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4 Reference Pages
</title><meta name=
"generator" content=
"DocBook XSL Stylesheets V1.69.1" /></head><body><div class=
"refentry" lang=
"en" xml:
lang=
"en"><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" summary=
"Function synopsis" cellspacing=
"0" cellpadding=
"0"><tr><td><code class=
"funcdef">void
<b class=
"fsfunc">glDrawRangeElementsBaseVertex
</b>(
</code></td><td>GLenum
</td><td><var class=
"pdparam">mode
</var>,
</td></tr><tr><td> </td><td>GLuint
</td><td><var class=
"pdparam">start
</var>,
</td></tr><tr><td> </td><td>GLuint
</td><td><var class=
"pdparam">end
</var>,
</td></tr><tr><td> </td><td>GLsizei
</td><td><var class=
"pdparam">count
</var>,
</td></tr><tr><td> </td><td>GLenum
</td><td><var class=
"pdparam">type
</var>,
</td></tr><tr><td> </td><td>GLvoid *
</td><td><var class=
"pdparam">indices
</var>,
</td></tr><tr><td> </td><td>GLint
</td><td><var class=
"pdparam">basevertex
</var><code>)
</code>;
</td></tr></table></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"parameters"></a><h2>Parameters
</h2><div class=
"variablelist"><dl><dt><span class=
"term"><em class=
"parameter"><code>mode
</code></em></span></dt><dd><p>
5 Specifies what kind of primitives to render.
7 <code class=
"constant">GL_POINTS
</code>,
<code class=
"constant">GL_LINE_STRIP
</code>,
<code class=
"constant">GL_LINE_LOOP
</code>,
8 <code class=
"constant">GL_LINES
</code>,
<code class=
"constant">GL_TRIANGLE_STRIP
</code>,
<code class=
"constant">GL_TRIANGLE_FAN
</code>,
9 <code class=
"constant">GL_TRIANGLES
</code>,
<code class=
"constant">GL_LINES_ADJACENCY
</code>,
<code class=
"constant">GL_LINE_STRIP_ADJACENCY
</code>,
10 <code class=
"constant">GL_TRIANGLES_ADJACENCY
</code>,
<code class=
"constant">GL_TRIANGLE_STRIP_ADJACENCY
</code> and
<code class=
"constant">GL_PATCHES
</code> are accepted.
11 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>start
</code></em></span></dt><dd><p>
12 Specifies the minimum array index contained in
<em class=
"parameter"><code>indices
</code></em>.
13 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>end
</code></em></span></dt><dd><p>
14 Specifies the maximum array index contained in
<em class=
"parameter"><code>indices
</code></em>.
15 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>count
</code></em></span></dt><dd><p>
16 Specifies the number of elements to be rendered.
17 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>type
</code></em></span></dt><dd><p>
18 Specifies the type of the values in indices. Must be one of
<code class=
"constant">GL_UNSIGNED_BYTE
</code>,
19 <code class=
"constant">GL_UNSIGNED_SHORT
</code>, or
<code class=
"constant">GL_UNSIGNED_INT
</code>.
20 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>indices
</code></em></span></dt><dd><p>
21 Specifies a pointer to the location where the indices are stored.
22 </p></dd><dt><span class=
"term"><em class=
"parameter"><code>basevertex
</code></em></span></dt><dd><p>
23 Specifies a constant that should be added to each element of
<em class=
"parameter"><code>indices
</code></em>
24 when chosing elements from the enabled vertex arrays.
25 </p></dd></dl></div></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"description"></a><h2>Description
</h2><p>
26 <code class=
"function">glDrawRangeElementsBaseVertex
</code> is a restricted form of
27 <a href=
"glDrawElementsBaseVertex.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDrawElementsBaseVertex
</span></span></a>.
<em class=
"parameter"><code>mode
</code></em>,
28 <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
29 the corresponding arguments to
<a href=
"glDrawElementsBaseVertex.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDrawElementsBaseVertex
</span></span></a>, with the additional
30 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>,
31 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>]
32 are treated in the same way as
<a href=
"glDrawElementsBaseVertex.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDrawElementsBaseVertex
</span></span></a>. The
<span class=
"emphasis"><em>i
</em></span>th element
33 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
34 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
35 32-bit unsigned integers (with wrapping on overflow conditions). The operation is undefined if the sum would be negative.
36 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"errors"></a><h2>Errors
</h2><p>
37 <code class=
"constant">GL_INVALID_ENUM
</code> is generated if
<em class=
"parameter"><code>mode
</code></em> is not an accepted value.
39 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>count
</code></em> is negative.
41 <code class=
"constant">GL_INVALID_VALUE
</code> is generated if
<em class=
"parameter"><code>end
</code></em> < <em class=
"parameter"><code>start
</code></em>.
43 <code class=
"constant">GL_INVALID_OPERATION
</code> is generated if a geometry shader is active and
<em class=
"parameter"><code>mode
</code></em>
44 is incompatible with the input primitive type of the geometry shader in the currently installed program object.
46 <code class=
"constant">GL_INVALID_OPERATION
</code> is generated if a non-zero buffer object name is bound to an
47 enabled array or the element array and the buffer object's data store is currently mapped.
48 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"seealso"></a><h2>See Also
</h2><p>
49 <a href=
"glDrawElements.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDrawElements
</span></span></a>,
50 <a href=
"glDrawElementsBaseVertex.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDrawElementsBaseVertex
</span></span></a>,
51 <a href=
"glDrawRangeElements.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDrawRangeElements
</span></span></a>,
52 <a href=
"glDrawElementsInstanced.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDrawElementsInstanced
</span></span></a>,
53 <a href=
"glDrawElementsInstancedBaseVertex.xml"><span class=
"citerefentry"><span class=
"refentrytitle">glDrawElementsInstancedBaseVertex
</span></span></a>
54 </p></div><div class=
"refsect1" lang=
"en" xml:
lang=
"en"><a id=
"Copyright"></a><h2>Copyright
</h2><p>
55 Copyright
<span class=
"trademark"></span>©
2010 Khronos Group.
56 This material may be distributed subject to the terms and conditions set forth in
57 the Open Publication License, v
1.0,
8 June
1999.
58 <a href=
"http://opencontent.org/openpub/" target=
"_top">http://opencontent.org/openpub/
</a>.
59 </p></div></div></body></html>
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