 608                 <listitem>
 609                         <para>
 610                         </para>
 611                     <para>
 612                         If enabled,
 613                         calls to
 614                         <citerefentry><refentrytitle>glEvalCoord2</refentrytitle></citerefentry>,
 615                         <citerefentry><refentrytitle>glEvalMesh2</refentrytitle></citerefentry>, and
 616                         <citerefentry><refentrytitle>glEvalPoint2</refentrytitle></citerefentry> generate
 617                         homogeneous
 618                         <emphasis>x</emphasis>,
 619                         <emphasis>y</emphasis>,
 620                         <emphasis>z</emphasis>, and
 621                         <emphasis>w</emphasis> vertex coordinates.
 622                         See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
 623                     </para>
 624                 </listitem>
 625             </varlistentry>
 626             <varlistentry>
 627                 <term><constant>GL_MINMAX</constant></term>
 628                 <listitem>
 629                         <para>
 630                         </para>
 631                     <para>
 632                         If enabled,
 633                         compute the minimum and maximum values of incoming RGBA color values.
 634                         See <citerefentry><refentrytitle>glMinmax</refentrytitle></citerefentry>.
 635                     </para>
 636                 </listitem>
 637             </varlistentry>
 638             <varlistentry>
 639                 <term><constant>GL_MULTISAMPLE</constant></term>
 640                 <listitem>
 641                         <para>
 642                         </para>
 643                     <para>
 644                         If enabled,
 645                         use multiple fragment samples in computing the final color of a pixel.
 646                         See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>.
 647                     </para>
 648                 </listitem>
 649             </varlistentry>
 650             <varlistentry>
 651                 <term><constant>GL_NORMALIZE</constant></term>
 652                 <listitem>
 653                         <para>
 654                         </para>
 655                     <para>
 656                         If enabled and no vertex shader is active,
 657                         normal vectors are normalized to unit length
 658                         after transformation and before lighting.  This method is generally
 659                         less efficient than <constant>GL_RESCALE_NORMAL</constant>. See
 660                         <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry> and
 661                         <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>.
 662                     </para>
 663                 </listitem>
 664             </varlistentry>
 665             <varlistentry>
 666                 <term><constant>GL_POINT_SMOOTH</constant></term>
 667                 <listitem>
 668                         <para>
 669                         </para>
 670                     <para>
 671                         If enabled,
 672                         draw points with proper filtering.
 673                         Otherwise,
 674                         draw aliased points.
 675                         See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>.
 676                     </para>
 677                 </listitem>
 678             </varlistentry>
 679             <varlistentry>
 680                 <term><constant>GL_POINT_SPRITE</constant></term>
 681                 <listitem>
 682                         <para>
 683                         </para>
 684                     <para>
 685                         If enabled,
 686                         calculate texture coordinates for points based on texture
 687                         environment and point parameter settings.  Otherwise texture coordinates
 688                         are constant across points.
 689                     </para>
 690                 </listitem>
 691             </varlistentry>
 692             <varlistentry>
 693                 <term><constant>GL_POLYGON_OFFSET_FILL</constant></term>
 694                 <listitem>
 695                         <para>
 696                         </para>
 697                     <para>
 698                         If enabled, and if the polygon is rendered in
 699                         <constant>GL_FILL</constant> mode, an offset is added to depth values of a polygon's
 700                         fragments before the depth comparison is performed.
 701                         See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>.
 702                     </para>
 703                 </listitem>
 704             </varlistentry>
 705             <varlistentry>
 706                 <term><constant>GL_POLYGON_OFFSET_LINE</constant></term>
 707                 <listitem>
 708                         <para>
 709                         </para>
 710                     <para>
 711                         If enabled, and if the polygon is rendered in
 712                         <constant>GL_LINE</constant> mode, an offset is added to depth values of a polygon's
 713                         fragments before the depth comparison is performed.
 714                         See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>.
 715                     </para>
 716                 </listitem>
 717             </varlistentry>
 718             <varlistentry>
 719                 <term><constant>GL_POLYGON_OFFSET_POINT</constant></term>
 720                 <listitem>
 721                         <para>
 722                         </para>
 723                     <para>
 724                         If enabled, an offset is added to depth values of a polygon's fragments
 725                         before the depth comparison is performed, if the polygon is rendered in
 726                         <constant>GL_POINT</constant> mode. See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>.
 727                     </para>
 728                 </listitem>
 729             </varlistentry>
 730             <varlistentry>
 731                 <term><constant>GL_POLYGON_SMOOTH</constant></term>
 732                 <listitem>
 733                         <para>
 734                         </para>
 735                     <para>
 736                         If enabled, draw polygons with proper filtering.
 737                         Otherwise, draw aliased polygons. For correct antialiased polygons,
 738                         an alpha buffer is needed and the polygons must be sorted front to
 739                         back.
 740                     </para>
 741                 </listitem>
 742             </varlistentry>
 743             <varlistentry>
 744                 <term><constant>GL_POLYGON_STIPPLE</constant></term>
 745                 <listitem>
 746                         <para>
 747                         </para>
 748                     <para>
 749                         If enabled,
 750                         use the current polygon stipple pattern when rendering
 751                         polygons. See <citerefentry><refentrytitle>glPolygonStipple</refentrytitle></citerefentry>.
 752                     </para>
 753                 </listitem>
 754             </varlistentry>
 755             <varlistentry>
 756                 <term><constant>GL_POST_COLOR_MATRIX_COLOR_TABLE</constant></term>
 757                 <listitem>
 758                         <para>
 759                         </para>
 760                     <para>
 761                         If enabled,
 762                         perform a color table lookup on RGBA color values after color matrix
 763                         transformation.
 764                         See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
 765                     </para>
 766                 </listitem>
 767             </varlistentry>
 768             <varlistentry>
 769                 <term><constant>GL_POST_CONVOLUTION_COLOR_TABLE</constant></term>
 770                 <listitem>
 771                         <para>
 772                         </para>
 773                     <para>
 774                         If enabled,
 775                         perform a color table lookup on RGBA color values after convolution.
 776                         See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
 777                     </para>
 778                 </listitem>
 779             </varlistentry>
 780             <varlistentry>
 781                 <term><constant>GL_RESCALE_NORMAL</constant></term>
 782                 <listitem>
 783                         <para>
 784                         </para>
 785                     <para>
 786                         If enabled and no vertex shader is active,
 787                         normal vectors are scaled after transformation and before
 788                         lighting by a factor computed from the modelview matrix.  If the
 789                         modelview matrix scales space uniformly, this has the effect of
 790                         restoring the transformed normal to unit length.  This method is generally
 791                         more efficient than <constant>GL_NORMALIZE</constant>. See
 792                         <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry> and
 793                         <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>.
 794                     </para>
 795                 </listitem>
 796             </varlistentry>
 797             <varlistentry>
 798                 <term><constant>GL_SAMPLE_ALPHA_TO_COVERAGE</constant></term>
 799                 <listitem>
 800                         <para>
 801                         </para>
 802                     <para>
 803                         If enabled,
 804                         compute a temporary coverage value where each bit is determined by the
 805                         alpha value at the corresponding sample location.  The temporary coverage
 806                         value is then ANDed with the fragment coverage value.
 807                     </para>
 808                 </listitem>
 809             </varlistentry>
 810             <varlistentry>
 811                 <term><constant>GL_SAMPLE_ALPHA_TO_ONE</constant></term>
 812                 <listitem>
 813                         <para>
 814                         </para>
 815                     <para>
 816                         If enabled,
 817                         each sample alpha value is replaced by the maximum representable alpha value.
 818                     </para>
 819                 </listitem>
 820             </varlistentry>
 821             <varlistentry>
 822                 <term><constant>GL_SAMPLE_COVERAGE</constant></term>
 823                 <listitem>
 824                         <para>
 825                         </para>
 826                     <para>
 827                         If enabled,
 828                         the fragment's coverage is ANDed with the temporary coverage value.  If
 829                         <constant>GL_SAMPLE_COVERAGE_INVERT</constant> is set to <constant>GL_TRUE</constant>, invert the coverage
 830                         value.
 831                         See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>.
 832                     </para>
 833                 </listitem>
 834             </varlistentry>
 835             <varlistentry>
 836                 <term><constant>GL_SEPARABLE_2D</constant></term>
 837                 <listitem>
 838                         <para>
 839                         </para>
 840                     <para>
 841                         If enabled, perform a two-dimensional convolution operation using a separable
 842                         convolution filter on incoming RGBA color values.
 843                         See <citerefentry><refentrytitle>glSeparableFilter2D</refentrytitle></citerefentry>.
 844                     </para>
 845                 </listitem>
 846             </varlistentry>
 847             <varlistentry>
 848                 <term><constant>GL_SCISSOR_TEST</constant></term>
 849                 <listitem>
 850                         <para>
 851                         </para>
 852                     <para>
 853                         If enabled,
 854                         discard fragments that are outside the scissor rectangle.
 855                         See <citerefentry><refentrytitle>glScissor</refentrytitle></citerefentry>.
 856                     </para>
 857                 </listitem>
 858             </varlistentry>
 859             <varlistentry>
 860                 <term><constant>GL_STENCIL_TEST</constant></term>
 861                 <listitem>
 862                         <para>
 863                         </para>
 864                     <para>
 865                         If enabled,
 866                         do stencil testing and update the stencil buffer.
 867                         See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>.
 868                     </para>
 869                 </listitem>
 870             </varlistentry>
 871             <varlistentry>
 872                 <term><constant>GL_TEXTURE_1D</constant></term>
 873                 <listitem>
 874                         <para>
 875                         </para>
 876                     <para>
 877                         If enabled and no fragment shader is active,
 878                         one-dimensional texturing is performed
 879                         (unless two- or three-dimensional or cube-mapped texturing is also enabled).
 880                         See <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry>.
 881                     </para>
 882                 </listitem>
 883             </varlistentry>
 884             <varlistentry>
 885                 <term><constant>GL_TEXTURE_2D</constant></term>
 886                 <listitem>
 887                         <para>
 888                         </para>
 889                     <para>
 890                         If enabled and no fragment shader is active,
 891                         two-dimensional texturing is performed
 892                         (unless three-dimensional or cube-mapped texturing is also enabled).
 893                         See <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>.
 894                     </para>
 895                 </listitem>
 896             </varlistentry>
 897             <varlistentry>
 898                 <term><constant>GL_TEXTURE_3D</constant></term>
 899                 <listitem>
 900                         <para>
 901                         </para>
 902                     <para>
 903                         If enabled and no fragment shader is active,
 904                         three-dimensional texturing is performed
 905                         (unless cube-mapped texturing is also enabled).
 906                         See <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>.
 907                     </para>
 908                 </listitem>
 909             </varlistentry>
 910             <varlistentry>
 911                 <term><constant>GL_TEXTURE_CUBE_MAP</constant></term>
 912                 <listitem>
 913                         <para>
 914                         </para>
 915                     <para>
 916                         If enabled and no fragment shader is active,
 917                         cube-mapped texturing is performed.
 918                         See <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>.
 919                     </para>
 920                 </listitem>
 921             </varlistentry>
 922             <varlistentry>
 923                 <term><constant>GL_TEXTURE_GEN_Q</constant></term>
 924                 <listitem>
 925                         <para>
 926                         </para>
 927                     <para>
 928                         If enabled and no vertex shader is active,
 929                         the <emphasis>q</emphasis> texture coordinate is computed using
 930                         the texture generation function defined with <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
 931                         Otherwise, the current <emphasis>q</emphasis> texture coordinate is used.
 932                         See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
 933                     </para>
 934                 </listitem>
 935             </varlistentry>
 936             <varlistentry>
 937                 <term><constant>GL_TEXTURE_GEN_R</constant></term>
 938                 <listitem>
 939                         <para>
 940                         </para>
 941                     <para>
 942                         If enabled and no vertex shader is active,
 943                         the <emphasis>r</emphasis> texture coordinate is computed using
 944                         the texture generation function defined with <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
 945                         Otherwise, the current <emphasis>r</emphasis> texture coordinate is used.
 946                         See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
 947                     </para>
 948                 </listitem>
 949             </varlistentry>
 950             <varlistentry>
 951                 <term><constant>GL_TEXTURE_GEN_S</constant></term>
 952                 <listitem>
 953                         <para>
 954                         </para>
 955                     <para>
 956                         If enabled and no vertex shader is active,
 957                         the <emphasis>s</emphasis> texture coordinate is computed using
 958                         the texture generation function defined with <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
 959                         Otherwise, the current <emphasis>s</emphasis> texture coordinate is used.
 960                         See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
 961                     </para>
 962                 </listitem>
 963             </varlistentry>
 964             <varlistentry>
 965                 <term><constant>GL_TEXTURE_GEN_T</constant></term>
 966                 <listitem>
 967                         <para>
 968                         </para>
 969                     <para>
 970                         If enabled and no vertex shader is active,
 971                         the <emphasis>t</emphasis> texture coordinate is computed using
 972                         the texture generation function defined with <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
 973                         Otherwise, the current <emphasis>t</emphasis> texture coordinate is used.
 974                         See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
 975                     </para>
 976                 </listitem>
 977             </varlistentry>
 978             <varlistentry>
 979                 <term><constant>GL_VERTEX_PROGRAM_POINT_SIZE</constant></term>
 980                 <listitem>
 981                         <para>
 982                         </para>
 983                     <para>
 984                         If enabled
 985                         and a vertex shader is active, then the derived point size is taken from the (potentially clipped) shader builtin
 986                         <constant>gl_PointSize</constant> and clamped to the implementation-dependent point size range.
 987                     </para>
 988                 </listitem>
 989             </varlistentry>
 990             <varlistentry>
 991                 <term><constant>GL_VERTEX_PROGRAM_TWO_SIDE</constant></term>
 992                 <listitem>
 993                         <para>
 994                         </para>
 995                     <para>
 996                         If enabled
 997                         and a vertex shader is active, it specifies that the GL will choose between front and back colors based on the
 998                         polygon's face direction of which the vertex being shaded is a part.  It has no effect on points or lines.
 999                     </para>
1000                 </listitem>
1001             </varlistentry>
1002         </variablelist>
1003     </refsect1>
1004     <refsect1 id="notes"><title>Notes</title>
1005         <para>
1006             <constant>GL_POLYGON_OFFSET_FILL</constant>, <constant>GL_POLYGON_OFFSET_LINE</constant>,
1007             <constant>GL_POLYGON_OFFSET_POINT</constant>,
1008             <constant>GL_COLOR_LOGIC_OP</constant>, and <constant>GL_INDEX_LOGIC_OP</constant> are available
1009             only if the GL version is 1.1 or greater.
1010         </para>
1011         <para>
1012             <constant>GL_RESCALE_NORMAL</constant>, and <constant>GL_TEXTURE_3D</constant> are available only if the
1013             GL version is 1.2 or greater.
1014         </para>
1015         <para>
1016             <constant>GL_MULTISAMPLE</constant>,
1017             <constant>GL_SAMPLE_ALPHA_TO_COVERAGE</constant>,
1018             <constant>GL_SAMPLE_ALPHA_TO_ONE</constant>,
1019             <constant>GL_SAMPLE_COVERAGE</constant>,
1020             <constant>GL_TEXTURE_CUBE_MAP</constant>
1021             are available only if the GL version is 1.3 or greater.
1022         </para>
1023         <para>
1024             <constant>GL_POINT_SPRITE</constant>,
1025             <constant>GL_VERTEX_PROGRAM_POINT_SIZE</constant>, and
1026             <constant>GL_VERTEX_PROGRAM_TWO_SIDE</constant>
1027             is available only if the GL version is 2.0 or greater.
1028         </para>
1029         <para>
1030             <constant>GL_COLOR_TABLE</constant>, <constant>GL_CONVOLUTION_1D</constant>, <constant>GL_CONVOLUTION_2D</constant>,
1031             <constant>GL_HISTOGRAM</constant>, <constant>GL_MINMAX</constant>,
1032             <constant>GL_POST_COLOR_MATRIX_COLOR_TABLE</constant>,
1033             <constant>GL_POST_CONVOLUTION_COLOR_TABLE</constant>, and
1034             <constant>GL_SEPARABLE_2D</constant> are available only if <code>ARB_imaging</code> is returned
1035             from <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with an argument of <constant>GL_EXTENSIONS</constant>.
1036         </para>
1037         <para>
1038             For OpenGL versions 1.3 and greater, or when <code>ARB_multitexture</code> is supported, <constant>GL_TEXTURE_1D</constant>,
1039             <constant>GL_TEXTURE_2D</constant>, <constant>GL_TEXTURE_3D</constant>, <constant>GL_TEXTURE_GEN_S</constant>,
1040             <constant>GL_TEXTURE_GEN_T</constant>, <constant>GL_TEXTURE_GEN_R</constant>, and <constant>GL_TEXTURE_GEN_Q</constant>
1041             enable or disable the respective state for the active texture unit
1042             specified with <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>.
1043         </para>
1044     </refsect1>
1045     <refsect1 id="errors"><title>Errors</title>
1046         <para>
1047             <constant>GL_INVALID_ENUM</constant> is generated if <parameter>cap</parameter> is not one of the values
1048             listed previously.
1049         </para>
1050         <para>
1051             <constant>GL_INVALID_OPERATION</constant> is generated if <function>glEnable</function> or <citerefentry><refentrytitle>glDisable</refentrytitle></citerefentry>
1052             is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>
1053             and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
1054         </para>
1055     </refsect1>
1056     <refsect1 id="associatedgets"><title>Associated Gets</title>
1057         <para>
1058             <citerefentry><refentrytitle>glIsEnabled</refentrytitle></citerefentry>
1059         </para>
1060         <para>
1061             <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry>
1062         </para>
1063     </refsect1>
1064     <refsect1 id="seealso"><title>See Also</title>
1065         <para>
1066             <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>,
1067             <citerefentry><refentrytitle>glAlphaFunc</refentrytitle></citerefentry>,
1068             <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry>,
1069             <citerefentry><refentrytitle>glClipPlane</refentrytitle></citerefentry>,
1070             <citerefentry><refentrytitle>glColorMaterial</refentrytitle></citerefentry>,
1071             <citerefentry><refentrytitle>glCullFace</refentrytitle></citerefentry>,
1072             <citerefentry><refentrytitle>glDepthFunc</refentrytitle></citerefentry>,
1073             <citerefentry><refentrytitle>glDepthRange</refentrytitle></citerefentry>,
1074             <citerefentry><refentrytitle>glEnableClientState</refentrytitle></citerefentry>,
1075             <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>,
1076             <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry>,
1077             <citerefentry><refentrytitle>glIsEnabled</refentrytitle></citerefentry>,
1078             <citerefentry><refentrytitle>glLight</refentrytitle></citerefentry>,
1079             <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>,
1080             <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>,
1081             <citerefentry><refentrytitle>glLineStipple</refentrytitle></citerefentry>,
1082             <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>,
1083             <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>,
1084             <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>,
1085             <citerefentry><refentrytitle>glMaterial</refentrytitle></citerefentry>,
1086             <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>,
1087             <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>,
1088             <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>,
1089             <citerefentry><refentrytitle>glPolygonMode</refentrytitle></citerefentry>,
1090             <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>,
1091             <citerefentry><refentrytitle>glPolygonStipple</refentrytitle></citerefentry>,
1092             <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>,
1093             <citerefentry><refentrytitle>glScissor</refentrytitle></citerefentry>,
1094             <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry>,
1095             <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>,
1096             <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>,
1097             <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry>,
1098             <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>,
1099             <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>
1100         </para>
1101     </refsect1>
1102     <refsect1 id="Copyright"><title>Copyright</title>
1103         <para>
1104             Copyright <trademark class="copyright"></trademark> 1991-2006
1105             Silicon Graphics, Inc. This document is licensed under the SGI
1106             Free Software B License. For details, see
1107             <ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
1108         </para>
1109     </refsect1>
1110 </refentry>