upstream-doc/man2/glTexImage1D.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="glTexImage1D">
   5     <refmeta>
   6         <refmetainfo>
   7             <copyright>
   8                 <year>1991-2006</year>
   9                 <holder>Silicon Graphics, Inc.</holder>
  10             </copyright>
  11         </refmetainfo>
  12         <refentrytitle>glTexImage1D</refentrytitle>
  13         <manvolnum>3G</manvolnum>
  14     </refmeta>
  15     <refnamediv>
  16         <refname>glTexImage1D</refname>
  17         <refpurpose>specify a one-dimensional texture image</refpurpose>
  18     </refnamediv>
  19     <refsynopsisdiv><title>C Specification</title>
  20         <funcsynopsis>
  21             <funcprototype>
  22                 <funcdef>void <function>glTexImage1D</function></funcdef>
  23                 <paramdef>GLenum <parameter>target</parameter></paramdef>
  24                 <paramdef>GLint <parameter>level</parameter></paramdef>
  25                 <paramdef>GLint <parameter>internalFormat</parameter></paramdef>
  26                 <paramdef>GLsizei <parameter>width</parameter></paramdef>
  27                 <paramdef>GLint <parameter>border</parameter></paramdef>
  28                 <paramdef>GLenum <parameter>format</parameter></paramdef>
  29                 <paramdef>GLenum <parameter>type</parameter></paramdef>
  30                 <paramdef>const GLvoid * <parameter>data</parameter></paramdef>
  31             </funcprototype>
  32         </funcsynopsis>
  33     </refsynopsisdiv>
  34     <!-- eqn: ignoring delim $$ -->
  35     <para>
  36     </para>
  37     <refsect1 id="parameters"><title>Parameters</title>
  38         <variablelist>
  39         <varlistentry>
  40             <term><parameter>target</parameter></term>
  41             <listitem>
  42                 <para>
  43                     Specifies the target texture.
  44                     Must be <constant>GL_TEXTURE_1D</constant> or <constant>GL_PROXY_TEXTURE_1D</constant>.
  45                 </para>
  46             </listitem>
  47         </varlistentry>
  48         <varlistentry>
  49             <term><parameter>level</parameter></term>
  50             <listitem>
  51                 <para>
  52                     Specifies the level-of-detail number.
  53                     Level 0 is the base image level.
  54                     Level <emphasis>n</emphasis> is the <emphasis>n</emphasis>th mipmap reduction image.
  55                 </para>
  56             </listitem>
  57         </varlistentry>
  58         <varlistentry>
  59             <term><parameter>internalFormat</parameter></term>
  60             <listitem>
  61                 <para>
  62                     Specifies the number of color components in the texture.
  63                     Must be 1, 2, 3, or 4, or one of the following symbolic constants:
  64                     <constant>GL_ALPHA</constant>,
  65                     <constant>GL_ALPHA4</constant>,
  66                     <constant>GL_ALPHA8</constant>,
  67                     <constant>GL_ALPHA12</constant>,
  68                     <constant>GL_ALPHA16</constant>,
  69                     <constant>GL_COMPRESSED_ALPHA</constant>,
  70                     <constant>GL_COMPRESSED_LUMINANCE</constant>,
  71                     <constant>GL_COMPRESSED_LUMINANCE_ALPHA</constant>,
  72                     <constant>GL_COMPRESSED_INTENSITY</constant>,
  73                     <constant>GL_COMPRESSED_RGB</constant>,
  74                     <constant>GL_COMPRESSED_RGBA</constant>,
  75                     <constant>GL_DEPTH_COMPONENT</constant>,
  76                     <constant>GL_DEPTH_COMPONENT16</constant>,
  77                     <constant>GL_DEPTH_COMPONENT24</constant>,
  78                     <constant>GL_DEPTH_COMPONENT32</constant>,
  79                     <constant>GL_LUMINANCE</constant>,
  80                     <constant>GL_LUMINANCE4</constant>,
  81                     <constant>GL_LUMINANCE8</constant>,
  82                     <constant>GL_LUMINANCE12</constant>,
  83                     <constant>GL_LUMINANCE16</constant>,
  84                     <constant>GL_LUMINANCE_ALPHA</constant>,
  85                     <constant>GL_LUMINANCE4_ALPHA4</constant>,
  86                     <constant>GL_LUMINANCE6_ALPHA2</constant>,
  87                     <constant>GL_LUMINANCE8_ALPHA8</constant>,
  88                     <constant>GL_LUMINANCE12_ALPHA4</constant>,
  89                     <constant>GL_LUMINANCE12_ALPHA12</constant>,
  90                     <constant>GL_LUMINANCE16_ALPHA16</constant>,
  91                     <constant>GL_INTENSITY</constant>,
  92                     <constant>GL_INTENSITY4</constant>,
  93                     <constant>GL_INTENSITY8</constant>,
  94                     <constant>GL_INTENSITY12</constant>,
  95                     <constant>GL_INTENSITY16</constant>,
  96                     <constant>GL_R3_G3_B2</constant>,
  97                     <constant>GL_RGB</constant>,
  98                     <constant>GL_RGB4</constant>,
  99                     <constant>GL_RGB5</constant>,
 100                     <constant>GL_RGB8</constant>,
 101                     <constant>GL_RGB10</constant>,
 102                     <constant>GL_RGB12</constant>,
 103                     <constant>GL_RGB16</constant>,
 104                     <constant>GL_RGBA</constant>,
 105                     <constant>GL_RGBA2</constant>,
 106                     <constant>GL_RGBA4</constant>,
 107                     <constant>GL_RGB5_A1</constant>,
 108                     <constant>GL_RGBA8</constant>,
 109                     <constant>GL_RGB10_A2</constant>,
 110                     <constant>GL_RGBA12</constant>,
 111                     <constant>GL_RGBA16</constant>,
 112                     <constant>GL_SLUMINANCE</constant>,
 113                     <constant>GL_SLUMINANCE8</constant>,
 114                     <constant>GL_SLUMINANCE_ALPHA</constant>,
 115                     <constant>GL_SLUMINANCE8_ALPHA8</constant>,
 116                     <constant>GL_SRGB</constant>,
 117                     <constant>GL_SRGB8</constant>,
 118                     <constant>GL_SRGB_ALPHA</constant>, or
 119                     <constant>GL_SRGB8_ALPHA8</constant>.
 120                 </para>
 121             </listitem>
 122         </varlistentry>
 123         <varlistentry>
 124             <term><parameter>width</parameter></term>
 125             <listitem>
 126                 <para>
 127                     Specifies the width of the texture image including the border if any. If the GL version does not support non-power-of-two sizes, this value must be
 128                     <inlineequation><mml:math>
 129                         <!-- eqn: 2 sup n + 2 ( border ):-->
 130                         <mml:mrow>
 131                             <mml:msup><mml:mn>2</mml:mn>
 132                             <mml:mi mathvariant="italic">n</mml:mi>
 133                             </mml:msup>
 134                             <mml:mo>+</mml:mo>
 135                             <mml:mrow>
 136                                 <mml:mn>2</mml:mn>
 137                                 <mml:mo>&af;</mml:mo>
 138                                 <mml:mfenced open="(" close=")">
 139                                     <mml:mi mathvariant="italic">border</mml:mi>
 140                                 </mml:mfenced>
 141                             </mml:mrow>
 142                         </mml:mrow>
 143                     </mml:math></inlineequation>
 144                     for some integer
 145                     <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>.
 146                     All
 147                     implementations support texture images that are at least 64 texels
 148                     wide. The height of the 1D texture image is 1.
 149                 </para>
 150             </listitem>
 151         </varlistentry>
 152         <varlistentry>
 153             <term><parameter>border</parameter></term>
 154             <listitem>
 155                 <para>
 156                     Specifies the width of the border.
 157                     Must be either 0 or 1.
 158                 </para>
 159             </listitem>
 160         </varlistentry>
 161         <varlistentry>
 162             <term><parameter>format</parameter></term>
 163             <listitem>
 164                 <para>
 165                     Specifies the format of the pixel data.
 166                     The following symbolic values are accepted:
 167                     <constant>GL_COLOR_INDEX</constant>,
 168                     <constant>GL_RED</constant>,
 169                     <constant>GL_GREEN</constant>,
 170                     <constant>GL_BLUE</constant>,
 171                     <constant>GL_ALPHA</constant>,
 172                     <constant>GL_RGB</constant>,
 173                     <constant>GL_BGR</constant>,
 174                     <constant>GL_RGBA</constant>,
 175                     <constant>GL_BGRA</constant>,
 176                     <constant>GL_LUMINANCE</constant>, and
 177                     <constant>GL_LUMINANCE_ALPHA</constant>.
 178                 </para>
 179             </listitem>
 180         </varlistentry>
 181         <varlistentry>
 182             <term><parameter>type</parameter></term>
 183             <listitem>
 184                 <para>
 185                     Specifies the data type of the pixel data.
 186                     The following symbolic values are accepted:
 187                     <constant>GL_UNSIGNED_BYTE</constant>,
 188                     <constant>GL_BYTE</constant>,
 189                     <constant>GL_BITMAP</constant>,
 190                     <constant>GL_UNSIGNED_SHORT</constant>,
 191                     <constant>GL_SHORT</constant>,
 192                     <constant>GL_UNSIGNED_INT</constant>,
 193                     <constant>GL_INT</constant>,
 194                     <constant>GL_FLOAT</constant>,
 195                     <constant>GL_UNSIGNED_BYTE_3_3_2</constant>,
 196                     <constant>GL_UNSIGNED_BYTE_2_3_3_REV</constant>,
 197                     <constant>GL_UNSIGNED_SHORT_5_6_5</constant>,
 198                     <constant>GL_UNSIGNED_SHORT_5_6_5_REV</constant>,
 199                     <constant>GL_UNSIGNED_SHORT_4_4_4_4</constant>,
 200                     <constant>GL_UNSIGNED_SHORT_4_4_4_4_REV</constant>,
 201                     <constant>GL_UNSIGNED_SHORT_5_5_5_1</constant>,
 202                     <constant>GL_UNSIGNED_SHORT_1_5_5_5_REV</constant>,
 203                     <constant>GL_UNSIGNED_INT_8_8_8_8</constant>,
 204                     <constant>GL_UNSIGNED_INT_8_8_8_8_REV</constant>,
 205                     <constant>GL_UNSIGNED_INT_10_10_10_2</constant>, and
 206                     <constant>GL_UNSIGNED_INT_2_10_10_10_REV</constant>.
 207                 </para>
 208             </listitem>
 209         </varlistentry>
 210         <varlistentry>
 211             <term><parameter>data</parameter></term>
 212             <listitem>
 213                 <para>
 214                     Specifies a pointer to the image data in memory.
 215                 </para>
 216             </listitem>
 217         </varlistentry>
 218         </variablelist>
 219     </refsect1>
 220     <refsect1 id="description"><title>Description</title>
 221         <para>
 222             Texturing maps a portion of a specified texture image
 223             onto each graphical primitive for which texturing is enabled.
 224             To enable and disable one-dimensional texturing, call <citerefentry><refentrytitle>glEnable</refentrytitle></citerefentry>
 225             and <citerefentry><refentrytitle>glDisable</refentrytitle></citerefentry> with argument <constant>GL_TEXTURE_1D</constant>.
 226         </para>
 227         <para>
 228             Texture images are defined with <function>glTexImage1D</function>.
 229             The arguments describe the parameters of the texture image,
 230             such as width,
 231             width of the border,
 232             level-of-detail number
 233             (see <citerefentry><refentrytitle>glTexParameter</refentrytitle></citerefentry>),
 234             and the internal resolution and format used to store the image.
 235             The last three arguments describe how the image is represented in
 236             memory; they are identical to the pixel formats used for
 237             <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>.
 238         </para>
 239         <para>
 240             If <parameter>target</parameter> is <constant>GL_PROXY_TEXTURE_1D</constant>, no data is read from <parameter>data</parameter>, but
 241             all of the texture image state is recalculated, checked for
 242             consistency, and checked against the implementation's capabilities.
 243             If the implementation cannot handle a texture of the
 244             requested texture size, it sets all of the image state to 0,
 245             but does not generate an error (see <citerefentry><refentrytitle>glGetError</refentrytitle></citerefentry>). To query for an
 246             entire mipmap array, use an image array level greater than or equal to
 247             1.
 248         </para>
 249         <para>
 250             If <parameter>target</parameter> is <constant>GL_TEXTURE_1D</constant>,
 251             data is read from <parameter>data</parameter> as a sequence of signed or unsigned bytes,
 252             shorts,
 253             or longs,
 254             or single-precision floating-point values,
 255             depending on <parameter>type</parameter>.
 256             These values are grouped into sets of one,
 257             two,
 258             three,
 259             or four values,
 260             depending on <parameter>format</parameter>,
 261             to form elements.
 262             If <parameter>type</parameter> is <constant>GL_BITMAP</constant>,
 263             the data is considered as a string of unsigned bytes
 264             (and <parameter>format</parameter> must be <constant>GL_COLOR_INDEX</constant>).
 265             Each data byte is treated as eight 1-bit elements,
 266             with bit ordering determined by <constant>GL_UNPACK_LSB_FIRST</constant>
 267             (see <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>).
 268         </para>
 269         <para>
 270             If a non-zero named buffer object is bound to the <constant>GL_PIXEL_UNPACK_BUFFER</constant> target
 271             (see <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>) while a texture image is
 272             specified, <parameter>data</parameter> is treated as a byte offset into the buffer object's data store.
 273         </para>
 274         <para>
 275             The first element corresponds to the left end of the texture array.
 276             Subsequent elements progress left-to-right through the remaining texels
 277             in the texture array.
 278             The final element corresponds to the right end of the texture array.
 279         </para>
 280         <para>
 281             <parameter>format</parameter> determines the composition of each element in <parameter>data</parameter>.
 282             It can assume one of these symbolic values:
 283         </para>
 284         <variablelist>
 285             <varlistentry>
 286                 <term><constant>GL_COLOR_INDEX</constant></term>
 287                 <listitem>
 288                     <para>
 289                         Each element is a single value,
 290                         a color index.
 291                         The GL converts it to fixed point
 292                         (with an unspecified number of zero bits to the right of the binary point),
 293                         shifted left or right depending on the value and sign of <constant>GL_INDEX_SHIFT</constant>,
 294                         and added to <constant>GL_INDEX_OFFSET</constant>
 295                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 296                         The resulting index is converted to a set of color components
 297                         using the
 298                         <constant>GL_PIXEL_MAP_I_TO_R</constant>,
 299                         <constant>GL_PIXEL_MAP_I_TO_G</constant>,
 300                         <constant>GL_PIXEL_MAP_I_TO_B</constant>, and
 301                         <constant>GL_PIXEL_MAP_I_TO_A</constant> tables,
 302                         and clamped to the range [0,1].
 303                     </para>
 304                 </listitem>
 305             </varlistentry>
 306             <varlistentry>
 307                 <term><constant>GL_RED</constant></term>
 308                 <listitem>
 309                     <para>
 310                         Each element is a single red component.
 311                         The GL converts it to floating point and assembles it into an RGBA element
 312                         by attaching 0 for green and blue, and 1 for alpha.
 313                         Each component is then multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 314                         added to the signed bias <constant>GL_c_BIAS</constant>,
 315                         and clamped to the range [0,1]
 316                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 317                     </para>
 318                 </listitem>
 319             </varlistentry>
 320             <varlistentry>
 321                 <term><constant>GL_GREEN</constant></term>
 322                 <listitem>
 323                     <para>
 324                         Each element is a single green component.
 325                         The GL converts it to floating point and assembles it into an RGBA element
 326                         by attaching 0 for red and blue, and 1 for alpha.
 327                         Each component is then multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 328                         added to the signed bias <constant>GL_c_BIAS</constant>,
 329                         and clamped to the range [0,1]
 330                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 331                     </para>
 332                 </listitem>
 333             </varlistentry>
 334             <varlistentry>
 335                 <term><constant>GL_BLUE</constant></term>
 336                 <listitem>
 337                     <para>
 338                         Each element is a single blue component.
 339                         The GL converts it to floating point and assembles it into an RGBA element
 340                         by attaching 0 for red and green, and 1 for alpha.
 341                         Each component is then multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 342                         added to the signed bias <constant>GL_c_BIAS</constant>,
 343                         and clamped to the range [0,1]
 344                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 345                     </para>
 346                 </listitem>
 347             </varlistentry>
 348             <varlistentry>
 349                 <term><constant>GL_ALPHA</constant></term>
 350                 <listitem>
 351                     <para>
 352                         Each element is a single alpha component.
 353                         The GL converts it to floating point and assembles it into an RGBA element
 354                         by attaching 0 for red, green, and blue.
 355                         Each component is then multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 356                         added to the signed bias <constant>GL_c_BIAS</constant>,
 357                         and clamped to the range [0,1]
 358                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 359                     </para>
 360                 </listitem>
 361             </varlistentry>
 362             <varlistentry>
 363                 <term><constant>GL_INTENSITY</constant></term>
 364                 <listitem>
 365                     <para>
 366                         Each element is a single intensity value.
 367                         The GL converts it to floating point,
 368                         then assembles it into an RGBA element by replicating the intensity value
 369                         three times for red, green, blue, and alpha.
 370                         Each component is then multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 371                         added to the signed bias <constant>GL_c_BIAS</constant>,
 372                         and clamped to the range [0,1]
 373                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 374                     </para>
 375                 </listitem>
 376             </varlistentry>
 377             <varlistentry>
 378                 <term><constant>GL_RGB</constant></term>
 379                 <listitem>
 380                 </listitem>
 381             </varlistentry>
 382             <varlistentry>
 383                 <term><constant>GL_BGR</constant></term>
 384                 <listitem>
 385                     <para>
 386                         Each element is an RGB triple.
 387                         The GL converts it to floating point and assembles it into an RGBA element
 388                         by attaching 1 for alpha.
 389                         Each component is then multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 390                         added to the signed bias <constant>GL_c_BIAS</constant>,
 391                         and clamped to the range [0,1]
 392                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 393                     </para>
 394                 </listitem>
 395             </varlistentry>
 396             <varlistentry>
 397                 <term><constant>GL_RGBA</constant></term>
 398                 <listitem>
 399                 </listitem>
 400             </varlistentry>
 401             <varlistentry>
 402                 <term><constant>GL_BGRA</constant></term>
 403                 <listitem>
 404                     <para>
 405                         Each element contains all four components.
 406                         Each component is multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 407                         added to the signed bias <constant>GL_c_BIAS</constant>,
 408                         and clamped to the range [0,1]
 409                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 410                     </para>
 411                 </listitem>
 412             </varlistentry>
 413             <varlistentry>
 414                 <term><constant>GL_LUMINANCE</constant></term>
 415                 <listitem>
 416                     <para>
 417                         Each element is a single luminance value.
 418                         The GL converts it to floating point,
 419                         then assembles it into an RGBA element by replicating the luminance value
 420                         three times for red, green, and blue and attaching 1 for alpha.
 421                         Each component is then multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 422                         added to the signed bias <constant>GL_c_BIAS</constant>,
 423                         and clamped to the range [0,1]
 424                         (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 425                     </para>
 426                 </listitem>
 427             </varlistentry>
 428             <varlistentry>
 429                 <term><constant>GL_LUMINANCE_ALPHA</constant></term>
 430                 <listitem>
 431                     <para>
 432                         Each element is a luminance/alpha pair.
 433                         The GL converts it to floating point,
 434                         then assembles it into an RGBA element by replicating the luminance value
 435                         three times for red, green, and blue.
 436                         Each component is then multiplied by the signed scale factor <constant>GL_c_SCALE</constant>,
 437                         added to the signed bias <constant>GL_c_BIAS</constant>,
 438                         and clamped to the range [0,1] (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 439                     </para>
 440                 </listitem>
 441             </varlistentry>
 442             <varlistentry>
 443                 <term><constant>GL_DEPTH_COMPONENT</constant></term>
 444                 <listitem>
 445                     <para>
 446                         Each element is a single depth value.
 447                         The GL converts it to floating point, multiplies by the signed scale factor
 448                         <constant>GL_DEPTH_SCALE</constant>, adds the signed bias <constant>GL_DEPTH_BIAS</constant>,
 449                         and clamps to the range [0,1] (see <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>).
 450                     </para>
 451                 </listitem>
 452             </varlistentry>
 453         </variablelist>
 454         <para>
 455             Refer to the <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry> reference page for a description of
 456             the acceptable values for the <parameter>type</parameter> parameter.
 457         </para>
 458         <para>
 459             If an application wants to store the texture at a certain
 460             resolution or in a certain format, it can request the resolution
 461             and format with <parameter>internalFormat</parameter>. The GL will choose an internal
 462             representation that closely approximates that requested by <parameter>internalFormat</parameter>, but
 463             it may not match exactly.
 464             (The representations specified by <constant>GL_LUMINANCE</constant>,
 465             <constant>GL_LUMINANCE_ALPHA</constant>, <constant>GL_RGB</constant>,
 466             and <constant>GL_RGBA</constant> must match exactly. The numeric values 1, 2, 3, and 4
 467             may also be used to specify the above representations.)
 468         </para>
 469         <para>
 470                 If the <parameter>internalFormat</parameter> parameter is one of the generic compressed formats,
 471                 <constant>GL_COMPRESSED_ALPHA</constant>,
 472                 <constant>GL_COMPRESSED_INTENSITY</constant>,
 473                 <constant>GL_COMPRESSED_LUMINANCE</constant>,
 474                 <constant>GL_COMPRESSED_LUMINANCE_ALPHA</constant>,
 475                 <constant>GL_COMPRESSED_RGB</constant>, or
 476                 <constant>GL_COMPRESSED_RGBA</constant>, the GL will replace the internal format with the symbolic constant for a specific internal format and compress the texture before storage.  If no corresponding internal format is available, or the GL can not compress that image for any reason, the internal format is instead replaced with a corresponding base internal format.
 477         </para>
 478         <para>
 479             If the <parameter>internalFormat</parameter> parameter is
 480             <constant>GL_SRGB</constant>,
 481                         <constant>GL_SRGB8</constant>,
 482                         <constant>GL_SRGB_ALPHA</constant>,
 483                         <constant>GL_SRGB8_ALPHA8</constant>,
 484                         <constant>GL_SLUMINANCE</constant>,
 485                         <constant>GL_SLUMINANCE8</constant>,
 486                         <constant>GL_SLUMINANCE_ALPHA</constant>, or
 487                         <constant>GL_SLUMINANCE8_ALPHA8</constant>, the texture is treated as if the red, green, blue, or luminance components are encoded in the sRGB color space.    Any alpha component is left unchanged.  The conversion from the sRGB encoded component
 488                         <inlineequation><mml:math>
 489                     <mml:msub><mml:mi mathvariant="italic">c</mml:mi>
 490                     <mml:mi mathvariant="italic">s</mml:mi>
 491                     </mml:msub>
 492             </mml:math></inlineequation>
 493                         to a linear component
 494                         <inlineequation><mml:math>
 495                     <mml:msub><mml:mi mathvariant="italic">c</mml:mi>
 496                     <mml:mi mathvariant="italic">l</mml:mi>
 497                     </mml:msub>
 498             </mml:math></inlineequation>
 499             is:
 500                 </para>
 501                 <para>
 502                         <inlineequation><mml:math>
 503                         <mml:mrow>
 504                                 <mml:msub>
 505                                   <mml:mi mathvariant="italic">c</mml:mi>
 506                                   <mml:mi mathvariant="italic">l</mml:mi>
 507                                 </mml:msub>
 508                                 <mml:mo>=</mml:mo>
 509                                 <mml:mrow>
 510                                   <mml:mo>{</mml:mo>
 511
 512                                   <mml:mtable columnalign="left">
 513                                         <mml:mtr>
 514                                           <mml:mtd columnalign="left">
 515                                                 <mml:mfrac>
 516                                                   <mml:msub>
 517                                                         <mml:mi mathvariant="italic">c</mml:mi>
 518                                                         <mml:mi mathvariant="italic">s</mml:mi>
 519                                                   </mml:msub>
 520                                                   <mml:mn>12.92</mml:mn>
 521                                                 </mml:mfrac>
 522                                           </mml:mtd>
 523                                           <mml:mtd columnalign="left">
 524                                                 <mml:mrow>
 525                                                   <mml:mspace width="1ex"/>
 526                                                   <mml:mo>if</mml:mo>
 527                                                   <mml:mspace width="1ex"/>
 528                                                 </mml:mrow>
 529                                                 <mml:msub>
 530                                                   <mml:mi mathvariant="italic">c</mml:mi>
 531                                                   <mml:mi mathvariant="italic">s</mml:mi>
 532                                                 </mml:msub>
 533                                                 <mml:mo>&le;</mml:mo>
 534                                                 <mml:mn>0.04045</mml:mn>
 535                                           </mml:mtd>
 536                                         </mml:mtr>
 537                                         <mml:mtr>
 538                                         <mml:mtd columnalign="left">
 539                                         <mml:msup>
 540                                           <mml:mrow>
 541                                                 <mml:mo>(</mml:mo>
 542                                                 <mml:mfrac>
 543                                                   <mml:mrow>
 544                                                         <mml:msub>
 545                                                           <mml:mi>c</mml:mi>
 546                                                           <mml:mi>s</mml:mi>
 547                                                         </mml:msub>
 548                                                         <mml:mo>+</mml:mo>
 549                                                         <mml:mn>0.055</mml:mn>
 550                                                   </mml:mrow>
 551                                                   <mml:mn>1.055</mml:mn>
 552                                                 </mml:mfrac>
 553                                                 <mml:mo>)</mml:mo>
 554                                           </mml:mrow>
 555                                           <mml:mn>2.4</mml:mn>
 556                                         </mml:msup>
 557                                         </mml:mtd>
 558                                   <mml:mtd columnalign="left">
 559                                                 <mml:mrow>
 560                                                   <mml:mspace width="1ex"/>
 561                                                   <mml:mo>if</mml:mo>
 562                                                   <mml:mspace width="1ex"/>
 563                                                 </mml:mrow>
 564                                                 <mml:msub>
 565                                                   <mml:mi mathvariant="italic">c</mml:mi>
 566                                                   <mml:mi mathvariant="italic">s</mml:mi>
 567                                                 </mml:msub>
 568                                                 <mml:mo>&gt;</mml:mo>
 569                                                 <mml:mn>0.04045</mml:mn>
 570                                           </mml:mtd>
 571                                         </mml:mtr>
 572                                   </mml:mtable>
 573                                 </mml:mrow>
 574                                 </mml:mrow>
 575                         </mml:math>
 576                         </inlineequation>
 577                 </para>
 578                 <para>
 579                         Assume
 580                         <inlineequation><mml:math>
 581                                                                 <mml:msub><mml:mi mathvariant="italic">c</mml:mi>
 582                                                                 <mml:mi mathvariant="italic">s</mml:mi>
 583                                                                 </mml:msub>
 584                                                 </mml:math></inlineequation>
 585                         is the sRGB component in the range [0,1].
 586        </para>
 587         <para>
 588             Use the <constant>GL_PROXY_TEXTURE_1D</constant> target to try out a resolution and
 589             format. The implementation will
 590             update and recompute its best match for the requested storage resolution
 591             and format. To then query this state, call <citerefentry><refentrytitle>glGetTexLevelParameter</refentrytitle></citerefentry>.
 592             If the texture cannot be accommodated, texture state is set to 0.
 593         </para>
 594         <para>
 595             A one-component texture image uses only the red component of the RGBA
 596             color from <parameter>data</parameter>.
 597             A two-component image uses the R and A values.
 598             A three-component image uses the R, G, and B values.
 599             A four-component image uses all of the RGBA components.
 600         </para>
 601         <para>
 602                         Depth textures can be treated as LUMINANCE, INTENSITY or ALPHA textures during texture filtering and application. Image-based shadowing can be enabled by comparing texture r coordinates to depth texture values to generate a boolean result.  See <citerefentry><refentrytitle>glTexParameter</refentrytitle></citerefentry> for details on texture comparison.
 603         </para>
 604     </refsect1>
 605     <refsect1 id="notes"><title>Notes</title>
 606         <para>
 607             Texturing has no effect in color index mode.
 608         </para>
 609         <para>
 610             If the <code>ARB_imaging</code> extension is supported, RGBA elements may
 611             also be processed by the imaging pipeline.  The following stages may be
 612             applied to an RGBA color before color component clamping to the range
 613             <inlineequation><mml:math>
 614                 <!-- eqn: [0,1]:-->
 615                 <mml:mfenced open="[" close="]">
 616                     <mml:mn>0</mml:mn>
 617                     <mml:mn>1</mml:mn>
 618                 </mml:mfenced>
 619             </mml:math></inlineequation>:
 620         </para>
 621         <variablelist>
 622             <varlistentry>
 623                 <term>1. Color component replacement by the color table specified for</term>
 624                 <listitem>
 625                     <para>
 626                         <constant>GL_COLOR_TABLE</constant>, if enabled. See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
 627                     </para>
 628                 </listitem>
 629             </varlistentry>
 630             <varlistentry>
 631                 <term>2. One-dimensional convolution filtering, if enabled. See</term>
 632                 <listitem>
 633                     <para>
 634                         <citerefentry><refentrytitle>glConvolutionFilter1D</refentrytitle></citerefentry>.
 635                     </para>
 636                     <para>
 637                         If a convolution filter changes the <parameter>width</parameter> of the texture (by
 638                         processing with a <constant>GL_CONVOLUTION_BORDER_MODE</constant> of <constant>GL_REDUCE</constant>, for
 639                         example), the <parameter>width</parameter> must
 640                         <inlineequation><mml:math>
 641                             <!-- eqn: 2 sup n + 2 ( border ):-->
 642                             <mml:mrow>
 643                                 <mml:msup><mml:mn>2</mml:mn>
 644                                 <mml:mi mathvariant="italic">n</mml:mi>
 645                                 </mml:msup>
 646                                 <mml:mo>+</mml:mo>
 647                                 <mml:mrow>
 648                                     <mml:mn>2</mml:mn>
 649                                     <mml:mo>&af;</mml:mo>
 650                                     <mml:mfenced open="(" close=")">
 651                                         <mml:mi mathvariant="italic">border</mml:mi>
 652                                     </mml:mfenced>
 653                                 </mml:mrow>
 654                             </mml:mrow>
 655                         </mml:math></inlineequation>,
 656                         for some
 657                         integer
 658                         <inlineequation><mml:math><mml:mi mathvariant="italic">n</mml:mi></mml:math></inlineequation>,
 659                         after filtering.
 660                     </para>
 661                 </listitem>
 662             </varlistentry>
 663             <varlistentry>
 664                 <term>3. RGBA components may be multiplied by <constant>GL_POST_CONVOLUTION_c_SCALE</constant>,</term>
 665                 <listitem>
 666                     <para>
 667                         and added to <constant>GL_POST_CONVOLUTION_c_BIAS</constant>, if enabled.  See
 668                         <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
 669                     </para>
 670                 </listitem>
 671             </varlistentry>
 672             <varlistentry>
 673                 <term>4. Color component replacement by the color table specified for</term>
 674                 <listitem>
 675                     <para>
 676                         <constant>GL_POST_CONVOLUTION_COLOR_TABLE</constant>, if enabled.  See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
 677                     </para>
 678                 </listitem>
 679             </varlistentry>
 680             <varlistentry>
 681                 <term>5. Transformation by the color matrix.</term>
 682                 <listitem>
 683                     <para>
 684                         See <citerefentry><refentrytitle>glMatrixMode</refentrytitle></citerefentry>.
 685                     </para>
 686                 </listitem>
 687             </varlistentry>
 688             <varlistentry>
 689                 <term>6. RGBA components may be multiplied by <constant>GL_POST_COLOR_MATRIX_c_SCALE</constant>,</term>
 690                 <listitem>
 691                     <para>
 692                         and added to <constant>GL_POST_COLOR_MATRIX_c_BIAS</constant>, if enabled.  See
 693                         <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
 694                     </para>
 695                 </listitem>
 696             </varlistentry>
 697             <varlistentry>
 698                 <term>7. Color component replacement by the color table specified for</term>
 699                 <listitem>
 700                     <para>
 701                         <constant>GL_POST_COLOR_MATRIX_COLOR_TABLE</constant>, if enabled.  See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
 702                     </para>
 703                 </listitem>
 704             </varlistentry>
 705         </variablelist>
 706         <para>
 707             The texture image can be represented by the same data formats
 708             as the pixels in a <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry> command,
 709             except that <constant>GL_STENCIL_INDEX</constant>
 710             cannot be used.
 711             <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry> modes affect texture images
 712             in exactly the way they affect <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>.
 713         </para>
 714         <para>
 715             <constant>GL_PROXY_TEXTURE_1D</constant> may be used only if the GL version is 1.1 or greater.
 716         </para>
 717         <para>
 718             Internal formats other than 1, 2, 3, or 4 may be
 719             used only if the GL version is 1.1 or greater.
 720         </para>
 721         <para>
 722             In GL version 1.1 or greater,
 723             <parameter>data</parameter> may be a null pointer. In this case texture memory is
 724             allocated to accommodate a texture of width <parameter>width</parameter>.
 725             You can then download subtextures to initialize the
 726             texture memory. The image is undefined if the program tries to apply
 727             an uninitialized portion of the texture image to a primitive.
 728         </para>
 729         <para>
 730             Formats <constant>GL_BGR</constant>, and <constant>GL_BGRA</constant> and types
 731             <constant>GL_UNSIGNED_BYTE_3_3_2</constant>,
 732             <constant>GL_UNSIGNED_BYTE_2_3_3_REV</constant>,
 733             <constant>GL_UNSIGNED_SHORT_5_6_5</constant>,
 734             <constant>GL_UNSIGNED_SHORT_5_6_5_REV</constant>,
 735             <constant>GL_UNSIGNED_SHORT_4_4_4_4</constant>,
 736             <constant>GL_UNSIGNED_SHORT_4_4_4_4_REV</constant>,
 737             <constant>GL_UNSIGNED_SHORT_5_5_5_1</constant>,
 738             <constant>GL_UNSIGNED_SHORT_1_5_5_5_REV</constant>,
 739             <constant>GL_UNSIGNED_INT_8_8_8_8</constant>,
 740             <constant>GL_UNSIGNED_INT_8_8_8_8_REV</constant>,
 741             <constant>GL_UNSIGNED_INT_10_10_10_2</constant>, and
 742             <constant>GL_UNSIGNED_INT_2_10_10_10_REV</constant> are available only if the GL version
 743             is 1.2 or greater.
 744         </para>
 745         <para>
 746             When the <code>ARB_multitexture</code> extension is supported, or the GL version is 1.3 or greater, <function>glTexImage1D</function>
 747             specifies the one-dimensional texture for the current texture unit,
 748             specified with <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>.
 749         </para>
 750         <para>
 751             <constant>GL_DEPTH_COMPONENT</constant>, <constant>GL_DEPTH_COMPONENT16</constant>,
 752             <constant>GL_DEPTH_COMPONENT24</constant>, and <constant>GL_DEPTH_COMPONENT32</constant> are available only
 753             if the GL version is 1.4 or greater.
 754         </para>
 755         <para>
 756                         Non-power-of-two textures are supported if the GL version is 2.0 or greater, or if the implementation exports the <constant>GL_ARB_texture_non_power_of_two</constant> extension.
 757         </para>
 758         <para>
 759             The
 760                         <constant>GL_SRGB</constant>,
 761                         <constant>GL_SRGB8</constant>,
 762                         <constant>GL_SRGB_ALPHA</constant>,
 763                         <constant>GL_SRGB8_ALPHA8</constant>,
 764                         <constant>GL_SLUMINANCE</constant>,
 765                         <constant>GL_SLUMINANCE8</constant>,
 766                         <constant>GL_SLUMINANCE_ALPHA</constant>, and
 767                         <constant>GL_SLUMINANCE8_ALPHA8</constant>
 768                         internal formats are only available if the GL version is 2.1 or greater.
 769         </para>
 770     </refsect1>
 771     <refsect1 id="errors"><title>Errors</title>
 772         <para>
 773             <constant>GL_INVALID_ENUM</constant> is generated if <parameter>target</parameter> is not <constant>GL_TEXTURE_1D</constant>
 774             or <constant>GL_PROXY_TEXTURE_1D</constant>.
 775         </para>
 776         <para>
 777             <constant>GL_INVALID_ENUM</constant> is generated if <parameter>format</parameter> is not an accepted
 778             format constant.  Format constants other than <constant>GL_STENCIL_INDEX</constant>
 779             are accepted.
 780         </para>
 781         <para>
 782             <constant>GL_INVALID_ENUM</constant> is generated if <parameter>type</parameter> is not a type constant.
 783         </para>
 784         <para>
 785             <constant>GL_INVALID_ENUM</constant> is generated if <parameter>type</parameter> is <constant>GL_BITMAP</constant> and
 786             <parameter>format</parameter> is not <constant>GL_COLOR_INDEX</constant>.
 787         </para>
 788         <para>
 789             <constant>GL_INVALID_VALUE</constant> is generated if <parameter>level</parameter> is less than 0.
 790         </para>
 791         <para>
 792             <constant>GL_INVALID_VALUE</constant> may be generated if <parameter>level</parameter> is greater than
 793             <inlineequation><mml:math>
 794                 <!-- eqn: log sub 2 (max):-->
 795                 <mml:mrow>
 796                     <mml:msub><mml:mi mathvariant="italic">log</mml:mi>
 797                     <mml:mn>2</mml:mn>
 798                     </mml:msub>
 799                     <mml:mo>&af;</mml:mo>
 800                     <mml:mfenced open="(" close=")">
 801                         <mml:mi mathvariant="italic">max</mml:mi>
 802                     </mml:mfenced>
 803                 </mml:mrow>
 804             </mml:math></inlineequation>,
 805             where <emphasis>max</emphasis> is the returned value of <constant>GL_MAX_TEXTURE_SIZE</constant>.
 806         </para>
 807         <para>
 808             <constant>GL_INVALID_VALUE</constant> is generated if <parameter>internalFormat</parameter> is not 1, 2, 3, 4, or
 809             one of the accepted resolution and format symbolic constants.
 810         </para>
 811         <para>
 812             <constant>GL_INVALID_VALUE</constant> is generated if <parameter>width</parameter> is less than 0
 813             or greater than 2 + <constant>GL_MAX_TEXTURE_SIZE</constant>.
 814         </para>
 815         <para>
 816                         <constant>GL_INVALID_VALUE</constant> is generated if non-power-of-two textures are not supported and the <parameter>width</parameter> cannot be represented as
 817                         <inlineequation><mml:math>
 818                 <!-- eqn: 2 sup n  +  2(border):-->
 819                 <mml:mrow>
 820                     <mml:msup><mml:mn>2</mml:mn>
 821                     <mml:mi mathvariant="italic">n</mml:mi>
 822                     </mml:msup>
 823                     <mml:mo>+</mml:mo>
 824                     <mml:mrow>
 825                         <mml:mn>2</mml:mn>
 826                         <mml:mo>&af;</mml:mo>
 827                         <mml:mfenced open="(" close=")">
 828                             <mml:mi mathvariant="italic">border</mml:mi>
 829                         </mml:mfenced>
 830                     </mml:mrow>
 831                 </mml:mrow>
 832             </mml:math></inlineequation>
 833             for some integer value of <emphasis>n</emphasis>.
 834         </para>
 835         <para>
 836             <constant>GL_INVALID_VALUE</constant> is generated if <parameter>border</parameter> is not 0 or 1.
 837         </para>
 838         <para>
 839             <constant>GL_INVALID_OPERATION</constant> is generated if <parameter>type</parameter> is one of
 840             <constant>GL_UNSIGNED_BYTE_3_3_2</constant>,
 841             <constant>GL_UNSIGNED_BYTE_2_3_3_REV</constant>,
 842             <constant>GL_UNSIGNED_SHORT_5_6_5</constant>, or
 843             <constant>GL_UNSIGNED_SHORT_5_6_5_REV</constant>
 844             and <parameter>format</parameter> is not <constant>GL_RGB</constant>.
 845         </para>
 846         <para>
 847             <constant>GL_INVALID_OPERATION</constant> is generated if <parameter>type</parameter> is one of
 848             <constant>GL_UNSIGNED_SHORT_4_4_4_4</constant>,
 849             <constant>GL_UNSIGNED_SHORT_4_4_4_4_REV</constant>,
 850             <constant>GL_UNSIGNED_SHORT_5_5_5_1</constant>,
 851             <constant>GL_UNSIGNED_SHORT_1_5_5_5_REV</constant>,
 852             <constant>GL_UNSIGNED_INT_8_8_8_8</constant>,
 853             <constant>GL_UNSIGNED_INT_8_8_8_8_REV</constant>,
 854             <constant>GL_UNSIGNED_INT_10_10_10_2</constant>, or
 855             <constant>GL_UNSIGNED_INT_2_10_10_10_REV</constant>
 856             and <parameter>format</parameter> is neither <constant>GL_RGBA</constant> nor <constant>GL_BGRA</constant>.
 857         </para>
 858         <para>
 859             <constant>GL_INVALID_OPERATION</constant> is generated if <parameter>format</parameter> is
 860             <constant>GL_DEPTH_COMPONENT</constant> and <parameter>internalFormat</parameter> is not
 861             <constant>GL_DEPTH_COMPONENT</constant>, <constant>GL_DEPTH_COMPONENT16</constant>,
 862             <constant>GL_DEPTH_COMPONENT24</constant>, or <constant>GL_DEPTH_COMPONENT32</constant>.
 863         </para>
 864         <para>
 865             <constant>GL_INVALID_OPERATION</constant> is generated if <parameter>internalFormat</parameter> is
 866             <constant>GL_DEPTH_COMPONENT</constant>, <constant>GL_DEPTH_COMPONENT16</constant>,
 867             <constant>GL_DEPTH_COMPONENT24</constant>, or <constant>GL_DEPTH_COMPONENT32</constant>, and <parameter>format</parameter> is
 868             not <constant>GL_DEPTH_COMPONENT</constant>.
 869         </para>
 870         <para>
 871             <constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
 872             <constant>GL_PIXEL_UNPACK_BUFFER</constant> target and the buffer object's data store is currently mapped.
 873         </para>
 874         <para>
 875             <constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
 876             <constant>GL_PIXEL_UNPACK_BUFFER</constant> target and the data would be unpacked from the buffer
 877             object such that the memory reads required would exceed the data store size.
 878         </para>
 879         <para>
 880             <constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
 881             <constant>GL_PIXEL_UNPACK_BUFFER</constant> target and <parameter>data</parameter> is not evenly divisible
 882             into the number of bytes needed to store in memory a datum indicated by <parameter>type</parameter>.
 883         </para>
 884         <para>
 885             <constant>GL_INVALID_OPERATION</constant> is generated if <function>glTexImage1D</function>
 886             is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>
 887             and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
 888         </para>
 889     </refsect1>
 890     <refsect1 id="associatedgets"><title>Associated Gets</title>
 891         <para>
 892             <citerefentry><refentrytitle>glGetTexImage</refentrytitle></citerefentry>
 893         </para>
 894         <para>
 895             <citerefentry><refentrytitle>glIsEnabled</refentrytitle></citerefentry> with argument <constant>GL_TEXTURE_1D</constant>
 896         </para>
 897         <para>
 898             <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_PIXEL_UNPACK_BUFFER_BINDING</constant>
 899         </para>
 900     </refsect1>
 901     <refsect1 id="seealso"><title>See Also</title>
 902         <para>
 903             <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>,
 904             <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>,
 905             <citerefentry><refentrytitle>glCompressedTexImage1D</refentrytitle></citerefentry>,
 906             <citerefentry><refentrytitle>glCompressedTexSubImage1D</refentrytitle></citerefentry>,
 907             <citerefentry><refentrytitle>glConvolutionFilter1D</refentrytitle></citerefentry>,
 908             <citerefentry><refentrytitle>glCopyPixels</refentrytitle></citerefentry>,
 909             <citerefentry><refentrytitle>glCopyTexImage1D</refentrytitle></citerefentry>,
 910             <citerefentry><refentrytitle>glCopyTexSubImage1D</refentrytitle></citerefentry>,
 911             <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>,
 912             <citerefentry><refentrytitle>glGetCompressedTexImage</refentrytitle></citerefentry>,
 913             <citerefentry><refentrytitle>glMatrixMode</refentrytitle></citerefentry>,
 914             <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>,
 915             <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>,
 916             <citerefentry><refentrytitle>glTexEnv</refentrytitle></citerefentry>,
 917             <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>,
 918             <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>,
 919             <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>,
 920             <citerefentry><refentrytitle>glTexSubImage1D</refentrytitle></citerefentry>,
 921             <citerefentry><refentrytitle>glTexSubImage2D</refentrytitle></citerefentry>,
 922             <citerefentry><refentrytitle>glTexSubImage3D</refentrytitle></citerefentry>,
 923             <citerefentry><refentrytitle>glTexParameter</refentrytitle></citerefentry>
 924         </para>
 925     </refsect1>
 926     <refsect1 id="Copyright"><title>Copyright</title>
 927         <para>
 928             Copyright <trademark class="copyright"></trademark> 1991-2006
 929             Silicon Graphics, Inc. This document is licensed under the SGI
 930             Free Software B License. For details, see
 931             <ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
 932         </para>
 933     </refsect1>
 934 </refentry>