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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd">
<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>glDrawRangeElementsBaseVertex - OpenGL 4 Reference Pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /></head><body><div class="refentry"><a id="glDrawRangeElementsBaseVertex"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glDrawRangeElementsBaseVertex — render primitives from array data with a per-element offset</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <strong class="fsfunc">glDrawRangeElementsBaseVertex</strong>(</code></td><td>GLenum <var class="pdparam">mode</var>, </td></tr><tr><td> </td><td>GLuint <var class="pdparam">start</var>, </td></tr><tr><td> </td><td>GLuint <var class="pdparam">end</var>, </td></tr><tr><td> </td><td>GLsizei <var class="pdparam">count</var>, </td></tr><tr><td> </td><td>GLenum <var class="pdparam">type</var>, </td></tr><tr><td> </td><td>GLvoid *<var class="pdparam">indices</var>, </td></tr><tr><td> </td><td>GLint <var class="pdparam">basevertex</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>mode</code></em></span></dt><dd><p>
Specifies what kind of primitives to render.
Symbolic constants
<code class="constant">GL_POINTS</code>, <code class="constant">GL_LINE_STRIP</code>, <code class="constant">GL_LINE_LOOP</code>,
<code class="constant">GL_LINES</code>, <code class="constant">GL_TRIANGLE_STRIP</code>, <code class="constant">GL_TRIANGLE_FAN</code>,
<code class="constant">GL_TRIANGLES</code>, <code class="constant">GL_LINES_ADJACENCY</code>, <code class="constant">GL_LINE_STRIP_ADJACENCY</code>,
<code class="constant">GL_TRIANGLES_ADJACENCY</code>, <code class="constant">GL_TRIANGLE_STRIP_ADJACENCY</code> and <code class="constant">GL_PATCHES</code> are accepted.
</p></dd><dt><span class="term"><em class="parameter"><code>start</code></em></span></dt><dd><p>
Specifies the minimum array index contained in <em class="parameter"><code>indices</code></em>.
</p></dd><dt><span class="term"><em class="parameter"><code>end</code></em></span></dt><dd><p>
Specifies the maximum array index contained in <em class="parameter"><code>indices</code></em>.
</p></dd><dt><span class="term"><em class="parameter"><code>count</code></em></span></dt><dd><p>
Specifies the number of elements to be rendered.
</p></dd><dt><span class="term"><em class="parameter"><code>type</code></em></span></dt><dd><p>
Specifies the type of the values in indices. Must be one of <code class="constant">GL_UNSIGNED_BYTE</code>,
<code class="constant">GL_UNSIGNED_SHORT</code>, or <code class="constant">GL_UNSIGNED_INT</code>.
</p></dd><dt><span class="term"><em class="parameter"><code>indices</code></em></span></dt><dd><p>
Specifies a pointer to the location where the indices are stored.
</p></dd><dt><span class="term"><em class="parameter"><code>basevertex</code></em></span></dt><dd><p>
Specifies a constant that should be added to each element of <em class="parameter"><code>indices</code></em>
when chosing elements from the enabled vertex arrays.
</p></dd></dl></div></div><div class="refsect1"><a id="description"></a><h2>Description</h2><p>
<code class="function">glDrawRangeElementsBaseVertex</code> is a restricted form of
<a class="citerefentry" href="glDrawElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsBaseVertex</span></span></a>. <em class="parameter"><code>mode</code></em>,
<em class="parameter"><code>start</code></em>, <em class="parameter"><code>end</code></em>, <em class="parameter"><code>count</code></em> and <em class="parameter"><code>basevertex</code></em> match
the corresponding arguments to <a class="citerefentry" href="glDrawElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsBaseVertex</span></span></a>, with the additional
constraint that all values in the array <em class="parameter"><code>indices</code></em> must lie between <em class="parameter"><code>start</code></em> and <em class="parameter"><code>end</code></em>,
inclusive, prior to adding <em class="parameter"><code>basevertex</code></em>. Index values lying outside the range [<em class="parameter"><code>start</code></em>, <em class="parameter"><code>end</code></em>]
are treated in the same way as <a class="citerefentry" href="glDrawElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsBaseVertex</span></span></a>. The <span class="emphasis"><em>i</em></span>th element
transferred by the corresponding draw call will be taken from element <em class="parameter"><code>indices</code></em>[i] + <em class="parameter"><code>basevertex</code></em> of each enabled
array. If the resulting value is larger than the maximum value representable by <em class="parameter"><code>type</code></em>, it is as if the calculation were upconverted to
32-bit unsigned integers (with wrapping on overflow conditions). The operation is undefined if the sum would be negative.
</p></div><div class="refsect1"><a id="errors"></a><h2>Errors</h2><p>
<code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>mode</code></em> is not an accepted value.
</p><p>
<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>count</code></em> is negative.
</p><p>
<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>end</code></em> < <em class="parameter"><code>start</code></em>.
</p><p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if a geometry shader is active and <em class="parameter"><code>mode</code></em>
is incompatible with the input primitive type of the geometry shader in the currently installed program object.
</p><p>
<code class="constant">GL_INVALID_OPERATION</code> is generated if a non-zero buffer object name is bound to an
enabled array or the element array and the buffer object's data store is currently mapped.
</p></div><div class="refsect1"><a id="seealso"></a><h2>See Also</h2><p>
<a class="citerefentry" href="glDrawElements.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>,
<a class="citerefentry" href="glDrawElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsBaseVertex</span></span></a>,
<a class="citerefentry" href="glDrawRangeElements.xml"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElements</span></span></a>,
<a class="citerefentry" href="glDrawElementsInstanced.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsInstanced</span></span></a>,
<a class="citerefentry" href="glDrawElementsInstancedBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsInstancedBaseVertex</span></span></a>
</p></div><div class="refsect1"><a id="Copyright"></a><h2>Copyright</h2><p>
Copyright <span class="trademark"></span>© 2010-2013 Khronos Group.
This material may be distributed subject to the terms and conditions set forth in
the Open Publication License, v 1.0, 8 June 1999.
<a class="ulink" href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
</p></div></div></body></html>
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