upstream-man-pages/man4/removedTypes.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
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   4 <refentry id="removedTypes">
   5     <refmeta>
   6         <refmetainfo>
   7             <copyright>
   8                 <year>2012</year>
   9                 <holder>Khronos Group</holder>
  10             </copyright>
  11         </refmetainfo>
  12         <refentrytitle>removedTypes</refentrytitle>
  13         <manvolnum>3G</manvolnum>
  14     </refmeta>
  15     <refnamediv>
  16         <refname>removedTypes</refname>
  17         <refpurpose>Describes types removed and replaced in the OpenGL API in OpenGL 4.2</refpurpose>
  18     </refnamediv>
  19     <refsect1 id="description"><title>Description</title>
  20         <para>
  21             In the May, 2012 update of the OpenGL 4.2 Specification, all
  22             APIs using the types GLclampf and GLclampd were modified to
  23             use GLfloat and GLdouble, respectively, instead. Language
  24             was added to the Specification requiring that these
  25             parameters be clamped, when required, at use time rather
  26             than at specification time.
  27         </para>
  28         <para>
  29             This change allows specifying parameters in ranges
  30             appropriate for non-fixed-point framebuffers (integer and
  31             floating-point formats). The change does not require any
  32             changes to user code calling these functions, because the
  33             actual underlying types are identical, the behavior is
  34             externally unchanged, and the header files continue to
  35             define the old types for compatibility with older code.
  36         </para>
  37     </refsect1>
  38     <refsect1 id="seealso"><title>See Also</title>
  39         <para>
  40             <citerefentry><refentrytitle>glBlendColor</refentrytitle></citerefentry>,
  41             <citerefentry><refentrytitle>glClearColor</refentrytitle></citerefentry>,
  42             <citerefentry><refentrytitle>glClearDepth</refentrytitle></citerefentry>,
  43             <citerefentry><refentrytitle>glDepthRange</refentrytitle></citerefentry>,
  44             <citerefentry><refentrytitle>glDepthRangeArray</refentrytitle></citerefentry>,
  45             <citerefentry><refentrytitle>glDepthRangeIndexed</refentrytitle></citerefentry>,
  46             <citerefentry><refentrytitle>glMinSampleShading</refentrytitle></citerefentry>,
  47             <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>
  48         </para>
  49     </refsect1>
  50     <refsect1 id="Copyright"><title>Copyright</title>
  51         <para>
  52             Copyright <trademark class="copyright"></trademark> 2012 Khronos Group.
  53             This material may be distributed subject to the terms and conditions set forth in
  54             the Open Publication License, v 1.0, 8 June 1999.
  55             <ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
  56         </para>
  57     </refsect1>
  58 </refentry>