Index for Section 3G

Alphabetical listing for G

Bottom of page

glVertexPointer(3G)
NAME
  glVertexPointer - define an array of vertex data

SYNOPSIS
  void glVertexPointer(
	  GLint size,
	  GLenum type,
	  GLsizei stride,
	  const GLvoid *pointer );

PARAMETERS
  size
      Specifies the number of coordinates per vertex; must be 2, 3, or 4. The
      initial value is 4.

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

  stride
      Specifies the byte offset between consecutive vertexes. If stride is 0,
      the vertexes 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 vertex in the
      array. The initial value is 0.

DESCRIPTION
  glVertexPointer() specifies the location and data of an array of vertex
  coordinates to use when rendering.  size specifies the number of
  coordinates per vertex and type the data type of the coordinates.  stride
  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
  glInterleavedArrays().) When a vertex array is specified, size, type,
  stride, and pointer are saved as client-side state.

  To enable and disable the vertex array, call glEnableClientState() and
  glDisableClientState() with the argument GL_VERTEX_ARRAY. If enabled, the
  vertex 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
  glVertexPointer() is available only if the GL version is 1.1 or greater.

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

  Execution of glVertexPointer() is not allowed between the execution of
  glBegin() and the corresponding execution of glEnd(), but an error may or
  may not be generated. If no error is generated, the operation is undefined.

  glVertexPointer() is typically implemented on the client side.

  Vertex array parameters are client-side state and are therefore not saved
  or restored by glPushAttrib() and glPopAttrib(). Use glPushClientAttrib()
  and glPopClientAttrib() instead.

ERRORS
  GL_INVALID_VALUE is generated if size is not 2, 3, or 4.

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

  GL_INVALID_VALUE is generated if stride is negative.

ASSOCIATED GETS
       glIsEnabled() with argument GL_VERTEX_ARRAY
       glGet() with argument GL_VERTEX_ARRAY_SIZE
       glGet() with argument GL_VERTEX_ARRAY_TYPE
       glGet() with argument GL_VERTEX_ARRAY_STRIDE
       glGetPointerv() with argument GL_VERTEX_ARRAY_POINTER

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

Index for Section 3G

Alphabetical listing for G

Top of page