quakeforge/include/QF/vid.h

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/*
vid.h
video driver defs
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
$Id$
*/
#ifndef __vid_h_
#define __vid_h_
#include "QF/qtypes.h"
#include "QF/vrect.h"
#define VID_CBITS 6
#define VID_GRADES (1 << VID_CBITS)
struct cvar_s;
extern byte *vid_colormap;
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extern unsigned char d_15to8table[65536];
extern struct cvar_s *vid_fullscreen;
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extern struct cvar_s *vid_system_gamma;
extern struct cvar_s *vid_width;
extern struct cvar_s *vid_height;
extern struct cvar_s *vid_bitdepth;
typedef struct {
qboolean initialized;
void *buffer; // invisible buffer
short *zbuffer;
void *surfcache;
byte *basepal; // 256 * 3
byte *palette; // 256 * 3
byte *colormap8; // 256 * VID_GRADES size
unsigned short *colormap16; // 256 * VID_GRADES size
unsigned int *colormap32; // 256 * VID_GRADES size
int fullbright; // index of first fullbright color
unsigned int rowbytes; // may be > width if displayed in a window
unsigned int width;
unsigned int height;
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float aspect; // width / height -- < 1 is taller than wide
int numpages;
qboolean recalc_refdef; // if true, recalc vid-based stuff
qboolean cshift_changed;
void *conbuffer;
int conrowbytes;
unsigned int conwidth;
unsigned int conheight;
int maxwarpwidth;
int maxwarpheight;
byte *direct; // direct drawing to framebuffer, if not
// NULL
int (*surf_cache_size)(int width, int height);
void (*flush_caches)(void);
void (*init_caches)(void *cache, int size);
void (*do_screen_buffer)(void);
} viddef_t;
extern viddef_t vid; // global video state
extern unsigned short d_8to16table[256];
extern unsigned int d_8to24table[256];
extern byte gammatable[256];
extern struct cvar_s *vid_gamma;
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extern qboolean vid_gamma_avail;
// called at startup and after any gamma correction
void VID_SetPalette (unsigned char *palette);
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void VID_Init8bitPalette (void);
// called for bonus and pain flashes, and for underwater color changes
void VID_ShiftPalette (unsigned char *palette);
void VID_Init_Cvars (void);
// Called at startup to set up translation tables, takes 256 8 bit RGB values
// the palette data will go away after the call, so it must be copied off if
// the video driver will need it again
void VID_Init (unsigned char *);
// Called at shutdown
void VID_Shutdown (void);
// flushes the given rectangles from the view buffer to the screen
void VID_Update (vrect_t *rects);
// sets the mode; used only by the Quake engine for resetting to mode 0 (the
// base mode) on memory allocation failures
// or not
// int VID_SetMode (int modenum, unsigned char *palette);
void VID_InitBuffers (void);
void VID_LockBuffer (void);
void VID_UnlockBuffer (void);
qboolean VID_Is8bit (void);
void VID_RaiseWindow (void);
void VID_MinimiseWindow (void);
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void VID_SetCaption (const char *text);
// used to set window caption
void VID_GetWindowSize (int def_w, int def_h);
void VID_InitGamma (unsigned char *);
double VID_GetGamma (void);
qboolean VID_SetGamma (double);
void VID_UpdateGamma (struct cvar_s *);
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void GL_Init_Common (void);
void VID_MakeColormaps (int fullbrights, byte *pal);
void VGA_UpdatePlanarScreen (void *srcbuffer);
#endif // __vid_h_