GLsizei strid )

PARAMETERS
       type   Specifies  the  data type of each color index in the array.  Sym‐
              bolic constants GL_UNSIGNED_BYTE, GL_SHORT, GL_INT, GL_FLOAT, and
              GL_DOUBLE are accepted. The initial value is GL_FLOAT.

       strid  Specifies  the byte offset between consecutive color indexes.  If
              strid is 0 (the initial value), the color indexes are  understood
              to be tightly packed in the array.  The initial value is 0.

       _param3
              Specifies a pointer to the first index in the array.  The initial
              value is 0.

DESCRIPTION
       glIndexPointer specifies the location and data format  of  an  array  of
       color  indexes  to  use when rendering.  type specifies the data type of
       each color index and strid gives the byte stride from one color index to
       the next allowing vertexes and attributes to be packed into a single ar‐
       ray or stored in separate arrays.  (Single-array storage may be more ef‐
       ficient on some implementations; see glInterleavedArrays.)

       type, strid, and _param3 are saved as client-side state.

       The  color  index array is initially disabled. To enable and disable the
       array, call glEnableClientState and glDisableClientState with the  argu‐
       ment  GL_INDEX_ARRAY.  If  enabled,  the  color index 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 at‐
       tributes and glDrawElements to construct a sequence of primitives by in‐
       dexing vertexes and vertex attributes.

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

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

       Execution  of glIndexPointer is not allowed between glBegin and the cor‐
       responding glEnd, but an error may or may not be generated. If an  error
       is not generated, the operation is undefined.

       glIndexPointer is typically implemented on the client side.

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

       glNormalPointer,          glPopClientAttrib,         glPushClientAttrib,
       glTexCoordPointer, glVertexPointer

                                                             GLINDEXPOINTER(3G)