struct rasops_info { 
 
	/* 
	 * These must be filled in by the caller 
	 */ 
	int	ri_depth;	/* depth in bits */ 
	u_char	*ri_bits;	/* ptr to bits */ 
	int	ri_width;	/* width (pels) */ 
	int	ri_height;	/* height (pels) */ 
	int	ri_stride;	/* stride in bytes */ 
 
	/* 
	 * These can optionally be left zeroed out. If you fill ri_font, 
	 * but aren't using wsfont, set ri_wsfcookie to -1. 
	 */ 
	struct	wsdisplay_font *ri_font; 
	int	ri_wsfcookie;	/* wsfont cookie */ 
	void	*ri_hw;		/* driver private data */ 
	struct wsdisplay_charcell *ri_bs; /* character backing store */ 
	int	ri_crow;	/* cursor row */ 
	int	ri_ccol;	/* cursor column */ 
	int	ri_flg;		/* various operational flags */ 
 
	/* 
	 * These are optional and will default if zero. Meaningless 
	 * on depths other than 15, 16, 24 and 32 bits per pel. On 
	 * 24 bit displays, ri_{r,g,b}num must be 8. 
	 */ 
	u_char	ri_rnum;	/* number of bits for red */ 
	u_char	ri_gnum;	/* number of bits for green */ 
	u_char	ri_bnum;	/* number of bits for blue */ 
	u_char	ri_rpos;	/* which bit red starts at */ 
	u_char	ri_gpos;	/* which bit green starts at */ 
	u_char	ri_bpos;	/* which bit blue starts at */ 
 
	/* 
	 * These are filled in by rasops_init() 
	 */ 
	int	ri_emuwidth;	/* width we actually care about */ 
	int	ri_emuheight;	/* height we actually care about */ 
	int	ri_emustride;	/* bytes per row we actually care about */ 
	int	ri_rows;	/* number of rows (characters) */ 
	int	ri_cols;	/* number of columns (characters) */ 
	int	ri_delta;	/* row delta in bytes */ 
	int	ri_pelbytes;	/* bytes per pel (may be zero) */ 
	int	ri_fontscale;	/* fontheight * fontstride */ 
	int	ri_xscale;	/* fontwidth * pelbytes */ 
	int	ri_yscale;	/* fontheight * stride */ 
	u_char  *ri_origbits;	/* where screen bits actually start */ 
	int	ri_xorigin;	/* where ri_bits begins (x) */ 
	int	ri_yorigin;	/* where ri_bits begins (y) */ 
	int32_t	ri_devcmap[16]; /* color -> framebuffer data */ 
 
	/* 
	 * The emulops you need to use, and the screen caps for wscons 
	 */ 
	struct	wsdisplay_emulops ri_ops; 
	int	ri_caps; 
 
	/* 
	 * Callbacks so we can share some code 
	 */ 
	void	(*ri_do_cursor)(struct rasops_info *); 
	void	(*ri_updatecursor)(struct rasops_info *); 
 
#if NRASOPS_ROTATION > 0 
	/* Used to intercept putchar to permit display rotation */ 
	struct	wsdisplay_emulops ri_real_ops; 
#endif 
};