152 lines
8.1 KiB
XML
152 lines
8.1 KiB
XML
|
<?xml version="1.0" encoding="UTF-8"?>
|
||
|
|
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
|
||
|
|
"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
|
||
|
|
<refentry id="glDrawRangeElementsBaseVertex">
|
||
|
|
<refmeta>
|
||
|
|
<refmetainfo>
|
||
|
|
<copyright>
|
||
|
|
<year>2010</year>
|
||
|
|
<holder>Khronos Group</holder>
|
||
|
|
</copyright>
|
||
|
|
</refmetainfo>
|
||
|
|
<refentrytitle>glDrawRangeElementsBaseVertex</refentrytitle>
|
||
|
|
<manvolnum>3G</manvolnum>
|
||
|
|
</refmeta>
|
||
|
|
<refnamediv>
|
||
|
|
<refname>glDrawRangeElementsBaseVertex</refname>
|
||
|
|
<refpurpose>render primitives from array data with a per-element offset</refpurpose>
|
||
|
|
</refnamediv>
|
||
|
|
<refsynopsisdiv><title>C Specification</title>
|
||
|
|
<funcsynopsis>
|
||
|
|
<funcprototype>
|
||
|
|
<funcdef>void <function>glDrawRangeElementsBaseVertex</function></funcdef>
|
||
|
|
<paramdef>GLenum <parameter>mode</parameter></paramdef>
|
||
|
|
<paramdef>GLuint <parameter>start</parameter></paramdef>
|
||
|
|
<paramdef>GLuint <parameter>end</parameter></paramdef>
|
||
|
|
<paramdef>GLsizei <parameter>count</parameter></paramdef>
|
||
|
|
<paramdef>GLenum <parameter>type</parameter></paramdef>
|
||
|
|
<paramdef>GLvoid *<parameter>indices</parameter></paramdef>
|
||
|
|
<paramdef>GLint <parameter>basevertex</parameter></paramdef>
|
||
|
|
</funcprototype>
|
||
|
|
</funcsynopsis>
|
||
|
|
</refsynopsisdiv>
|
||
|
|
<!-- eqn: ignoring delim $$ -->
|
||
|
|
<refsect1 id="parameters"><title>Parameters</title>
|
||
|
|
<variablelist>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>mode</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies what kind of primitives to render.
|
||
|
|
Symbolic constants
|
||
|
|
<constant>GL_POINTS</constant>, <constant>GL_LINE_STRIP</constant>, <constant>GL_LINE_LOOP</constant>,
|
||
|
|
<constant>GL_LINES</constant>, <constant>GL_TRIANGLE_STRIP</constant>, <constant>GL_TRIANGLE_FAN</constant>,
|
||
|
|
<constant>GL_TRIANGLES</constant>, <constant>GL_LINES_ADJACENCY</constant>, <constant>GL_LINE_STRIP_ADJACENCY</constant>,
|
||
|
|
<constant>GL_TRIANGLES_ADJACENCY</constant>, <constant>GL_TRIANGLE_STRIP_ADJACENCY</constant> and <constant>GL_PATCHES</constant> are accepted.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>start</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies the minimum array index contained in <parameter>indices</parameter>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>end</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies the maximum array index contained in <parameter>indices</parameter>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>count</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies the number of elements to be rendered.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>type</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies the type of the values in indices. Must be one of <constant>GL_UNSIGNED_BYTE</constant>,
|
||
|
|
<constant>GL_UNSIGNED_SHORT</constant>, or <constant>GL_UNSIGNED_INT</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>indices</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies a pointer to the location where the indices are stored.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><parameter>basevertex</parameter></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
Specifies a constant that should be added to each element of <parameter>indices</parameter>
|
||
|
|
when chosing elements from the enabled vertex arrays.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
</variablelist>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="description"><title>Description</title>
|
||
|
|
<para>
|
||
|
|
<function>glDrawRangeElementsBaseVertex</function> is a restricted form of
|
||
|
|
<citerefentry><refentrytitle>glDrawElementsBaseVertex</refentrytitle></citerefentry>. <parameter>mode</parameter>,
|
||
|
|
<parameter>start</parameter>, <parameter>end</parameter>, <parameter>count</parameter> and <parameter>basevertex</parameter> match
|
||
|
|
the corresponding arguments to <citerefentry><refentrytitle>glDrawElementsBaseVertex</refentrytitle></citerefentry>, with the additional
|
||
|
|
constraint that all values in the array <parameter>indices</parameter> must lie between <parameter>start</parameter> and <parameter>end</parameter>,
|
||
|
|
inclusive, prior to adding <parameter>basevertex</parameter>. Index values lying outside the range [<parameter>start</parameter>, <parameter>end</parameter>]
|
||
|
|
are treated in the same way as <citerefentry><refentrytitle>glDrawElementsBaseVertex</refentrytitle></citerefentry>. The <emphasis>i</emphasis>th element
|
||
|
|
transferred by the corresponding draw call will be taken from element <parameter>indices</parameter>[i] + <parameter>basevertex</parameter> of each enabled
|
||
|
|
array. If the resulting value is larger than the maximum value representable by <parameter>type</parameter>, 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.
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="errors"><title>Errors</title>
|
||
|
|
<para>
|
||
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>mode</parameter> is not an accepted value.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>count</parameter> is negative.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>end</parameter> < <parameter>start</parameter>.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if a geometry shader is active and <parameter>mode</parameter>
|
||
|
|
is incompatible with the input primitive type of the geometry shader in the currently installed program object.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_INVALID_OPERATION</constant> 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.
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="seealso"><title>See Also</title>
|
||
|
|
<para>
|
||
|
|
<citerefentry><refentrytitle>glDrawElements</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glDrawElementsBaseVertex</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glDrawElementsInstanced</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glDrawElementsInstancedBaseVertex</refentrytitle></citerefentry>
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="Copyright"><title>Copyright</title>
|
||
|
|
<para>
|
||
|
|
Copyright <trademark class="copyright"></trademark> 2010 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.
|
||
|
|
<ulink url="http://opencontent.org/openpub/">http://opencontent.org/openpub/</ulink>.
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
</refentry>
|