ref: 0b9b33f9b960cd9c56b4d7d7030b8d4676610d4f
dir: /vid.h/
// vid.h -- video driver defs
#define VID_CBITS 6
#define VID_GRADES (1 << VID_CBITS)
// a pixel can be one, two, or four bytes
typedef byte pixel_t;
typedef struct vrect_s
{
int x,y,width,height;
struct vrect_s *pnext;
} vrect_t;
typedef struct
{
pixel_t *buffer; // invisible buffer
pixel_t *colormap; // 256 * VID_GRADES size
unsigned short *colormap16; // 256 * VID_GRADES size
int fullbright; // index of first fullbright color
unsigned rowbytes; // may be > width if displayed in a window
unsigned width;
unsigned height;
float aspect; // width / height -- < 0 is taller than wide
int numpages;
int recalc_refdef; // if true, recalc vid-based stuff
pixel_t *conbuffer;
int conrowbytes;
unsigned conwidth;
unsigned conheight;
int maxwarpwidth;
int maxwarpheight;
pixel_t *direct; // direct drawing to framebuffer, if not
// NULL
} viddef_t;
extern viddef_t vid; // global video state
extern unsigned short d_8to16table[256];
extern unsigned d_8to24table[256];
extern void (*vid_menudrawfn)(void);
extern void (*vid_menukeyfn)(int key);
void VID_SetPalette (uchar *palette);
// called at startup and after any gamma correction
void VID_ShiftPalette (uchar *palette);
// called for bonus and pain flashes, and for underwater color changes
void VID_Init (uchar *palette);
// 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_Shutdown (void);
// Called at shutdown
void VID_Update (vrect_t *rects);
// flushes the given rectangles from the view buffer to the screen