ref: fb5c593052d24a3583bd71d517972ba0f59b14ac
dir: /src/i_video.c/
// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // $Id: i_video.c 47 2005-08-07 03:09:33Z fraggle $ // // Copyright(C) 1993-1996 Id Software, Inc. // Copyright(C) 2005 Simon Howard // // 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 the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA // 02111-1307, USA. // // $Log$ // Revision 1.16 2005/08/07 03:09:33 fraggle // Fix gamma correction // // Revision 1.15 2005/08/07 02:59:23 fraggle // Clear disk image when loading at startup // // Revision 1.14 2005/08/06 17:30:30 fraggle // Only change palette on screen updates // // Revision 1.13 2005/08/04 22:23:07 fraggle // Use zone memory function. Add command line options // // Revision 1.12 2005/08/04 19:54:56 fraggle // Use keysym value rather than unicode value (fixes problems with shift // key) // // Revision 1.11 2005/08/04 18:42:15 fraggle // Silence compiler warnings // // Revision 1.10 2005/08/04 01:13:46 fraggle // Loading disk // // Revision 1.9 2005/08/03 22:19:52 fraggle // Set some flags to fix palette and improve performance // // Revision 1.8 2005/08/03 21:58:02 fraggle // Working scale*2 // // Revision 1.7 2005/07/25 20:50:55 fraggle // mouse // // Revision 1.6 2005/07/24 02:14:04 fraggle // Move to SDL for graphics. // Translate key scancodes to correct internal format when reading // settings from config file - backwards compatible with config files // for original exes // // Revision 1.5 2005/07/23 21:32:47 fraggle // Add missing errno.h, fix crash on startup when no IWAD present // // Revision 1.4 2005/07/23 19:17:11 fraggle // Use ANSI-standard limit constants. Remove LINUX define. // // Revision 1.3 2005/07/23 17:27:04 fraggle // Stop crash on shutdown // // Revision 1.2 2005/07/23 16:44:55 fraggle // Update copyright to GNU GPL // // Revision 1.1.1.1 2005/07/23 16:19:58 fraggle // Initial import // // // DESCRIPTION: // DOOM graphics stuff for X11, UNIX. // //----------------------------------------------------------------------------- static const char rcsid[] = "$Id: i_video.c 47 2005-08-07 03:09:33Z fraggle $"; #include <ctype.h> #include <SDL.h> #include "w_wad.h" #include "z_zone.h" #include "doomstat.h" #include "i_system.h" #include "v_video.h" #include "m_argv.h" #include "m_swap.h" #include "d_main.h" #include "doomdef.h" static SDL_Surface *screen; #define POINTER_WARP_COUNTDOWN 1 // palette static SDL_Color palette[256]; static boolean palette_to_set; // Fake mouse handling. // This cannot work properly w/o DGA. // Needs an invisible mouse cursor at least. boolean grabMouse; // Blocky mode, // replace each 320x200 pixel with multiply*multiply pixels. // According to Dave Taylor, it still is a bonehead thing // to use .... static int multiply=1; // disk image data and background overwritten by the disk to be // restored by EndRead static byte *disk_image = NULL; static int disk_image_w, disk_image_h; static byte *saved_background; void I_BeginRead(void) { int y; if (disk_image == NULL) return; // save background and copy the disk image in for (y=0; y<disk_image_h; ++y) { byte *screenloc = screens[0] + (SCREENHEIGHT - 1 - disk_image_h + y) * SCREENWIDTH + (SCREENWIDTH - 1 - disk_image_w); memcpy(saved_background + y * disk_image_w, screenloc, disk_image_w); memcpy(screenloc, disk_image + y * disk_image_w, disk_image_w); } SDL_UpdateRect(screen, screen->w - disk_image_w, screen->h - disk_image_h, disk_image_w, disk_image_h); } void I_EndRead(void) { int y; if (disk_image == NULL) return; // save background and copy the disk image in for (y=0; y<disk_image_h; ++y) { byte *screenloc = screens[0] + (SCREENHEIGHT - 1 - disk_image_h + y) * SCREENWIDTH + (SCREENWIDTH - 1 - disk_image_w); memcpy(screenloc, saved_background + y * disk_image_w, disk_image_w); } SDL_UpdateRect(screen, screen->w - disk_image_w, screen->h - disk_image_h, disk_image_w, disk_image_h); } static void LoadDiskImage(void) { patch_t *disk; int y; disk = (patch_t *) W_CacheLumpName("STDISK", PU_STATIC); V_DrawPatch(0, 0, 0, disk); disk_image_w = SHORT(disk->width); disk_image_h = SHORT(disk->height); disk_image = Z_Malloc(disk_image_w * disk_image_h, PU_STATIC, NULL); saved_background = Z_Malloc(disk_image_w * disk_image_h, PU_STATIC, NULL); for (y=0; y<disk_image_h; ++y) { memcpy(disk_image + disk_image_w * y, screens[0] + SCREENWIDTH * y, disk_image_w); memset(screens[0] + SCREENWIDTH * y, 0, disk_image_w); } Z_Free(disk); } // // Translates the SDL key // int xlatekey(SDL_keysym *sym) { switch(sym->sym) { case SDLK_LEFT: return KEY_LEFTARROW; case SDLK_RIGHT: return KEY_RIGHTARROW; case SDLK_DOWN: return KEY_DOWNARROW; case SDLK_UP: return KEY_UPARROW; case SDLK_ESCAPE: return KEY_ESCAPE; case SDLK_RETURN: return KEY_ENTER; case SDLK_TAB: return KEY_TAB; case SDLK_F1: return KEY_F1; case SDLK_F2: return KEY_F2; case SDLK_F3: return KEY_F3; case SDLK_F4: return KEY_F4; case SDLK_F5: return KEY_F5; case SDLK_F6: return KEY_F6; case SDLK_F7: return KEY_F7; case SDLK_F8: return KEY_F8; case SDLK_F9: return KEY_F9; case SDLK_F10: return KEY_F10; case SDLK_F11: return KEY_F11; case SDLK_F12: return KEY_F12; case SDLK_BACKSPACE: return KEY_BACKSPACE; case SDLK_DELETE: return KEY_DEL; case SDLK_PAUSE: return KEY_PAUSE; case SDLK_EQUALS: case SDLK_KP_EQUALS: return KEY_EQUALS; case SDLK_MINUS: return KEY_MINUS; case SDLK_LSHIFT: case SDLK_RSHIFT: return KEY_RSHIFT; case SDLK_LCTRL: case SDLK_RCTRL: return KEY_RCTRL; case SDLK_LALT: case SDLK_LMETA: case SDLK_RALT: case SDLK_RMETA: return KEY_RALT; case SDLK_CAPSLOCK: return KEY_CAPSLOCK; case SDLK_SCROLLOCK: return KEY_SCRLCK; case SDLK_KP0: return KEYP_0; case SDLK_KP1: return KEYP_1; case SDLK_KP2: return KEYP_2; case SDLK_KP3: return KEYP_3; case SDLK_KP4: return KEYP_4; case SDLK_KP5: return KEYP_5; case SDLK_KP6: return KEYP_6; case SDLK_KP7: return KEYP_7; case SDLK_KP8: return KEYP_8; case SDLK_KP9: return KEYP_9; case SDLK_HOME: return KEY_HOME; case SDLK_INSERT: return KEY_INS; case SDLK_END: return KEY_END; case SDLK_PAGEUP: return KEY_PGUP; case SDLK_PAGEDOWN: return KEY_PGDN; case SDLK_KP_MULTIPLY: return KEYP_MULTIPLY; case SDLK_KP_PLUS: return KEYP_PLUS; case SDLK_KP_MINUS: return KEYP_MINUS; case SDLK_KP_DIVIDE: return KEYP_DIVIDE; default: return tolower(sym->sym); } } void I_ShutdownGraphics(void) { SDL_QuitSubSystem(SDL_INIT_VIDEO); } // // I_StartFrame // void I_StartFrame (void) { // er? } static int mousebuttonstate(void) { Uint8 state = SDL_GetMouseState(NULL, NULL); int result = 0; if (state & SDL_BUTTON(1)) result |= 1; if (state & SDL_BUTTON(2)) result |= 2; if (state & SDL_BUTTON(3)) result |= 4; return result; } boolean mousemoved = false; void I_GetEvent(void) { SDL_Event sdlevent; event_t event; // put event-grabbing stuff in here while (SDL_PollEvent(&sdlevent)) { switch (sdlevent.type) { case SDL_KEYDOWN: event.type = ev_keydown; event.data1 = xlatekey(&sdlevent.key.keysym); D_PostEvent(&event); break; case SDL_KEYUP: event.type = ev_keyup; event.data1 = xlatekey(&sdlevent.key.keysym); D_PostEvent(&event); break; case SDL_MOUSEMOTION: event.type = ev_mouse; event.data1 = mousebuttonstate(); event.data2 = sdlevent.motion.xrel * 8; event.data3 = -sdlevent.motion.yrel * 8; D_PostEvent(&event); break; case SDL_MOUSEBUTTONDOWN: event.type = ev_mouse; event.data1 = mousebuttonstate(); event.data2 = event.data3 = 0; D_PostEvent(&event); break; case SDL_MOUSEBUTTONUP: event.type = ev_mouse; event.data1 = mousebuttonstate(); event.data2 = event.data3 = 0; D_PostEvent(&event); break; #if 0 case ButtonPress: event.type = ev_mouse; event.data1 = (X_event.xbutton.state & Button1Mask) | (X_event.xbutton.state & Button2Mask ? 2 : 0) | (X_event.xbutton.state & Button3Mask ? 4 : 0) | (X_event.xbutton.button == Button1) | (X_event.xbutton.button == Button2 ? 2 : 0) | (X_event.xbutton.button == Button3 ? 4 : 0); event.data2 = event.data3 = 0; D_PostEvent(&event); // fprintf(stderr, "b"); break; case ButtonRelease: event.type = ev_mouse; event.data1 = (X_event.xbutton.state & Button1Mask) | (X_event.xbutton.state & Button2Mask ? 2 : 0) | (X_event.xbutton.state & Button3Mask ? 4 : 0); // suggest parentheses around arithmetic in operand of | event.data1 = event.data1 ^ (X_event.xbutton.button == Button1 ? 1 : 0) ^ (X_event.xbutton.button == Button2 ? 2 : 0) ^ (X_event.xbutton.button == Button3 ? 4 : 0); event.data2 = event.data3 = 0; D_PostEvent(&event); // fprintf(stderr, "bu"); break; case MotionNotify: event.type = ev_mouse; event.data1 = (X_event.xmotion.state & Button1Mask) | (X_event.xmotion.state & Button2Mask ? 2 : 0) | (X_event.xmotion.state & Button3Mask ? 4 : 0); event.data2 = (X_event.xmotion.x - lastmousex) << 2; event.data3 = (lastmousey - X_event.xmotion.y) << 2; if (event.data2 || event.data3) { lastmousex = X_event.xmotion.x; lastmousey = X_event.xmotion.y; if (X_event.xmotion.x != X_width/2 && X_event.xmotion.y != X_height/2) { D_PostEvent(&event); // fprintf(stderr, "m"); mousemoved = false; } else { mousemoved = true; } } break; case Expose: case ConfigureNotify: break; default: if (doShm && X_event.type == X_shmeventtype) shmFinished = true; break; #endif } } } // // I_StartTic // void I_StartTic (void) { I_GetEvent(); #if 0 if (!X_display) return; while (XPending(X_display)) I_GetEvent(); // Warp the pointer back to the middle of the window // or it will wander off - that is, the game will // loose input focus within X11. if (grabMouse) { if (!--doPointerWarp) { XWarpPointer( X_display, None, X_mainWindow, 0, 0, 0, 0, X_width/2, X_height/2); doPointerWarp = POINTER_WARP_COUNTDOWN; } } mousemoved = false; #endif } // // I_UpdateNoBlit // void I_UpdateNoBlit (void) { // what is this? } // // I_FinishUpdate // void I_FinishUpdate (void) { static int lasttic; int tics; int i; // UNUSED static unsigned char *bigscreen=0; // draws little dots on the bottom of the screen if (devparm) { i = I_GetTime(); tics = i - lasttic; lasttic = i; if (tics > 20) tics = 20; for (i=0 ; i<tics*2 ; i+=2) screens[0][ (SCREENHEIGHT-1)*SCREENWIDTH + i] = 0xff; for ( ; i<20*2 ; i+=2) screens[0][ (SCREENHEIGHT-1)*SCREENWIDTH + i] = 0x0; } // scales the screen size before blitting it if (multiply == 2) { unsigned int *olineptrs[2]; unsigned int *ilineptr; int x, y, i; unsigned int twoopixels; unsigned int twomoreopixels; unsigned int fouripixels; unsigned int X_width = screen->pitch; Uint8 *screen_pixels = (Uint8 *) screen->pixels; SDL_LockSurface(screen); ilineptr = (unsigned int *) (screens[0]); for (i=0 ; i<2 ; i++) olineptrs[i] = (unsigned int *) &screen_pixels[i*X_width]; y = SCREENHEIGHT; while (y--) { x = SCREENWIDTH; do { fouripixels = *ilineptr++; twoopixels = (fouripixels & 0xff000000) | ((fouripixels>>8) & 0xffff00) | ((fouripixels>>16) & 0xff); twomoreopixels = ((fouripixels<<16) & 0xff000000) | ((fouripixels<<8) & 0xffff00) | (fouripixels & 0xff); #ifdef __BIG_ENDIAN__ *olineptrs[0]++ = twoopixels; *olineptrs[1]++ = twoopixels; *olineptrs[0]++ = twomoreopixels; *olineptrs[1]++ = twomoreopixels; #else *olineptrs[0]++ = twomoreopixels; *olineptrs[1]++ = twomoreopixels; *olineptrs[0]++ = twoopixels; *olineptrs[1]++ = twoopixels; #endif } while (x-=4); olineptrs[0] += X_width/4; olineptrs[1] += X_width/4; } SDL_UnlockSurface(screen); } #if 0 else if (multiply == 3) { unsigned int *olineptrs[3]; unsigned int *ilineptr; int x, y, i; unsigned int fouropixels[3]; unsigned int fouripixels; ilineptr = (unsigned int *) (screens[0]); for (i=0 ; i<3 ; i++) olineptrs[i] = (unsigned int *) &image->data[i*X_width]; y = SCREENHEIGHT; while (y--) { x = SCREENWIDTH; do { fouripixels = *ilineptr++; fouropixels[0] = (fouripixels & 0xff000000) | ((fouripixels>>8) & 0xff0000) | ((fouripixels>>16) & 0xffff); fouropixels[1] = ((fouripixels<<8) & 0xff000000) | (fouripixels & 0xffff00) | ((fouripixels>>8) & 0xff); fouropixels[2] = ((fouripixels<<16) & 0xffff0000) | ((fouripixels<<8) & 0xff00) | (fouripixels & 0xff); #ifdef __BIG_ENDIAN__ *olineptrs[0]++ = fouropixels[0]; *olineptrs[1]++ = fouropixels[0]; *olineptrs[2]++ = fouropixels[0]; *olineptrs[0]++ = fouropixels[1]; *olineptrs[1]++ = fouropixels[1]; *olineptrs[2]++ = fouropixels[1]; *olineptrs[0]++ = fouropixels[2]; *olineptrs[1]++ = fouropixels[2]; *olineptrs[2]++ = fouropixels[2]; #else *olineptrs[0]++ = fouropixels[2]; *olineptrs[1]++ = fouropixels[2]; *olineptrs[2]++ = fouropixels[2]; *olineptrs[0]++ = fouropixels[1]; *olineptrs[1]++ = fouropixels[1]; *olineptrs[2]++ = fouropixels[1]; *olineptrs[0]++ = fouropixels[0]; *olineptrs[1]++ = fouropixels[0]; *olineptrs[2]++ = fouropixels[0]; #endif } while (x-=4); olineptrs[0] += 2*X_width/4; olineptrs[1] += 2*X_width/4; olineptrs[2] += 2*X_width/4; } } else if (multiply == 4) { // Broken. Gotta fix this some day. void Expand4(unsigned *, double *); Expand4 ((unsigned *)(screens[0]), (double *) (image->data)); } #endif // draw to screen if (palette_to_set) { SDL_SetColors(screen, palette, 0, 256); palette_to_set = 0; } else { SDL_Flip(screen); } } // // I_ReadScreen // void I_ReadScreen (byte* scr) { memcpy (scr, screens[0], SCREENWIDTH*SCREENHEIGHT); } // // I_SetPalette // void I_SetPalette (byte *doompalette) { int i; for (i=0; i<256; ++i) { palette[i].r = gammatable[usegamma][*doompalette++]; palette[i].g = gammatable[usegamma][*doompalette++]; palette[i].b = gammatable[usegamma][*doompalette++]; } palette_to_set = 1; } void I_InitGraphics(void) { int flags = 0; SDL_Init(SDL_INIT_VIDEO); flags |= SDL_SWSURFACE | SDL_HWPALETTE | SDL_DOUBLEBUF; // default to fullscreen mode, allow override with command line // nofullscreen because we love prboom if (!M_CheckParm("-window") && !M_CheckParm("-nofullscreen")) { flags |= SDL_FULLSCREEN; } // scale-by-2 mode if (M_CheckParm("-2")) { multiply = 2; } screen = SDL_SetVideoMode(SCREENWIDTH*multiply, SCREENHEIGHT*multiply, 8, flags); if (screen == NULL) { I_Error("Error setting video mode: %s\n", SDL_GetError()); } if (multiply == 1) screens[0] = (unsigned char *) (screen->pixels); else screens[0] = (unsigned char *) Z_Malloc (SCREENWIDTH * SCREENHEIGHT, PU_STATIC, NULL); SDL_ShowCursor(0); SDL_WM_GrabInput(SDL_GRAB_ON); LoadDiskImage(); { SDL_Event dummy; while (SDL_PollEvent(&dummy)); } } unsigned exptable[256]; void InitExpand (void) { int i; for (i=0 ; i<256 ; i++) exptable[i] = i | (i<<8) | (i<<16) | (i<<24); } double exptable2[256*256]; void InitExpand2 (void) { int i; int j; // UNUSED unsigned iexp, jexp; double* exp; union { double d; unsigned u[2]; } pixel; exp = exptable2; for (i=0 ; i<256 ; i++) { pixel.u[0] = i | (i<<8) | (i<<16) | (i<<24); for (j=0 ; j<256 ; j++) { pixel.u[1] = j | (j<<8) | (j<<16) | (j<<24); *exp++ = pixel.d; } } } int inited; void Expand4 ( unsigned* lineptr, double* xline ) { double dpixel; unsigned x; unsigned y; unsigned fourpixels; unsigned step; double* exp; exp = exptable2; if (!inited) { inited = 1; InitExpand2 (); } step = 3*SCREENWIDTH/2; y = SCREENHEIGHT-1; do { x = SCREENWIDTH; do { fourpixels = lineptr[0]; dpixel = *(double *)( (int)exp + ( (fourpixels&0xffff0000)>>13) ); xline[0] = dpixel; xline[160] = dpixel; xline[320] = dpixel; xline[480] = dpixel; dpixel = *(double *)( (int)exp + ( (fourpixels&0xffff)<<3 ) ); xline[1] = dpixel; xline[161] = dpixel; xline[321] = dpixel; xline[481] = dpixel; fourpixels = lineptr[1]; dpixel = *(double *)( (int)exp + ( (fourpixels&0xffff0000)>>13) ); xline[2] = dpixel; xline[162] = dpixel; xline[322] = dpixel; xline[482] = dpixel; dpixel = *(double *)( (int)exp + ( (fourpixels&0xffff)<<3 ) ); xline[3] = dpixel; xline[163] = dpixel; xline[323] = dpixel; xline[483] = dpixel; fourpixels = lineptr[2]; dpixel = *(double *)( (int)exp + ( (fourpixels&0xffff0000)>>13) ); xline[4] = dpixel; xline[164] = dpixel; xline[324] = dpixel; xline[484] = dpixel; dpixel = *(double *)( (int)exp + ( (fourpixels&0xffff)<<3 ) ); xline[5] = dpixel; xline[165] = dpixel; xline[325] = dpixel; xline[485] = dpixel; fourpixels = lineptr[3]; dpixel = *(double *)( (int)exp + ( (fourpixels&0xffff0000)>>13) ); xline[6] = dpixel; xline[166] = dpixel; xline[326] = dpixel; xline[486] = dpixel; dpixel = *(double *)( (int)exp + ( (fourpixels&0xffff)<<3 ) ); xline[7] = dpixel; xline[167] = dpixel; xline[327] = dpixel; xline[487] = dpixel; lineptr+=4; xline+=8; } while (x-=16); xline += step; } while (y--); }