C SPECIFICATION

       void GLAPIENTRY glIndexPointer( GLenum type,
                                       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 ini-
              tial 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
       array or stored in separate arrays.  (Single-array storage may be  more
       efficient 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
       attributes  and glDrawElements to construct a sequence of primitives by
       indexing 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.

SEE ALSO

       glArrayElement,     glColorPointer,    glDrawArrays,    glDrawElements,
       glEdgeFlagPointer,   glEnable,   glGetPointerv,    glInterleavedArrays,
       glNormalPointer,         glPopClientAttrib,         glPushClientAttrib,
       glTexCoordPointer, glVertexPointer



                                                            GLINDEXPOINTER(3G)