video/ogl_gr.c

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