glIndexPointerf( pointer )
glIndexPointeri( pointer )
glIndexPointers( pointer )
Specifies the data type of each color index in the array. Symbolic constants GL_UNSIGNED_BYTE , GL_SHORT , GL_INT , GL_FLOAT , and GL_DOUBLE are accepted. The initial value is GL_FLOAT .
Specifies the byte offset between consecutive color indexes. If stride is 0, the color indexes are understood to be tightly packed in the array. The initial value is 0.
Specifies a pointer to the first index in the array. The initial value is 0.