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SuSE 11.3 - man page for glnormalpointer (suse section 3G)

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GLNORMALPOINTER(3G)							      GLNORMALPOINTER(3G)

NAME
       glNormalPointer - define an array of normals

C SPECIFICATION
       void glNormalPointer( GLenum type,
			     GLsizei stride,
			     const GLvoid *ptr )

PARAMETERS
       type    Specifies  the  data  type  of  each  coordinate in the array.  Symbolic constants
	       GL_BYTE, GL_SHORT, GL_INT, GL_FLOAT, and GL_DOUBLE are accepted. The initial value
	       is GL_FLOAT.

       stride  Specifies the byte offset between consecutive normals. If stride is 0- the initial
	       value-the normals are understood to be tightly packed in the array.   The  initial
	       value is 0.

       ptr     Specifies a pointer to the first coordinate of the first normal in the array.  The
	       initial value is 0.

DESCRIPTION
       glNormalPointer specifies the location and data	of an array of normals to use  when  ren-
       dering.	 type specifies the data type of the normal coordinates and stride gives the byte
       stride from one normal to the next, allowing vertices 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 glInterleavedArrays.)	When a normal array is	specified,  type,
       stride, and ptr are saved as client-side state.

       To  enable and disable the normal array, call glEnableClientState and glDisableClientState
       with the argument GL_NORMAL_ARRAY. If enabled, the normal array is used when glDrawArrays,
       glDrawElements, or glArrayElement is called.

       Use  glDrawArrays  to  construct a sequence of primitives (all of the same type) from pre-
       specified vertex and vertex attribute arrays.  Use glArrayElement to specify primitives by
       indexing  vertices  and	vertex	attributes  and glDrawElements to construct a sequence of
       primitives by indexing vertices and vertex attributes.

NOTES
       glNormalPointer is available only if the GL version is 1.1 or greater.

       The  normal  array  is  initially  disabled  and  isn't	accessed   when   glArrayElement,
       glDrawElements, or glDrawArrays is called.

       Execution  of  glNormalPointer is not allowed between glBegin and the corresponding glEnd,
       but an error may or may not be generated. If an error is not generated, the  operation  is
       undefined.

       glNormalPointer is typically implemented on the client side.

       Since the normal array parameters are client-side state, they are not saved or restored by
       glPushAttrib and glPopAttrib.  Use glPushClientAttrib and glPopClientAttrib instead.

ERRORS
       GL_INVALID_ENUM is generated if type is not an accepted value.

       GL_INVALID_VALUE is generated if stride is negative.

ASSOCIATED GETS
       glIsEnabled with argument GL_NORMAL_ARRAY
       glGet with argument GL_NORMAL_ARRAY_TYPE
       glGet with argument GL_NORMAL_ARRAY_STRIDE
       glGetPointerv with argument GL_NORMAL_ARRAY_POINTER

SEE ALSO
       glArrayElement(3G),     glColorPointer(3G),     glDrawArrays(3G),      glDrawElements(3G),
       glEdgeFlagPointer(3G),	   glEnable(3G),      glGetPointerv(3G),      glIndexPointer(3G),
       glInterleavedArrays(3G), 	 glPopClientAttrib(3G), 	  glPushClientAttrib(3G),
       glTexCoordPointer(3G), glVertexPointer(3G)

									      GLNORMALPOINTER(3G)
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