mirror of
https://github.com/Ryujinx/Opentk.git
synced 2024-12-24 17:05:37 +00:00
234 lines
10 KiB
XML
234 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="glPointParameter">
|
|
<refmeta>
|
|
<refmetainfo>
|
|
<copyright>
|
|
<year>1991-2006</year>
|
|
<holder>Silicon Graphics, Inc.</holder>
|
|
</copyright>
|
|
</refmetainfo>
|
|
<refentrytitle>glPointParameter</refentrytitle>
|
|
<manvolnum>3G</manvolnum>
|
|
</refmeta>
|
|
<refnamediv>
|
|
<refname>glPointParameter</refname>
|
|
<refpurpose>specify point parameters</refpurpose>
|
|
</refnamediv>
|
|
<refsynopsisdiv><title>C Specification</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glPointParameterf</function></funcdef>
|
|
<paramdef>GLenum <parameter>pname</parameter></paramdef>
|
|
<paramdef>GLfloat <parameter>param</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<para></para>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glPointParameteri</function></funcdef>
|
|
<paramdef>GLenum <parameter>pname</parameter></paramdef>
|
|
<paramdef>GLint <parameter>param</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
<!-- eqn: ignoring delim $$ -->
|
|
<refsect1 id="parameters"><title>Parameters</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>pname</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies a single-valued point parameter.
|
|
<constant>GL_POINT_SIZE_MIN</constant>,
|
|
<constant>GL_POINT_SIZE_MAX</constant>,
|
|
<constant>GL_POINT_FADE_THRESHOLD_SIZE</constant>, and
|
|
<constant>GL_POINT_SPRITE_COORD_ORIGIN</constant>
|
|
are accepted.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>param</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the value that <parameter>pname</parameter> will be set to.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsynopsisdiv><title>C Specification</title>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glPointParameterfv</function></funcdef>
|
|
<paramdef>GLenum <parameter>pname</parameter></paramdef>
|
|
<paramdef>const GLfloat * <parameter>params</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
<para></para>
|
|
<funcsynopsis>
|
|
<funcprototype>
|
|
<funcdef>void <function>glPointParameteriv</function></funcdef>
|
|
<paramdef>GLenum <parameter>pname</parameter></paramdef>
|
|
<paramdef>const GLint * <parameter>params</parameter></paramdef>
|
|
</funcprototype>
|
|
</funcsynopsis>
|
|
</refsynopsisdiv>
|
|
<refsect1 id="parameters2"><title>Parameters</title>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><parameter>pname</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies a point parameter.
|
|
<constant>GL_POINT_SIZE_MIN</constant>,
|
|
<constant>GL_POINT_SIZE_MAX</constant>,
|
|
<constant>GL_POINT_DISTANCE_ATTENUATION</constant>,
|
|
<constant>GL_POINT_FADE_THRESHOLD_SIZE</constant>, and
|
|
<constant>GL_POINT_SPRITE_COORD_ORIGIN</constant>
|
|
are accepted.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><parameter>params</parameter></term>
|
|
<listitem>
|
|
<para>
|
|
Specifies the value or values to be assigned to <parameter>pname</parameter>.
|
|
<constant>GL_POINT_DISTANCE_ATTENUATION</constant> requires an array of three values.
|
|
All other parameters accept an array containing only a single value.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 id="description"><title>Description</title>
|
|
<para>
|
|
The following values are accepted for <parameter>pname</parameter>:
|
|
</para>
|
|
<variablelist>
|
|
<varlistentry>
|
|
<term><constant>GL_POINT_SIZE_MIN</constant></term>
|
|
<listitem>
|
|
<para>
|
|
</para>
|
|
<para>
|
|
<parameter>params</parameter> is a single floating-point value that specifies the minimum point size. The default value is 0.0.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_POINT_SIZE_MAX</constant></term>
|
|
<listitem>
|
|
<para>
|
|
</para>
|
|
<para>
|
|
<parameter>params</parameter> is a single floating-point value that specifies the maximum point size. The default value is 1.0.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_POINT_FADE_THRESHOLD_SIZE</constant></term>
|
|
<listitem>
|
|
<para>
|
|
</para>
|
|
<para>
|
|
<parameter>params</parameter> is a single floating-point value that specifies the threshold value
|
|
to which point sizes are clamped if they exceed the specified value. The
|
|
default value is 1.0.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_POINT_DISTANCE_ATTENUATION</constant></term>
|
|
<listitem>
|
|
<para>
|
|
</para>
|
|
<para>
|
|
<parameter>params</parameter> is an array of three floating-point values that specify the
|
|
coefficients used for scaling the computed point size. The default values
|
|
are
|
|
<inlineequation><mml:math>
|
|
<!-- eqn: (1, 0, 0):-->
|
|
<mml:mfenced open="(" close=")">
|
|
<mml:mn>1</mml:mn>
|
|
<mml:mn>0</mml:mn>
|
|
<mml:mn>0</mml:mn>
|
|
</mml:mfenced>
|
|
</mml:math></inlineequation>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term><constant>GL_POINT_SPRITE_COORD_ORIGIN</constant></term>
|
|
<listitem>
|
|
<para>
|
|
</para>
|
|
<para>
|
|
<parameter>params</parameter> is a single enum specifying the point sprite texture coordinate origin, either <constant>GL_LOWER_LEFT</constant> or <constant>GL_UPPER_LEFT</constant>.
|
|
The default value is <constant>GL_UPPER_LEFT</constant>.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</refsect1>
|
|
<refsect1 id="notes"><title>Notes</title>
|
|
<para>
|
|
<function>glPointParameter</function> is available only if the GL version is 1.4 or greater.
|
|
</para>
|
|
<para>
|
|
<constant>GL_POINT_SPRITE_COORD_ORIGIN</constant> is available only if the GL version is 2.0 or greater.
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="errors"><title>Errors</title>
|
|
<para>
|
|
<constant>GL_INVALID_VALUE</constant> is generated If the value specified for
|
|
<constant>GL_POINT_SIZE_MIN</constant>, <constant>GL_POINT_SIZE_MAX</constant>, or
|
|
<constant>GL_POINT_FADE_THRESHOLD_SIZE</constant> is less than zero.
|
|
</para>
|
|
<para>
|
|
<constant>GL_INVALID_ENUM</constant> is generated If the value specified for
|
|
<constant>GL_POINT_SPRITE_COORD_ORIGIN</constant> is not <constant>GL_LOWER_LEFT</constant> or <constant>GL_UPPER_LEFT</constant>.
|
|
</para>
|
|
<para>
|
|
If the value for <constant>GL_POINT_SIZE_MIN</constant> is greater than
|
|
<constant>GL_POINT_SIZE_MAX</constant>, the point size after clamping is undefined, but no
|
|
error is generated.
|
|
</para>
|
|
<para>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="associatedgets"><title>Associated Gets</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POINT_SIZE_MIN</constant>
|
|
</para>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POINT_SIZE_MAX</constant>
|
|
</para>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POINT_FADE_THRESHOLD_SIZE</constant>
|
|
</para>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POINT_DISTANCE_ATTENUATION</constant>
|
|
</para>
|
|
<para>
|
|
<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_POINT_SPRITE_COORD_ORIGIN</constant>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="seealso"><title>See Also</title>
|
|
<para>
|
|
<citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>
|
|
</para>
|
|
</refsect1>
|
|
<refsect1 id="Copyright"><title>Copyright</title>
|
|
<para>
|
|
Copyright <trademark class="copyright"></trademark> 1991-2006
|
|
Silicon Graphics, Inc. This document is licensed under the SGI
|
|
Free Software B License. For details, see
|
|
<ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
|
|
</para>
|
|
</refsect1>
|
|
</refentry>
|