video/ogl_gr.c

   1 /*
   2  * $Source: /cvs/cvsroot/d2x/video/ogl_gr.c,v $
   3  * $Revision: 1.6 $
   4  * $Author: bradleyb $
   5  * $Date: 2001-10-18 23:59:23 $
   6  *
   7  * // OGL video functions. - Added 9/15/99 Matthew Mueller
   8  *
   9  * $Log: not supported by cvs2svn $
  10  * Revision 1.5  2001/10/12 00:18:40  bradleyb
  11  * Switched from Cygwin to mingw32 on MS boxes.  Vastly improved compilability.
  12  *
  13  * Revision 1.4  2001/01/29 13:47:52  bradleyb
  14  * Fixed build, some minor cleanups.
  15  *
  16  */
  17
  18 #ifdef HAVE_CONFIG_H
  19 #include <conf.h>
  20 #endif
  21
  22 #include <stdlib.h>
  23 #include <stdio.h>
  24 #include <string.h>
  25 #ifdef __WINDOWS__
  26 #include <windows.h>
  27 #endif
  28
  29 //#include <GL/gl.h>
  30 #include <unistd.h>
  31 #include <sys/types.h>
  32 #include <sys/stat.h>
  33 #include <fcntl.h>
  34 #include <errno.h>
  35
  36 #include "game.h"
  37 #include "text.h"
  38 #include "gr.h"
  39 #include "gamefont.h"
  40 #include "grdef.h"
  41 #include "palette.h"
  42 #include "u_mem.h"
  43 #include "error.h"
  44
  45 #include "inferno.h"
  46 #include "screens.h"
  47
  48 #include "strutil.h"
  49 #include "mono.h"
  50 #include "args.h"
  51 #include "key.h"
  52
  53 #include "gamefont.h"
  54
  55 #define DECLARE_VARS
  56 #include "ogl_init.h"
  57 #include <GL/glu.h>
  58
  59 int ogl_voodoohack=0;
  60
  61 int gr_installed = 0;
  62
  63
  64 void gr_palette_clear(); // Function prototype for gr_init;
  65 int gl_initialized=0;
  66 int gl_reticle=1;
  67
  68 int ogl_fullscreen=0;
  69 int gr_check_fullscreen(void){
  70         return ogl_fullscreen;
  71 }
  72 void gr_do_fullscreen(int f){
  73         if (ogl_voodoohack)
  74                 ogl_fullscreen=1;//force fullscreen mode on voodoos.
  75         else
  76                 ogl_fullscreen=f;
  77         if (gl_initialized){
  78                 ogl_do_fullscreen_internal();
  79         }
  80 }
  81 int gr_toggle_fullscreen(void){
  82         gr_do_fullscreen(!ogl_fullscreen);
  83         //      grd_curscreen->sc_mode=0;//hack to get it to reset screen mode
  84         return ogl_fullscreen;
  85 }
  86
  87
  88 void ogl_init_state(void){
  89         /* select clearing (background) color   */
  90         glClearColor(0.0, 0.0, 0.0, 0.0);
  91         glShadeModel(GL_SMOOTH);
  92
  93         /* initialize viewing values */
  94         glMatrixMode(GL_PROJECTION);
  95         glLoadIdentity();
  96         glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
  97         glScalef(1.0, -1.0, 1.0);
  98         glTranslatef(0.0, -1.0, 0.0);
  99         gr_palette_step_up(0,0,0);//in case its left over from in game
 100 }
 101
 102 int last_screen_mode=-1;
 103 void ogl_set_screen_mode(void){
 104         if (last_screen_mode==Screen_mode)
 105                 return;
 106         OGL_VIEWPORT(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h);
 107 //      OGL_VIEWPORT(grd_curcanv->cv_bitmap.bm_x,grd_curcanv->cv_bitmap.bm_y,grd_curcanv->cv_bitmap.bm_w,grd_curcanv->cv_bitmap.bm_h);
 108         if (Screen_mode==SCREEN_GAME){
 109                 glDrawBuffer(GL_BACK);
 110         }else{
 111                 glClearColor(0.0, 0.0, 0.0, 0.0);
 112                 glDrawBuffer(GL_FRONT);
 113                 glClear(GL_COLOR_BUFFER_BIT);
 114                 glMatrixMode(GL_PROJECTION);
 115                 glLoadIdentity();//clear matrix
 116                 glOrtho(0.0, 1.0, 0.0, 1.0, -1.0, 1.0);
 117                 glMatrixMode(GL_MODELVIEW);
 118                 glLoadIdentity();//clear matrix
 119                 glEnable(GL_BLEND);
 120                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 121         }
 122         last_screen_mode=Screen_mode;
 123 }
 124 void gr_update()
 125 {
 126         if (gl_initialized){
 127
 128                 if(Screen_mode != SCREEN_GAME){
 129                         glFlush();
 130                 }
 131         }
 132 }
 133
 134 const char *gl_vendor,*gl_renderer,*gl_version,*gl_extensions;
 135 void ogl_get_verinfo(void){
 136         int t;
 137         gl_vendor=glGetString(GL_VENDOR);
 138         gl_renderer=glGetString(GL_RENDERER);
 139         gl_version=glGetString(GL_VERSION);
 140         gl_extensions=glGetString(GL_EXTENSIONS);
 141
 142         printf("gl vendor:%s renderer:%s version:%s extensions:%s\n",gl_vendor,gl_renderer,gl_version,gl_extensions);
 143
 144         ogl_intensity4_ok=1;ogl_luminance4_alpha4_ok=1;ogl_rgba2_ok=1;
 145
 146         //add driver specific hacks here.  whee.
 147         if (stricmp(gl_renderer,"Mesa NVIDIA RIVA 1.0\n")==0 && stricmp(gl_version,"1.2 Mesa 3.0")==0){
 148                 ogl_intensity4_ok=0;//ignores alpha, always black background instead of transparent.
 149                 ogl_readpixels_ok=0;//either just returns all black, or kills the X server entirely
 150         }
 151
 152         //allow overriding of stuff.
 153         if ((t=FindArg("-gl_intensity4_ok"))){
 154                 ogl_intensity4_ok=atoi(Args[t+1]);
 155         }
 156         if ((t=FindArg("-gl_luminance4_alpha4_ok"))){
 157                 ogl_luminance4_alpha4_ok=atoi(Args[t+1]);
 158         }
 159         if ((t=FindArg("-gl_rgba2_ok"))){
 160                 ogl_rgba2_ok=atoi(Args[t+1]);
 161         }
 162         if ((t=FindArg("-gl_readpixels_ok"))){
 163                 ogl_readpixels_ok=atoi(Args[t+1]);
 164         }
 165
 166         printf("gl_intensity4:%i gl_luminance4_alpha4:%i gl_rgba2:%i gl_readpixels:%i\n",ogl_intensity4_ok,ogl_luminance4_alpha4_ok,ogl_rgba2_ok,ogl_readpixels_ok);
 167 }
 168
 169 int gr_set_mode(u_int32_t mode)
 170 {
 171         unsigned int w,h;
 172
 173 #ifdef NOGRAPH
 174 return 0;
 175 #endif
 176 //      mode=0;
 177         if (mode<=0)
 178                 return 0;
 179
 180         w=SM_W(mode);
 181         h=SM_H(mode);
 182
 183         //if (screen != NULL) gr_palette_clear();
 184
 185 //      ogl_init_state();
 186
 187         memset( grd_curscreen, 0, sizeof(grs_screen));
 188         grd_curscreen->sc_mode = mode;
 189         grd_curscreen->sc_w = w;
 190         grd_curscreen->sc_h = h;
 191         grd_curscreen->sc_aspect = fixdiv(grd_curscreen->sc_w*3,grd_curscreen->sc_h*4);
 192         grd_curscreen->sc_canvas.cv_bitmap.bm_x = 0;
 193         grd_curscreen->sc_canvas.cv_bitmap.bm_y = 0;
 194         grd_curscreen->sc_canvas.cv_bitmap.bm_w = w;
 195         grd_curscreen->sc_canvas.cv_bitmap.bm_h = h;
 196         //grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = screen->pitch;
 197         grd_curscreen->sc_canvas.cv_bitmap.bm_rowsize = w;
 198         grd_curscreen->sc_canvas.cv_bitmap.bm_type = BM_OGL;
 199         //grd_curscreen->sc_canvas.cv_bitmap.bm_data = (unsigned char *)screen->pixels;
 200         grd_curscreen->sc_canvas.cv_bitmap.bm_data = realloc(grd_curscreen->sc_canvas.cv_bitmap.bm_data,w*h);
 201         gr_set_current_canvas(NULL);
 202         //gr_enable_default_palette_loading();
 203
 204         ogl_init_window(w,h);//platform specific code
 205
 206         ogl_get_verinfo();
 207
 208         OGL_VIEWPORT(0,0,w,h);
 209
 210         ogl_set_screen_mode();
 211
 212         //gamefont_choose_game_font(w,h);
 213
 214         return 0;
 215 }
 216
 217 #define GLstrcmptestr(a,b) if (stricmp(a,#b)==0 || stricmp(a,"GL_" #b)==0)return GL_ ## b;
 218 int ogl_atotexfilti(char *a,int min){
 219         GLstrcmptestr(a,NEAREST);
 220         GLstrcmptestr(a,LINEAR);
 221         if (min){//mipmaps are valid only for the min filter
 222                 GLstrcmptestr(a,NEAREST_MIPMAP_NEAREST);
 223                 GLstrcmptestr(a,NEAREST_MIPMAP_LINEAR);
 224                 GLstrcmptestr(a,LINEAR_MIPMAP_NEAREST);
 225                 GLstrcmptestr(a,LINEAR_MIPMAP_LINEAR);
 226         }
 227         Error("unknown/invalid texture filter %s\n",a);
 228 //      return GL_NEAREST;
 229 }
 230 int ogl_testneedmipmaps(int i){
 231         switch (i){
 232                 case GL_NEAREST:
 233                 case GL_LINEAR:
 234                         return 0;
 235                 case GL_NEAREST_MIPMAP_NEAREST:
 236                 case GL_NEAREST_MIPMAP_LINEAR:
 237                 case GL_LINEAR_MIPMAP_NEAREST:
 238                 case GL_LINEAR_MIPMAP_LINEAR:
 239                         return 1;
 240         }
 241         Error("unknown texture filter %x\n",i);
 242 //      return -1;
 243 }
 244 #ifdef OGL_RUNTIME_LOAD
 245 #if defined(__WINDOWS__) || defined(__MINGW32__)
 246 char *OglLibPath="opengl32.dll";
 247 #else
 248 char *OglLibPath="libGL.so";
 249 #endif
 250
 251 int ogl_rt_loaded=0;
 252 int ogl_init_load_library(void)
 253 {
 254         int retcode=0;
 255         if (!ogl_rt_loaded){
 256                 int t;
 257                 if ((t=FindArg("-gl_library")))
 258                         OglLibPath=Args[t+1];
 259
 260                 retcode = OpenGL_LoadLibrary(true);
 261                 if(retcode)
 262                 {
 263                         mprintf((0,"Opengl loaded ok\n"));
 264
 265                         if(!glEnd)
 266                         {
 267                                 Error("Opengl: Functions not imported\n");
 268                         }
 269                 }else{
 270                         Error("Opengl: error loading %s\n",OglLibPath);
 271                 }
 272                 ogl_rt_loaded=1;
 273         }
 274         return retcode;
 275 }
 276 #endif
 277
 278 int gr_init()
 279 {
 280  int mode = SM(640,480);
 281  int retcode,t,glt=0;
 282         // Only do this function once!
 283         if (gr_installed==1)
 284                 return -1;
 285
 286
 287 #ifdef OGL_RUNTIME_LOAD
 288         ogl_init_load_library();
 289 #endif
 290
 291 #ifdef GR_SUPPORTS_FULLSCREEN_TOGGLE
 292         if (FindArg("-gl_voodoo")){
 293                 ogl_voodoohack=1;
 294                 gr_toggle_fullscreen();
 295         }
 296         if (FindArg("-fullscreen"))
 297                 gr_toggle_fullscreen();
 298 #endif
 299         if ((glt=FindArg("-gl_alttexmerge")))
 300                 ogl_alttexmerge=1;
 301         if ((t=FindArg("-gl_stdtexmerge")))
 302                 if (t>=glt)//allow overriding of earlier args
 303                         ogl_alttexmerge=0;
 304
 305         if ((glt=FindArg("-gl_16bittextures")))
 306                 ogl_rgba_format=GL_RGB5_A1;
 307
 308         if ((glt=FindArg("-gl_mipmap"))){
 309                 GL_texmagfilt=GL_LINEAR;
 310                 GL_texminfilt=GL_LINEAR_MIPMAP_NEAREST;
 311         }
 312         if ((t=FindArg("-gl_simple"))){
 313                 if (t>=glt){//allow overriding of earlier args
 314                         glt=t;
 315                         GL_texmagfilt=GL_NEAREST;
 316                         GL_texminfilt=GL_NEAREST;
 317                 }
 318         }
 319         if ((t=FindArg("-gl_texmagfilt")) || (t=FindArg("-gl_texmagfilter"))){
 320                 if (t>=glt)//allow overriding of earlier args
 321                         GL_texmagfilt=ogl_atotexfilti(Args[t+1],0);
 322         }
 323         if ((t=FindArg("-gl_texminfilt")) || (t=FindArg("-gl_texminfilter"))){
 324                 if (t>=glt)//allow overriding of earlier args
 325                         GL_texminfilt=ogl_atotexfilti(Args[t+1],1);
 326         }
 327         GL_needmipmaps=ogl_testneedmipmaps(GL_texminfilt);
 328         mprintf((0,"gr_init: texmagfilt:%x texminfilt:%x needmipmaps=%i\n",GL_texmagfilt,GL_texminfilt,GL_needmipmaps));
 329
 330         if ((t=FindArg("-gl_vidmem"))){
 331                 ogl_mem_target=atoi(Args[t+1])*1024*1024;
 332         }
 333         if ((t=FindArg("-gl_reticle"))){
 334                 gl_reticle=atoi(Args[t+1]);
 335         }
 336         //printf("ogl_mem_target=%i\n",ogl_mem_target);
 337
 338         ogl_init();//platform specific initialization
 339
 340         ogl_init_texture_list_internal();
 341
 342         MALLOC( grd_curscreen,grs_screen,1 );
 343         memset( grd_curscreen, 0, sizeof(grs_screen));
 344         grd_curscreen->sc_canvas.cv_bitmap.bm_data = NULL;
 345
 346         // Set the mode.
 347         if ((retcode=gr_set_mode(mode)))
 348         {
 349                 return retcode;
 350         }
 351         grd_curscreen->sc_canvas.cv_color = 0;
 352         grd_curscreen->sc_canvas.cv_drawmode = 0;
 353         grd_curscreen->sc_canvas.cv_font = NULL;
 354         grd_curscreen->sc_canvas.cv_font_fg_color = 0;
 355         grd_curscreen->sc_canvas.cv_font_bg_color = 0;
 356         gr_set_current_canvas( &grd_curscreen->sc_canvas );
 357
 358         gr_installed = 1;
 359
 360         atexit(gr_close);
 361
 362         return 0;
 363 }
 364
 365 void gr_close()
 366 {
 367 //      mprintf((0,"ogl init: %s %s %s - %s\n",glGetString(GL_VENDOR),glGetString(GL_RENDERER),glGetString(GL_VERSION),glGetString,(GL_EXTENSIONS)));
 368
 369         ogl_close();//platform specific code
 370         if (grd_curscreen){
 371                 if (grd_curscreen->sc_canvas.cv_bitmap.bm_data)
 372                         d_free(grd_curscreen->sc_canvas.cv_bitmap.bm_data);
 373                 d_free(grd_curscreen);
 374         }
 375 #ifdef OGL_RUNTIME_LOAD
 376         if (ogl_rt_loaded)
 377                 OpenGL_LoadLibrary(false);
 378 #endif
 379 }
 380 extern int r_upixelc;
 381 void ogl_upixelc(int x, int y, int c){
 382         r_upixelc++;
 383 //      printf("gr_upixelc(%i,%i,%i)%i\n",x,y,c,Function_mode==FMODE_GAME);
 384 //      if(Function_mode != FMODE_GAME){
 385 //              grd_curcanv->cv_bitmap.bm_data[y*grd_curscreen->sc_canvas.cv_bitmap.bm_w+x]=c;
 386 //      }else{
 387                 OGL_DISABLE(TEXTURE_2D);
 388                 glPointSize(1.0);
 389                 glBegin(GL_POINTS);
 390 //              glBegin(GL_LINES);
 391 //      ogl_pal=gr_current_pal;
 392                 glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
 393 //      ogl_pal=gr_palette;
 394                 glVertex2f((x+grd_curcanv->cv_bitmap.bm_x)/(float)last_width,1.0-(y+grd_curcanv->cv_bitmap.bm_y)/(float)last_height);
 395 //              glVertex2f(x/((float)last_width+1),1.0-y/((float)last_height+1));
 396                 glEnd();
 397 //      }
 398 }
 399 void ogl_urect(int left,int top,int right,int bot){
 400         GLfloat xo,yo,xf,yf;
 401         int c=COLOR;
 402
 403         xo=(left+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
 404         xf=(right+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
 405         yo=1.0-(top+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
 406         yf=1.0-(bot+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
 407
 408         OGL_DISABLE(TEXTURE_2D);
 409         glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
 410         glBegin(GL_QUADS);
 411         glVertex2f(xo,yo);
 412         glVertex2f(xo,yf);
 413         glVertex2f(xf,yf);
 414         glVertex2f(xf,yo);
 415         glEnd();
 416 }
 417 void ogl_ulinec(int left,int top,int right,int bot,int c){
 418         GLfloat xo,yo,xf,yf;
 419
 420         xo=(left+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
 421         xf=(right+grd_curcanv->cv_bitmap.bm_x)/(float)last_width;
 422         yo=1.0-(top+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
 423         yf=1.0-(bot+grd_curcanv->cv_bitmap.bm_y)/(float)last_height;
 424
 425         OGL_DISABLE(TEXTURE_2D);
 426         glColor3f(CPAL2Tr(c),CPAL2Tg(c),CPAL2Tb(c));
 427         glBegin(GL_LINES);
 428         glVertex2f(xo,yo);
 429         glVertex2f(xf,yf);
 430         glEnd();
 431 }
 432
 433
 434 GLfloat last_r=0, last_g=0, last_b=0;
 435 int do_pal_step=0;
 436 void ogl_do_palfx(void){
 437 //      GLfloat r,g,b,a;
 438         OGL_DISABLE(TEXTURE_2D);
 439         if (gr_palette_faded_out){
 440 /*              glEnable(GL_BLEND);
 441                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);*/
 442                 glColor3f(0,0,0);
 443 //              r=g=b=0.0;a=1.0;
 444         }else{
 445                 if (do_pal_step){
 446                         //glBlendFunc(GL_SRC_COLOR, GL_DST_COLOR);
 447                         glEnable(GL_BLEND);
 448                         glBlendFunc(GL_ONE,GL_ONE);
 449                         glColor3f(last_r,last_g,last_b);
 450 //                      r=f2fl(last_r);g=f2fl(last_g);b=f2fl(last_b);a=0.5;
 451                 }else
 452                         return;
 453         }
 454
 455
 456         glBegin(GL_QUADS);
 457         glVertex2f(0,0);
 458         glVertex2f(0,1);
 459         glVertex2f(1,1);
 460         glVertex2f(1,0);
 461         glEnd();
 462
 463         glEnable(GL_BLEND);
 464         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 465 }
 466
 467 void gr_palette_clear()
 468 {
 469         gr_palette_faded_out=1;
 470 }
 471
 472
 473 void gr_palette_step_up( int r, int g, int b )
 474 {
 475         if (gr_palette_faded_out) return;
 476
 477 //      if ( (r==last_r) && (g==last_g) && (b==last_b) ) return;
 478
 479 /*      last_r = r/63.0;
 480         last_g = g/63.0;
 481         last_b = b/63.0;
 482         do_pal_step=(r || g || b);*/
 483
 484         last_r = (r+gr_palette_gamma)/63.0;
 485         last_g = (g+gr_palette_gamma)/63.0;
 486         last_b = (b+gr_palette_gamma)/63.0;
 487
 488         do_pal_step=(r || g || b || gr_palette_gamma);
 489
 490 }
 491
 492 //added on 980913 by adb to fix palette problems
 493 // need a min without side effects...
 494 #undef min
 495 static inline int min(int x, int y) { return x < y ? x : y; }
 496 //end changes by adb
 497
 498 void gr_palette_load( ubyte *pal )
 499 {
 500  int i;//, j;
 501
 502  for (i=0; i<768; i++ ) {
 503      gr_current_pal[i] = pal[i];
 504      if (gr_current_pal[i] > 63) gr_current_pal[i] = 63;
 505  }
 506  //palette = screen->format->palette;
 507
 508  gr_palette_faded_out=0;
 509
 510  init_computed_colors();
 511 }
 512
 513
 514
 515 int gr_palette_fade_out(ubyte *pal, int nsteps, int allow_keys)
 516 {
 517         gr_palette_faded_out=1;
 518         return 0;
 519 }
 520
 521
 522
 523 int gr_palette_fade_in(ubyte *pal, int nsteps, int allow_keys)
 524 {
 525         gr_palette_faded_out=0;
 526         return 0;
 527 }
 528
 529
 530
 531 void gr_palette_read(ubyte * pal)
 532 {
 533         int i;
 534         for (i=0; i<768; i++ ) {
 535                 pal[i]=gr_current_pal[i];
 536                 if (pal[i] > 63) pal[i] = 63;
 537         }
 538 }
 539
 540 //writes out an uncompressed RGB .tga file
 541 //if we got really spiffy, we could optionally link in libpng or something, and use that.
 542 void write_bmp(char *savename,int w,int h,unsigned char *buf){
 543         int f;
 544 #if defined(__WINDOWS__) || defined (__MINGW32__)
 545         f=open(savename,O_CREAT|O_EXCL|O_WRONLY,S_IRUSR|S_IWUSR);
 546 #else
 547         f=open(savename,O_CREAT|O_EXCL|O_WRONLY,S_IRUSR|S_IWUSR|S_IRGRP|S_IROTH);
 548 #endif
 549         if (f>=0){
 550                 GLubyte    targaMagic[12] = { 0, //no identification field
 551                          0,//no colormap
 552                          2,//RGB image (well, BGR, actually)
 553                          0, 0, 0, 0, 0, 0, 0, 0, 0 };//no colormap or image origin stuff.
 554                 GLubyte blah;
 555                 int r;
 556                 GLubyte *s;
 557                 int x,y;
 558
 559                 //write .TGA header.
 560                 write (f,targaMagic,sizeof(targaMagic));
 561                 blah=w%256;write (f,&blah,1);//w, low
 562                 blah=w/256;write (f,&blah,1);//w, high
 563                 blah=h%256;write (f,&blah,1);//h, low
 564                 blah=h/256;write (f,&blah,1);//h, high
 565                 blah=24;write (f,&blah,1);//24 bpp
 566                 blah=0;write (f,&blah,1);//no attribute bits, origin is lowerleft, no interleave
 567
 568                 s=buf;
 569                 for (y=0;y<h;y++){//TGAs use BGR ordering of data.
 570                         for (x=0;x<w;x++){
 571                                 blah=s[0];
 572                                 s[0]=s[2];
 573                                 s[2]=blah;
 574                                 s+=3;
 575                         }
 576                 }
 577                 x=0;y=w*h*3;
 578                 while (x<y){
 579                         r=write(f,buf+x,y);
 580                         if (r<=0){
 581                                 mprintf((0,"screenshot error, couldn't write to %s (err %i)\n",savename,errno));
 582                                 break;
 583                         }
 584                         x+=r;y-=r;
 585                 }
 586                 close(f);
 587         }else{
 588                 mprintf((0,"screenshot error, couldn't open %s (err %i)\n",savename,errno));
 589         }
 590 }
 591 void save_screen_shot(int automap_flag)
 592 {
 593 //      fix t1;
 594         char message[100];
 595         static int savenum=0;
 596         char savename[13];
 597         unsigned char *buf;
 598
 599         if (!ogl_readpixels_ok){
 600                 if (!automap_flag)
 601 //                      hud_message(MSGC_GAME_FEEDBACK,"glReadPixels not supported on your configuration");
 602                 return;
 603         }
 604
 605         stop_time();
 606
 607 //added/changed on 10/31/98 by Victor Rachels to fix overwrite each new game
 608         if ( savenum == 9999 ) savenum = 0;
 609         sprintf(savename,"scrn%04d.tga",savenum++);
 610
 611         while(!access(savename,0))
 612         {
 613                 if ( savenum == 9999 ) savenum = 0;
 614                 sprintf(savename,"scrn%04d.tga",savenum++);
 615         }
 616         sprintf( message, "%s '%s'", TXT_DUMPING_SCREEN, savename );
 617 //end this section addition/change - Victor Rachels
 618
 619         if (automap_flag) {
 620 //      save_font = grd_curcanv->cv_font;
 621 //      gr_set_curfont(GAME_FONT);
 622 //      gr_set_fontcolor(gr_find_closest_color_current(0,31,0),-1);
 623 //      gr_get_string_size(message,&w,&h,&aw);
 624 //              modex_print_message(32, 2, message);
 625         } else {
 626 //              hud_message(MSGC_GAME_FEEDBACK,message);
 627         }
 628
 629         buf = d_malloc(grd_curscreen->sc_w*grd_curscreen->sc_h*3);
 630         glReadBuffer(GL_FRONT);
 631         glReadPixels(0,0,grd_curscreen->sc_w,grd_curscreen->sc_h,GL_RGB,GL_UNSIGNED_BYTE,buf);
 632         write_bmp(savename,grd_curscreen->sc_w,grd_curscreen->sc_h,buf);
 633         d_free(buf);
 634
 635         key_flush();
 636         start_time();
 637 }