2 * $Source: /cvs/cvsroot/d2x/arch/sdl/gr.c,v $
5 * $Date: 2002-02-16 02:08:31 $
9 * $Log: not supported by cvs2svn $
10 * Revision 1.3 2002/02/14 11:29:31 bradleyb
11 * allow gr_init lowres
13 * Revision 1.2 2001/10/31 07:41:54 bradleyb
16 * Revision 1.1 2001/10/25 08:25:34 bradleyb
17 * Finished moving stuff to arch/blah. I know, it's ugly, but It'll be easier to sync with d1x.
19 * Revision 1.5 2001/10/09 08:17:07 bradleyb
20 * changed window caption to include version info
22 * Revision 1.4 2001/01/31 13:59:23 bradleyb
23 * Fullscreen toggle added to screen res menu
25 * Revision 1.3 2001/01/29 13:47:52 bradleyb
26 * Fixed build, some minor cleanups.
38 #ifndef SDL_VERSION_ATLEAST
48 //added on 9/30/98 by Matt Mueller to set the title bar. Woohoo!
54 //added 10/05/98 by Matt Mueller - make fullscreen mode optional
57 int sdl_video_flags = SDL_SWSURFACE | SDL_HWPALETTE;
58 char checkvidmodeok=0;
65 //added 05/19/99 Matt Mueller - locking stuff
69 int gr_testlocklevel=0;
71 inline void gr_dolock(const char *file,int line) {
73 if ( gr_testlocklevel==1 && SDL_MUSTLOCK(screen) ) {
75 chcksetwritable(screen.pixels,screen->w*screen->h*screen->format->BytesPerPixel);
77 if ( SDL_LockSurface(screen) < 0 )Error("could not lock screen (%s:%i)\n",file,line);
80 inline void gr_dounlock(void) {
82 if (gr_testlocklevel==0 && SDL_MUSTLOCK(screen) ) {
83 SDL_UnlockSurface(screen);
85 chcksetunwritable(screen.pixels,screen->w*screen->h*screen->format->BytesPerPixel);
92 void gr_palette_clear(); // Function prototype for gr_init;
97 //added 05/19/99 Matt Mueller - locking stuff
100 SDL_UpdateRect(screen,0,0,0,0);
103 extern int VGA_current_mode; // DPH: kludge - remove at all costs
105 int gr_set_mode(u_int32_t mode)
118 VGA_current_mode = mode;
120 if (screen != NULL) gr_palette_clear();
122 //added on 11/06/98 by Matt Mueller to set the title bar. (moved from below)
123 //sekmu: might wanna copy this litte blurb to one of the text files or something
124 //we want to set it here so that X window manager "Style" type commands work
125 //for example, in fvwm2 or fvwm95:
126 //Style "D1X*" NoTitle, NoHandles, BorderWidth 0
127 //if you can't use -fullscreen like me (crashes X), this is a big help in
128 //getting the window centered correctly (if you use SmartPlacement)
129 SDL_WM_SetCaption(DESCENT_VERSION, "Descent II");
132 //edited 10/05/98 by Matt Mueller - make fullscreen mode optional
133 // changed by adb on 980913: added SDL_HWPALETTE (should be option?)
134 // changed by someone on 980923 to add SDL_FULLSCREEN
135 if(!checkvidmodeok || SDL_VideoModeOK(w,h,8,sdl_video_flags)){
136 screen = SDL_SetVideoMode(w, h, 8, sdl_video_flags);
140 // end changes by someone
141 // end changes by adb
143 if (screen == NULL) {
144 Error("Could not set %dx%dx8 video mode\n",w,h);
147 memset( grd_curscreen, 0, sizeof(grs_screen));
148 grd_curscreen->sc_mode = mode;
149 grd_curscreen->sc_w = w;
150 grd_curscreen->sc_h = h;
151 grd_curscreen->sc_aspect = fixdiv(grd_curscreen->sc_w*3,grd_curscreen->sc_h*4);
152 grd_curscreen->sc_canvas.cv_bitmap.bm_x = 0;
153 grd_curscreen->sc_canvas.cv_bitmap.bm_y = 0;
154 grd_curscreen->sc_canvas.cv_bitmap.bm_w = w;
155 grd_curscreen->sc_canvas.cv_bitmap.bm_h = h;
156 grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = screen->pitch;
157 grd_curscreen->sc_canvas.cv_bitmap.bm_type = BM_LINEAR;
158 grd_curscreen->sc_canvas.cv_bitmap.bm_data = (unsigned char *)screen->pixels;
159 gr_set_current_canvas(NULL);
160 //gr_enable_default_palette_loading();
162 //added on 9/30/98 by Matt Mueller to hide the mouse if its over the game window
165 //--moved up--added on 9/30/98 by Matt Mueller to set the title bar. Woohoo!
166 //--moved up-- SDL_WM_SetCaption(DESCENT_VERSION " " D1X_DATE, NULL);
167 //--moved up--end addition -MM
169 // gamefont_choose_game_font(w,h);
173 int gr_check_fullscreen(void){
174 return (sdl_video_flags & SDL_FULLSCREEN)?1:0;
177 int gr_toggle_fullscreen(void){
178 sdl_video_flags^=SDL_FULLSCREEN;
179 #if (SDL_COMPILEDVERSION < SDL_VERSIONNUM(1,0,5))
180 grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
182 SDL_WM_ToggleFullScreen(screen);
184 return (sdl_video_flags & SDL_FULLSCREEN)?1:0;
190 int mode = MenuHires?SM(640,480):SM(320,200);
191 // Only do this function once!
195 if (SDL_Init(SDL_INIT_VIDEO) < 0)
197 Error("SDL library video initialisation failed: %s.",SDL_GetError());
199 MALLOC( grd_curscreen,grs_screen,1 );
200 memset( grd_curscreen, 0, sizeof(grs_screen));
202 //added 10/05/98 by Matt Mueller - make fullscreen mode optional
203 if (FindArg("-fullscreen"))
204 sdl_video_flags|=SDL_FULLSCREEN;
206 //added 05/19/99 Matt Mueller - make HW surface optional
207 if (FindArg("-hwsurface"))
208 sdl_video_flags|=SDL_HWSURFACE;
210 if (FindArg("-nosdlvidmodecheck"))
214 if ((retcode=gr_set_mode(mode)))
218 grd_curscreen->sc_canvas.cv_color = 0;
219 grd_curscreen->sc_canvas.cv_drawmode = 0;
220 grd_curscreen->sc_canvas.cv_font = NULL;
221 grd_curscreen->sc_canvas.cv_font_fg_color = 0;
222 grd_curscreen->sc_canvas.cv_font_bg_color = 0;
223 gr_set_current_canvas( &grd_curscreen->sc_canvas );
226 // added on 980913 by adb to add cleanup
228 // end changes by adb
238 d_free(grd_curscreen);
242 // Palette functions follow.
244 static int last_r=0, last_g=0, last_b=0;
246 void gr_palette_clear()
248 SDL_Palette *palette;
249 SDL_Color colors[256];
252 palette = screen->format->palette;
254 if (palette == NULL) {
255 return; // Display is not palettised
258 ncolors = palette->ncolors;
259 memset(colors, 0, ncolors * sizeof(SDL_Color));
261 SDL_SetColors(screen, colors, 0, 256);
263 gr_palette_faded_out = 1;
267 void gr_palette_step_up( int r, int g, int b )
270 ubyte *p = gr_palette;
273 SDL_Palette *palette;
274 SDL_Color colors[256];
276 if (gr_palette_faded_out) return;
278 if ( (r==last_r) && (g==last_g) && (b==last_b) ) return;
284 palette = screen->format->palette;
286 if (palette == NULL) {
287 return; // Display is not palettised
290 for (i=0; i<256; i++) {
291 temp = (int)(*p++) + r + gr_palette_gamma;
293 else if (temp>63) temp=63;
294 colors[i].r = temp * 4;
295 temp = (int)(*p++) + g + gr_palette_gamma;
297 else if (temp>63) temp=63;
298 colors[i].g = temp * 4;
299 temp = (int)(*p++) + b + gr_palette_gamma;
301 else if (temp>63) temp=63;
302 colors[i].b = temp * 4;
305 SDL_SetColors(screen, colors, 0, 256);
308 //added on 980913 by adb to fix palette problems
309 // need a min without side effects...
311 static inline int min(int x, int y) { return x < y ? x : y; }
314 void gr_palette_load( ubyte *pal )
317 SDL_Palette *palette;
318 SDL_Color colors[256];
320 for (i=0; i<768; i++ ) {
321 gr_current_pal[i] = pal[i];
322 if (gr_current_pal[i] > 63) gr_current_pal[i] = 63;
325 palette = screen->format->palette;
327 if (palette == NULL) {
328 return; // Display is not palettised
331 for (i = 0, j = 0; j < 256; j++) {
332 //changed on 980913 by adb to fix palette problems
333 colors[j].r = (min(gr_current_pal[i++] + gr_palette_gamma, 63)) * 4;
334 colors[j].g = (min(gr_current_pal[i++] + gr_palette_gamma, 63)) * 4;
335 colors[j].b = (min(gr_current_pal[i++] + gr_palette_gamma, 63)) * 4;
338 SDL_SetColors(screen, colors, 0, 256);
340 gr_palette_faded_out = 0;
341 init_computed_colors();
346 int gr_palette_fade_out(ubyte *pal, int nsteps, int allow_keys)
350 fix fade_palette[768];
351 fix fade_palette_delta[768];
353 SDL_Palette *palette;
354 SDL_Color fade_colors[256];
356 if (gr_palette_faded_out) return 0;
358 palette = screen->format->palette;
359 if (palette == NULL) {
360 return -1; // Display is not palettised
363 if (pal==NULL) pal=gr_current_pal;
365 for (i=0; i<768; i++ ) {
366 gr_current_pal[i] = pal[i];
367 fade_palette[i] = i2f(pal[i]);
368 fade_palette_delta[i] = fade_palette[i] / nsteps;
370 for (j=0; j<nsteps; j++ ) {
371 for (i=0, k = 0; k<256; k++ ) {
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].r = c * 4;
380 fade_palette[i] -= fade_palette_delta[i];
381 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
382 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
383 c = f2i(fade_palette[i]);
385 fade_colors[k].g = c * 4;
388 fade_palette[i] -= fade_palette_delta[i];
389 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
390 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
391 c = f2i(fade_palette[i]);
393 fade_colors[k].b = c * 4;
397 SDL_SetColors(screen, fade_colors, 0, 256);
400 gr_palette_faded_out = 1;
406 int gr_palette_fade_in(ubyte *pal, int nsteps, int allow_keys)
408 int i, j, k, ncolors;
410 fix fade_palette[768];
411 fix fade_palette_delta[768];
413 SDL_Palette *palette;
414 SDL_Color fade_colors[256];
416 if (!gr_palette_faded_out) return 0;
418 palette = screen->format->palette;
420 if (palette == NULL) {
421 return -1; // Display is not palettised
424 ncolors = palette->ncolors;
426 for (i=0; i<768; i++ ) {
427 gr_current_pal[i] = pal[i];
429 fade_palette_delta[i] = i2f(pal[i]) / nsteps;
432 for (j=0; j<nsteps; j++ ) {
433 for (i=0, k = 0; k<256; k++ ) {
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].r = c * 4;
442 fade_palette[i] += fade_palette_delta[i];
443 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
444 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
445 c = f2i(fade_palette[i]);
447 fade_colors[k].g = c * 4;
450 fade_palette[i] += fade_palette_delta[i];
451 if (fade_palette[i] > i2f(pal[i] + gr_palette_gamma) )
452 fade_palette[i] = i2f(pal[i] + gr_palette_gamma);
453 c = f2i(fade_palette[i]);
455 fade_colors[k].b = c * 4;
459 SDL_SetColors(screen, fade_colors, 0, 256);
461 //added on 980913 by adb to fix palette problems
462 gr_palette_load(pal);
465 gr_palette_faded_out = 0;
471 void gr_palette_read(ubyte * pal)
473 SDL_Palette *palette;
476 palette = screen->format->palette;
478 if (palette == NULL) {
479 return; // Display is not palettised
482 for (i = 0, j=0; i < 256; i++) {
483 pal[j++] = palette->colors[i].r / 4;
484 pal[j++] = palette->colors[i].g / 4;
485 pal[j++] = palette->colors[i].b / 4;