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<title>OpenSceneGraph: osg::BlendFunc Class Reference</title>
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<li class="navelem"><a class="el" href="a01628.html">osg</a> </li>
<li class="navelem"><a class="el" href="a00059.html">BlendFunc</a> </li>
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<div class="title">osg::BlendFunc Class Reference</div> </div>
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<!-- doxytag: class="osg::BlendFunc" --><!-- doxytag: inherits="osg::StateAttribute" -->
<p>Encapsulates OpenGL blend/transparency state.
<a href="a00059.html#details">More...</a></p>
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Inheritance diagram for osg::BlendFunc:</div>
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<div class="center"><img src="a01697.png" border="0" usemap="#osg_1_1BlendFunc_inherit__map" alt="Inheritance graph"/></div>
<map name="osg_1_1BlendFunc_inherit__map" id="osg_1_1BlendFunc_inherit__map">
<area shape="rect" id="node2" href="a00743.html" title="Base class for state attributes." alt="" coords="5,160,163,189"/><area shape="rect" id="node4" href="a00500.html" title="Base class/standard interface for objects which require IO support, cloning and reference counting..." alt="" coords="33,83,135,112"/><area shape="rect" id="node6" href="a00627.html" title="Base class from providing referencing counted objects." alt="" coords="17,5,151,35"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="a01698.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="nested-classes"></a>
Classes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class  </td><td class="memItemRight" valign="bottom"><a class="el" href="a00272.html">Extensions</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Encapsulates queries of extension availability, obtains extension function pointers, and provides convenience wrappers for calling extension functions. <a href="a00272.html#details">More...</a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01">BlendFuncMode</a> { <br/>
  <a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a61a48f182081e2a52b99673c84f4521f">DST_ALPHA</a> = GL_DST_ALPHA,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a738ac043ff4400272c7d0e4b446ee52a">DST_COLOR</a> = GL_DST_COLOR,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01aa3d2e1ec202b12434c6f25012229c124">ONE</a> = GL_ONE,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a55b98ea6c0a1cf226cd0033e842a2ecc">ONE_MINUS_DST_ALPHA</a> = GL_ONE_MINUS_DST_ALPHA,
<br/>
  <a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a4b359af52d6f629285f0379854584ce8">ONE_MINUS_DST_COLOR</a> = GL_ONE_MINUS_DST_COLOR,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a387252f2ff0041b782050b1fd76273ea">ONE_MINUS_SRC_ALPHA</a> = GL_ONE_MINUS_SRC_ALPHA,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01aeb18b936b61ffaafe6d16d6a4843f91e">ONE_MINUS_SRC_COLOR</a> = GL_ONE_MINUS_SRC_COLOR,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a5c4f220243cbb55c1d4cbb636e68b09f">SRC_ALPHA</a> = GL_SRC_ALPHA,
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  <a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01ab76ff39e232bc0862fa3880e54fb4313">SRC_ALPHA_SATURATE</a> = GL_SRC_ALPHA_SATURATE,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a0988ba56addc1dad2f94e41bdb5a0ef0">SRC_COLOR</a> = GL_SRC_COLOR,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a5390a53256a2cadd18b6bbaf62c3998d">CONSTANT_COLOR</a> = GL_CONSTANT_COLOR,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a91d77dd28750315716b37cfa7b3a2f58">ONE_MINUS_CONSTANT_COLOR</a> = GL_ONE_MINUS_CONSTANT_COLOR,
<br/>
  <a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01ae1333861b1368e73857c57533a669b7b">CONSTANT_ALPHA</a> = GL_CONSTANT_ALPHA,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01ae77d64a1f8cf2a1c5b81e067f973686e">ONE_MINUS_CONSTANT_ALPHA</a> = GL_ONE_MINUS_CONSTANT_ALPHA,
<a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01a4433049221635a7368399a3bf3cece87">ZERO</a> = GL_ZERO
<br/>
}</td></tr>
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a1cea6447652bb77d061bac3859b6f586">BlendFunc</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a95ff1d273116446397ffe1caed1b6edc">BlendFunc</a> (GLenum source, GLenum destination)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a99c9c9254580a14c3905f7e15d2ab397">BlendFunc</a> (GLenum source, GLenum destination, GLenum source_alpha, GLenum destination_alpha)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#adf02a5ec86a5d2e366ad869bcfa0e98f">BlendFunc</a> (const <a class="el" href="a00059.html">BlendFunc</a> &trans, const <a class="el" href="a00169.html">CopyOp</a> &copyop=CopyOp::SHALLOW_COPY)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Copy constructor using <a class="el" href="a00169.html" title="Copy Op(erator) used to control whether shallow or deep copy is used during copy construction and clo...">CopyOp</a> to manage deep vs shallow copy. <a href="#adf02a5ec86a5d2e366ad869bcfa0e98f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a5bea713035ec8fbe385211b694e36ed5">META_StateAttribute</a> (osg, <a class="el" href="a00059.html">BlendFunc</a>, BLENDFUNC)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a3bebe1997243748d55287d6b9bc4d175">compare</a> (const <a class="el" href="a00743.html">StateAttribute</a> &sa) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. <a href="#a3bebe1997243748d55287d6b9bc4d175"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a69dbc3000fecd2cbb875781baa4a8eca">getModeUsage</a> (<a class="el" href="a00475.html">StateAttribute::ModeUsage</a> &usage) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Return the modes associated with this <a class="el" href="a00743.html" title="Base class for state attributes.">StateAttribute</a>. <a href="#a69dbc3000fecd2cbb875781baa4a8eca"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#aa0cf806599c539267ea98a2bef78aa59">setFunction</a> (GLenum source, GLenum destination)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a0e9c09f6fd41d220981769a95fb75287">setFunction</a> (GLenum source_rgb, GLenum destination_rgb, GLenum source_alpha, GLenum destination_alpha)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a112182a6a2b6ad94ab2ee65363c41ea5">setSource</a> (GLenum source)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a5f5e7251eda09c61c7374ac5bf45e52e">getSource</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a1742187d7a9105484e58971ac541f285">setSourceRGB</a> (GLenum source)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a52d8709bdefdbc8dcbbe18c5e3a75d15">getSourceRGB</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a82e859bfd5037032649eab51524a5aa6">setSourceAlpha</a> (GLenum source)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#ac6dfe72b79b8e4507f24e9c145d3b129">getSourceAlpha</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a9bc7a58037da3260b115dd411105b49f">setDestination</a> (GLenum destination)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#abb238542c9d454bbff62c0600a5f0172">getDestination</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a0f7aca58b9df881e3f94c794cc13ed9b">setDestinationRGB</a> (GLenum destination)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a71655db0706259e3cf17270270f45bed">getDestinationRGB</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a042d458f2888748848e7ac1ba54e8bbb">setDestinationAlpha</a> (GLenum destination)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a0a4264c2d2fcf88bf870387606f78f3b">getDestinationAlpha</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a4796bc1b4efcc7343d3343e8f798e60f">apply</a> (<a class="el" href="a00742.html">State</a> &state) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">apply the OpenGL state attributes. <a href="#a4796bc1b4efcc7343d3343e8f798e60f"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pub-static-methods"></a>
Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static <a class="el" href="a00272.html">Extensions</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a7acf916e3384cc0fe898cbca222432d6">getExtensions</a> (unsigned int contextID, bool createIfNotInitalized)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the <a class="el" href="a00272.html" title="Encapsulates queries of extension availability, obtains extension function pointers, and provides convenience wrappers for calling extension functions.">Extensions</a> object for the given context. <a href="#a7acf916e3384cc0fe898cbca222432d6"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a05479c90275c2ed92557bf7016b642c2">setExtensions</a> (unsigned int contextID, <a class="el" href="a00272.html">Extensions</a> *extensions)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight"><a class="el" href="a00059.html#a05479c90275c2ed92557bf7016b642c2" title="setExtensions() allows users to override the extensions across graphics contexts.">setExtensions()</a> allows users to override the extensions across graphics contexts. <a href="#a05479c90275c2ed92557bf7016b642c2"></a><br/></td></tr>
<tr><td colspan="2"><h2><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a054dc86c4d544a54f2dea95e63be7d33">~BlendFunc</a> ()</td></tr>
<tr><td colspan="2"><h2><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#ac2b2abbd18ebb0236a9da81a422ce0be">_source_factor</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a10734a945908169964f1c27ab0347be1">_destination_factor</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#af652dafc72d3b3a1edad1f51bf79868a">_source_factor_alpha</a></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">GLenum </td><td class="memItemRight" valign="bottom"><a class="el" href="a00059.html#a8c4334f29d5ed42b1d9f1fc6f399e2f4">_destination_factor_alpha</a></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Encapsulates OpenGL blend/transparency state. </p>
</div><hr/><h2>Member Enumeration Documentation</h2>
<a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01"></a><!-- doxytag: member="osg::BlendFunc::BlendFuncMode" ref="a1ef08fe436f9663ea1c8519e071dff01" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">enum <a class="el" href="a00059.html#a1ef08fe436f9663ea1c8519e071dff01">osg::BlendFunc::BlendFuncMode</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<dl><dt><b>Enumerator: </b></dt><dd><table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a61a48f182081e2a52b99673c84f4521f"></a><!-- doxytag: member="DST_ALPHA" ref="a1ef08fe436f9663ea1c8519e071dff01a61a48f182081e2a52b99673c84f4521f" args="" -->DST_ALPHA</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a738ac043ff4400272c7d0e4b446ee52a"></a><!-- doxytag: member="DST_COLOR" ref="a1ef08fe436f9663ea1c8519e071dff01a738ac043ff4400272c7d0e4b446ee52a" args="" -->DST_COLOR</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01aa3d2e1ec202b12434c6f25012229c124"></a><!-- doxytag: member="ONE" ref="a1ef08fe436f9663ea1c8519e071dff01aa3d2e1ec202b12434c6f25012229c124" args="" -->ONE</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a55b98ea6c0a1cf226cd0033e842a2ecc"></a><!-- doxytag: member="ONE_MINUS_DST_ALPHA" ref="a1ef08fe436f9663ea1c8519e071dff01a55b98ea6c0a1cf226cd0033e842a2ecc" args="" -->ONE_MINUS_DST_ALPHA</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a4b359af52d6f629285f0379854584ce8"></a><!-- doxytag: member="ONE_MINUS_DST_COLOR" ref="a1ef08fe436f9663ea1c8519e071dff01a4b359af52d6f629285f0379854584ce8" args="" -->ONE_MINUS_DST_COLOR</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a387252f2ff0041b782050b1fd76273ea"></a><!-- doxytag: member="ONE_MINUS_SRC_ALPHA" ref="a1ef08fe436f9663ea1c8519e071dff01a387252f2ff0041b782050b1fd76273ea" args="" -->ONE_MINUS_SRC_ALPHA</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01aeb18b936b61ffaafe6d16d6a4843f91e"></a><!-- doxytag: member="ONE_MINUS_SRC_COLOR" ref="a1ef08fe436f9663ea1c8519e071dff01aeb18b936b61ffaafe6d16d6a4843f91e" args="" -->ONE_MINUS_SRC_COLOR</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a5c4f220243cbb55c1d4cbb636e68b09f"></a><!-- doxytag: member="SRC_ALPHA" ref="a1ef08fe436f9663ea1c8519e071dff01a5c4f220243cbb55c1d4cbb636e68b09f" args="" -->SRC_ALPHA</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01ab76ff39e232bc0862fa3880e54fb4313"></a><!-- doxytag: member="SRC_ALPHA_SATURATE" ref="a1ef08fe436f9663ea1c8519e071dff01ab76ff39e232bc0862fa3880e54fb4313" args="" -->SRC_ALPHA_SATURATE</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a0988ba56addc1dad2f94e41bdb5a0ef0"></a><!-- doxytag: member="SRC_COLOR" ref="a1ef08fe436f9663ea1c8519e071dff01a0988ba56addc1dad2f94e41bdb5a0ef0" args="" -->SRC_COLOR</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a5390a53256a2cadd18b6bbaf62c3998d"></a><!-- doxytag: member="CONSTANT_COLOR" ref="a1ef08fe436f9663ea1c8519e071dff01a5390a53256a2cadd18b6bbaf62c3998d" args="" -->CONSTANT_COLOR</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a91d77dd28750315716b37cfa7b3a2f58"></a><!-- doxytag: member="ONE_MINUS_CONSTANT_COLOR" ref="a1ef08fe436f9663ea1c8519e071dff01a91d77dd28750315716b37cfa7b3a2f58" args="" -->ONE_MINUS_CONSTANT_COLOR</em> </td><td>
</td></tr>
<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01ae1333861b1368e73857c57533a669b7b"></a><!-- doxytag: member="CONSTANT_ALPHA" ref="a1ef08fe436f9663ea1c8519e071dff01ae1333861b1368e73857c57533a669b7b" args="" -->CONSTANT_ALPHA</em> </td><td>
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<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01ae77d64a1f8cf2a1c5b81e067f973686e"></a><!-- doxytag: member="ONE_MINUS_CONSTANT_ALPHA" ref="a1ef08fe436f9663ea1c8519e071dff01ae77d64a1f8cf2a1c5b81e067f973686e" args="" -->ONE_MINUS_CONSTANT_ALPHA</em> </td><td>
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<tr><td valign="top"><em><a class="anchor" id="a1ef08fe436f9663ea1c8519e071dff01a4433049221635a7368399a3bf3cece87"></a><!-- doxytag: member="ZERO" ref="a1ef08fe436f9663ea1c8519e071dff01a4433049221635a7368399a3bf3cece87" args="" -->ZERO</em> </td><td>
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</dd>
</dl>
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</div>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a1cea6447652bb77d061bac3859b6f586"></a><!-- doxytag: member="osg::BlendFunc::BlendFunc" ref="a1cea6447652bb77d061bac3859b6f586" args="()" -->
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<td class="memname">osg::BlendFunc::BlendFunc </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
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</div>
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<a class="anchor" id="a95ff1d273116446397ffe1caed1b6edc"></a><!-- doxytag: member="osg::BlendFunc::BlendFunc" ref="a95ff1d273116446397ffe1caed1b6edc" args="(GLenum source, GLenum destination)" -->
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<td class="memname">osg::BlendFunc::BlendFunc </td>
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<td class="paramtype">GLenum </td>
<td class="paramname"><em>source</em>, </td>
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<td class="paramtype">GLenum </td>
<td class="paramname"><em>destination</em> </td>
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<td>)</td>
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<a class="anchor" id="a99c9c9254580a14c3905f7e15d2ab397"></a><!-- doxytag: member="osg::BlendFunc::BlendFunc" ref="a99c9c9254580a14c3905f7e15d2ab397" args="(GLenum source, GLenum destination, GLenum source_alpha, GLenum destination_alpha)" -->
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<td class="memname">osg::BlendFunc::BlendFunc </td>
<td>(</td>
<td class="paramtype">GLenum </td>
<td class="paramname"><em>source</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">GLenum </td>
<td class="paramname"><em>destination</em>, </td>
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<td class="paramkey"></td>
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<td class="paramtype">GLenum </td>
<td class="paramname"><em>source_alpha</em>, </td>
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<td class="paramtype">GLenum </td>
<td class="paramname"><em>destination_alpha</em> </td>
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<td>)</td>
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<a class="anchor" id="adf02a5ec86a5d2e366ad869bcfa0e98f"></a><!-- doxytag: member="osg::BlendFunc::BlendFunc" ref="adf02a5ec86a5d2e366ad869bcfa0e98f" args="(const BlendFunc &trans, const CopyOp &copyop=CopyOp::SHALLOW_COPY)" -->
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<td class="memname">osg::BlendFunc::BlendFunc </td>
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<td class="paramtype">const <a class="el" href="a00059.html">BlendFunc</a> & </td>
<td class="paramname"><em>trans</em>, </td>
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<td class="paramtype">const <a class="el" href="a00169.html">CopyOp</a> & </td>
<td class="paramname"><em>copyop</em> = <code>CopyOp::SHALLOW_COPY</code> </td>
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<td></td><td><code> [inline]</code></td>
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<p>Copy constructor using <a class="el" href="a00169.html" title="Copy Op(erator) used to control whether shallow or deep copy is used during copy construction and clo...">CopyOp</a> to manage deep vs shallow copy. </p>
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<a class="anchor" id="a054dc86c4d544a54f2dea95e63be7d33"></a><!-- doxytag: member="osg::BlendFunc::~BlendFunc" ref="a054dc86c4d544a54f2dea95e63be7d33" args="()" -->
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<td class="memname">virtual osg::BlendFunc::~BlendFunc </td>
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<td><code> [protected, virtual]</code></td>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a4796bc1b4efcc7343d3343e8f798e60f"></a><!-- doxytag: member="osg::BlendFunc::apply" ref="a4796bc1b4efcc7343d3343e8f798e60f" args="(State &state) const " -->
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<td class="memname">virtual void osg::BlendFunc::apply </td>
<td>(</td>
<td class="paramtype"><a class="el" href="a00742.html">State</a> & </td>
<td class="paramname"></td><td>)</td>
<td> const<code> [virtual]</code></td>
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<p>apply the OpenGL state attributes. </p>
<p>The render info for the current OpenGL context is passed in to allow the <a class="el" href="a00743.html" title="Base class for state attributes.">StateAttribute</a> to obtain details on the the current context and state. </p>
<p>Reimplemented from <a class="el" href="a00743.html#a579c9e2646b207f66acb7dc8653e9d75">osg::StateAttribute</a>.</p>
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<a class="anchor" id="a3bebe1997243748d55287d6b9bc4d175"></a><!-- doxytag: member="osg::BlendFunc::compare" ref="a3bebe1997243748d55287d6b9bc4d175" args="(const StateAttribute &sa) const " -->
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<td class="memname">virtual int osg::BlendFunc::compare </td>
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<td class="paramtype">const <a class="el" href="a00743.html">StateAttribute</a> & </td>
<td class="paramname"><em>sa</em></td><td>)</td>
<td> const<code> [inline, virtual]</code></td>
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<p>Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. </p>
<p>Implements <a class="el" href="a00743.html#a0ff33c0a11fc2e9980805b4d0325e16f">osg::StateAttribute</a>.</p>
<p>References <a class="el" href="a01248.html#a71201dd0137c66f15ce6742478c5b3e0">COMPARE_StateAttribute_Parameter</a>, and <a class="el" href="a01248.html#aac09eac41cba49d7203ecc64b7aec9a9">COMPARE_StateAttribute_Types</a>.</p>
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<td class="memname">GLenum osg::BlendFunc::getDestination </td>
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<td> const<code> [inline]</code></td>
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<a class="anchor" id="a0a4264c2d2fcf88bf870387606f78f3b"></a><!-- doxytag: member="osg::BlendFunc::getDestinationAlpha" ref="a0a4264c2d2fcf88bf870387606f78f3b" args="() const " -->
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<td class="memname">GLenum osg::BlendFunc::getDestinationAlpha </td>
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<td> const<code> [inline]</code></td>
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<a class="anchor" id="a71655db0706259e3cf17270270f45bed"></a><!-- doxytag: member="osg::BlendFunc::getDestinationRGB" ref="a71655db0706259e3cf17270270f45bed" args="() const " -->
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<td class="memname">GLenum osg::BlendFunc::getDestinationRGB </td>
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<td> const<code> [inline]</code></td>
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<a class="anchor" id="a7acf916e3384cc0fe898cbca222432d6"></a><!-- doxytag: member="osg::BlendFunc::getExtensions" ref="a7acf916e3384cc0fe898cbca222432d6" args="(unsigned int contextID, bool createIfNotInitalized)" -->
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<td class="memname">static <a class="el" href="a00272.html">Extensions</a>* osg::BlendFunc::getExtensions </td>
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<td class="paramtype">unsigned int </td>
<td class="paramname"><em>contextID</em>, </td>
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<td class="paramtype">bool </td>
<td class="paramname"><em>createIfNotInitalized</em> </td>
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<td></td><td><code> [static]</code></td>
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<p>Returns the <a class="el" href="a00272.html" title="Encapsulates queries of extension availability, obtains extension function pointers, and provides convenience wrappers for calling extension functions.">Extensions</a> object for the given context. </p>
<p>If createIfNotInitalized is true and the <a class="el" href="a00272.html" title="Encapsulates queries of extension availability, obtains extension function pointers, and provides convenience wrappers for calling extension functions.">Extensions</a> object doesn't exist, <a class="el" href="a00059.html#a7acf916e3384cc0fe898cbca222432d6" title="Returns the Extensions object for the given context.">getExtensions()</a> creates it on the given context. Returns NULL if createIfNotInitalized is false and the <a class="el" href="a00272.html" title="Encapsulates queries of extension availability, obtains extension function pointers, and provides convenience wrappers for calling extension functions.">Extensions</a> object doesn't exist. </p>
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<a class="anchor" id="a69dbc3000fecd2cbb875781baa4a8eca"></a><!-- doxytag: member="osg::BlendFunc::getModeUsage" ref="a69dbc3000fecd2cbb875781baa4a8eca" args="(StateAttribute::ModeUsage &usage) const " -->
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<td class="memname">virtual bool osg::BlendFunc::getModeUsage </td>
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<td class="paramtype"><a class="el" href="a00475.html">StateAttribute::ModeUsage</a> & </td>
<td class="paramname"></td><td>)</td>
<td> const<code> [inline, virtual]</code></td>
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<p>Return the modes associated with this <a class="el" href="a00743.html" title="Base class for state attributes.">StateAttribute</a>. </p>
<p>Reimplemented from <a class="el" href="a00743.html#a1d6ef6841d265e7ac4164e9128bd0338">osg::StateAttribute</a>.</p>
<p>References <a class="el" href="a00475.html#ac1ae7f8c6abbd07eb355592f5bd2b65a">osg::StateAttribute::ModeUsage::usesMode()</a>.</p>
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<a class="anchor" id="a5f5e7251eda09c61c7374ac5bf45e52e"></a><!-- doxytag: member="osg::BlendFunc::getSource" ref="a5f5e7251eda09c61c7374ac5bf45e52e" args="() const " -->
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<td class="memname">GLenum osg::BlendFunc::getSource </td>
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<td> const<code> [inline]</code></td>
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<a class="anchor" id="ac6dfe72b79b8e4507f24e9c145d3b129"></a><!-- doxytag: member="osg::BlendFunc::getSourceAlpha" ref="ac6dfe72b79b8e4507f24e9c145d3b129" args="() const " -->
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<td class="memname">GLenum osg::BlendFunc::getSourceAlpha </td>
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<td> const<code> [inline]</code></td>
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<a class="anchor" id="a52d8709bdefdbc8dcbbe18c5e3a75d15"></a><!-- doxytag: member="osg::BlendFunc::getSourceRGB" ref="a52d8709bdefdbc8dcbbe18c5e3a75d15" args="() const " -->
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<td class="memname">GLenum osg::BlendFunc::getSourceRGB </td>
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<td> const<code> [inline]</code></td>
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<a class="anchor" id="a5bea713035ec8fbe385211b694e36ed5"></a><!-- doxytag: member="osg::BlendFunc::META_StateAttribute" ref="a5bea713035ec8fbe385211b694e36ed5" args="(osg, BlendFunc, BLENDFUNC)" -->
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<td class="paramtype">osg </td>
<td class="paramname">, </td>
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<td class="paramkey"></td>
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<td class="paramtype">BLENDFUNC </td>
<td class="paramname"> </td>
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<td class="memname">void osg::BlendFunc::setDestination </td>
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<td><code> [inline]</code></td>
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<td class="memname">void osg::BlendFunc::setDestinationAlpha </td>
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<td class="paramtype">GLenum </td>
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<td class="memname">void osg::BlendFunc::setDestinationRGB </td>
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<td><code> [inline]</code></td>
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<a class="anchor" id="a05479c90275c2ed92557bf7016b642c2"></a><!-- doxytag: member="osg::BlendFunc::setExtensions" ref="a05479c90275c2ed92557bf7016b642c2" args="(unsigned int contextID, Extensions *extensions)" -->
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<td class="memname">static void osg::BlendFunc::setExtensions </td>
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<td></td><td><code> [static]</code></td>
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<p><a class="el" href="a00059.html#a05479c90275c2ed92557bf7016b642c2" title="setExtensions() allows users to override the extensions across graphics contexts.">setExtensions()</a> allows users to override the extensions across graphics contexts. </p>
<p>Typically used when you have different extensions supported across graphics pipes, but need to ensure that they all use the same low common denominator extensions. </p>
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<a class="anchor" id="a0e9c09f6fd41d220981769a95fb75287"></a><!-- doxytag: member="osg::BlendFunc::setFunction" ref="a0e9c09f6fd41d220981769a95fb75287" args="(GLenum source_rgb, GLenum destination_rgb, GLenum source_alpha, GLenum destination_alpha)" -->
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<td class="memname">void osg::BlendFunc::setSourceAlpha </td>
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<a class="anchor" id="a1742187d7a9105484e58971ac541f285"></a><!-- doxytag: member="osg::BlendFunc::setSourceRGB" ref="a1742187d7a9105484e58971ac541f285" args="(GLenum source)" -->
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<td class="memname">void osg::BlendFunc::setSourceRGB </td>
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<td class="paramtype">GLenum </td>
<td class="paramname"><em>source</em></td><td>)</td>
<td><code> [inline]</code></td>
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<hr/><h2>Member Data Documentation</h2>
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<td class="memname">GLenum <a class="el" href="a00059.html#a10734a945908169964f1c27ab0347be1">osg::BlendFunc::_destination_factor</a><code> [protected]</code></td>
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<a class="anchor" id="a8c4334f29d5ed42b1d9f1fc6f399e2f4"></a><!-- doxytag: member="osg::BlendFunc::_destination_factor_alpha" ref="a8c4334f29d5ed42b1d9f1fc6f399e2f4" args="" -->
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<td class="memname">GLenum <a class="el" href="a00059.html#a8c4334f29d5ed42b1d9f1fc6f399e2f4">osg::BlendFunc::_destination_factor_alpha</a><code> [protected]</code></td>
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<a class="anchor" id="ac2b2abbd18ebb0236a9da81a422ce0be"></a><!-- doxytag: member="osg::BlendFunc::_source_factor" ref="ac2b2abbd18ebb0236a9da81a422ce0be" args="" -->
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<td class="memname">GLenum <a class="el" href="a00059.html#ac2b2abbd18ebb0236a9da81a422ce0be">osg::BlendFunc::_source_factor</a><code> [protected]</code></td>
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<a class="anchor" id="af652dafc72d3b3a1edad1f51bf79868a"></a><!-- doxytag: member="osg::BlendFunc::_source_factor_alpha" ref="af652dafc72d3b3a1edad1f51bf79868a" args="" -->
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<td class="memname">GLenum <a class="el" href="a00059.html#af652dafc72d3b3a1edad1f51bf79868a">osg::BlendFunc::_source_factor_alpha</a><code> [protected]</code></td>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>osg/<a class="el" href="a01125.html">BlendFunc</a></li>
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<img src="osg32-32.png" alt="osg logo" />
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<address><small>Generated at Tue May 31 2011 04:19:32 for the <a href="http://www.openscenegraph.org/">OpenSceneGraph</a>
by <a href="http://www.doxygen.org">doxygen</a> 1.7.4.</small></address>
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