mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-26 12:55:31 +00:00
202 lines
10 KiB
XML
202 lines
10 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="glVertexAttribFormat">
|
|
<refmeta>
|
|
<refmetainfo>
|
|
<copyright>
|
|
<year>2012</year>
|
|
<holder>Khronos Group</holder>
|
|
</copyright>
|
|
</refmetainfo>
|
|
<refentrytitle>glVertexAttribFormat</refentrytitle>
|
|
<manvolnum>3G</manvolnum>
|
|
</refmeta>
|
|
<refnamediv>
|
|
<refname>glVertexAttribFormat</refname>
|
|
<refpurpose>specify the organization of vertex arrays</refpurpose>
|
|
</refnamediv>
|
|
<refsynopsisdiv><title>C Specification</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glVertexAttribFormat</function></funcdef>
|
|
<paramdef>GLuint <parameter>attribindex</parameter></paramdef>
|
|
<paramdef>GLint <parameter>size</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>type</parameter></paramdef>
|
|
<paramdef>GLboolean <parameter>normalized</parameter></paramdef>
|
|
<paramdef>GLuint <parameter>relativeoffset</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glVertexAttribIFormat</function></funcdef>
|
|
<paramdef>GLuint <parameter>attribindex</parameter></paramdef>
|
|
<paramdef>GLint <parameter>size</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>type</parameter></paramdef>
|
|
<paramdef>GLuint <parameter>relativeoffset</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glVertexAttribLFormat</function></funcdef>
|
|
<paramdef>GLuint <parameter>attribindex</parameter></paramdef>
|
|
<paramdef>GLint <parameter>size</parameter></paramdef>
|
|
<paramdef>GLenum <parameter>type</parameter></paramdef>
|
|
<paramdef>GLuint <parameter>relativeoffset</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
<refsect1 id="parameters"><title>Parameters</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>attribindex</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The generic vertex attribute array being described.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>size</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The number of values per vertex that are stored in the array.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>type</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The type of the data stored in the array.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>normalized</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The distance between elements within the buffer.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>relativeoffset</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
The distance between elements within the buffer.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 id="description"><title>Description</title>
|
|
<para>
|
|
<function>glVertexAttribFormat</function>, <function>glVertexAttribIFormat</function> and
|
|
<function>glVertexAttribLFormat</function> specify the organization of data in vertex arrays.
|
|
<parameter>attribindex</parameter> specifies the index of the generic vertex attribute
|
|
array whose data layout is being described, and must be less
|
|
than the value of <constant>GL_MAX_VERTEX_ATTRIBS</constant>.
|
|
</para>
|
|
<para>
|
|
<parameter>size</parameter> determines the number of components per vertex are allocated
|
|
to the specifed attribute and must be 1, 2, 3 or 4. <parameter>type</parameter> indicates
|
|
the type of the data. If <parameter>type</parameter> is one of <constant>GL_BYTE</constant>,
|
|
<constant>GL_SHORT</constant>, <constant>GL_INT</constant>, <constant>GL_FIXED</constant>,
|
|
<constant>GL_FLOAT</constant>, <constant>GL_HALF_FLOAT</constant>, and
|
|
<constant>GL_DOUBLE</constant> indicate types <code>GLbyte</code>, <code>GLshort</code>,
|
|
<code>GLint</code>, <code>GLfixed</code>, <code>GLfloat</code>, <code>GLhalf</code>, and
|
|
<code>GLdouble</code>, respectively; the values <constant>GL_UNSIGNED_BYTE</constant>,
|
|
<constant>GL_UNSIGNED_SHORT</constant>, and <constant>GL_UNSIGNED_INT</constant> indicate types
|
|
<code>GLubyte</code>, <code>GLushort</code>, and <code>GLuint</code>,
|
|
respectively; the values <constant>GL_INT_2_10_10_10_REV</constant> and
|
|
<constant>GL_UNSIGNED_INT_2_10_10_10_REV</constant> indicating respectively four signed or
|
|
unsigned elements packed into a single <code>GLuint</code>; and the value
|
|
<constant>GL_UNSIGNED_INT_10F_11F_11F_REV</constant> indicating three floating point values
|
|
packed into a single <code>GLuint</code>.
|
|
</para>
|
|
<para>
|
|
<function>glVertexAttribLFormat</function> is used to specify layout for
|
|
data associated with a generic attribute variable declared as 64-bit double precision
|
|
components. For <function>glVertexAttribLFormat</function>, <parameter>type</parameter>
|
|
must be <constant>GL_DOUBLE</constant>. In contrast to <function>glVertexAttribFormat</function>,
|
|
which will cause data declared as <constant>GL_DOUBLE</constant> to be converted to 32-bit
|
|
representation, <function>glVertexAttribLFormat</function> causes such data to be left
|
|
in its natural, 64-bit representation.
|
|
</para>
|
|
<para>
|
|
For <function>glVertexAttribFormat</function>, if <parameter>normalized</parameter> is
|
|
<constant>GL_TRUE</constant>, then integer data is normalized to the range [-1, 1] or
|
|
[0, 1] if it is signed or unsigned, respectively. If <parameter>noramlized</parameter> is
|
|
<constant>GL_FALSE</constant> then integer data is directly converted to floating point.
|
|
</para>
|
|
<para>
|
|
<parameter>relativeoffset</parameter> is the offset, measured in basic machine units
|
|
of the first element relative to the start of the vertex buffer binding this attribute
|
|
fetches from.
|
|
</para>
|
|
<para>
|
|
<function>glVertexAttribFormat</function> should be used to describe vertex attribute
|
|
layout for floating-point vertex attributes, <function>glVertexAttribIFormat</function>
|
|
should be used to describe vertex attribute layout for integer vertex attribute
|
|
and <function>glVertexAttribLFormat</function> should be used to describe the layout
|
|
for 64-bit vertex attributes. Data for an array specified by
|
|
<function>glVertexAttribIFormat</function> will always be left as integer values;
|
|
such data are referred to as pure integers.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="notes"><title>Notes</title>
|
|
<para>
|
|
<constant>GL_UNSIGNED_INT_10F_11F_11F_REV</constant> is accepted for <parameter>type</parameter>
|
|
only if the GL version is 4.4 or higher.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="errors"><title>Errors</title>
|
|
<para>
|
|
<constant>GL_INVAILD_VALUE</constant> is generated if <parameter>attribindex</parameter> is greater than
|
|
or equal to the value of <constant>GL_MAX_VERTEX_ATTRIBS</constant>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>size</parameter> is not
|
|
one of the accepted values.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated if <parameter>relativeoffset</parameter> is greater
|
|
than the value of <constant>GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET</constant>.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>type</parameter> is not
|
|
one of the accepted tokens.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if no vertex array object is bound.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="associatedgets"><title>Associated Gets</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with arguments <constant>GL_MAX_VERTEX_ATTRIB_BINDINGS</constant>,
|
|
or <constant>GL_MAX_VERTEX_ATTRIB_RELATIVE_OFFSET</constant>.
|
|
</para>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGetVertexAttrib</refentrytitle></citerefentry> with argument <constant>GL_VERTEX_ATTRIB_RELATIVE_OFFSET</constant>.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="seealso"><title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glBindVertexBuffer</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glVertexAttribBinding</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glVertexAttribPointer</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glVertexBindingDivisor</refentrytitle></citerefentry>,
|
|
<citerefentry><refentrytitle>glVertexAttribPointer</refentrytitle></citerefentry>.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="Copyright"><title>Copyright</title>
|
|
<para>
|
|
Copyright <trademark class="copyright"></trademark> 2012 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>
|