[clinton/guile-figl.git] / upstream-doc / man2 / glBitmap.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
              "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
<refentry id="glBitmap">
    <refmeta>
        <refmetainfo>
            <copyright>
                <year>1991-2006</year>
                <holder>Silicon Graphics, Inc.</holder>
            </copyright>
        </refmetainfo>
        <refentrytitle>glBitmap</refentrytitle>
        <manvolnum>3G</manvolnum>
    </refmeta>
    <refnamediv>
        <refname>glBitmap</refname>
        <refpurpose>draw a bitmap</refpurpose>
    </refnamediv>
    <refsynopsisdiv><title>C Specification</title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>void <function>glBitmap</function></funcdef>
                <paramdef>GLsizei <parameter>width</parameter></paramdef>
                <paramdef>GLsizei <parameter>height</parameter></paramdef>
                <paramdef>GLfloat <parameter>xorig</parameter></paramdef>
                <paramdef>GLfloat <parameter>yorig</parameter></paramdef>
                <paramdef>GLfloat <parameter>xmove</parameter></paramdef>
                <paramdef>GLfloat <parameter>ymove</parameter></paramdef>
                <paramdef>const GLubyte * <parameter>bitmap</parameter></paramdef>
            </funcprototype>
        </funcsynopsis>
    </refsynopsisdiv>
    <!-- eqn: ignoring delim $$ -->
    <refsect1 id="parameters"><title>Parameters</title>
        <variablelist>
        <varlistentry>
            <term><parameter>width</parameter></term>
            <term><parameter>height</parameter></term>
            <listitem>
                <para>
                    Specify the pixel width and height of the bitmap image.
                </para>
            </listitem>
        </varlistentry>
        <varlistentry>
            <term><parameter>xorig</parameter></term>
            <term><parameter>yorig</parameter></term>
            <listitem>
                <para>
                    Specify the location of the origin in the bitmap image.
                    The origin is measured from the lower left corner of the bitmap,
                    with right and up being the positive axes.
                </para>
            </listitem>
        </varlistentry>
        <varlistentry>
            <term><parameter>xmove</parameter></term>
            <term><parameter>ymove</parameter></term>
            <listitem>
                <para>
                    Specify the <emphasis>x</emphasis> and <emphasis>y</emphasis> offsets to be added to the current raster position
                    after the bitmap is drawn.
                </para>
            </listitem>
        </varlistentry>
        <varlistentry>
            <term><parameter>bitmap</parameter></term>
            <listitem>
                <para>
                    Specifies the address of the bitmap image.
                </para>
            </listitem>
        </varlistentry>
        </variablelist>
    </refsect1>
    <refsect1 id="description"><title>Description</title>
        <para>
            A bitmap is a binary image.
            When drawn,
            the bitmap is positioned relative to the current raster position,
            and frame buffer pixels corresponding to 1's in the bitmap are
            written using the current raster color or index.
            Frame buffer pixels corresponding to 0's in the bitmap are not modified.
        </para>
        <para>
            <function>glBitmap</function> takes seven arguments.
            The first pair specifies the width and height of the bitmap image.
            The second pair specifies the location of the bitmap origin relative
            to the lower left corner of the bitmap image.
            The third pair of arguments specifies <emphasis>x</emphasis> and <emphasis>y</emphasis> offsets to be added
            to the current raster position after the bitmap has been drawn.
            The final argument is a pointer to the bitmap image itself.
        </para>
        <para>
            If a non-zero named buffer object is bound to the <constant>GL_PIXEL_UNPACK_BUFFER</constant> target 
            (see <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>) while a bitmap image is
            specified, <parameter>bitmap</parameter> is treated as a byte offset into the buffer object's data store.
        </para>
        <para>
            The bitmap image is interpreted like image data for the <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>
            command,
            with <parameter>width</parameter> and <parameter>height</parameter> corresponding to the width and height arguments
            of that command,
            and with <emphasis>type</emphasis> set to <constant>GL_BITMAP</constant>
            and <emphasis>format</emphasis> set to <constant>GL_COLOR_INDEX</constant>.
            Modes specified using <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry> affect the
            interpretation of bitmap image data;
            modes specified using <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry> do not.
        </para>
        <para>
            If the current raster position is invalid, <function>glBitmap</function> is ignored.
            Otherwise,
            the lower left corner of the bitmap image is positioned at the window coordinates
        </para>
        <para>
            <inlineequation><mml:math>
                <!-- eqn: x sub w  =  \(lf   x sub r  -  x sub o   \(rf:-->
                <mml:mrow>
                    <mml:msub><mml:mi mathvariant="italic">x</mml:mi>
                    <mml:mi mathvariant="italic">w</mml:mi>
                    </mml:msub>
                    <mml:mo>=</mml:mo>
                    <mml:mfenced open="&LeftFloor;" close="&RightFloor;">
                        <mml:mrow>
                            <mml:msub><mml:mi mathvariant="italic">x</mml:mi>
                            <mml:mi mathvariant="italic">r</mml:mi>
                            </mml:msub>
                            <mml:mo>-</mml:mo>
                            <mml:msub><mml:mi mathvariant="italic">x</mml:mi>
                            <mml:mi mathvariant="italic">o</mml:mi>
                            </mml:msub>
                        </mml:mrow>
                    </mml:mfenced>
                </mml:mrow>
            </mml:math></inlineequation>
        </para>
        <para>
            <inlineequation><mml:math>
                <!-- eqn: y sub w  =  \(lf   y sub r  -  y sub o   \(rf:-->
                <mml:mrow>
                    <mml:msub><mml:mi mathvariant="italic">y</mml:mi>
                    <mml:mi mathvariant="italic">w</mml:mi>
                    </mml:msub>
                    <mml:mo>=</mml:mo>
                    <mml:mfenced open="&LeftFloor;" close="&RightFloor;">
                        <mml:mrow>
                            <mml:msub><mml:mi mathvariant="italic">y</mml:mi>
                            <mml:mi mathvariant="italic">r</mml:mi>
                            </mml:msub>
                            <mml:mo>-</mml:mo>
                            <mml:msub><mml:mi mathvariant="italic">y</mml:mi>
                            <mml:mi mathvariant="italic">o</mml:mi>
                            </mml:msub>
                        </mml:mrow>
                    </mml:mfenced>
                </mml:mrow>
            </mml:math></inlineequation>
        </para>
        <para>
            where 
            <inlineequation><mml:math>
                <!-- eqn: ( x sub r , y sub r ):-->
                <mml:mfenced open="(" close=")">
                    <mml:msub><mml:mi mathvariant="italic">x</mml:mi>
                    <mml:mi mathvariant="italic">r</mml:mi>
                    </mml:msub>
                    <mml:msub><mml:mi mathvariant="italic">y</mml:mi>
                    <mml:mi mathvariant="italic">r</mml:mi>
                    </mml:msub>
                </mml:mfenced>
            </mml:math></inlineequation>
            is the raster position
            and 
            <inlineequation><mml:math>
                <!-- eqn: ( x sub o , y sub o ):-->
                <mml:mfenced open="(" close=")">
                    <mml:msub><mml:mi mathvariant="italic">x</mml:mi>
                    <mml:mi mathvariant="italic">o</mml:mi>
                    </mml:msub>
                    <mml:msub><mml:mi mathvariant="italic">y</mml:mi>
                    <mml:mi mathvariant="italic">o</mml:mi>
                    </mml:msub>
                </mml:mfenced>
            </mml:math></inlineequation>
            is the bitmap origin.
            Fragments are then generated for each pixel corresponding to a 1 (one)
            in the bitmap image.
            These fragments are generated using the current raster <emphasis>z</emphasis> coordinate,
            color or color index, and current raster texture coordinates.
            They are then treated just as if they had been generated
            by a point, line, or polygon,
            including texture mapping,
            fogging,
            and all per-fragment operations such as alpha and depth testing.
        </para>
        <para>
            After the bitmap has been drawn,
            the <emphasis>x</emphasis> and <emphasis>y</emphasis> coordinates of the current raster position are offset by
            <parameter>xmove</parameter> and <parameter>ymove</parameter>.
            No change is made to the <emphasis>z</emphasis> coordinate of the current raster position,
            or to the current raster color, texture coordinates, or index.
        </para>
    </refsect1>
    <refsect1 id="notes"><title>Notes</title>
        <para>
            To set a valid raster position outside the viewport, first set a valid
            raster position inside the viewport, then call <function>glBitmap</function> with NULL
            as the <parameter>bitmap</parameter> parameter and with <parameter>xmove</parameter> and <parameter>ymove</parameter> set to
            the offsets of the new raster position. This technique is useful when
            panning an image around the viewport.
        </para>
    </refsect1>
    <refsect1 id="errors"><title>Errors</title>
        <para>
            <constant>GL_INVALID_VALUE</constant> is generated if <parameter>width</parameter> or <parameter>height</parameter> is negative.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
            <constant>GL_PIXEL_UNPACK_BUFFER</constant> target and the buffer object's data store is currently mapped.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
            <constant>GL_PIXEL_UNPACK_BUFFER</constant> target and the data would be unpacked from the buffer 
            object such that the memory reads required would exceed the data store size.
        </para>
        <para>
            <constant>GL_INVALID_OPERATION</constant> is generated if <function>glBitmap</function>
            is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry> and the corresponding execution of
            <citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
        </para>
    </refsect1>
    <refsect1 id="associatedgets"><title>Associated Gets</title>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_POSITION</constant>
        </para>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_COLOR</constant>
        </para>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_SECONDARY_COLOR</constant>
        </para>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_DISTANCE</constant>
        </para>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_INDEX</constant>
        </para>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_TEXTURE_COORDS</constant>
        </para>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_POSITION_VALID</constant>
        </para>
        <para>
            <citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_PIXEL_UNPACK_BUFFER_BINDING</constant>
        </para>
    </refsect1>
    <refsect1 id="seealso"><title>See Also</title>
        <para>
            <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>,
            <citerefentry><refentrytitle>glWindowPos</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>
Commit	Line	Data
7faf1d71 AW	1	<?xml version="1.0" encoding="UTF-8"?>
	2	<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN"
	3	"http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd">
	4	<refentry id="glBitmap">
	5	<refmeta>
	6	<refmetainfo>
	7	<copyright>
	8	<year>1991-2006</year>
	9	<holder>Silicon Graphics, Inc.</holder>
	10	</copyright>
	11	</refmetainfo>
	12	<refentrytitle>glBitmap</refentrytitle>
	13	<manvolnum>3G</manvolnum>
	14	</refmeta>
	15	<refnamediv>
	16	<refname>glBitmap</refname>
	17	<refpurpose>draw a bitmap</refpurpose>
	18	</refnamediv>
	19	<refsynopsisdiv><title>C Specification</title>
	20	<funcsynopsis>
	21	<funcprototype>
	22	<funcdef>void <function>glBitmap</function></funcdef>
	23	<paramdef>GLsizei <parameter>width</parameter></paramdef>
	24	<paramdef>GLsizei <parameter>height</parameter></paramdef>
	25	<paramdef>GLfloat <parameter>xorig</parameter></paramdef>
	26	<paramdef>GLfloat <parameter>yorig</parameter></paramdef>
	27	<paramdef>GLfloat <parameter>xmove</parameter></paramdef>
	28	<paramdef>GLfloat <parameter>ymove</parameter></paramdef>
	29	<paramdef>const GLubyte * <parameter>bitmap</parameter></paramdef>
	30	</funcprototype>
	31	</funcsynopsis>
	32	</refsynopsisdiv>
	33	<!-- eqn: ignoring delim $$ -->
	34	<refsect1 id="parameters"><title>Parameters</title>
	35	<variablelist>
	36	<varlistentry>
	37	<term><parameter>width</parameter></term>
	38	<term><parameter>height</parameter></term>
	39	<listitem>
	40	<para>
	41	Specify the pixel width and height of the bitmap image.
	42	</para>
	43	</listitem>
	44	</varlistentry>
	45	<varlistentry>
	46	<term><parameter>xorig</parameter></term>
	47	<term><parameter>yorig</parameter></term>
	48	<listitem>
	49	<para>
	50	Specify the location of the origin in the bitmap image.
	51	The origin is measured from the lower left corner of the bitmap,
	52	with right and up being the positive axes.
	53	</para>
	54	</listitem>
	55	</varlistentry>
	56	<varlistentry>
	57	<term><parameter>xmove</parameter></term>
	58	<term><parameter>ymove</parameter></term>
	59	<listitem>
	60	<para>
	61	Specify the <emphasis>x</emphasis> and <emphasis>y</emphasis> offsets to be added to the current raster position
	62	after the bitmap is drawn.
	63	</para>
	64	</listitem>
65	</varlistentry>
66	<varlistentry>
67	<term><parameter>bitmap</parameter></term>
68	<listitem>
69	<para>
70	Specifies the address of the bitmap image.
71	</para>
72	</listitem>
73	</varlistentry>
74	</variablelist>
75	</refsect1>
76	<refsect1 id="description"><title>Description</title>
77	<para>
78	A bitmap is a binary image.
79	When drawn,
80	the bitmap is positioned relative to the current raster position,
81	and frame buffer pixels corresponding to 1's in the bitmap are
82	written using the current raster color or index.
83	Frame buffer pixels corresponding to 0's in the bitmap are not modified.
84	</para>
85	<para>
86	<function>glBitmap</function> takes seven arguments.
87	The first pair specifies the width and height of the bitmap image.
88	The second pair specifies the location of the bitmap origin relative
89	to the lower left corner of the bitmap image.
90	The third pair of arguments specifies <emphasis>x</emphasis> and <emphasis>y</emphasis> offsets to be added
91	to the current raster position after the bitmap has been drawn.
92	The final argument is a pointer to the bitmap image itself.
93	</para>
94	<para>
95	If a non-zero named buffer object is bound to the <constant>GL_PIXEL_UNPACK_BUFFER</constant> target
96	(see <citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>) while a bitmap image is
97	specified, <parameter>bitmap</parameter> is treated as a byte offset into the buffer object's data store.
98	</para>
99	<para>
100	The bitmap image is interpreted like image data for the <citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>
101	command,
102	with <parameter>width</parameter> and <parameter>height</parameter> corresponding to the width and height arguments
103	of that command,
104	and with <emphasis>type</emphasis> set to <constant>GL_BITMAP</constant>
105	and <emphasis>format</emphasis> set to <constant>GL_COLOR_INDEX</constant>.
106	Modes specified using <citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry> affect the
107	interpretation of bitmap image data;
108	modes specified using <citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry> do not.
109	</para>
110	<para>
111	If the current raster position is invalid, <function>glBitmap</function> is ignored.
112	Otherwise,
113	the lower left corner of the bitmap image is positioned at the window coordinates
114	</para>
115	<para>
116	<inlineequation><mml:math>
117	<!-- eqn: x sub w = \(lf x sub r - x sub o \(rf:-->
118	<mml:mrow>
119	<mml:msub><mml:mi mathvariant="italic">x</mml:mi>
120	<mml:mi mathvariant="italic">w</mml:mi>
121	</mml:msub>
122	<mml:mo>=</mml:mo>
123	<mml:mfenced open="&LeftFloor;" close="&RightFloor;">
124	<mml:mrow>
125	<mml:msub><mml:mi mathvariant="italic">x</mml:mi>
126	<mml:mi mathvariant="italic">r</mml:mi>
127	</mml:msub>
128	<mml:mo>-</mml:mo>
129	<mml:msub><mml:mi mathvariant="italic">x</mml:mi>
130	<mml:mi mathvariant="italic">o</mml:mi>
131	</mml:msub>
132	</mml:mrow>
133	</mml:mfenced>
134	</mml:mrow>
135	</mml:math></inlineequation>
136	</para>
137	<para>
138	<inlineequation><mml:math>
139	<!-- eqn: y sub w = \(lf y sub r - y sub o \(rf:-->
140	<mml:mrow>
141	<mml:msub><mml:mi mathvariant="italic">y</mml:mi>
142	<mml:mi mathvariant="italic">w</mml:mi>
143	</mml:msub>
144	<mml:mo>=</mml:mo>
145	<mml:mfenced open="&LeftFloor;" close="&RightFloor;">
146	<mml:mrow>
147	<mml:msub><mml:mi mathvariant="italic">y</mml:mi>
148	<mml:mi mathvariant="italic">r</mml:mi>
149	</mml:msub>
150	<mml:mo>-</mml:mo>
151	<mml:msub><mml:mi mathvariant="italic">y</mml:mi>
152	<mml:mi mathvariant="italic">o</mml:mi>
153	</mml:msub>
154	</mml:mrow>
155	</mml:mfenced>
156	</mml:mrow>
157	</mml:math></inlineequation>
158	</para>
159	<para>
160	where
161	<inlineequation><mml:math>
162	<!-- eqn: ( x sub r , y sub r ):-->
163	<mml:mfenced open="(" close=")">
164	<mml:msub><mml:mi mathvariant="italic">x</mml:mi>
165	<mml:mi mathvariant="italic">r</mml:mi>
166	</mml:msub>
167	<mml:msub><mml:mi mathvariant="italic">y</mml:mi>
168	<mml:mi mathvariant="italic">r</mml:mi>
169	</mml:msub>
170	</mml:mfenced>
171	</mml:math></inlineequation>
172	is the raster position
173	and
174	<inlineequation><mml:math>
175	<!-- eqn: ( x sub o , y sub o ):-->
176	<mml:mfenced open="(" close=")">
177	<mml:msub><mml:mi mathvariant="italic">x</mml:mi>
178	<mml:mi mathvariant="italic">o</mml:mi>
179	</mml:msub>
180	<mml:msub><mml:mi mathvariant="italic">y</mml:mi>
181	<mml:mi mathvariant="italic">o</mml:mi>
182	</mml:msub>
183	</mml:mfenced>
184	</mml:math></inlineequation>
185	is the bitmap origin.
186	Fragments are then generated for each pixel corresponding to a 1 (one)
187	in the bitmap image.
188	These fragments are generated using the current raster <emphasis>z</emphasis> coordinate,
189	color or color index, and current raster texture coordinates.
190	They are then treated just as if they had been generated
191	by a point, line, or polygon,
192	including texture mapping,
193	fogging,
194	and all per-fragment operations such as alpha and depth testing.
195	</para>
196	<para>
197	After the bitmap has been drawn,
198	the <emphasis>x</emphasis> and <emphasis>y</emphasis> coordinates of the current raster position are offset by
199	<parameter>xmove</parameter> and <parameter>ymove</parameter>.
200	No change is made to the <emphasis>z</emphasis> coordinate of the current raster position,
201	or to the current raster color, texture coordinates, or index.
202	</para>
203	</refsect1>
204	<refsect1 id="notes"><title>Notes</title>
205	<para>
206	To set a valid raster position outside the viewport, first set a valid
207	raster position inside the viewport, then call <function>glBitmap</function> with NULL
208	as the <parameter>bitmap</parameter> parameter and with <parameter>xmove</parameter> and <parameter>ymove</parameter> set to
209	the offsets of the new raster position. This technique is useful when
210	panning an image around the viewport.
211	</para>
212	</refsect1>
213	<refsect1 id="errors"><title>Errors</title>
214	<para>
215	<constant>GL_INVALID_VALUE</constant> is generated if <parameter>width</parameter> or <parameter>height</parameter> is negative.
216	</para>
217	<para>
218	<constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
219	<constant>GL_PIXEL_UNPACK_BUFFER</constant> target and the buffer object's data store is currently mapped.
220	</para>
221	<para>
222	<constant>GL_INVALID_OPERATION</constant> is generated if a non-zero buffer object name is bound to the
223	<constant>GL_PIXEL_UNPACK_BUFFER</constant> target and the data would be unpacked from the buffer
224	object such that the memory reads required would exceed the data store size.
225	</para>
226	<para>
227	<constant>GL_INVALID_OPERATION</constant> is generated if <function>glBitmap</function>
228	is executed between the execution of <citerefentry><refentrytitle>glBegin</refentrytitle></citerefentry> and the corresponding execution of
229	<citerefentry><refentrytitle>glEnd</refentrytitle></citerefentry>.
230	</para>
231	</refsect1>
232	<refsect1 id="associatedgets"><title>Associated Gets</title>
233	<para>
234	<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_POSITION</constant>
235	</para>
236	<para>
237	<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_COLOR</constant>
238	</para>
239	<para>
240	<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_SECONDARY_COLOR</constant>
241	</para>
242	<para>
243	<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_DISTANCE</constant>
244	</para>
245	<para>
246	<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_INDEX</constant>
247	</para>
248	<para>
249	<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_TEXTURE_COORDS</constant>
250	</para>
251	<para>
252	<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_CURRENT_RASTER_POSITION_VALID</constant>
253	</para>
254	<para>
255	<citerefentry><refentrytitle>glGet</refentrytitle></citerefentry> with argument <constant>GL_PIXEL_UNPACK_BUFFER_BINDING</constant>
256	</para>
257	</refsect1>
258	<refsect1 id="seealso"><title>See Also</title>
259	<para>
260	<citerefentry><refentrytitle>glBindBuffer</refentrytitle></citerefentry>,
261	<citerefentry><refentrytitle>glDrawPixels</refentrytitle></citerefentry>,
262	<citerefentry><refentrytitle>glPixelStore</refentrytitle></citerefentry>,
263	<citerefentry><refentrytitle>glPixelTransfer</refentrytitle></citerefentry>,
264	<citerefentry><refentrytitle>glRasterPos</refentrytitle></citerefentry>,
265	<citerefentry><refentrytitle>glWindowPos</refentrytitle></citerefentry>
266	</para>
267	</refsect1>
268	<refsect1 id="Copyright"><title>Copyright</title>
269	<para>
270	Copyright <trademark class="copyright"></trademark> 1991-2006
271	Silicon Graphics, Inc. This document is licensed under the SGI
272	Free Software B License. For details, see
273	<ulink url="http://oss.sgi.com/projects/FreeB/">http://oss.sgi.com/projects/FreeB/</ulink>.
274	</para>
275	</refsect1>
276	</refentry>