mirror of
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4898 lines
232 KiB
XML
4898 lines
232 KiB
XML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
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"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
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<refentry id="glGet">
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<refmeta>
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<refmetainfo>
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<copyright>
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<year>1991-2006</year>
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<holder>Silicon Graphics, Inc.</holder>
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</copyright>
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</refmetainfo>
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<refentrytitle>glGet</refentrytitle>
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<manvolnum>3G</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>glGet</refname>
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<refpurpose>return the value or values of a selected parameter</refpurpose>
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</refnamediv>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glGetBooleanv</function></funcdef>
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<paramdef>GLenum <parameter>pname</parameter></paramdef>
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<paramdef>GLboolean * <parameter>params</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glGetDoublev</function></funcdef>
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<paramdef>GLenum <parameter>pname</parameter></paramdef>
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<paramdef>GLdouble * <parameter>params</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glGetFloatv</function></funcdef>
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<paramdef>GLenum <parameter>pname</parameter></paramdef>
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<paramdef>GLfloat * <parameter>params</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<refsynopsisdiv><title>C Specification</title>
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<funcsynopsis>
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<funcprototype>
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<funcdef>void <function>glGetIntegerv</function></funcdef>
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<paramdef>GLenum <parameter>pname</parameter></paramdef>
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<paramdef>GLint * <parameter>params</parameter></paramdef>
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</funcprototype>
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</funcsynopsis>
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</refsynopsisdiv>
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<!-- eqn: ignoring delim $$ -->
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<refsect1 id="parameters"><title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><parameter>pname</parameter></term>
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<listitem>
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<para>
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Specifies the parameter value to be returned.
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The symbolic constants in the list below are accepted.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>params</parameter></term>
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<listitem>
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<para>
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Returns the value or values of the specified parameter.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1 id="description"><title>Description</title>
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<para>
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These four commands return values for simple state variables in GL.
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<parameter>pname</parameter> is a symbolic constant indicating the state variable to be returned,
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and <parameter>params</parameter> is a pointer to an array of the indicated type in
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which to place the returned data.
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</para>
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<para>
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Type conversion is performed if <parameter>params</parameter> has a different type than
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the state variable value being requested.
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If <function>glGetBooleanv</function> is called,
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a floating-point (or integer) value is converted to <constant>GL_FALSE</constant> if
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and only if it is 0.0 (or 0).
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Otherwise,
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it is converted to <constant>GL_TRUE</constant>.
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If <function>glGetIntegerv</function> is called, boolean values are returned as
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<constant>GL_TRUE</constant> or <constant>GL_FALSE</constant>, and most floating-point values are
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rounded to the nearest integer value. Floating-point colors and
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normals, however, are returned with a linear mapping that maps 1.0 to
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the most positive representable integer value
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and
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<inlineequation><mml:math>
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<!-- eqn: -1.0:-->
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<mml:mn>-1.0</mml:mn>
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</mml:math></inlineequation>
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to the most negative representable integer value.
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If <function>glGetFloatv</function> or <function>glGetDoublev</function> is called,
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boolean values are returned as <constant>GL_TRUE</constant> or <constant>GL_FALSE</constant>,
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and integer values are converted to floating-point values.
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</para>
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<para>
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The following symbolic constants are accepted by <parameter>pname</parameter>:
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</para>
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<variablelist>
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<varlistentry>
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<term><constant>GL_ACCUM_ALPHA_BITS</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the number of alpha bitplanes in the accumulation buffer.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ACCUM_BLUE_BITS</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the number of blue bitplanes in the accumulation buffer.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ACCUM_CLEAR_VALUE</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns four values:
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the red, green, blue, and alpha values used to clear the accumulation buffer.
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Integer values,
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if requested,
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are linearly mapped from the internal floating-point representation such
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that 1.0 returns the most positive representable integer value,
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and
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<inlineequation><mml:math>
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<!-- eqn: -1.0:-->
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<mml:mn>-1.0</mml:mn>
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</mml:math></inlineequation>
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returns the most negative representable integer
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value. The initial value is (0, 0, 0, 0).
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See <citerefentry><refentrytitle>glClearAccum</refentrytitle></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ACCUM_GREEN_BITS</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the number of green bitplanes in the accumulation buffer.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ACCUM_RED_BITS</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the number of red bitplanes in the accumulation buffer.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ACTIVE_TEXTURE</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns a single value indicating the active multitexture unit.
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The initial value is <constant>GL_TEXTURE0</constant>.
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See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ALIASED_POINT_SIZE_RANGE</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns two values,
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the smallest and largest supported sizes for aliased points.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ALIASED_LINE_WIDTH_RANGE</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns two values,
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the smallest and largest supported widths for aliased lines.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ALPHA_BIAS</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the alpha bias factor used during pixel transfers. The initial value is 0.
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See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ALPHA_BITS</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the number of alpha bitplanes in each color buffer.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ALPHA_SCALE</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the alpha scale factor used
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during pixel transfers. The initial value is 1.
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See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ALPHA_TEST</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns a single boolean value indicating whether alpha testing
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of fragments is enabled. The initial value is <constant>GL_FALSE</constant>.
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See <citerefentry><refentrytitle>glAlphaFunc</refentrytitle></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ALPHA_TEST_FUNC</constant> <parameter>params</parameter> returns one value,</term>
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<listitem>
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<para>
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</para>
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<para>
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the symbolic name of the alpha test function. The initial value is
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<constant>GL_ALWAYS</constant>.
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See <citerefentry><refentrytitle>glAlphaFunc</refentrytitle></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ALPHA_TEST_REF</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the reference value for the alpha test. The initial value is 0.
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See <citerefentry><refentrytitle>glAlphaFunc</refentrytitle></citerefentry>.
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An integer value,
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if requested,
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is linearly mapped from the internal floating-point representation such
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that 1.0 returns the most positive representable integer value,
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and
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<inlineequation><mml:math>
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|
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<!-- eqn: -1.0:-->
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<mml:mn>-1.0</mml:mn>
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</mml:math></inlineequation>
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returns the most negative representable integer value.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ARRAY_BUFFER_BINDING</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns a single value, the name of the buffer object
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currently bound to the target <constant>GL_ARRAY_BUFFER</constant>. If no buffer object
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is bound to this target, 0 is returned. The initial value is 0.
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See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_ATTRIB_STACK_DEPTH</constant></term>
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns one value,
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the depth of the attribute stack.
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If the stack is empty,
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0 is returned. The initial value is 0.
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See <citerefentry><refentrytitle>glPushAttrib</refentrytitle></citerefentry>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><constant>GL_AUTO_NORMAL</constant></term>
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||
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<listitem>
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<para>
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</para>
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<para>
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<parameter>params</parameter> returns a single boolean value indicating whether 2D map evaluation
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automatically generates surface normals. The initial value is <constant>GL_FALSE</constant>.
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||
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See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
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||
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</para>
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||
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</listitem>
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||
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</varlistentry>
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||
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<varlistentry>
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||
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<term><constant>GL_AUX_BUFFERS</constant></term>
|
||
|
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<listitem>
|
||
|
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<para>
|
||
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</para>
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||
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|
<para>
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||
|
|
<parameter>params</parameter> returns one value,
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||
|
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the number of auxiliary color buffers available.
|
||
|
|
</para>
|
||
|
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</listitem>
|
||
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</varlistentry>
|
||
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<varlistentry>
|
||
|
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<term><constant>GL_BLEND</constant></term>
|
||
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<listitem>
|
||
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<para>
|
||
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</para>
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||
|
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<para>
|
||
|
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<parameter>params</parameter> returns a single boolean value indicating whether blending is
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enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry>.
|
||
|
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</para>
|
||
|
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</listitem>
|
||
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</varlistentry>
|
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<varlistentry>
|
||
|
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<term><constant>GL_BLEND_COLOR</constant></term>
|
||
|
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<listitem>
|
||
|
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<para>
|
||
|
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</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values,
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||
|
|
the red, green, blue, and alpha values which are the components of
|
||
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the blend color.
|
||
|
|
See <citerefentry><refentrytitle>glBlendColor</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLEND_DST_ALPHA</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the symbolic constant identifying the alpha destination blend
|
||
|
|
function. The initial value is <constant>GL_ZERO</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glBlendFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLEND_DST_RGB</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the symbolic constant identifying the RGB destination blend
|
||
|
|
function. The initial value is <constant>GL_ZERO</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glBlendFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLEND_EQUATION_RGB</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, a symbolic constant indicating whether
|
||
|
|
the RGB blend equation is <constant>GL_FUNC_ADD</constant>, <constant>GL_FUNC_SUBTRACT</constant>,
|
||
|
|
<constant>GL_FUNC_REVERSE_SUBTRACT</constant>, <constant>GL_MIN</constant> or <constant>GL_MAX</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glBlendEquationSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLEND_EQUATION_ALPHA</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, a symbolic constant indicating whether
|
||
|
|
the Alpha blend equation is <constant>GL_FUNC_ADD</constant>, <constant>GL_FUNC_SUBTRACT</constant>,
|
||
|
|
<constant>GL_FUNC_REVERSE_SUBTRACT</constant>, <constant>GL_MIN</constant> or <constant>GL_MAX</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glBlendEquationSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLEND_SRC_ALPHA</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the symbolic constant identifying the alpha source blend function. The initial
|
||
|
|
value is <constant>GL_ONE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glBlendFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLEND_SRC_RGB</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the symbolic constant identifying the RGB source blend function. The initial
|
||
|
|
value is <constant>GL_ONE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glBlendFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glBlendFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLUE_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the blue bias factor used during pixel transfers. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLUE_BITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of blue bitplanes in each color buffer.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_BLUE_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the blue scale factor used during pixel transfers. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CLIENT_ACTIVE_TEXTURE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single integer value indicating the current client active
|
||
|
|
multitexture unit. The initial value is <constant>GL_TEXTURE0</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glClientActiveTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CLIENT_ATTRIB_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value indicating the depth of the
|
||
|
|
attribute stack. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPushClientAttrib</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CLIP_PLANE</constant><emphasis>i</emphasis></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the specified
|
||
|
|
clipping plane is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glClipPlane</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_ARRAY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the color array is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
associated with the color array. This buffer object would have been bound to the
|
||
|
|
target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to
|
||
|
|
<citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>.
|
||
|
|
If no buffer object was bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_ARRAY_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of components per color in the color array. The initial value
|
||
|
|
is 4.
|
||
|
|
See <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_ARRAY_STRIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte offset between consecutive colors in the color array. The initial
|
||
|
|
value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_ARRAY_TYPE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the data type of each component in the color array. The initial value
|
||
|
|
is <constant>GL_FLOAT</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glColorPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_CLEAR_VALUE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the red, green, blue, and alpha values used to clear the color buffers.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer
|
||
|
|
value. The initial value is (0, 0, 0, 0).
|
||
|
|
See <citerefentry><refentrytitle>glClearColor</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_LOGIC_OP</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether a fragment's
|
||
|
|
RGBA color values are merged into the framebuffer using a logical
|
||
|
|
operation. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_MATERIAL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether one or more
|
||
|
|
material parameters are tracking the current color. The initial value
|
||
|
|
is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glColorMaterial</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_MATERIAL_FACE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating which materials have a parameter that is
|
||
|
|
tracking the current color. The initial value is <constant>GL_FRONT_AND_BACK</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glColorMaterial</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_MATERIAL_PARAMETER</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating which material parameters are
|
||
|
|
tracking the current color. The initial value is
|
||
|
|
<constant>GL_AMBIENT_AND_DIFFUSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glColorMaterial</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_MATRIX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns sixteen values:
|
||
|
|
the color matrix on the top of the color matrix stack. Initially
|
||
|
|
this matrix is the identity matrix.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_MATRIX_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum supported depth of the projection matrix stack. The value must
|
||
|
|
be at least 2.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_SUM</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether primary and
|
||
|
|
secondary color sum is enabled.
|
||
|
|
See <citerefentry><refentrytitle>glSecondaryColor</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_TABLE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the color table
|
||
|
|
lookup is enabled.
|
||
|
|
See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COLOR_WRITEMASK</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four boolean values:
|
||
|
|
the red, green, blue, and alpha write enables for the color
|
||
|
|
buffers. The initial value is (<constant>GL_TRUE</constant>, <constant>GL_TRUE</constant>,
|
||
|
|
<constant>GL_TRUE</constant>, <constant>GL_TRUE</constant>).
|
||
|
|
See <citerefentry><refentrytitle>glColorMask</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_COMPRESSED_TEXTURE_FORMATS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a list of symbolic
|
||
|
|
constants of length <constant>GL_NUM_COMPRESSED_TEXTURE_FORMATS</constant>
|
||
|
|
indicating which compressed texture formats are available.
|
||
|
|
See <citerefentry><refentrytitle>glCompressedTexImage2D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CONVOLUTION_1D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether 1D convolution
|
||
|
|
is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glConvolutionFilter1D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CONVOLUTION_2D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether 2D convolution
|
||
|
|
is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glConvolutionFilter2D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CULL_FACE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether polygon culling
|
||
|
|
is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glCullFace</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CULL_FACE_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating which polygon faces are to be
|
||
|
|
culled. The initial value is <constant>GL_BACK</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glCullFace</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_COLOR</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the red, green, blue, and alpha values of the current color.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer value.
|
||
|
|
The initial value is (1, 1, 1, 1).
|
||
|
|
See <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_FOG_COORD</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the current fog coordinate. The initial value
|
||
|
|
is 0.
|
||
|
|
See <citerefentry><refentrytitle>glFogCoord</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_INDEX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the current color index. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glIndex</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_NORMAL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns three values:
|
||
|
|
the <emphasis>x</emphasis>, <emphasis>y</emphasis>, and <emphasis>z</emphasis> values of the current normal.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer value.
|
||
|
|
The initial value is (0, 0, 1).
|
||
|
|
See <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_PROGRAM</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the name of the program object that is currently active, or 0 if no program object is active.
|
||
|
|
See <citerefentry><refentrytitle>glUseProgram</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_RASTER_COLOR</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the red, green, blue, and alpha color values of the current raster position.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer
|
||
|
|
value. The initial value is (1, 1, 1, 1).
|
||
|
|
See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_RASTER_DISTANCE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the distance from the eye to the current
|
||
|
|
raster position. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_RASTER_INDEX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the color index of the current raster position. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_RASTER_POSITION</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the <emphasis>x</emphasis>, <emphasis>y</emphasis>, <emphasis>z</emphasis>, and <emphasis>w</emphasis> components of the current
|
||
|
|
raster position.
|
||
|
|
<emphasis>x</emphasis>, <emphasis>y</emphasis>, and <emphasis>z</emphasis> are in window coordinates,
|
||
|
|
and <emphasis>w</emphasis> is in clip coordinates. The initial value is (0, 0, 0, 1).
|
||
|
|
See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_RASTER_POSITION_VALID</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the current
|
||
|
|
raster position is valid. The initial value is <constant>GL_TRUE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_RASTER_SECONDARY_COLOR</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the red, green, blue, and alpha secondary color values of the current raster position.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer
|
||
|
|
value. The initial value is (1, 1, 1, 1).
|
||
|
|
See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_RASTER_TEXTURE_COORDS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values: the <emphasis>s</emphasis>, <emphasis>t</emphasis>, <emphasis>r</emphasis>, and <emphasis>q</emphasis>
|
||
|
|
texture coordinates of the current raster position. The initial value is (0, 0, 0, 1).
|
||
|
|
See <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_SECONDARY_COLOR</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values: the red, green, blue, and alpha values of the
|
||
|
|
current secondary color. Integer values, if requested, are linearly mapped
|
||
|
|
from the internal floating-point representation such that 1.0 returns the
|
||
|
|
most positive representable integer value, and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most
|
||
|
|
negative representable integer value. The initial value is (0, 0, 0, 0).
|
||
|
|
See <citerefentry><refentrytitle>glSecondaryColor</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_CURRENT_TEXTURE_COORDS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the <emphasis>s</emphasis>, <emphasis>t</emphasis>, <emphasis>r</emphasis>, and <emphasis>q</emphasis> current texture
|
||
|
|
coordinates. The initial value is (0, 0, 0, 1).
|
||
|
|
See <citerefentry><refentrytitle>glMultiTexCoord</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DEPTH_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the depth bias factor used during pixel transfers. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DEPTH_BITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of bitplanes in the depth buffer.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DEPTH_CLEAR_VALUE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the value that is used to clear the depth buffer.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer
|
||
|
|
value. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glClearDepth</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DEPTH_FUNC</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the symbolic constant that indicates the depth comparison
|
||
|
|
function. The initial value is <constant>GL_LESS</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glDepthFunc</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DEPTH_RANGE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values:
|
||
|
|
the near and far mapping limits for the depth buffer.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer
|
||
|
|
value. The initial value is (0, 1).
|
||
|
|
See <citerefentry><refentrytitle>glDepthRange</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DEPTH_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the depth scale factor used during pixel transfers. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DEPTH_TEST</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether depth testing
|
||
|
|
of fragments is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glDepthFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glDepthRange</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DEPTH_WRITEMASK</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating if the depth buffer
|
||
|
|
is enabled for writing. The initial value is <constant>GL_TRUE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glDepthMask</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DITHER</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether dithering of
|
||
|
|
fragment colors and indices is enabled. The initial value is <constant>GL_TRUE</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DOUBLEBUFFER</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether double buffering
|
||
|
|
is supported.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DRAW_BUFFER</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating which buffers are being drawn to.
|
||
|
|
See <citerefentry><refentrytitle>glDrawBuffer</refentrytitle></citerefentry>. The initial value is <constant>GL_BACK</constant> if there
|
||
|
|
are back buffers, otherwise it is <constant>GL_FRONT</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_DRAW_BUFFER</constant><emphasis>i</emphasis></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating which buffers are being drawn to by the corresponding output color.
|
||
|
|
See <citerefentry><refentrytitle>glDrawBuffers</refentrytitle></citerefentry>.
|
||
|
|
The initial value of <constant>GL_DRAW_BUFFER0</constant> is <constant>GL_BACK</constant> if there
|
||
|
|
are back buffers, otherwise it is <constant>GL_FRONT</constant>. The
|
||
|
|
initial values of draw buffers for all other output colors is <constant>GL_NONE</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_EDGE_FLAG</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the current
|
||
|
|
edge flag is <constant>GL_TRUE</constant> or <constant>GL_FALSE</constant>. The initial value is <constant>GL_TRUE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glEdgeFlag</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_EDGE_FLAG_ARRAY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the edge
|
||
|
|
flag array is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glEdgeFlagPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_EDGE_FLAG_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
associated with the edge flag array. This buffer object would have been bound to the
|
||
|
|
target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to
|
||
|
|
<citerefentry><refentrytitle>glEdgeFlagPointer</refentrytitle></citerefentry>.
|
||
|
|
If no buffer object was bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_EDGE_FLAG_ARRAY_STRIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte offset between consecutive edge flags in the edge flag
|
||
|
|
array. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glEdgeFlagPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_ELEMENT_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
currently bound to the target <constant>GL_ELEMENT_ARRAY_BUFFER</constant>. If no buffer object
|
||
|
|
is bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FEEDBACK_BUFFER_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the size of the feedback buffer.
|
||
|
|
See <citerefentry><refentrytitle>glFeedbackBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FEEDBACK_BUFFER_TYPE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the type of the feedback buffer.
|
||
|
|
See <citerefentry><refentrytitle>glFeedbackBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether fogging is
|
||
|
|
enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_COORD_ARRAY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the fog coordinate array is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_COORD_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
associated with the fog coordinate array. This buffer object would have been bound to the
|
||
|
|
target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to
|
||
|
|
<citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
If no buffer object was bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_COORD_ARRAY_STRIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte offset between consecutive fog coordinates in the fog coordinate
|
||
|
|
array. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_COORD_ARRAY_TYPE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the type of the fog coordinate array.
|
||
|
|
The initial value is <constant>GL_FLOAT</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glFogCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_COORD_SRC</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, a symbolic constant indicating the source of the fog coordinate.
|
||
|
|
The initial value is <constant>GL_FRAGMENT_DEPTH</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_COLOR</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the red, green, blue, and alpha components of the fog color.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer
|
||
|
|
value. The initial value is (0, 0, 0, 0).
|
||
|
|
See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_DENSITY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the fog density parameter. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_END</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the end factor for the linear fog equation. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_HINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the mode of the fog hint. The initial value
|
||
|
|
is <constant>GL_DONT_CARE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_INDEX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the fog color index. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating which fog equation is selected. The initial
|
||
|
|
value is <constant>GL_EXP</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FOG_START</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the start factor for the linear fog equation. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glFog</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FRAGMENT_SHADER_DERIVATIVE_HINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the mode of the derivative accuracy hint
|
||
|
|
for fragment shaders. The initial value
|
||
|
|
is <constant>GL_DONT_CARE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_FRONT_FACE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating whether clockwise or counterclockwise
|
||
|
|
polygon winding is treated as front-facing. The initial value is
|
||
|
|
<constant>GL_CCW</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glFrontFace</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_GENERATE_MIPMAP_HINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the mode of the mipmap generation filtering
|
||
|
|
hint. The initial value is <constant>GL_DONT_CARE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_GREEN_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the green bias factor used during pixel transfers. The initial value is 0.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_GREEN_BITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of green bitplanes in each color buffer.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_GREEN_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the green scale factor used during pixel transfers. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_HISTOGRAM</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether histogram is
|
||
|
|
enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glHistogram</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_ARRAY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the color
|
||
|
|
index array is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
associated with the color index array. This buffer object would have been bound to the
|
||
|
|
target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to
|
||
|
|
<citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>.
|
||
|
|
If no buffer object was bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_ARRAY_STRIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte offset between consecutive color indexes in the color index
|
||
|
|
array. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_ARRAY_TYPE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the data type of indexes in the color index array. The initial value is
|
||
|
|
<constant>GL_FLOAT</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glIndexPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_BITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of bitplanes in each color index buffer.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_CLEAR_VALUE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the color index used to clear the color index buffers. The initial value
|
||
|
|
is 0.
|
||
|
|
See <citerefentry><refentrytitle>glClearIndex</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_LOGIC_OP</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether a fragment's index
|
||
|
|
values are merged into the framebuffer using a logical
|
||
|
|
operation. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the GL is in
|
||
|
|
color index mode (<constant>GL_TRUE</constant>) or RGBA mode (<constant>GL_FALSE</constant>).
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_OFFSET</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the offset added to color and stencil indices during pixel
|
||
|
|
transfers. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_SHIFT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the amount that color and stencil indices are shifted during pixel
|
||
|
|
transfers. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_INDEX_WRITEMASK</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a mask indicating which bitplanes of each color index buffer can be
|
||
|
|
written. The initial value is all 1's.
|
||
|
|
See <citerefentry><refentrytitle>glIndexMask</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIGHT</constant><emphasis>i</emphasis></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the specified
|
||
|
|
light is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLight</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIGHTING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether lighting is
|
||
|
|
enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIGHT_MODEL_AMBIENT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the red, green, blue, and alpha components of the ambient intensity of
|
||
|
|
the entire scene.
|
||
|
|
Integer values,
|
||
|
|
if requested,
|
||
|
|
are linearly mapped from the internal floating-point representation such
|
||
|
|
that 1.0 returns the most positive representable integer value,
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math>
|
||
|
|
<!-- eqn: -1.0:-->
|
||
|
|
<mml:mn>-1.0</mml:mn>
|
||
|
|
</mml:math></inlineequation>
|
||
|
|
returns the most negative representable integer
|
||
|
|
value. The initial value is (0.2, 0.2, 0.2, 1.0).
|
||
|
|
See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIGHT_MODEL_COLOR_CONTROL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns single enumerated value indicating whether specular
|
||
|
|
reflection calculations are separated from normal lighting computations.
|
||
|
|
The initial value is <constant>GL_SINGLE_COLOR</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIGHT_MODEL_LOCAL_VIEWER</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether specular reflection
|
||
|
|
calculations treat the viewer as being local to the scene. The initial
|
||
|
|
value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIGHT_MODEL_TWO_SIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether separate materials
|
||
|
|
are used to compute lighting for front- and back-facing
|
||
|
|
polygons. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLightModel</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LINE_SMOOTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether antialiasing of
|
||
|
|
lines is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LINE_SMOOTH_HINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the mode of the line antialiasing
|
||
|
|
hint. The initial value is <constant>GL_DONT_CARE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LINE_STIPPLE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether stippling of lines
|
||
|
|
is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLineStipple</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LINE_STIPPLE_PATTERN</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the 16-bit line stipple pattern. The initial value is all 1's.
|
||
|
|
See <citerefentry><refentrytitle>glLineStipple</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LINE_STIPPLE_REPEAT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the line stipple repeat factor. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glLineStipple</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LINE_WIDTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the line width as specified with <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>. The initial value is
|
||
|
|
1.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LINE_WIDTH_GRANULARITY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the width difference between adjacent supported widths for antialiased lines.
|
||
|
|
See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LINE_WIDTH_RANGE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values:
|
||
|
|
the smallest and largest supported widths for antialiased
|
||
|
|
lines.
|
||
|
|
See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIST_BASE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the base offset added to all names in arrays presented to
|
||
|
|
<citerefentry><refentrytitle>glCallLists</refentrytitle></citerefentry>. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glListBase</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIST_INDEX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the name of the display list currently under construction.
|
||
|
|
0 is returned if no display list is currently under
|
||
|
|
construction. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glNewList</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LIST_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the construction mode of the display list
|
||
|
|
currently under construction. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glNewList</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_LOGIC_OP_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the selected logic operation
|
||
|
|
mode. The initial value is <constant>GL_COPY</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glLogicOp</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_COLOR_4</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates colors. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_GRID_DOMAIN</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values:
|
||
|
|
the endpoints of the 1D map's grid domain. The initial value is (0, 1).
|
||
|
|
See <citerefentry><refentrytitle>glMapGrid</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_GRID_SEGMENTS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of partitions in the 1D map's grid domain. The initial value
|
||
|
|
is 1.
|
||
|
|
See <citerefentry><refentrytitle>glMapGrid</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_INDEX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates color indices. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_NORMAL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates normals. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_TEXTURE_COORD_1</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates 1D texture coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_TEXTURE_COORD_2</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates 2D texture coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_TEXTURE_COORD_3</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates 3D texture coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_TEXTURE_COORD_4</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates 4D texture coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_VERTEX_3</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates 3D vertex coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP1_VERTEX_4</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
1D evaluation generates 4D vertex coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_COLOR_4</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates colors. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_GRID_DOMAIN</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the endpoints of the 2D map's
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">i</mml:mi></mml:math></inlineequation>
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">j</mml:mi></mml:math></inlineequation>
|
||
|
|
grid domains. The initial value
|
||
|
|
is (0,1; 0,1).
|
||
|
|
See <citerefentry><refentrytitle>glMapGrid</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_GRID_SEGMENTS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values:
|
||
|
|
the number of partitions in the 2D map's
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">i</mml:mi></mml:math></inlineequation>
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">j</mml:mi></mml:math></inlineequation>
|
||
|
|
grid
|
||
|
|
domains. The initial value is (1,1).
|
||
|
|
See <citerefentry><refentrytitle>glMapGrid</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_INDEX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates color indices. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_NORMAL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates normals. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_TEXTURE_COORD_1</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates 1D texture coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_TEXTURE_COORD_2</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates 2D texture coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_TEXTURE_COORD_3</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates 3D texture coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_TEXTURE_COORD_4</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates 4D texture coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_VERTEX_3</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates 3D vertex coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP2_VERTEX_4</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether
|
||
|
|
2D evaluation generates 4D vertex coordinates. The initial value is
|
||
|
|
<constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP_COLOR</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating if colors and
|
||
|
|
color indices are to be replaced by table lookup during pixel
|
||
|
|
transfers. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAP_STENCIL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating if stencil indices
|
||
|
|
are to be replaced by table lookup during pixel transfers. The initial
|
||
|
|
value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MATRIX_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating which matrix stack is currently the
|
||
|
|
target of all matrix operations. The initial value is <constant>GL_MODELVIEW</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMatrixMode</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_3D_TEXTURE_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a rough estimate of the largest 3D texture that the GL can handle.
|
||
|
|
The value must be at least 16.
|
||
|
|
If the GL version is 1.2 or greater, use
|
||
|
|
<constant>GL_PROXY_TEXTURE_3D</constant> to determine if a texture is too large.
|
||
|
|
See <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_CLIENT_ATTRIB_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value indicating the maximum supported depth
|
||
|
|
of the client attribute stack.
|
||
|
|
See <citerefentry><refentrytitle>glPushClientAttrib</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_ATTRIB_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum supported depth of the attribute stack. The value must be
|
||
|
|
at least 16.
|
||
|
|
See <citerefentry><refentrytitle>glPushAttrib</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_CLIP_PLANES</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum number of application-defined clipping planes. The value must be at least 6.
|
||
|
|
See <citerefentry><refentrytitle>glClipPlane</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_COLOR_MATRIX_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the maximum supported depth of the color matrix
|
||
|
|
stack. The value must be at least 2.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the maximum supported texture image units that
|
||
|
|
can be used to access texture maps from the vertex shader and the fragment processor combined.
|
||
|
|
If both the vertex shader and the fragment processing stage access the same texture image
|
||
|
|
unit, then that counts as using two texture image units against this limit.
|
||
|
|
The value must be at least 2.
|
||
|
|
See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_CUBE_MAP_TEXTURE_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value.
|
||
|
|
The value gives a rough estimate of the largest cube-map texture that
|
||
|
|
the GL can handle. The value must be at least 16.
|
||
|
|
If the GL version is 1.3 or greater, use <constant>GL_PROXY_TEXTURE_CUBE_MAP</constant>
|
||
|
|
to determine if a texture is too large.
|
||
|
|
See <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_DRAW_BUFFERS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the maximum number
|
||
|
|
of simultaneous output colors allowed from a fragment shader using the
|
||
|
|
<code>gl_FragData</code> built-in array. The value must be at least 1.
|
||
|
|
See <citerefentry><refentrytitle>glDrawBuffers</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_ELEMENTS_INDICES</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the recommended maximum number of vertex array indices.
|
||
|
|
See <citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_ELEMENTS_VERTICES</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the recommended maximum number of vertex array vertices.
|
||
|
|
See <citerefentry><refentrytitle>glDrawRangeElements</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_EVAL_ORDER</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum equation order supported by 1D and 2D
|
||
|
|
evaluators. The value must be at least 8.
|
||
|
|
See <citerefentry><refentrytitle>glMap1</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glMap2</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_FRAGMENT_UNIFORM_COMPONENTS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum number of individual floating-point, integer, or boolean values that can be held
|
||
|
|
in uniform variable storage for a fragment shader. The value must be at least 64.
|
||
|
|
See <citerefentry><refentrytitle>glUniform</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_LIGHTS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum number of lights. The value must be at least 8.
|
||
|
|
See <citerefentry><refentrytitle>glLight</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_LIST_NESTING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum recursion depth allowed during display-list
|
||
|
|
traversal. The value must be at least 64.
|
||
|
|
See <citerefentry><refentrytitle>glCallList</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_MODELVIEW_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum supported depth of the modelview matrix stack. The value must
|
||
|
|
be at least 32.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_NAME_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum supported depth of the selection name stack. The value must be at least 64.
|
||
|
|
See <citerefentry><refentrytitle>glPushName</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_PIXEL_MAP_TABLE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum supported size of a <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry> lookup table.
|
||
|
|
The value must be at least 32.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_PROJECTION_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the maximum supported depth of the projection
|
||
|
|
matrix stack. The value must be at least 2.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_TEXTURE_COORDS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum number of texture coordinate sets available to vertex and fragment shaders.
|
||
|
|
The value must be at least 2.
|
||
|
|
See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry> and
|
||
|
|
<citerefentry><refentrytitle>glClientActiveTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_TEXTURE_IMAGE_UNITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the maximum supported texture image units that
|
||
|
|
can be used to access texture maps from the fragment shader.
|
||
|
|
The value must be at least 2.
|
||
|
|
See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_TEXTURE_LOD_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum, absolute value of the texture level-of-detail bias. The
|
||
|
|
value must be at least 4.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_TEXTURE_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value.
|
||
|
|
The value gives a rough estimate of the largest texture that
|
||
|
|
the GL can handle. The value must be at least 64.
|
||
|
|
If the GL version is 1.1 or greater, use
|
||
|
|
<constant>GL_PROXY_TEXTURE_1D</constant> or <constant>GL_PROXY_TEXTURE_2D</constant>
|
||
|
|
to determine if a texture is too large.
|
||
|
|
See <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_TEXTURE_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum supported depth of the texture matrix stack. The value must be at least 2.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_TEXTURE_UNITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value indicating the number of conventional
|
||
|
|
texture units supported. Each conventional texture unit includes both a texture coordinate set
|
||
|
|
and a texture image unit. Conventional texture units may be used for fixed-function (non-shader)
|
||
|
|
rendering. The value must be at least 2. Additional texture coordinate sets and texture
|
||
|
|
image units may be accessed from vertex and fragment shaders.
|
||
|
|
See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry> and
|
||
|
|
<citerefentry><refentrytitle>glClientActiveTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_VARYING_FLOATS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum number of interpolators available for processing varying variables used by
|
||
|
|
vertex and fragment shaders. This value represents the number of individual floating-point
|
||
|
|
values that can be interpolated; varying variables declared as vectors, matrices, and arrays
|
||
|
|
will all consume multiple interpolators. The value must be at least 32.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_VERTEX_ATTRIBS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum number of 4-component generic vertex attributes accessible to a vertex shader.
|
||
|
|
The value must be at least 16.
|
||
|
|
See <citerefentry><refentrytitle>glVertexAttrib</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the maximum supported texture image units that
|
||
|
|
can be used to access texture maps from the vertex shader. The value may be 0.
|
||
|
|
See <citerefentry><refentrytitle>glActiveTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_VERTEX_UNIFORM_COMPONENTS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the maximum number of individual floating-point, integer, or boolean values that can be held
|
||
|
|
in uniform variable storage for a vertex shader. The value must be at least 512.
|
||
|
|
See <citerefentry><refentrytitle>glUniform</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MAX_VIEWPORT_DIMS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values:
|
||
|
|
the maximum supported width and height of the viewport.
|
||
|
|
These must be at least as large as the visible dimensions of the display
|
||
|
|
being rendered to.
|
||
|
|
See <citerefentry><refentrytitle>glViewport</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MINMAX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether pixel minmax
|
||
|
|
values are computed. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glMinmax</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MODELVIEW_MATRIX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns sixteen values:
|
||
|
|
the modelview matrix on the top of the modelview matrix stack. Initially
|
||
|
|
this matrix is the identity matrix.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_MODELVIEW_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of matrices on the modelview matrix stack.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_NAME_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of names on the selection name stack. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPushName</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_NORMAL_ARRAY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value, indicating whether the normal
|
||
|
|
array is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_NORMAL_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
associated with the normal array. This buffer object would have been bound to the
|
||
|
|
target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to
|
||
|
|
<citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>.
|
||
|
|
If no buffer object was bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_NORMAL_ARRAY_STRIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte offset between consecutive normals in the normal
|
||
|
|
array. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_NORMAL_ARRAY_TYPE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the data type of each coordinate in the normal array. The initial value is
|
||
|
|
<constant>GL_FLOAT</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glNormalPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_NORMALIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether normals are
|
||
|
|
automatically scaled to unit length after they have been transformed to
|
||
|
|
eye coordinates. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glNormal</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_NUM_COMPRESSED_TEXTURE_FORMATS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single integer value indicating the number of available
|
||
|
|
compressed texture formats. The minimum value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glCompressedTexImage2D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PACK_ALIGNMENT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte alignment used for writing pixel data to memory. The initial
|
||
|
|
value is 4.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PACK_IMAGE_HEIGHT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the image height used for writing pixel data to memory. The initial
|
||
|
|
value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PACK_LSB_FIRST</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether single-bit
|
||
|
|
pixels being written to memory are written first to the least significant
|
||
|
|
bit of each unsigned byte. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PACK_ROW_LENGTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the row length used for writing pixel data to memory. The initial value is
|
||
|
|
0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PACK_SKIP_IMAGES</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of pixel images skipped before the first pixel is written
|
||
|
|
into memory. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PACK_SKIP_PIXELS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of pixel locations skipped before the first pixel is written
|
||
|
|
into memory. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PACK_SKIP_ROWS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of rows of pixel locations skipped before the first pixel is written
|
||
|
|
into memory. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PACK_SWAP_BYTES</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the bytes of
|
||
|
|
two-byte and four-byte pixel indices and components are swapped before being
|
||
|
|
written to memory. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PERSPECTIVE_CORRECTION_HINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the mode of the perspective correction
|
||
|
|
hint. The initial value is <constant>GL_DONT_CARE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_A_TO_A_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the alpha-to-alpha pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_B_TO_B_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the blue-to-blue pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_G_TO_G_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the green-to-green pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_I_TO_A_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the index-to-alpha pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_I_TO_B_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the index-to-blue pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_I_TO_G_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the index-to-green pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_I_TO_I_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the index-to-index pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_I_TO_R_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the index-to-red pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_R_TO_R_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the red-to-red pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_MAP_S_TO_S_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size of the stencil-to-stencil pixel translation table.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelMap</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_PACK_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
currently bound to the target <constant>GL_PIXEL_PACK_BUFFER</constant>. If no buffer object
|
||
|
|
is bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PIXEL_UNPACK_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
currently bound to the target <constant>GL_PIXEL_UNPACK_BUFFER</constant>. If no buffer object
|
||
|
|
is bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_DISTANCE_ATTENUATION</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns three values,
|
||
|
|
the coefficients for computing the attenuation value for points.
|
||
|
|
See <citerefentry><refentrytitle>glPointParameter</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_FADE_THRESHOLD_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the point size threshold for determining the point size.
|
||
|
|
See <citerefentry><refentrytitle>glPointParameter</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the point size as specified by <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>. The initial value is 1.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_SIZE_GRANULARITY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the size difference between adjacent supported sizes for antialiased points.
|
||
|
|
See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_SIZE_MAX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the upper bound for the attenuated point sizes. The initial value is 0.0.
|
||
|
|
See <citerefentry><refentrytitle>glPointParameter</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_SIZE_MIN</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the lower bound for the attenuated point sizes. The initial value is 1.0.
|
||
|
|
See <citerefentry><refentrytitle>glPointParameter</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_SIZE_RANGE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values:
|
||
|
|
the smallest and largest supported sizes for antialiased
|
||
|
|
points. The smallest size must be at most 1, and the largest size must
|
||
|
|
be at least 1.
|
||
|
|
See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_SMOOTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether antialiasing of
|
||
|
|
points is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_SMOOTH_HINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the mode of the point antialiasing
|
||
|
|
hint. The initial value is <constant>GL_DONT_CARE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POINT_SPRITE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether point sprite is
|
||
|
|
enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values:
|
||
|
|
symbolic constants indicating whether front-facing and back-facing polygons
|
||
|
|
are rasterized as points, lines, or filled polygons. The initial value is
|
||
|
|
<constant>GL_FILL</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPolygonMode</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_OFFSET_FACTOR</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the scaling factor used to determine the variable offset that is added
|
||
|
|
to the depth value of each fragment generated when a polygon is
|
||
|
|
rasterized. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_OFFSET_UNITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value.
|
||
|
|
This value is multiplied by an implementation-specific value and then
|
||
|
|
added to the depth value of each fragment
|
||
|
|
generated when a polygon is rasterized. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_OFFSET_FILL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether polygon offset
|
||
|
|
is enabled for polygons in fill mode. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_OFFSET_LINE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether polygon offset
|
||
|
|
is enabled for polygons in line mode. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_OFFSET_POINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether polygon offset
|
||
|
|
is enabled for polygons in point mode. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPolygonOffset</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_SMOOTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether antialiasing of
|
||
|
|
polygons is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPolygonMode</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_SMOOTH_HINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating the mode of the polygon antialiasing
|
||
|
|
hint. The initial value is <constant>GL_DONT_CARE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glHint</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POLYGON_STIPPLE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether polygon
|
||
|
|
stippling is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPolygonStipple</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_COLOR_TABLE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether post color
|
||
|
|
matrix transformation lookup is enabled.
|
||
|
|
The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_RED_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the red bias factor applied to RGBA fragments
|
||
|
|
after color matrix transformations.
|
||
|
|
The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_GREEN_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the green bias factor applied to RGBA fragments
|
||
|
|
after color matrix transformations.
|
||
|
|
The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_BLUE_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the blue bias factor applied to RGBA fragments
|
||
|
|
after color matrix transformations.
|
||
|
|
The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_ALPHA_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the alpha bias factor applied to RGBA fragments
|
||
|
|
after color matrix transformations.
|
||
|
|
The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_RED_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the red scale factor applied to RGBA fragments
|
||
|
|
after color matrix transformations.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_GREEN_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the green scale factor applied to RGBA fragments
|
||
|
|
after color matrix transformations.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_BLUE_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the blue scale factor applied to RGBA fragments
|
||
|
|
after color matrix transformations.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_COLOR_MATRIX_ALPHA_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the alpha scale factor applied to RGBA fragments
|
||
|
|
after color matrix transformations.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_COLOR_TABLE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether post convolution
|
||
|
|
lookup is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glColorTable</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_RED_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the red bias factor applied to RGBA fragments
|
||
|
|
after convolution. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_GREEN_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the green bias factor applied to RGBA fragments
|
||
|
|
after convolution. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_BLUE_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the blue bias factor applied to RGBA fragments
|
||
|
|
after convolution. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_ALPHA_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the alpha bias factor applied to RGBA fragments
|
||
|
|
after convolution. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_RED_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the red scale factor applied to RGBA fragments
|
||
|
|
after convolution. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_GREEN_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the green scale factor applied to RGBA fragments
|
||
|
|
after convolution. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_BLUE_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the blue scale factor applied to RGBA fragments
|
||
|
|
after convolution. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_POST_CONVOLUTION_ALPHA_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the alpha scale factor applied to RGBA fragments
|
||
|
|
after convolution. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PROJECTION_MATRIX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns sixteen values:
|
||
|
|
the projection matrix on the top of the projection matrix
|
||
|
|
stack. Initially this matrix is the identity matrix.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_PROJECTION_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of matrices on the projection matrix stack.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_READ_BUFFER</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating which color buffer is selected for
|
||
|
|
reading. The initial value is <constant>GL_BACK</constant> if there is a back buffer,
|
||
|
|
otherwise it is <constant>GL_FRONT</constant>.
|
||
|
|
See
|
||
|
|
<citerefentry><refentrytitle>glReadPixels</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glAccum</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_RED_BIAS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the red bias factor used during pixel transfers. The initial value is 0.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_RED_BITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of red bitplanes in each color buffer.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_RED_SCALE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the red scale factor used during pixel transfers. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_RENDER_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating whether the GL is in render,
|
||
|
|
select,
|
||
|
|
or feedback mode. The initial value is <constant>GL_RENDER</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glRenderMode</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_RESCALE_NORMAL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns single boolean value
|
||
|
|
indicating whether normal rescaling is enabled.
|
||
|
|
See <citerefentry><refentrytitle>glEnable</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_RGBA_MODE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the GL is in RGBA
|
||
|
|
mode (true) or color index mode (false).
|
||
|
|
See <citerefentry><refentrytitle>glColor</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SAMPLE_BUFFERS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single integer value indicating the number of sample buffers
|
||
|
|
associated with the framebuffer.
|
||
|
|
See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SAMPLE_COVERAGE_VALUE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single positive floating-point value indicating the
|
||
|
|
current sample coverage value.
|
||
|
|
See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SAMPLE_COVERAGE_INVERT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating if the temporary
|
||
|
|
coverage value should be inverted.
|
||
|
|
See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SAMPLES</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single integer value indicating the coverage mask size.
|
||
|
|
See <citerefentry><refentrytitle>glSampleCoverage</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SCISSOR_BOX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>
|
||
|
|
window coordinates of the scissor box,
|
||
|
|
followed by its width and height.
|
||
|
|
Initially the
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>
|
||
|
|
window coordinates are both 0 and the
|
||
|
|
width and height are set to the size of the window.
|
||
|
|
See <citerefentry><refentrytitle>glScissor</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SCISSOR_TEST</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether scissoring is
|
||
|
|
enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glScissor</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SECONDARY_COLOR_ARRAY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the secondary color array is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
associated with the secondary color array. This buffer object would have been bound to the
|
||
|
|
target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to
|
||
|
|
<citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>.
|
||
|
|
If no buffer object was bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SECONDARY_COLOR_ARRAY_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the number of components per color in the
|
||
|
|
secondary color array. The initial value is 3.
|
||
|
|
See <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SECONDARY_COLOR_ARRAY_STRIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the byte offset between consecutive colors in
|
||
|
|
the secondary color array. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SECONDARY_COLOR_ARRAY_TYPE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value, the data type of each component in the secondary
|
||
|
|
color array. The initial value is <constant>GL_FLOAT</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glSecondaryColorPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SELECTION_BUFFER_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> return one value,
|
||
|
|
the size of the selection buffer.
|
||
|
|
See <citerefentry><refentrytitle>glSelectBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SEPARABLE_2D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether 2D separable
|
||
|
|
convolution is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glSeparableFilter2D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SHADE_MODEL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating whether the shading mode is flat or
|
||
|
|
smooth. The initial value is <constant>GL_SMOOTH</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glShadeModel</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SMOOTH_LINE_WIDTH_RANGE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values,
|
||
|
|
the smallest and largest supported widths for antialiased lines.
|
||
|
|
See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SMOOTH_LINE_WIDTH_GRANULARITY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the granularity of widths for antialiased lines.
|
||
|
|
See <citerefentry><refentrytitle>glLineWidth</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SMOOTH_POINT_SIZE_RANGE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns two values,
|
||
|
|
the smallest and largest supported widths for antialiased points.
|
||
|
|
See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SMOOTH_POINT_SIZE_GRANULARITY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the granularity of sizes for antialiased points.
|
||
|
|
See <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_BACK_FAIL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating what action is taken for back-facing polygons when the stencil
|
||
|
|
test fails. The initial value is <constant>GL_KEEP</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_BACK_FUNC</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating what function is used for back-facing polygons to compare the
|
||
|
|
stencil reference value with the stencil buffer value. The initial value
|
||
|
|
is <constant>GL_ALWAYS</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_BACK_PASS_DEPTH_FAIL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating what action is taken for back-facing polygons when the stencil
|
||
|
|
test passes,
|
||
|
|
but the depth test fails. The initial value is <constant>GL_KEEP</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_BACK_PASS_DEPTH_PASS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating what action is taken for back-facing polygons when the stencil
|
||
|
|
test passes and the depth test passes. The initial value is <constant>GL_KEEP</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_BACK_REF</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the reference value that is compared with the contents of the stencil
|
||
|
|
buffer for back-facing polygons. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_BACK_VALUE_MASK</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the mask that is used for back-facing polygons to mask both the stencil reference value and the
|
||
|
|
stencil buffer value before they are compared. The initial value is all 1's.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_BACK_WRITEMASK</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the mask that controls writing of the stencil bitplanes for back-facing polygons. The initial value
|
||
|
|
is all 1's.
|
||
|
|
See <citerefentry><refentrytitle>glStencilMaskSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_BITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of bitplanes in the stencil buffer.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_CLEAR_VALUE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the index to which the stencil bitplanes are cleared. The initial value is
|
||
|
|
0.
|
||
|
|
See <citerefentry><refentrytitle>glClearStencil</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_FAIL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating what action is taken when the stencil
|
||
|
|
test fails. The initial value is <constant>GL_KEEP</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>.
|
||
|
|
If the GL version is 2.0 or greater, this stencil state only affects non-polygons
|
||
|
|
and front-facing polygons. Back-facing polygons use separate stencil state.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_FUNC</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating what function is used to compare the
|
||
|
|
stencil reference value with the stencil buffer value. The initial value
|
||
|
|
is <constant>GL_ALWAYS</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry>.
|
||
|
|
If the GL version is 2.0 or greater, this stencil state only affects non-polygons
|
||
|
|
and front-facing polygons. Back-facing polygons use separate stencil state.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_PASS_DEPTH_FAIL</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating what action is taken when the stencil
|
||
|
|
test passes,
|
||
|
|
but the depth test fails. The initial value is <constant>GL_KEEP</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>.
|
||
|
|
If the GL version is 2.0 or greater, this stencil state only affects non-polygons
|
||
|
|
and front-facing polygons. Back-facing polygons use separate stencil state.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_PASS_DEPTH_PASS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
a symbolic constant indicating what action is taken when the stencil
|
||
|
|
test passes and the depth test passes. The initial value is <constant>GL_KEEP</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>.
|
||
|
|
If the GL version is 2.0 or greater, this stencil state only affects non-polygons
|
||
|
|
and front-facing polygons. Back-facing polygons use separate stencil state.
|
||
|
|
See <citerefentry><refentrytitle>glStencilOpSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_REF</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the reference value that is compared with the contents of the stencil
|
||
|
|
buffer. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry>.
|
||
|
|
If the GL version is 2.0 or greater, this stencil state only affects non-polygons
|
||
|
|
and front-facing polygons. Back-facing polygons use separate stencil state.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_TEST</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether stencil testing
|
||
|
|
of fragments is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry> and <citerefentry><refentrytitle>glStencilOp</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_VALUE_MASK</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the mask that is used to mask both the stencil reference value and the
|
||
|
|
stencil buffer value before they are compared. The initial value is all 1's.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFunc</refentrytitle></citerefentry>.
|
||
|
|
If the GL version is 2.0 or greater, this stencil state only affects non-polygons
|
||
|
|
and front-facing polygons. Back-facing polygons use separate stencil state.
|
||
|
|
See <citerefentry><refentrytitle>glStencilFuncSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STENCIL_WRITEMASK</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the mask that controls writing of the stencil bitplanes. The initial value
|
||
|
|
is all 1's.
|
||
|
|
See <citerefentry><refentrytitle>glStencilMask</refentrytitle></citerefentry>.
|
||
|
|
If the GL version is 2.0 or greater, this stencil state only affects non-polygons
|
||
|
|
and front-facing polygons. Back-facing polygons use separate stencil state.
|
||
|
|
See <citerefentry><refentrytitle>glStencilMaskSeparate</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_STEREO</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether stereo buffers
|
||
|
|
(left and right) are supported.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_SUBPIXEL_BITS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
an estimate of the number of bits of subpixel resolution that are used to
|
||
|
|
position rasterized geometry in window coordinates. The value must be at least 4.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_1D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether 1D texture
|
||
|
|
mapping is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexImage1D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_BINDING_1D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the texture
|
||
|
|
currently bound to the target <constant>GL_TEXTURE_1D</constant>. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_2D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether 2D texture
|
||
|
|
mapping is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_BINDING_2D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the texture
|
||
|
|
currently bound to the target <constant>GL_TEXTURE_2D</constant>. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_3D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether 3D texture
|
||
|
|
mapping is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexImage3D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_BINDING_3D</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the texture
|
||
|
|
currently bound to the target <constant>GL_TEXTURE_3D</constant>. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_BINDING_CUBE_MAP</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the texture
|
||
|
|
currently bound to the target <constant>GL_TEXTURE_CUBE_MAP</constant>. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindTexture</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_COMPRESSION_HINT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value indicating the mode of the texture
|
||
|
|
compression hint. The initial value is <constant>GL_DONT_CARE</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_COORD_ARRAY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the texture
|
||
|
|
coordinate array is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
associated with the texture coordinate array. This buffer object would have been bound to the
|
||
|
|
target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to
|
||
|
|
<citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
If no buffer object was bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_COORD_ARRAY_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of coordinates per element in the texture coordinate
|
||
|
|
array. The initial value is 4.
|
||
|
|
See <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_COORD_ARRAY_STRIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte offset between consecutive elements in the texture coordinate
|
||
|
|
array. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_COORD_ARRAY_TYPE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the data type of the coordinates in the texture coordinate
|
||
|
|
array. The initial value is <constant>GL_FLOAT</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexCoordPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_CUBE_MAP</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether cube-mapped texture
|
||
|
|
mapping is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexImage2D</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_GEN_Q</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether automatic generation
|
||
|
|
of the <emphasis>q</emphasis> texture coordinate is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_GEN_R</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether automatic generation
|
||
|
|
of the <emphasis>r</emphasis> texture coordinate is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_GEN_S</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether automatic generation
|
||
|
|
of the <emphasis>S</emphasis> texture coordinate is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_GEN_T</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether automatic generation
|
||
|
|
of the T texture coordinate is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glTexGen</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_MATRIX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns sixteen values:
|
||
|
|
the texture matrix on the top of the texture matrix stack. Initially this
|
||
|
|
matrix is the identity matrix.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TEXTURE_STACK_DEPTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of matrices on the texture matrix stack.
|
||
|
|
The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPushMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TRANSPOSE_COLOR_MATRIX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns 16 values, the elements of the color matrix in row-major
|
||
|
|
order.
|
||
|
|
See <citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TRANSPOSE_MODELVIEW_MATRIX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns 16 values, the elements of the modelview matrix in row-major
|
||
|
|
order.
|
||
|
|
See <citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TRANSPOSE_PROJECTION_MATRIX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns 16 values, the elements of the projection matrix in row-major
|
||
|
|
order.
|
||
|
|
See <citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_TRANSPOSE_TEXTURE_MATRIX</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns 16 values, the elements of the texture matrix in row-major
|
||
|
|
order.
|
||
|
|
See <citerefentry><refentrytitle>glLoadTransposeMatrix</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_UNPACK_ALIGNMENT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte alignment used for reading pixel data from memory. The initial
|
||
|
|
value is 4.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_UNPACK_IMAGE_HEIGHT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the image height used for reading pixel data from memory. The initial
|
||
|
|
is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_UNPACK_LSB_FIRST</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether single-bit
|
||
|
|
pixels being read from memory are read first from the least significant
|
||
|
|
bit of each unsigned byte. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_UNPACK_ROW_LENGTH</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the row length used for reading pixel data from memory. The initial value
|
||
|
|
is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_UNPACK_SKIP_IMAGES</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of pixel images skipped before the first pixel is read
|
||
|
|
from memory. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_UNPACK_SKIP_PIXELS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of pixel locations skipped before the first pixel is read
|
||
|
|
from memory. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_UNPACK_SKIP_ROWS</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of rows of pixel locations skipped before the first pixel is read
|
||
|
|
from memory. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_UNPACK_SWAP_BYTES</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the bytes of
|
||
|
|
two-byte and four-byte pixel indices and components are swapped after being
|
||
|
|
read from memory. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_VERTEX_ARRAY</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether the vertex
|
||
|
|
array is enabled. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_VERTEX_ARRAY_BUFFER_BINDING</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single value, the name of the buffer object
|
||
|
|
associated with the vertex array. This buffer object would have been bound to the
|
||
|
|
target <constant>GL_ARRAY_BUFFER</constant> at the time of the most recent call to
|
||
|
|
<citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>.
|
||
|
|
If no buffer object was bound to this target, 0 is returned. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_VERTEX_ARRAY_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the number of coordinates per vertex in the vertex array. The initial
|
||
|
|
value is 4.
|
||
|
|
See <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_VERTEX_ARRAY_STRIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the byte offset between consecutive vertices in the vertex
|
||
|
|
array. The initial value is 0.
|
||
|
|
See <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_VERTEX_ARRAY_TYPE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the data type of each coordinate in the vertex array. The initial value is
|
||
|
|
<constant>GL_FLOAT</constant>.
|
||
|
|
See <citerefentry><refentrytitle>glVertexPointer</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_VERTEX_PROGRAM_POINT_SIZE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether vertex
|
||
|
|
program point size mode is enabled. If enabled, and a vertex shader is active, then the
|
||
|
|
point size is taken from the shader built-in <code>gl_PointSize</code>. If disabled,
|
||
|
|
and a vertex shader is active, then the point size is taken from the point state as specified
|
||
|
|
by <citerefentry><refentrytitle>glPointSize</refentrytitle></citerefentry>.
|
||
|
|
The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_VERTEX_PROGRAM_TWO_SIDE</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns a single boolean value indicating whether vertex
|
||
|
|
program two-sided color mode is enabled. If enabled, and a vertex shader is active, then the
|
||
|
|
GL chooses the back color output for back-facing polygons, and the front color output for
|
||
|
|
non-polygons and front-facing polygons. If disabled, and a vertex shader is active, then the
|
||
|
|
front color output is always selected. The initial value is <constant>GL_FALSE</constant>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_VIEWPORT</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns four values:
|
||
|
|
the
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>
|
||
|
|
window coordinates of the viewport,
|
||
|
|
followed by its width and height.
|
||
|
|
Initially the
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>
|
||
|
|
and
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>
|
||
|
|
window coordinates are both set to 0,
|
||
|
|
and the width and height are set to the width and height of the window into
|
||
|
|
which the GL will do its rendering.
|
||
|
|
See <citerefentry><refentrytitle>glViewport</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_ZOOM_X</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">x</mml:mi></mml:math></inlineequation>
|
||
|
|
pixel zoom factor. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelZoom</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
<varlistentry>
|
||
|
|
<term><constant>GL_ZOOM_Y</constant></term>
|
||
|
|
<listitem>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<parameter>params</parameter> returns one value,
|
||
|
|
the
|
||
|
|
<inlineequation><mml:math><mml:mi mathvariant="italic">y</mml:mi></mml:math></inlineequation>
|
||
|
|
pixel zoom factor. The initial value is 1.
|
||
|
|
See <citerefentry><refentrytitle>glPixelZoom</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</listitem>
|
||
|
|
</varlistentry>
|
||
|
|
</variablelist>
|
||
|
|
<para>
|
||
|
|
Many of the boolean parameters can also be queried more easily using
|
||
|
|
<citerefentry><refentrytitle>glIsEnabled</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="notes"><title>Notes</title>
|
||
|
|
<para>
|
||
|
|
<constant>GL_COLOR_LOGIC_OP</constant>,
|
||
|
|
<constant>GL_COLOR_ARRAY</constant>,
|
||
|
|
<constant>GL_COLOR_ARRAY_SIZE</constant>,
|
||
|
|
<constant>GL_COLOR_ARRAY_STRIDE</constant>,
|
||
|
|
<constant>GL_COLOR_ARRAY_TYPE</constant>,
|
||
|
|
<constant>GL_EDGE_FLAG_ARRAY</constant>,
|
||
|
|
<constant>GL_EDGE_FLAG_ARRAY_STRIDE</constant>,
|
||
|
|
<constant>GL_INDEX_ARRAY</constant>,
|
||
|
|
<constant>GL_INDEX_ARRAY_STRIDE</constant>,
|
||
|
|
<constant>GL_INDEX_ARRAY_TYPE</constant>,
|
||
|
|
<constant>GL_INDEX_LOGIC_OP</constant>,
|
||
|
|
<constant>GL_NORMAL_ARRAY</constant>,
|
||
|
|
<constant>GL_NORMAL_ARRAY_STRIDE</constant>,
|
||
|
|
<constant>GL_NORMAL_ARRAY_TYPE</constant>,
|
||
|
|
<constant>GL_POLYGON_OFFSET_UNITS</constant>,
|
||
|
|
<constant>GL_POLYGON_OFFSET_FACTOR</constant>,
|
||
|
|
<constant>GL_POLYGON_OFFSET_FILL</constant>,
|
||
|
|
<constant>GL_POLYGON_OFFSET_LINE</constant>,
|
||
|
|
<constant>GL_POLYGON_OFFSET_POINT</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY_SIZE</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY_STRIDE</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY_TYPE</constant>,
|
||
|
|
<constant>GL_VERTEX_ARRAY</constant>,
|
||
|
|
<constant>GL_VERTEX_ARRAY_SIZE</constant>,
|
||
|
|
<constant>GL_VERTEX_ARRAY_STRIDE</constant>, and
|
||
|
|
<constant>GL_VERTEX_ARRAY_TYPE</constant>
|
||
|
|
are available only if the GL version is 1.1 or greater.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_ALIASED_POINT_SIZE_RANGE</constant>,
|
||
|
|
<constant>GL_FEEDBACK_BUFFER_SIZE</constant>,
|
||
|
|
<constant>GL_FEEDBACK_BUFFER_TYPE</constant>,
|
||
|
|
<constant>GL_LIGHT_MODEL_AMBIENT</constant>,
|
||
|
|
<constant>GL_LIGHT_MODEL_COLOR_CONTROL</constant>,
|
||
|
|
<constant>GL_MAX_3D_TEXTURE_SIZE</constant>,
|
||
|
|
<constant>GL_MAX_ELEMENTS_INDICES</constant>,
|
||
|
|
<constant>GL_MAX_ELEMENTS_VERTICES</constant>,
|
||
|
|
<constant>GL_PACK_IMAGE_HEIGHT</constant>,
|
||
|
|
<constant>GL_PACK_SKIP_IMAGES</constant>,
|
||
|
|
<constant>GL_RESCALE_NORMAL</constant>,
|
||
|
|
<constant>GL_SELECTION_BUFFER_SIZE</constant>,
|
||
|
|
<constant>GL_SMOOTH_LINE_WIDTH_GRANULARITY</constant>,
|
||
|
|
<constant>GL_SMOOTH_LINE_WIDTH_RANGE</constant>,
|
||
|
|
<constant>GL_SMOOTH_POINT_SIZE_GRANULARITY</constant>,
|
||
|
|
<constant>GL_SMOOTH_POINT_SIZE_RANGE</constant>,
|
||
|
|
<constant>GL_TEXTURE_3D</constant>,
|
||
|
|
<constant>GL_TEXTURE_BINDING_3D</constant>,
|
||
|
|
<constant>GL_UNPACK_IMAGE_HEIGHT</constant>, and
|
||
|
|
<constant>GL_UNPACK_SKIP_IMAGES</constant>
|
||
|
|
are available only if the GL version is 1.2 or greater.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_COMPRESSED_TEXTURE_FORMATS</constant>,
|
||
|
|
<constant>GL_NUM_COMPRESSED_TEXTURE_FORMATS</constant>,
|
||
|
|
<constant>GL_TEXTURE_BINDING_CUBE_MAP</constant>, and
|
||
|
|
<constant>GL_TEXTURE_COMPRESSION_HINT</constant>
|
||
|
|
are available only if the GL version is 1.3 or greater.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_BLEND_DST_ALPHA</constant>,
|
||
|
|
<constant>GL_BLEND_DST_RGB</constant>,
|
||
|
|
<constant>GL_BLEND_SRC_ALPHA</constant>,
|
||
|
|
<constant>GL_BLEND_SRC_RGB</constant>,
|
||
|
|
<constant>GL_CURRENT_FOG_COORD</constant>,
|
||
|
|
<constant>GL_CURRENT_SECONDARY_COLOR</constant>,
|
||
|
|
<constant>GL_FOG_COORD_ARRAY_STRIDE</constant>,
|
||
|
|
<constant>GL_FOG_COORD_ARRAY_TYPE</constant>,
|
||
|
|
<constant>GL_FOG_COORD_SRC</constant>,
|
||
|
|
<constant>GL_MAX_TEXTURE_LOD_BIAS</constant>,
|
||
|
|
<constant>GL_POINT_SIZE_MIN</constant>,
|
||
|
|
<constant>GL_POINT_SIZE_MAX</constant>,
|
||
|
|
<constant>GL_POINT_FADE_THRESHOLD_SIZE</constant>,
|
||
|
|
<constant>GL_POINT_DISTANCE_ATTENUATION</constant>,
|
||
|
|
<constant>GL_SECONDARY_COLOR_ARRAY_SIZE</constant>,
|
||
|
|
<constant>GL_SECONDARY_COLOR_ARRAY_STRIDE</constant>, and
|
||
|
|
<constant>GL_SECONDARY_COLOR_ARRAY_TYPE</constant>
|
||
|
|
are available only if the GL version is 1.4 or greater.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_COLOR_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_EDGE_FLAG_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_ELEMENT_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_FOG_COORD_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_INDEX_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_NORMAL_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</constant>, and
|
||
|
|
<constant>GL_VERTEX_ARRAY_BUFFER_BINDING</constant>
|
||
|
|
are available only if the GL version is 1.5 or greater.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_BLEND_EQUATION_ALPHA</constant>,
|
||
|
|
<constant>GL_BLEND_EQUATION_RGB</constant>,
|
||
|
|
<constant>GL_DRAW_BUFFER</constant><emphasis>i</emphasis>,
|
||
|
|
<constant>GL_FRAGMENT_SHADER_DERIVATIVE_HINT</constant>,
|
||
|
|
<constant>GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS</constant>,
|
||
|
|
<constant>GL_MAX_DRAW_BUFFERS</constant>,
|
||
|
|
<constant>GL_MAX_FRAGMENT_UNIFORM_COMPONENTS</constant>,
|
||
|
|
<constant>GL_MAX_TEXTURE_COORDS</constant>,
|
||
|
|
<constant>GL_MAX_TEXTURE_IMAGE_UNITS</constant>,
|
||
|
|
<constant>GL_MAX_VARYING_FLOATS</constant>,
|
||
|
|
<constant>GL_MAX_VERTEX_ATTRIBS</constant>,
|
||
|
|
<constant>GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS</constant>,
|
||
|
|
<constant>GL_MAX_VERTEX_UNIFORM_COMPONENTS</constant>,
|
||
|
|
<constant>GL_POINT_SPRITE</constant>,
|
||
|
|
<constant>GL_STENCIL_BACK_FAIL</constant>,
|
||
|
|
<constant>GL_STENCIL_BACK_FUNC</constant>,
|
||
|
|
<constant>GL_STENCIL_BACK_PASS_DEPTH_FAIL</constant>,
|
||
|
|
<constant>GL_STENCIL_BACK_PASS_DEPTH_PASS</constant>,
|
||
|
|
<constant>GL_STENCIL_BACK_REF</constant>,
|
||
|
|
<constant>GL_STENCIL_BACK_VALUE_MASK</constant>,
|
||
|
|
<constant>GL_STENCIL_BACK_WRITEMASK</constant>,
|
||
|
|
<constant>GL_VERTEX_PROGRAM_POINT_SIZE</constant>, and
|
||
|
|
<constant>GL_VERTEX_PROGRAM_TWO_SIDE</constant>
|
||
|
|
are available only if the GL version is 2.0 or greater.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_CURRENT_RASTER_SECONDARY_COLOR</constant>,
|
||
|
|
<constant>GL_PIXEL_PACK_BUFFER_BINDING</constant> and
|
||
|
|
<constant>GL_PIXEL_UNPACK_BUFFER_BINDING</constant>
|
||
|
|
are available only if the GL version is 2.1 or greater.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_LINE_WIDTH_GRANULARITY</constant> was deprecated in GL version 1.2. Its
|
||
|
|
functionality was replaced by <constant>GL_SMOOTH_LINE_WIDTH_GRANULARITY</constant>.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_LINE_WIDTH_RANGE</constant> was deprecated in GL version 1.2. Its
|
||
|
|
functionality was replaced by <constant>GL_SMOOTH_LINE_WIDTH_RANGE</constant>.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_POINT_SIZE_GRANULARITY</constant> was deprecated in GL version 1.2. Its
|
||
|
|
functionality was replaced by <constant>GL_SMOOTH_POINT_SIZE_GRANULARITY</constant>.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_POINT_SIZE_RANGE</constant> was deprecated in GL version 1.2. Its
|
||
|
|
functionality was replaced by <constant>GL_SMOOTH_POINT_SIZE_RANGE</constant>.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_BLEND_EQUATION</constant> was deprecated in GL version 2.0. Its
|
||
|
|
functionality was replaced by <constant>GL_BLEND_EQUATION_RGB</constant> and
|
||
|
|
<constant>GL_BLEND_EQUATION_ALPHA</constant>.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_COLOR_MATRIX</constant>,
|
||
|
|
<constant>GL_COLOR_MATRIX_STACK_DEPTH</constant>,
|
||
|
|
<constant>GL_COLOR_TABLE</constant>,
|
||
|
|
<constant>GL_CONVOLUTION_1D</constant>,
|
||
|
|
<constant>GL_CONVOLUTION_2D</constant>,
|
||
|
|
<constant>GL_HISTOGRAM</constant>,
|
||
|
|
<constant>GL_MAX_COLOR_MATRIX_STACK_DEPTH</constant>,
|
||
|
|
<constant>GL_MINMAX</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_COLOR_TABLE</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_RED_BIAS</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_GREEN_BIAS</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_BLUE_BIAS</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_ALPHA_BIAS</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_RED_SCALE</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_GREEN_SCALE</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_BLUE_SCALE</constant>,
|
||
|
|
<constant>GL_POST_COLOR_MATRIX_ALPHA_SCALE</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_COLOR_TABLE</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_RED_BIAS</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_GREEN_BIAS</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_BLUE_BIAS</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_ALPHA_BIAS</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_RED_SCALE</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_GREEN_SCALE</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_BLUE_SCALE</constant>,
|
||
|
|
<constant>GL_POST_CONVOLUTION_ALPHA_SCALE</constant>, and
|
||
|
|
<constant>GL_SEPARABLE_2D</constant>
|
||
|
|
are available only if <code>ARB_imaging</code> is returned from <function>glGet</function>
|
||
|
|
when called with the argument <constant>GL_EXTENSIONS</constant>.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
When the <code>ARB_multitexture</code> extension is supported, or the GL version
|
||
|
|
is 1.3 or greater, the following
|
||
|
|
parameters return the associated value for the active texture unit:
|
||
|
|
<constant>GL_CURRENT_RASTER_TEXTURE_COORDS</constant>,
|
||
|
|
<constant>GL_TEXTURE_1D</constant>, <constant>GL_TEXTURE_BINDING_1D</constant>,
|
||
|
|
<constant>GL_TEXTURE_2D</constant>, <constant>GL_TEXTURE_BINDING_2D</constant>,
|
||
|
|
<constant>GL_TEXTURE_3D</constant>, <constant>GL_TEXTURE_BINDING_3D</constant>,
|
||
|
|
<constant>GL_TEXTURE_GEN_S</constant>,
|
||
|
|
<constant>GL_TEXTURE_GEN_T</constant>,
|
||
|
|
<constant>GL_TEXTURE_GEN_R</constant>,
|
||
|
|
<constant>GL_TEXTURE_GEN_Q</constant>,
|
||
|
|
<constant>GL_TEXTURE_MATRIX</constant>, and
|
||
|
|
<constant>GL_TEXTURE_STACK_DEPTH</constant>.
|
||
|
|
Likewise, the following parameters return the associated value for the
|
||
|
|
active client texture unit:
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY_SIZE</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY_STRIDE</constant>,
|
||
|
|
<constant>GL_TEXTURE_COORD_ARRAY_TYPE</constant>.
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="errors"><title>Errors</title>
|
||
|
|
<para>
|
||
|
|
<constant>GL_INVALID_ENUM</constant> is generated if <parameter>pname</parameter> is not an accepted value.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
<constant>GL_INVALID_OPERATION</constant> is generated if <function>glGet</function>
|
||
|
|
is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry>
|
||
|
|
and the corresponding execution of <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
|
||
|
|
</para>
|
||
|
|
<para>
|
||
|
|
</para>
|
||
|
|
</refsect1>
|
||
|
|
<refsect1 id="seealso"><title>See Also</title>
|
||
|
|
<para>
|
||
|
|
<citerefentry><refentrytitle>glGetActiveAttrib</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetActiveUniform</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetAttachedShaders</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetAttribLocation</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetBufferParameteriv</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetBufferPointerv</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetBufferSubData</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetClipPlane</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetColorTable</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetColorTableParameter</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetCompressedTexImage</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetConvolutionFilter</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetConvolutionParameter</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetError</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetHistogram</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetHistogramParameter</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetLight</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetMap</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetMaterial</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetMinmax</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetMinmaxParameter</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetPixelMap</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetPointerv</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetPolygonStipple</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetProgram</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetProgramInfoLog</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetQueryiv</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetQueryObject</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetSeparableFilter</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetShader</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetShaderInfoLog</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetShaderSource</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetString</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetTexEnv</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetTexGen</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetTexImage</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetTexLevelParameter</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetTexParameter</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetUniform</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetUniformLocation</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetVertexAttrib</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glGetVertexAttribPointerv</refentrytitle></citerefentry>,
|
||
|
|
<citerefentry><refentrytitle>glIsEnabled</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>
|