/*
THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
COPYRIGHT 1993-1998 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
*/

/*
 *
 * Internal definitions for graphics lib.
 *
 */

#ifdef DXX_BUILD_DESCENT_II
void gr_init_bitmap_alloc( grs_bitmap *bm, int mode, int x, int y, int w, int h, int bytesperline);
void gr_init_sub_bitmap (grs_bitmap *bm, grs_bitmap *bmParent, int x, int y, int w, int h );
void gr_init_bitmap( grs_bitmap *bm, int mode, int x, int y, int w, int h, int bytesperline, unsigned char * data );
#endif

extern void gr_set_buffer(int w, int h, int r, int (*buffer_func)());

extern void gr_pal_setblock( int start, int n, unsigned char * palette );
extern void gr_pal_getblock( int start, int n, unsigned char * palette );
extern void gr_pal_setone( int index, unsigned char red, unsigned char green, unsigned char blue );

void gr_linear_movsb( ubyte * source, ubyte * dest, int nbytes);
void gr_linear_movsw( ubyte * source, ubyte * dest, int nbytes);
void gr_linear_stosd( ubyte * dest, unsigned char color, unsigned int nbytes);

extern unsigned int gr_var_color;
extern unsigned int gr_var_bwidth;
extern unsigned char * gr_var_bitmap;

void gr_linear_movsd( ubyte * source, ubyte * dest, unsigned int nbytes);
void gr_linear_rep_movsd_2x(ubyte *source, ubyte *dest, unsigned int nbytes);

void gr_linear_line( int x0, int y0, int x1, int y1);

extern unsigned int Table8to32[256];

#ifdef __MSDOS__
extern unsigned char * gr_video_memory;
#endif


#define MINX    0
#define MINY    0
#define MAXX    (GWIDTH-1)
#define MAXY    (GHEIGHT-1)
#define TYPE    grd_curcanv->cv_bitmap.bm_type
#define DATA    grd_curcanv->cv_bitmap.bm_data
#define XOFFSET grd_curcanv->cv_bitmap.bm_x
#define YOFFSET grd_curcanv->cv_bitmap.bm_y
#define ROWSIZE grd_curcanv->cv_bitmap.bm_rowsize
#define COLOR   grd_curcanv->cv_color

void order( int *x1, int *x2 );