[clinton/guile-figl.git] / upstream-doc / man3 / xhtml / glBindBuffer.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd">
<!-- saved from url=(0013)about:internet -->
<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>glBindBuffer - OpenGL 3.3 Reference Pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glBindBuffer"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glBindBuffer — bind a named buffer object</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glBindBuffer</b>(</code></td><td>GLenum  </td><td><var class="pdparam">target</var>, </td></tr><tr><td> </td><td>GLuint  </td><td><var class="pdparam">buffer</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>target</code></em></span></dt><dd><p>
                    Specifies the target to which the buffer object is bound.
                    The symbolic constant must be
                    <code class="constant">GL_ARRAY_BUFFER</code>,
                    <code class="constant">GL_COPY_READ_BUFFER</code>,
                    <code class="constant">GL_COPY_WRITE_BUFFER</code>,
                    <code class="constant">GL_ELEMENT_ARRAY_BUFFER</code>,
                    <code class="constant">GL_PIXEL_PACK_BUFFER</code>,
                    <code class="constant">GL_PIXEL_UNPACK_BUFFER</code>,
                    <code class="constant">GL_TEXTURE_BUFFER</code>,
                    <code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code>, or
                    <code class="constant">GL_UNIFORM_BUFFER</code>.
                </p></dd><dt><span class="term"><em class="parameter"><code>buffer</code></em></span></dt><dd><p>
                    Specifies the name of a buffer object.
                </p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
            <code class="function">glBindBuffer</code> binds a buffer object to the specified buffer binding point. Calling <code class="function">glBindBuffer</code> with
            <em class="parameter"><code>target</code></em> set to one of the accepted symbolic constants and <em class="parameter"><code>buffer</code></em> set to the name
            of a buffer object binds that buffer object name to the target. If no buffer object with name <em class="parameter"><code>buffer</code></em>
            exists, one is created with that name. When a buffer object is bound to a target, the previous binding for that
            target is automatically broken.
        </p><p>
            Buffer object names are unsigned integers. The value zero is reserved, but
            there is no default buffer object for each buffer object target. Instead, <em class="parameter"><code>buffer</code></em> set to zero
            effectively unbinds any buffer object previously bound, and restores client memory usage for that buffer object target (if supported for that target).
            Buffer object names and the corresponding buffer object contents are local to
            the shared object space of the current
            GL rendering context;
            two rendering contexts share buffer object names only if they
            explicitly enable sharing between contexts through the appropriate GL windows interfaces functions.
        </p><p>
            <a href="glGenBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glGenBuffers</span></span></a> must be used to generate a set of unused buffer object names.
        </p><p>
            The state of a buffer object immediately after it is first bound is an unmapped zero-sized memory buffer with
            <code class="constant">GL_READ_WRITE</code> access and <code class="constant">GL_STATIC_DRAW</code> usage.
        </p><p>
            While a non-zero buffer object name is bound, GL operations on the target to which it is
            bound affect the bound buffer object, and queries of the target to which it is bound return state 
            from the bound buffer object. While buffer object name zero is bound, as in the initial state,
            attempts to modify or query state on the target to which it is bound generates an 
            <code class="constant">GL_INVALID_OPERATION</code> error.
        </p><p>
            When a non-zero buffer object is bound to the <code class="constant">GL_ARRAY_BUFFER</code> target, 
            the vertex array pointer parameter is interpreted as an offset within the
            buffer object measured in basic machine units.
        </p><p>
            While a non-zero buffer object is bound to the <code class="constant">GL_ELEMENT_ARRAY_BUFFER</code> target, 
            the indices parameter of <a href="glDrawElements.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>, 
            <a href="glDrawElementsInstanced.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsInstanced</span></span></a>,
            <a href="glDrawElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsBaseVertex</span></span></a>, 
            <a href="glDrawRangeElements.xml"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElements</span></span></a>, 
            <a href="glDrawRangeElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElementsBaseVertex</span></span></a>,
            <a href="glMultiDrawElements.xml"><span class="citerefentry"><span class="refentrytitle">glMultiDrawElements</span></span></a>, or 
            <a href="glMultiDrawElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glMultiDrawElementsBaseVertex</span></span></a> is interpreted as an 
            offset within the buffer object measured in basic machine units.
        </p><p>
            While a non-zero buffer object is bound to the <code class="constant">GL_PIXEL_PACK_BUFFER</code> target, 
            the following commands are affected: <a href="glGetCompressedTexImage.xml"><span class="citerefentry"><span class="refentrytitle">glGetCompressedTexImage</span></span></a>, 
            <a href="glGetTexImage.xml"><span class="citerefentry"><span class="refentrytitle">glGetTexImage</span></span></a>, and 
            <a href="glReadPixels.xml"><span class="citerefentry"><span class="refentrytitle">glReadPixels</span></span></a>. The pointer parameter is
            interpreted as an offset within the buffer object measured in basic machine units.
        </p><p>
            While a non-zero buffer object is bound to the <code class="constant">GL_PIXEL_UNPACK_BUFFER</code> target, 
            the following commands are affected: 
            <a href="glCompressedTexImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage1D</span></span></a>,
            <a href="glCompressedTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage2D</span></span></a>,
            <a href="glCompressedTexImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage3D</span></span></a>,
            <a href="glCompressedTexSubImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexSubImage1D</span></span></a>,
            <a href="glCompressedTexSubImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexSubImage2D</span></span></a>,
            <a href="glCompressedTexSubImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexSubImage3D</span></span></a>,
            <a href="glTexImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage1D</span></span></a>,
            <a href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>,
            <a href="glTexImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage3D</span></span></a>,
            <a href="glTexSubImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage1D</span></span></a>,
            <a href="glTexSubImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage2D</span></span></a>, and 
            <a href="glTexSubImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage3D</span></span></a>. The pointer parameter is 
            interpreted as an offset within the buffer object measured in basic machine units.
        </p><p>
            The buffer targets <code class="constant">GL_COPY_READ_BUFFER</code> and <code class="constant">GL_COPY_WRITE_BUFFER</code>
            are provided to allow <a href="glCopyBufferSubData.xml"><span class="citerefentry"><span class="refentrytitle">glCopyBufferSubData</span></span></a>
            to be used without disturbing the state of other bindings. However, <a href="glCopyBufferSubData.xml"><span class="citerefentry"><span class="refentrytitle">glCopyBufferSubData</span></span></a>
            may be used with any pair of buffer binding points.
        </p><p>
            The <code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code> buffer binding point may be passed to <code class="function">glBindBuffer</code>,
            but will not directly affect transform feedback state. Instead, the indexed <code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code>
            bindings must be used through a call to <a href="glBindBufferBase.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferBase</span></span></a>
            or <a href="glBindBufferRange.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferRange</span></span></a>. This will affect the generic
            <code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code> binding.
        </p><p>
            Likewise, the <code class="constant">GL_UNIFORM_BUFFER</code> buffer binding point may be used, but does not directly affect
            uniform buffer state. <a href="glBindBufferBase.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferBase</span></span></a>
            or <a href="glBindBufferRange.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferRange</span></span></a> must be used to bind a buffer to
            an indexed uniform buffer binding point.
        </p><p>
            A buffer object binding created with <code class="function">glBindBuffer</code> remains active until a different
            buffer object name is bound to the same target, or until the bound buffer object is
            deleted with <a href="glDeleteBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteBuffers</span></span></a>.
        </p><p>
            Once created, a named buffer object may be re-bound to any target as often as needed. However,
            the GL implementation may make choices about how to optimize the storage of a buffer object based
            on its initial binding target.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>
            The <code class="constant">GL_COPY_READ_BUFFER</code>, <code class="constant">GL_UNIFORM_BUFFER</code> and
            <code class="constant">GL_TEXTURE_BUFFER</code> targets are available only if the GL version is 3.1 or greater.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p>
            <code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>target</code></em> is not one of the allowable
            values.
        </p><p>
            <code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>buffer</code></em> is not a name previously returned
            from a call to <a href="glGenBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glGenBuffers</span></span></a>.
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p>
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_ARRAY_BUFFER_BINDING</code>
        </p><p>
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_COPY_READ_BUFFER_BINDING</code>
        </p><p>
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_COPY_WRITE_BUFFER_BINDING</code>
        </p><p>
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_ELEMENT_ARRAY_BUFFER_BINDING</code>
        </p><p>
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_PIXEL_PACK_BUFFER_BINDING</code>
        </p><p>
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_PIXEL_UNPACK_BUFFER_BINDING</code>
        </p><p>
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER_BINDING</code>
        </p><p>
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_UNIFORM_BUFFER_BINDING</code>
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
            <a href="glGenBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glGenBuffers</span></span></a>,
            <a href="glBindBufferBase.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferBase</span></span></a>,
            <a href="glBindBufferRange.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferRange</span></span></a>,
            <a href="glMapBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glMapBuffer</span></span></a>,
            <a href="glUnmapBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glUnmapBuffer</span></span></a>,
            <a href="glDeleteBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteBuffers</span></span></a>,
            <a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a>,
            <a href="glIsBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glIsBuffer</span></span></a>
        </p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
            Copyright <span class="trademark"></span>© 2005 Addison-Wesley. 
            This material may be distributed subject to the terms and conditions set forth in 
            the Open Publication License, v 1.0, 8 June 1999.
            <a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
        </p></div></div></body></html>
Commit	Line	Data
7faf1d71 AW	1	<?xml version="1.0" encoding="UTF-8"?>
	2	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "xhtml1-transitional.dtd">
	3	<!-- saved from url=(0013)about:internet -->
c7b31271	4	<?xml-stylesheet type="text/xsl" href="mathml.xsl"?><html xmlns="http://www.w3.org/1999/xhtml" xmlns:pref="http://www.w3.org/2002/Math/preference" pref:renderer="mathplayer-dl"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="stylesheet" type="text/css" href="opengl-man.css" /><title>glBindBuffer - OpenGL 3.3 Reference Pages</title><meta name="generator" content="DocBook XSL Stylesheets V1.69.1" /></head><body><div class="refentry" lang="en" xml:lang="en"><a id="glBindBuffer"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>glBindBuffer — bind a named buffer object</p></div><div class="refsynopsisdiv"><h2>C Specification</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0"><tr><td><code class="funcdef">void <b class="fsfunc">glBindBuffer</b>(</code></td><td>GLenum </td><td><var class="pdparam">target</var>, </td></tr><tr><td> </td><td>GLuint </td><td><var class="pdparam">buffer</var><code>)</code>;</td></tr></table></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="parameters"></a><h2>Parameters</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>target</code></em></span></dt><dd><p>
7faf1d71 AW	5	Specifies the target to which the buffer object is bound.
	6	The symbolic constant must be
	7	<code class="constant">GL_ARRAY_BUFFER</code>,
	8	<code class="constant">GL_COPY_READ_BUFFER</code>,
	9	<code class="constant">GL_COPY_WRITE_BUFFER</code>,
	10	<code class="constant">GL_ELEMENT_ARRAY_BUFFER</code>,
	11	<code class="constant">GL_PIXEL_PACK_BUFFER</code>,
	12	<code class="constant">GL_PIXEL_UNPACK_BUFFER</code>,
	13	<code class="constant">GL_TEXTURE_BUFFER</code>,
	14	<code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code>, or
	15	<code class="constant">GL_UNIFORM_BUFFER</code>.
	16	</p></dd><dt><span class="term"><em class="parameter"><code>buffer</code></em></span></dt><dd><p>
	17	Specifies the name of a buffer object.
c7b31271	18	</p></dd></dl></div></div><div class="refsect1" lang="en" xml:lang="en"><a id="description"></a><h2>Description</h2><p>
7faf1d71 AW	19	<code class="function">glBindBuffer</code> binds a buffer object to the specified buffer binding point. Calling <code class="function">glBindBuffer</code> with
	20	<em class="parameter"><code>target</code></em> set to one of the accepted symbolic constants and <em class="parameter"><code>buffer</code></em> set to the name
	21	of a buffer object binds that buffer object name to the target. If no buffer object with name <em class="parameter"><code>buffer</code></em>
	22	exists, one is created with that name. When a buffer object is bound to a target, the previous binding for that
	23	target is automatically broken.
	24	</p><p>
	25	Buffer object names are unsigned integers. The value zero is reserved, but
	26	there is no default buffer object for each buffer object target. Instead, <em class="parameter"><code>buffer</code></em> set to zero
	27	effectively unbinds any buffer object previously bound, and restores client memory usage for that buffer object target (if supported for that target).
	28	Buffer object names and the corresponding buffer object contents are local to
	29	the shared object space of the current
	30	GL rendering context;
	31	two rendering contexts share buffer object names only if they
	32	explicitly enable sharing between contexts through the appropriate GL windows interfaces functions.
	33	</p><p>
c7b31271	34	<a href="glGenBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glGenBuffers</span></span></a> must be used to generate a set of unused buffer object names.
7faf1d71 AW	35	</p><p>
	36	The state of a buffer object immediately after it is first bound is an unmapped zero-sized memory buffer with
	37	<code class="constant">GL_READ_WRITE</code> access and <code class="constant">GL_STATIC_DRAW</code> usage.
	38	</p><p>
	39	While a non-zero buffer object name is bound, GL operations on the target to which it is
	40	bound affect the bound buffer object, and queries of the target to which it is bound return state
	41	from the bound buffer object. While buffer object name zero is bound, as in the initial state,
	42	attempts to modify or query state on the target to which it is bound generates an
	43	<code class="constant">GL_INVALID_OPERATION</code> error.
	44	</p><p>
	45	When a non-zero buffer object is bound to the <code class="constant">GL_ARRAY_BUFFER</code> target,
	46	the vertex array pointer parameter is interpreted as an offset within the
	47	buffer object measured in basic machine units.
	48	</p><p>
	49	While a non-zero buffer object is bound to the <code class="constant">GL_ELEMENT_ARRAY_BUFFER</code> target,
c7b31271 DH	50	the indices parameter of <a href="glDrawElements.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElements</span></span></a>,
	51	<a href="glDrawElementsInstanced.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsInstanced</span></span></a>,
	52	<a href="glDrawElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawElementsBaseVertex</span></span></a>,
	53	<a href="glDrawRangeElements.xml"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElements</span></span></a>,
	54	<a href="glDrawRangeElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glDrawRangeElementsBaseVertex</span></span></a>,
	55	<a href="glMultiDrawElements.xml"><span class="citerefentry"><span class="refentrytitle">glMultiDrawElements</span></span></a>, or
	56	<a href="glMultiDrawElementsBaseVertex.xml"><span class="citerefentry"><span class="refentrytitle">glMultiDrawElementsBaseVertex</span></span></a> is interpreted as an
7faf1d71 AW	57	offset within the buffer object measured in basic machine units.
	58	</p><p>
	59	While a non-zero buffer object is bound to the <code class="constant">GL_PIXEL_PACK_BUFFER</code> target,
c7b31271 DH	60	the following commands are affected: <a href="glGetCompressedTexImage.xml"><span class="citerefentry"><span class="refentrytitle">glGetCompressedTexImage</span></span></a>,
	61	<a href="glGetTexImage.xml"><span class="citerefentry"><span class="refentrytitle">glGetTexImage</span></span></a>, and
	62	<a href="glReadPixels.xml"><span class="citerefentry"><span class="refentrytitle">glReadPixels</span></span></a>. The pointer parameter is
7faf1d71 AW	63	interpreted as an offset within the buffer object measured in basic machine units.
	64	</p><p>
	65	While a non-zero buffer object is bound to the <code class="constant">GL_PIXEL_UNPACK_BUFFER</code> target,
	66	the following commands are affected:
c7b31271 DH	67	<a href="glCompressedTexImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage1D</span></span></a>,
	68	<a href="glCompressedTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage2D</span></span></a>,
	69	<a href="glCompressedTexImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexImage3D</span></span></a>,
	70	<a href="glCompressedTexSubImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexSubImage1D</span></span></a>,
	71	<a href="glCompressedTexSubImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexSubImage2D</span></span></a>,
	72	<a href="glCompressedTexSubImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glCompressedTexSubImage3D</span></span></a>,
	73	<a href="glTexImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage1D</span></span></a>,
	74	<a href="glTexImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage2D</span></span></a>,
	75	<a href="glTexImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexImage3D</span></span></a>,
	76	<a href="glTexSubImage1D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage1D</span></span></a>,
	77	<a href="glTexSubImage2D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage2D</span></span></a>, and
	78	<a href="glTexSubImage3D.xml"><span class="citerefentry"><span class="refentrytitle">glTexSubImage3D</span></span></a>. The pointer parameter is
7faf1d71 AW	79	interpreted as an offset within the buffer object measured in basic machine units.
	80	</p><p>
	81	The buffer targets <code class="constant">GL_COPY_READ_BUFFER</code> and <code class="constant">GL_COPY_WRITE_BUFFER</code>
c7b31271 DH	82	are provided to allow <a href="glCopyBufferSubData.xml"><span class="citerefentry"><span class="refentrytitle">glCopyBufferSubData</span></span></a>
c7b31271 DH	83	to be used without disturbing the state of other bindings. However, <a href="glCopyBufferSubData.xml"><span class="citerefentry"><span class="refentrytitle">glCopyBufferSubData</span></span></a>
7faf1d71 AW	84	may be used with any pair of buffer binding points.
	85	</p><p>
	86	The <code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code> buffer binding point may be passed to <code class="function">glBindBuffer</code>,
	87	but will not directly affect transform feedback state. Instead, the indexed <code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code>
c7b31271 DH	88	bindings must be used through a call to <a href="glBindBufferBase.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferBase</span></span></a>
	89	or <a href="glBindBufferRange.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferRange</span></span></a>. This will affect the generic
	90	<code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER</code> binding.
7faf1d71 AW	91	</p><p>
7faf1d71 AW	92	Likewise, the <code class="constant">GL_UNIFORM_BUFFER</code> buffer binding point may be used, but does not directly affect
c7b31271 DH	93	uniform buffer state. <a href="glBindBufferBase.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferBase</span></span></a>
c7b31271 DH	94	or <a href="glBindBufferRange.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferRange</span></span></a> must be used to bind a buffer to
7faf1d71 AW	95	an indexed uniform buffer binding point.
	96	</p><p>
	97	A buffer object binding created with <code class="function">glBindBuffer</code> remains active until a different
	98	buffer object name is bound to the same target, or until the bound buffer object is
c7b31271	99	deleted with <a href="glDeleteBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteBuffers</span></span></a>.
7faf1d71 AW	100	</p><p>
	101	Once created, a named buffer object may be re-bound to any target as often as needed. However,
	102	the GL implementation may make choices about how to optimize the storage of a buffer object based
	103	on its initial binding target.
c7b31271	104	</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="notes"></a><h2>Notes</h2><p>
7faf1d71 AW	105	The <code class="constant">GL_COPY_READ_BUFFER</code>, <code class="constant">GL_UNIFORM_BUFFER</code> and
7faf1d71 AW	106	<code class="constant">GL_TEXTURE_BUFFER</code> targets are available only if the GL version is 3.1 or greater.
c7b31271	107	</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="errors"></a><h2>Errors</h2><p>
7faf1d71 AW	108	<code class="constant">GL_INVALID_ENUM</code> is generated if <em class="parameter"><code>target</code></em> is not one of the allowable
	109	values.
	110	</p><p>
	111	<code class="constant">GL_INVALID_VALUE</code> is generated if <em class="parameter"><code>buffer</code></em> is not a name previously returned
c7b31271 DH	112	from a call to <a href="glGenBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glGenBuffers</span></span></a>.
	113	</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="associatedgets"></a><h2>Associated Gets</h2><p>
	114	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_ARRAY_BUFFER_BINDING</code>
7faf1d71	115	</p><p>
c7b31271	116	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_COPY_READ_BUFFER_BINDING</code>
7faf1d71	117	</p><p>
c7b31271	118	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_COPY_WRITE_BUFFER_BINDING</code>
7faf1d71	119	</p><p>
c7b31271	120	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_ELEMENT_ARRAY_BUFFER_BINDING</code>
7faf1d71	121	</p><p>
c7b31271	122	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_PIXEL_PACK_BUFFER_BINDING</code>
7faf1d71	123	</p><p>
c7b31271	124	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_PIXEL_UNPACK_BUFFER_BINDING</code>
7faf1d71	125	</p><p>
c7b31271	126	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_TRANSFORM_FEEDBACK_BUFFER_BINDING</code>
7faf1d71	127	</p><p>
c7b31271 DH	128	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with argument <code class="constant">GL_UNIFORM_BUFFER_BINDING</code>
	129	</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="seealso"></a><h2>See Also</h2><p>
	130	<a href="glGenBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glGenBuffers</span></span></a>,
	131	<a href="glBindBufferBase.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferBase</span></span></a>,
	132	<a href="glBindBufferRange.xml"><span class="citerefentry"><span class="refentrytitle">glBindBufferRange</span></span></a>,
	133	<a href="glMapBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glMapBuffer</span></span></a>,
	134	<a href="glUnmapBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glUnmapBuffer</span></span></a>,
	135	<a href="glDeleteBuffers.xml"><span class="citerefentry"><span class="refentrytitle">glDeleteBuffers</span></span></a>,
	136	<a href="glGet.xml"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a>,
	137	<a href="glIsBuffer.xml"><span class="citerefentry"><span class="refentrytitle">glIsBuffer</span></span></a>
	138	</p></div><div class="refsect1" lang="en" xml:lang="en"><a id="Copyright"></a><h2>Copyright</h2><p>
7faf1d71 AW	139	Copyright <span class="trademark"></span>© 2005 Addison-Wesley.
	140	This material may be distributed subject to the terms and conditions set forth in
	141	the Open Publication License, v 1.0, 8 June 1999.
c7b31271	142	<a href="http://opencontent.org/openpub/" target="_top">http://opencontent.org/openpub/</a>.
7faf1d71	143	</p></div></div></body></html>