1/*
2Copyright (C) 1996-1997 Id Software, Inc.
3
4This program is free software; you can redistribute it and/or
5modify it under the terms of the GNU General Public License
6as published by the Free Software Foundation; either version 2
7of the License, or (at your option) any later version.
8
9This program is distributed in the hope that it will be useful,
10but WITHOUT ANY WARRANTY; without even the implied warranty of
11MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
12
13See the GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with this program; if not, write to the Free Software
17Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18
19*/
20// vid.h -- video driver defs
21
22#define VID_CBITS	6
23#define VID_GRADES	(1 << VID_CBITS)
24
25// a pixel can be one, two, or four bytes
26typedef byte pixel_t;
27
28typedef struct vrect_s
29{
30	int				x,y,width,height;
31	struct vrect_s	*pnext;
32} vrect_t;
33
34typedef struct
35{
36	pixel_t			*buffer;		// invisible buffer
37	pixel_t			*colormap;		// 256 * VID_GRADES size
38	unsigned short	*colormap16;	// 256 * VID_GRADES size
39	int				fullbright;		// index of first fullbright color
40	unsigned		rowbytes;	// may be > width if displayed in a window
41	unsigned		width;
42	unsigned		height;
43	float			aspect;		// width / height -- < 0 is taller than wide
44	int				numpages;
45	int				recalc_refdef;	// if true, recalc vid-based stuff
46	pixel_t			*conbuffer;
47	int				conrowbytes;
48	unsigned		conwidth;
49	unsigned		conheight;
50	int				maxwarpwidth;
51	int				maxwarpheight;
52	pixel_t			*direct;		// direct drawing to framebuffer, if not
53									//  NULL
54} viddef_t;
55
56extern	viddef_t	vid;				// global video state
57extern	unsigned short	d_8to16table[256];
58extern	unsigned	d_8to24table[256];
59extern void (*vid_menudrawfn)(void);
60extern void (*vid_menukeyfn)(int key);
61
62void	VID_SetPalette (unsigned char *palette);
63// called at startup and after any gamma correction
64
65void	VID_ShiftPalette (unsigned char *palette);
66// called for bonus and pain flashes, and for underwater color changes
67
68void	VID_Init (unsigned char *palette);
69// Called at startup to set up translation tables, takes 256 8 bit RGB values
70// the palette data will go away after the call, so it must be copied off if
71// the video driver will need it again
72
73void	VID_Shutdown (void);
74// Called at shutdown
75
76void	VID_Update (vrect_t *rects);
77// flushes the given rectangles from the view buffer to the screen
78
79int VID_SetMode (int modenum, unsigned char *palette);
80// sets the mode; only used by the Quake engine for resetting to mode 0 (the
81// base mode) on memory allocation failures
82
83void VID_HandlePause (qboolean pause);
84// called only on Win32, when pause happens, so the mouse can be released
85
86void VID_LockBuffer (void);
87void VID_UnlockBuffer (void);
88
89#ifdef GLQUAKE
90qboolean VID_Is8bit(void);
91#endif
92
93