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106 lines
4.8 KiB
106 lines
4.8 KiB
13 years ago
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<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/opengl/qgl.cpp:2250 -->
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<title>TQt OpenGL 3D Graphics</title>
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<font color="#004faf">Home</font></a>
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<font color="#004faf">All Classes</font></a>
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<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQt OpenGL 3D Graphics</h1>
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<p>
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<p>
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<p> <h2> Introduction
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</h2>
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<a name="1"></a><p> OpenGL is a standard API for rendering 3D graphics.
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<p> OpenGL only deals with 3D rendering and provides little or no support
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for GUI programming issues. The user interface for an
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OpenGL<sup>*</sup> application must be created with another toolkit,
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such as <a href="motif-extension.html#Motif">Motif</a> on the X platform, Microsoft Foundation Classes (MFC)
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under Windows, or TQt on <em>both</em> platforms.
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<p> The TQt OpenGL module makes it easy to use OpenGL in TQt applications.
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It provides an OpenGL widget class that can be used just like any
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other TQt widget, except that it opens an OpenGL display buffer where
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you can use the OpenGL API to render the contents.
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<p> The TQt OpenGL module is implemented as a platform-independent TQt/C++
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wrapper around the platform-dependent GLX, WGL, or AGL C APIs. The
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functionality provided is very similar to Mark Kilgard's GLUT library,
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but with much more non-OpenGL-specific GUI functionality, i.e. the
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whole TQt API.
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<p> <h2> Installation
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</h2>
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<a name="2"></a><p> When you install TQt for X11, the configure script will autodetect if
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OpenGL headers and libraries are installed on your system, and if so,
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it will include the TQt OpenGL module in the TQt library. (If your
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OpenGL headers or libraries are placed in a non-standard directory,
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you may need to change the QMAKE_INCDIR_OPENGL and/or
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QMAKE_LIBDIR_OPENGL in the config file for your system). Some
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configurations retquire threading to be enabled for OpenGL, so if
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OpenGL is not detected, try <tt>configure -thread</tt>.
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<p> When you install TQt for Windows, the TQt OpenGL module is always
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included.
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<p> The TQt OpenGL module is not licensed for use with the TQt Professional
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Edition. Consider upgrading to the TQt Enterprise Edition if you
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retquire OpenGL support.
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<p> Note about using Mesa on X11: Mesa versions earlier than 3.1 would use
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the name "MesaGL" and "MesaGLU" for the libraries, instead of "GL" and
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"GLU". If you want to use a pre-3.1 version of Mesa, you must change
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the Makefiles to use these library names instead. The easiest way to
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do this is to edit the QMAKE_LIBS_OPENGL line in the config file you
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are using, changing "-lGL -lGLU" to "-lMesaGL -lMesaGLU"; then run
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"configure" again.
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<p> <h2> The <a href="qgl.html">TQGL</a> Classes
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</h2>
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<a name="3"></a><p> The OpenGL support classes in TQt are:
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<ul>
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<li> <a href="qglwidget.html">TQGLWidget</a>: An easy-to-use TQt
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widget for rendering OpenGL scenes.
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<li> <a href="qglcontext.html">TQGLContext</a>: Encapsulates an OpenGL rendering context.
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<li> <a href="qglformat.html">TQGLFormat</a>: Specifies the
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display format of a rendering context.
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<li> <a href="qglcolormap.html">TQGLColormap</a>: Handles indexed
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colormaps in GL-index mode.
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</ul>
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<p> Many applications only need the high-level <a href="qglwidget.html">TQGLWidget</a> class. The other
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TQGL classes provide advanced features. X11 users might like to read
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the notes on <a href="opengl-x11-overlays.html">overlays</a>.
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<p> See also the <a href="opengl-examples.html">OpenGL examples</a>.
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<p> The TQGL documentation assumes that you are familiar with OpenGL
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programming. If you're new to the subject a good starting point is
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<a href="http://www.opengl.org/">http://www.opengl.org/</a>.
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<p> <sup>*</sup> OpenGL is a trademark of Silicon Graphics, Inc. in the
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United States and other countries.
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<p>
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<p><address><hr><div align=center>
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<td>Copyright © 2007
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<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a>
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<td align=right><div align=right>TQt 3.3.8</div>
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