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<HTML><BODY><PRE>     <STRONG>NAME</STRONG>	  <STRONG>glVertexPointer</STRONG> - define an array of vertex data     <STRONG>C</STRONG> <STRONG>SPECIFICATION</STRONG>	  void <STRONG>glVertexPointer</STRONG>(	GLint <EM>size</EM>,				GLenum <EM>type</EM>,				GLsizei	<EM>stride</EM>,				const GLvoid *<EM>pointer</EM> )     <STRONG>PARAMETERS</STRONG>	  <EM>size</EM>	   Specifies the number	of coordinates per vertex;		   must	be 2, 3, or 4. The initial value is 4.	  <EM>type</EM>	   Specifies the data type of each coordinate in the		   array.  Symbolic constants <STRONG>GL_SHORT</STRONG>,	<STRONG>GL_INT</STRONG>,		   <STRONG>GL_FLOAT</STRONG>, and <STRONG>GL_DOUBLE</STRONG> are accepted. The initial		   value is <STRONG>GL_FLOAT</STRONG>.	  <EM>stride</EM>   Specifies the byte offset between consecutive		   vertexes. If	<EM>stride</EM> is 0, the vertexes are		   understood to be tightly packed in the array. The		   initial value		   is 0.	  <EM>pointer</EM>  Specifies a pointer to the first coordinate of the		   first vertex	in the array.     <STRONG>DESCRIPTION</STRONG>	  <STRONG>glVertexPointer</STRONG> specifies the	location and data format of an	  array	of vertex coordinates to use when rendering.  <EM>size</EM>	  specifies the	number of coordinates per vertex and <EM>type</EM> the	  data type of the coordinates.	<EM>stride</EM> specifies the byte	  stride from one vertex to the	next allowing vertexes and	  attributes to	be packed into a single	array or stored	in	  separate arrays.  (Single-array storage may be more	  efficient on some implementations; see <STRONG>glInterleavedArrays</STRONG>.)	  When a vertex	array is specified, <EM>size</EM>, <EM>type</EM>,	<EM>stride</EM>,	and	  <EM>pointer</EM> are saved as client-side state.	  To enable and	disable	the vertex array, call	  <STRONG>glEnableClientState</STRONG> and	  <STRONG>glDisableClientState</STRONG> with the	argument <STRONG>GL_VERTEX_ARRAY</STRONG>. If	  enabled, the vertex array is used when <STRONG>glDrawArrays</STRONG>,	  <STRONG>glDrawElements</STRONG>, or <STRONG>glArrayElement</STRONG> is called.	  Use <STRONG>glDrawArrays</STRONG> to construct	a sequence of primitives (all	  of the same type) from prespecified vertex and vertex	  attribute arrays.  Use <STRONG>glArrayElement</STRONG>	to specify primitives	  by indexing vertexes and vertex attributes  and	  <STRONG>glDrawElements</STRONG> to construct a	sequence of primitives by	  indexing vertexes and	vertex attributes.     <STRONG>NOTES</STRONG>	  <STRONG>glVertexPointer</STRONG> is available only if the GL version is 1.1	  or greater.	  The vertex array is initially	disabled and isn't accessed	  when <STRONG>glArrayElement</STRONG>, <STRONG>glDrawElements</STRONG> or <STRONG>glDrawArrays</STRONG> is	  called.	  Execution of <STRONG>glVertexPointer</STRONG> is not allowed between the	  execution of <STRONG>glBegin</STRONG> and the corresponding execution of	  <STRONG>glEnd</STRONG>, but an	error may or may not be	generated. If no error	  is generated,	the operation is undefined.	  <STRONG>glVertexPointer</STRONG> is typically implemented on the client side.	  Vertex array parameters are client-side state	and are	  therefore not	saved or restored by <STRONG>glPushAttrib</STRONG> and	  <STRONG>glPopAttrib</STRONG>.	Use <STRONG>glPushClientAttrib</STRONG> and <STRONG>glPopClientAttrib</STRONG>	  instead.     <STRONG>ERRORS</STRONG>	  <STRONG>GL_INVALID_VALUE</STRONG> is generated	if <EM>size</EM>	is not 2, 3, or	4.	  <STRONG>GL_INVALID_ENUM</STRONG> is generated if <EM>type</EM> is is not an accepted	  value.	  <STRONG>GL_INVALID_VALUE</STRONG> is generated	if <EM>stride</EM> is negative.     <STRONG>ASSOCIATED</STRONG>	<STRONG>GETS</STRONG>	  <STRONG>glIsEnabled</STRONG> with argument <STRONG>GL_VERTEX_ARRAY</STRONG>	  <STRONG>glGet</STRONG>	with argument <STRONG>GL_VERTEX_ARRAY_SIZE</STRONG>	  <STRONG>glGet</STRONG>	with argument <STRONG>GL_VERTEX_ARRAY_TYPE</STRONG>	  <STRONG>glGet</STRONG>	with argument <STRONG>GL_VERTEX_ARRAY_STRIDE</STRONG>	  <STRONG>glGetPointerv</STRONG>	with argument <STRONG>GL_VERTEX_ARRAY_POINTER</STRONG>     <STRONG>SEE</STRONG> <STRONG>ALSO</STRONG>	  <STRONG>glArrayElement</STRONG>, <STRONG>glColorPointer</STRONG>, <STRONG>glDrawArrays</STRONG>,	  <STRONG>glDrawElements</STRONG>,	  <STRONG>glEdgeFlagPointer</STRONG>, <STRONG>glEnable</STRONG>, <STRONG>glGetPointerv</STRONG>, <STRONG>glIndexPointer</STRONG>,	  <STRONG>glInterleavedArrays</STRONG>, <STRONG>glNormalPointer</STRONG>,	<STRONG>glPopClientAttrib</STRONG>,	  <STRONG>glPushClientAttrib</STRONG>, <STRONG>glTexCoordPointer</STRONG></PRE></BODY></HTML>
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