Index for Section 3G

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glNormalPointer(3G)
NAME
  glNormalPointer - define an array of normals

SYNOPSIS
  void glNormalPointer(
	  GLenum type,
	  GLsizei stride,
	  const GLvoid *pointer );

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.

  pointer
      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 rendering.  type specifies the data type of the normal coordinates
  and stride gives the byte stride from one normal 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 glInterleavedArrays().) When a normal array is
  specified, type, stride, and pointer 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 prespecified vertex and vertex attribute arrays.  Use
  glArrayElement() to specify primitives by indexing vertexes and vertex
  attributes and glDrawElements() to construct a sequence of primitives by
  indexing vertexes 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(3), glColorPointer(3), glDrawArrays(3), glDrawElements(3),
  glEdgeFlagPointer(3), glEnable(3), glGetPointerv(3), glIndexPointer(3),
  glInterleavedArrays(3), glPopClientAttrib(3), glPushClientAttrib(3),
  glTexCoordPointer(3), glVertexPointer(3)

Index for Section 3G

Alphabetical listing for G

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