2 * $Source: /cvs/cvsroot/d2x/arch/sdl/gr.c,v $
5 * $Date: 2001-10-25 08:25:34 $
9 * $Log: not supported by cvs2svn $
10 * Revision 1.5 2001/10/09 08:17:07 bradleyb
11 * changed window caption to include version info
13 * Revision 1.4 2001/01/31 13:59:23 bradleyb
14 * Fullscreen toggle added to screen res menu
16 * Revision 1.3 2001/01/29 13:47:52 bradleyb
17 * Fixed build, some minor cleanups.
33 //added on 9/30/98 by Matt Mueller to set the title bar. Woohoo!
39 //added 10/05/98 by Matt Mueller - make fullscreen mode optional
42 int sdl_video_flags = SDL_SWSURFACE | SDL_HWPALETTE;
43 char checkvidmodeok=0;
50 //added 05/19/99 Matt Mueller - locking stuff
54 int gr_testlocklevel=0;
56 inline void gr_dolock(const char *file,int line) {
58 if ( gr_testlocklevel==1 && SDL_MUSTLOCK(screen) ) {
60 chcksetwritable(screen.pixels,screen->w*screen->h*screen->format->BytesPerPixel);
62 if ( SDL_LockSurface(screen) < 0 )Error("could not lock screen (%s:%i)\n",file,line);
65 inline void gr_dounlock(void) {
67 if (gr_testlocklevel==0 && SDL_MUSTLOCK(screen) ) {
68 SDL_UnlockSurface(screen);
70 chcksetunwritable(screen.pixels,screen->w*screen->h*screen->format->BytesPerPixel);
77 void gr_palette_clear(); // Function prototype for gr_init;
82 //added 05/19/99 Matt Mueller - locking stuff
86 SDL_UpdateRect(screen,0,0,0,0);
89 extern int VGA_current_mode; // DPH: kludge - remove at all costs
91 int gr_set_mode(u_int32_t mode)
103 VGA_current_mode = mode;
105 if (screen != NULL) gr_palette_clear();
107 //added on 11/06/98 by Matt Mueller to set the title bar. (moved from below)
108 //sekmu: might wanna copy this litte blurb to one of the text files or something
109 //we want to set it here so that X window manager "Style" type commands work
110 //for example, in fvwm2 or fvwm95:
111 //Style "D1X*" NoTitle, NoHandles, BorderWidth 0
112 //if you can't use -fullscreen like me (crashes X), this is a big help in
113 //getting the window centered correctly (if you use SmartPlacement)
114 SDL_WM_SetCaption(DESCENT_VERSION, "Descent II");
117 //edited 10/05/98 by Matt Mueller - make fullscreen mode optional
118 // changed by adb on 980913: added SDL_HWPALETTE (should be option?)
119 // changed by someone on 980923 to add SDL_FULLSCREEN
120 if(!checkvidmodeok || SDL_VideoModeOK(w,h,8,sdl_video_flags)){
121 screen = SDL_SetVideoMode(w, h, 8, sdl_video_flags);
125 // end changes by someone
126 // end changes by adb
128 if (screen == NULL) {
129 Error("Could not set %dx%dx8 video mode\n",w,h);
132 memset( grd_curscreen, 0, sizeof(grs_screen));
133 grd_curscreen->sc_mode = mode;
134 grd_curscreen->sc_w = w;
135 grd_curscreen->sc_h = h;
136 grd_curscreen->sc_aspect = fixdiv(grd_curscreen->sc_w*3,grd_curscreen->sc_h*4);
137 grd_curscreen->sc_canvas.cv_bitmap.bm_x = 0;
138 grd_curscreen->sc_canvas.cv_bitmap.bm_y = 0;
139 grd_curscreen->sc_canvas.cv_bitmap.bm_w = w;
140 grd_curscreen->sc_canvas.cv_bitmap.bm_h = h;
141 grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = screen->pitch;
142 grd_curscreen->sc_canvas.cv_bitmap.bm_type = BM_LINEAR;
143 grd_curscreen->sc_canvas.cv_bitmap.bm_data = (unsigned char *)screen->pixels;
144 gr_set_current_canvas(NULL);
145 //gr_enable_default_palette_loading();
147 //added on 9/30/98 by Matt Mueller to hide the mouse if its over the game window
150 //--moved up--added on 9/30/98 by Matt Mueller to set the title bar. Woohoo!
151 //--moved up-- SDL_WM_SetCaption(DESCENT_VERSION " " D1X_DATE, NULL);
152 //--moved up--end addition -MM
154 // gamefont_choose_game_font(w,h);
158 int gr_check_fullscreen(void){
159 return (sdl_video_flags & SDL_FULLSCREEN)?1:0;
162 int gr_toggle_fullscreen(void){
163 sdl_video_flags^=SDL_FULLSCREEN;
165 grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
167 SDL_WM_ToggleFullScreen(screen);
168 return (sdl_video_flags & SDL_FULLSCREEN)?1:0;
174 int mode = SM(640,480);
175 // Only do this function once!
179 if (SDL_Init(SDL_INIT_VIDEO) < 0)
181 Error("SDL library video initialisation failed: %s.",SDL_GetError());
183 MALLOC( grd_curscreen,grs_screen,1 );
184 memset( grd_curscreen, 0, sizeof(grs_screen));
186 //added 10/05/98 by Matt Mueller - make fullscreen mode optional
187 if (FindArg("-fullscreen"))
188 sdl_video_flags|=SDL_FULLSCREEN;
190 //added 05/19/99 Matt Mueller - make HW surface optional
191 if (FindArg("-hwsurface"))
192 sdl_video_flags|=SDL_HWSURFACE;
194 if (FindArg("-nosdlvidmodecheck"))
198 if ((retcode=gr_set_mode(mode)))
202 grd_curscreen->sc_canvas.cv_color = 0;
203 grd_curscreen->sc_canvas.cv_drawmode = 0;
204 grd_curscreen->sc_canvas.cv_font = NULL;
205 grd_curscreen->sc_canvas.cv_font_fg_color = 0;
206 grd_curscreen->sc_canvas.cv_font_bg_color = 0;
207 gr_set_current_canvas( &grd_curscreen->sc_canvas );
210 // added on 980913 by adb to add cleanup
212 // end changes by adb
222 d_free(grd_curscreen);
226 // Palette functions follow.
228 static int last_r=0, last_g=0, last_b=0;
230 void gr_palette_clear()
232 SDL_Palette *palette;
233 SDL_Color colors[256];
236 palette = screen->format->palette;
238 if (palette == NULL) {
239 return; // Display is not palettised
242 ncolors = palette->ncolors;
243 memset(colors, 0, ncolors * sizeof(SDL_Color));
245 SDL_SetColors(screen, colors, 0, 256);
247 gr_palette_faded_out = 1;
251 void gr_palette_step_up( int r, int g, int b )
254 ubyte *p = gr_palette;
257 SDL_Palette *palette;
258 SDL_Color colors[256];
260 if (gr_palette_faded_out) return;
262 if ( (r==last_r) && (g==last_g) && (b==last_b) ) return;
268 palette = screen->format->palette;
270 if (palette == NULL) {
271 return; // Display is not palettised
274 for (i=0; i<256; i++) {
275 temp = (int)(*p++) + r + gr_palette_gamma;
277 else if (temp>63) temp=63;
278 colors[i].r = temp * 4;
279 temp = (int)(*p++) + g + gr_palette_gamma;
281 else if (temp>63) temp=63;
282 colors[i].g = temp * 4;
283 temp = (int)(*p++) + b + gr_palette_gamma;
285 else if (temp>63) temp=63;
286 colors[i].b = temp * 4;
289 SDL_SetColors(screen, colors, 0, 256);
292 //added on 980913 by adb to fix palette problems
293 // need a min without side effects...
295 static inline int min(int x, int y) { return x < y ? x : y; }
298 void gr_palette_load( ubyte *pal )
301 SDL_Palette *palette;
302 SDL_Color colors[256];
304 for (i=0; i<768; i++ ) {
305 gr_current_pal[i] = pal[i];
306 if (gr_current_pal[i] > 63) gr_current_pal[i] = 63;
309 palette = screen->format->palette;
311 if (palette == NULL) {
312 return; // Display is not palettised
315 for (i = 0, j = 0; j < 256; j++) {
316 //changed on 980913 by adb to fix palette problems
317 colors[j].r = (min(gr_current_pal[i++] + gr_palette_gamma, 63)) * 4;
318 colors[j].g = (min(gr_current_pal[i++] + gr_palette_gamma, 63)) * 4;
319 colors[j].b = (min(gr_current_pal[i++] + gr_palette_gamma, 63)) * 4;
322 SDL_SetColors(screen, colors, 0, 256);
324 gr_palette_faded_out = 0;
325 init_computed_colors();
330 int gr_palette_fade_out(ubyte *pal, int nsteps, int allow_keys)
334 fix fade_palette[768];
335 fix fade_palette_delta[768];
337 SDL_Palette *palette;
338 SDL_Color fade_colors[256];
340 if (gr_palette_faded_out) return 0;
342 palette = screen->format->palette;
343 if (palette == NULL) {
344 return -1; // Display is not palettised
347 if (pal==NULL) pal=gr_current_pal;
349 for (i=0; i<768; i++ ) {
350 gr_current_pal[i] = pal[i];
351 fade_palette[i] = i2f(pal[i]);
352 fade_palette_delta[i] = fade_palette[i] / nsteps;
354 for (j=0; j<nsteps; j++ ) {
355 for (i=0, k = 0; k<256; k++ ) {
356 fade_palette[i] -= fade_palette_delta[i];
357 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
358 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
359 c = f2i(fade_palette[i]);
361 fade_colors[k].r = c * 4;
364 fade_palette[i] -= fade_palette_delta[i];
365 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
366 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
367 c = f2i(fade_palette[i]);
369 fade_colors[k].g = c * 4;
372 fade_palette[i] -= fade_palette_delta[i];
373 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
374 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
375 c = f2i(fade_palette[i]);
377 fade_colors[k].b = c * 4;
381 SDL_SetColors(screen, fade_colors, 0, 256);
384 gr_palette_faded_out = 1;
390 int gr_palette_fade_in(ubyte *pal, int nsteps, int allow_keys)
392 int i, j, k, ncolors;
394 fix fade_palette[768];
395 fix fade_palette_delta[768];
397 SDL_Palette *palette;
398 SDL_Color fade_colors[256];
400 if (!gr_palette_faded_out) return 0;
402 palette = screen->format->palette;
404 if (palette == NULL) {
405 return -1; // Display is not palettised
408 ncolors = palette->ncolors;
410 for (i=0; i<768; i++ ) {
411 gr_current_pal[i] = pal[i];
413 fade_palette_delta[i] = i2f(pal[i]) / nsteps;
416 for (j=0; j<nsteps; j++ ) {
417 for (i=0, k = 0; k<256; k++ ) {
418 fade_palette[i] += fade_palette_delta[i];
419 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
420 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
421 c = f2i(fade_palette[i]);
423 fade_colors[k].r = c * 4;
426 fade_palette[i] += fade_palette_delta[i];
427 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
428 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
429 c = f2i(fade_palette[i]);
431 fade_colors[k].g = c * 4;
434 fade_palette[i] += fade_palette_delta[i];
435 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
436 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
437 c = f2i(fade_palette[i]);
439 fade_colors[k].b = c * 4;
443 SDL_SetColors(screen, fade_colors, 0, 256);
445 //added on 980913 by adb to fix palette problems
446 gr_palette_load(pal);
449 gr_palette_faded_out = 0;
455 void gr_palette_read(ubyte * pal)
457 SDL_Palette *palette;
460 palette = screen->format->palette;
462 if (palette == NULL) {
463 return; // Display is not palettised
466 for (i = 0, j=0; i < 256; i++) {
467 pal[j++] = palette->colors[i].r / 4;
468 pal[j++] = palette->colors[i].g / 4;
469 pal[j++] = palette->colors[i].b / 4;