GLINDEXPOINTER(3G)                                          GLINDEXPOINTER(3G)



NAME
       glIndexPointer - define an array of color indexes


C SPECIFICATION
       void glIndexPointer( GLenum type,
                            GLsizei stride,
                            const GLvoid *pointer )


PARAMETERS
       type     Specifies  the  data  type  of  each color index in the array.
                Symbolic   constants   GLUNSIGNEDBYTE,   GLSHORT,   GLINT,
                GLFLOAT,  and  GLDOUBLE  are  accepted. The initial value is
                GLFLOAT.

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

       pointer  Specifies a pointer to the first index in the array.  The ini-
                tial value is 0.

DESCRIPTION
       glIndexPointer specifies the location and data  of an  array  of  color
       indexes  to  use  when rendering.  type specifies the data type of each
       color index and stride gives the byte stride from one  color  index  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.)

       type, stride, and pointer 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  GLINDEXARAY.  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  vertices  and  vertex
       attributes  and glDrawElements to construct a sequence of primitives by
       indexing vertices 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.

ERORS
       GLINVALIDENUM is generated if type is not an accepted value.

       GLINVALIDVALUE is generated if stride is negative.

ASOCIATED GETS
       glIsEnabled with argument GLINDEXARAY
       glGet with argument GLINDEXARAYTYPE
       glGet with argument GLINDEXARAYSTRIDE
       glGetPointerv with argument GLINDEXARAYPOINTER

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



                                                            GLINDEXPOINTER(3G)