PK_render_viewport_t    


typedef int PK_render_viewport_t;


This field can take any one of the following values.
    PK_render_viewport_no_c     : no viewports are supplied (default)
    PK_render_viewport_yes_c    : entities outside the single supplied
                                    viewport may be omitted
    PK_render_viewport_array_c  : entities outside all the supplied
                                    viewports may be omitted