| Franklin Wei | 5d05b9d | 2018-02-11 15:34:30 -0500 | [diff] [blame] | 1 | /* |
| 2 | Copyright (C) 1996-1997 Id Software, Inc. |
| 3 | |
| 4 | This program is free software; you can redistribute it and/or |
| 5 | modify it under the terms of the GNU General Public License |
| 6 | as published by the Free Software Foundation; either version 2 |
| 7 | of the License, or (at your option) any later version. |
| 8 | |
| 9 | This program is distributed in the hope that it will be useful, |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 12 | |
| 13 | See the GNU General Public License for more details. |
| 14 | |
| 15 | You should have received a copy of the GNU General Public License |
| 16 | along with this program; if not, write to the Free Software |
| 17 | Foundation, 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 |
| 26 | typedef byte pixel_t; |
| 27 | |
| 28 | typedef struct vrect_s |
| 29 | { |
| 30 | int x,y,width,height; |
| 31 | struct vrect_s *pnext; |
| 32 | } vrect_t; |
| 33 | |
| 34 | typedef 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 | |
| 56 | extern viddef_t vid; // global video state |
| 57 | extern unsigned short d_8to16table[256]; |
| 58 | extern unsigned d_8to24table[256]; |
| 59 | extern void (*vid_menudrawfn)(void); |
| 60 | extern void (*vid_menukeyfn)(int key); |
| 61 | |
| 62 | void VID_SetPalette (unsigned char *palette); |
| 63 | // called at startup and after any gamma correction |
| 64 | |
| 65 | void VID_ShiftPalette (unsigned char *palette); |
| 66 | // called for bonus and pain flashes, and for underwater color changes |
| 67 | |
| 68 | void 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 | |
| 73 | void VID_Shutdown (void); |
| 74 | // Called at shutdown |
| 75 | |
| 76 | void VID_Update (vrect_t *rects); |
| 77 | // flushes the given rectangles from the view buffer to the screen |
| 78 | |
| 79 | int 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 |