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<h1>FX::FXGLContext Class Reference</h1>A GL context is an object representing the OpenGL state information.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="FXGLContext_8h-source.html">FXGLContext.h</a>></code>
<p>
<p>Inheritance diagram for FX::FXGLContext:
<p><center><img src="classFX_1_1FXGLContext.png" usemap="#FX::FXGLContext_map" border="0" alt=""></center>
<map name="FX::FXGLContext_map">
<area href="classFX_1_1FXId.html" alt="FX::FXId" shape="rect" coords="0,56,110,80">
<area href="classFX_1_1FXObject.html" alt="FX::FXObject" shape="rect" coords="0,0,110,24">
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<a href="classFX_1_1FXGLContext-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
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<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a0">FXGLContext</a> (<a class="el" href="classFX_1_1FXApp.html">FXApp</a> *a, <a class="el" href="classFX_1_1FXGLVisual.html">FXGLVisual</a> *vis)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a1">FXGLContext</a> (<a class="el" href="classFX_1_1FXApp.html">FXApp</a> *a, <a class="el" href="classFX_1_1FXGLVisual.html">FXGLVisual</a> *vis, <a class="el" href="classFX_1_1FXGLContext.html">FXGLContext</a> *shared)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>FXbool </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a2">isShared</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a class="el" href="classFX_1_1FXGLVisual.html">FXGLVisual</a> * </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a3">getVisual</a> () const</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a4">create</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a5">detach</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a6">destroy</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>FXbool </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a7">begin</a> (<a class="el" href="classFX_1_1FXDrawable.html">FXDrawable</a> *drawable)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>FXbool </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a8">end</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a9">swapBuffers</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a10">swapSubBuffers</a> (FXint x, FXint y, FXint w, FXint h)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a11">save</a> (<a class="el" href="classFX_1_1FXStream.html">FXStream</a> &store) const</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a12">load</a> (<a class="el" href="classFX_1_1FXStream.html">FXStream</a> &store)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual </td><td class="memItemRight" valign=bottom><a class="el" href="classFX_1_1FXGLContext.html#a13">~FXGLContext</a> ()</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
A GL context is an object representing the OpenGL state information.
<p>
Multiple GL context may share display lists to conserve memory. When drawing multiple windows, it may be advantageous to share not only display lists, but also GL contexts. Since the GL context is created for a certain frame-buffer configuration, sharing of GL contexts is only possible if the windows sharing the GL context all have the same GL visual. However, display lists may be shared between different GL contexts.
<p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a name="a0" doxytag="FX::FXGLContext::FXGLContext"></a><p>
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<td class="md" nowrap valign="top"> FX::FXGLContext::FXGLContext </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classFX_1_1FXApp.html">FXApp</a> * </td>
<td class="mdname" nowrap> <em>a</em>, </td>
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<td class="md" nowrap><a class="el" href="classFX_1_1FXGLVisual.html">FXGLVisual</a> * </td>
<td class="mdname" nowrap> <em>vis</em></td>
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<td class="md">) </td>
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Construct an OpenGL context with its own private display list.
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<a name="a1" doxytag="FX::FXGLContext::FXGLContext"></a><p>
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<td class="md" nowrap valign="top"> FX::FXGLContext::FXGLContext </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classFX_1_1FXApp.html">FXApp</a> * </td>
<td class="mdname" nowrap> <em>a</em>, </td>
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<td class="md" nowrap><a class="el" href="classFX_1_1FXGLVisual.html">FXGLVisual</a> * </td>
<td class="mdname" nowrap> <em>vis</em>, </td>
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<td></td>
<td class="md" nowrap><a class="el" href="classFX_1_1FXGLContext.html">FXGLContext</a> * </td>
<td class="mdname" nowrap> <em>shared</em></td>
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<td class="md">) </td>
<td class="md" colspan="2"></td>
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<p>
Construct an OpenGL context sharing display lists with an existing GL context.
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<a name="a13" doxytag="FX::FXGLContext::~FXGLContext"></a><p>
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<td class="md" nowrap valign="top"> virtual FX::FXGLContext::~<a class="el" href="classFX_1_1FXGLContext.html">FXGLContext</a> </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
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Destructor.
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<hr><h2>Member Function Documentation</h2>
<a name="a2" doxytag="FX::FXGLContext::isShared"></a><p>
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<td class="md" nowrap valign="top"> FXbool FX::FXGLContext::isShared </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const</td>
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Return TRUE if it is sharing display lists.
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<a name="a3" doxytag="FX::FXGLContext::getVisual"></a><p>
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<td class="md" nowrap valign="top"> <a class="el" href="classFX_1_1FXGLVisual.html">FXGLVisual</a>* FX::FXGLContext::getVisual </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [inline]</code></td>
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Get the visual.
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<a name="a4" doxytag="FX::FXGLContext::create"></a><p>
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<td class="md" nowrap valign="top"> virtual void FX::FXGLContext::create </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
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Create context.
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<p>
Reimplemented from <a class="el" href="classFX_1_1FXId.html#a2">FX::FXId</a>. </td>
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<a name="a5" doxytag="FX::FXGLContext::detach"></a><p>
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<td class="md" nowrap valign="top"> virtual void FX::FXGLContext::detach </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
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Detach the server-side resources for this window.
<p>
<p>
Reimplemented from <a class="el" href="classFX_1_1FXId.html#a3">FX::FXId</a>. </td>
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<a name="a6" doxytag="FX::FXGLContext::destroy"></a><p>
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<td class="md" nowrap valign="top"> virtual void FX::FXGLContext::destroy </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
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Destroy the server-side resources for this window.
<p>
<p>
Reimplemented from <a class="el" href="classFX_1_1FXId.html#a4">FX::FXId</a>. </td>
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<a name="a7" doxytag="FX::FXGLContext::begin"></a><p>
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<td class="md" nowrap valign="top"> FXbool FX::FXGLContext::begin </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classFX_1_1FXDrawable.html">FXDrawable</a> * </td>
<td class="mdname1" valign="top" nowrap> <em>drawable</em> </td>
<td class="md" valign="top"> ) </td>
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Make OpenGL context current prior to performing OpenGL commands.
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<a name="a8" doxytag="FX::FXGLContext::end"></a><p>
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<td class="md" nowrap valign="top"> FXbool FX::FXGLContext::end </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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Make OpenGL context non current.
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<a name="a9" doxytag="FX::FXGLContext::swapBuffers"></a><p>
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<td class="md" nowrap valign="top"> void FX::FXGLContext::swapBuffers </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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Swap front and back buffer.
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<a name="a10" doxytag="FX::FXGLContext::swapSubBuffers"></a><p>
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<td class="md" nowrap valign="top"> void FX::FXGLContext::swapSubBuffers </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">FXint </td>
<td class="mdname" nowrap> <em>x</em>, </td>
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<td class="md" nowrap>FXint </td>
<td class="mdname" nowrap> <em>y</em>, </td>
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<td class="md" nowrap>FXint </td>
<td class="mdname" nowrap> <em>w</em>, </td>
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<td class="md" nowrap>FXint </td>
<td class="mdname" nowrap> <em>h</em></td>
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<td class="md">) </td>
<td class="md" colspan="2"></td>
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Copy part of backbuffer to front buffer [Mesa].
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<a name="a11" doxytag="FX::FXGLContext::save"></a><p>
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<td class="md" nowrap valign="top"> virtual void FX::FXGLContext::save </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classFX_1_1FXStream.html">FXStream</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>store</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [virtual]</code></td>
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Save object to stream.
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Reimplemented from <a class="el" href="classFX_1_1FXId.html#a7">FX::FXId</a>. </td>
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<a name="a12" doxytag="FX::FXGLContext::load"></a><p>
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<td class="md" nowrap valign="top"> virtual void FX::FXGLContext::load </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classFX_1_1FXStream.html">FXStream</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>store</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
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Load object from stream.
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<p>
Reimplemented from <a class="el" href="classFX_1_1FXId.html#a8">FX::FXId</a>. </td>
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