Games/Quake/r_misc.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // r_misc.c
  21
  22 #include "quakedef.h"
  23 #include "r_local.h"
  24
  25
  26 /*
  27 ===============
  28 R_CheckVariables
  29 ===============
  30 */
  31 void R_CheckVariables (void)
  32 {
  33         static float    oldbright;
  34
  35         if (r_fullbright.value != oldbright)
  36         {
  37                 oldbright = r_fullbright.value;
  38                 D_FlushCaches ();       // so all lighting changes
  39         }
  40 }
  41
  42
  43 /*
  44 ============
  45 Show
  46
  47 Debugging use
  48 ============
  49 */
  50 void Show (void)
  51 {
  52         vrect_t vr;
  53
  54         vr.x = vr.y = 0;
  55         vr.width = vid.width;
  56         vr.height = vid.height;
  57         vr.pnext = NULL;
  58         VID_Update (&vr);
  59 }
  60
  61
  62 /*
  63 ====================
  64 R_TimeRefresh_f
  65
  66 For program optimization
  67 ====================
  68 */
  69 void R_TimeRefresh_f (void)
  70 {
  71         int                     i;
  72         float           start, stop, time;
  73         int                     startangle;
  74         vrect_t         vr;
  75
  76         startangle = r_refdef.viewangles[1];
  77
  78         start = Sys_FloatTime ();
  79         for (i=0 ; i<128 ; i++)
  80         {
  81                 r_refdef.viewangles[1] = i/128.0*360.0;
  82
  83                 VID_LockBuffer ();
  84
  85                 R_RenderView ();
  86
  87                 VID_UnlockBuffer ();
  88
  89                 vr.x = r_refdef.vrect.x;
  90                 vr.y = r_refdef.vrect.y;
  91                 vr.width = r_refdef.vrect.width;
  92                 vr.height = r_refdef.vrect.height;
  93                 vr.pnext = NULL;
  94                 VID_Update (&vr);
  95         }
  96         stop = Sys_FloatTime ();
  97         time = stop-start;
  98         Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
  99
 100         r_refdef.viewangles[1] = startangle;
 101 }
 102
 103
 104 /*
 105 ================
 106 R_LineGraph
 107
 108 Only called by R_DisplayTime
 109 ================
 110 */
 111 void R_LineGraph (int x, int y, int h)
 112 {
 113         int             i;
 114         byte    *dest;
 115         int             s;
 116
 117 // FIXME: should be disabled on no-buffer adapters, or should be in the driver
 118
 119         x += r_refdef.vrect.x;
 120         y += r_refdef.vrect.y;
 121
 122         dest = vid.buffer + vid.rowbytes*y + x;
 123
 124         s = r_graphheight.value;
 125
 126         if (h>s)
 127                 h = s;
 128
 129         for (i=0 ; i<h ; i++, dest -= vid.rowbytes*2)
 130         {
 131                 dest[0] = 0xff;
 132                 *(dest-vid.rowbytes) = 0x30;
 133         }
 134         for ( ; i<s ; i++, dest -= vid.rowbytes*2)
 135         {
 136                 dest[0] = 0x30;
 137                 *(dest-vid.rowbytes) = 0x30;
 138         }
 139 }
 140
 141 /*
 142 ==============
 143 R_TimeGraph
 144
 145 Performance monitoring tool
 146 ==============
 147 */
 148 #define MAX_TIMINGS             100
 149 extern float mouse_x, mouse_y;
 150 void R_TimeGraph (void)
 151 {
 152         static  int             timex;
 153         int             a;
 154         float   r_time2;
 155         static byte     r_timings[MAX_TIMINGS];
 156         int             x;
 157
 158         r_time2 = Sys_FloatTime ();
 159
 160         a = (r_time2-r_time1)/0.01;
 161 //a = fabs(mouse_y * 0.05);
 162 //a = (int)((r_refdef.vieworg[2] + 1024)/1)%(int)r_graphheight.value;
 163 //a = fabs(velocity[0])/20;
 164 //a = ((int)fabs(origin[0])/8)%20;
 165 //a = (cl.idealpitch + 30)/5;
 166         r_timings[timex] = a;
 167         a = timex;
 168
 169         if (r_refdef.vrect.width <= MAX_TIMINGS)
 170                 x = r_refdef.vrect.width-1;
 171         else
 172                 x = r_refdef.vrect.width -
 173                                 (r_refdef.vrect.width - MAX_TIMINGS)/2;
 174         do
 175         {
 176                 R_LineGraph (x, r_refdef.vrect.height-2, r_timings[a]);
 177                 if (x==0)
 178                         break;          // screen too small to hold entire thing
 179                 x--;
 180                 a--;
 181                 if (a == -1)
 182                         a = MAX_TIMINGS-1;
 183         } while (a != timex);
 184
 185         timex = (timex+1)%MAX_TIMINGS;
 186 }
 187
 188
 189 /*
 190 =============
 191 R_PrintTimes
 192 =============
 193 */
 194 void R_PrintTimes (void)
 195 {
 196         float   r_time2;
 197         float           ms;
 198
 199         r_time2 = Sys_FloatTime ();
 200
 201         ms = 1000* (r_time2 - r_time1);
 202
 203         Con_Printf ("%5.1f ms %3i/%3i/%3i poly %3i surf\n",
 204                                 ms, c_faceclip, r_polycount, r_drawnpolycount, c_surf);
 205         c_surf = 0;
 206 }
 207
 208
 209 /*
 210 =============
 211 R_PrintDSpeeds
 212 =============
 213 */
 214 void R_PrintDSpeeds (void)
 215 {
 216         float   ms, dp_time, r_time2, rw_time, db_time, se_time, de_time, dv_time;
 217
 218         r_time2 = Sys_FloatTime ();
 219
 220         dp_time = (dp_time2 - dp_time1) * 1000;
 221         rw_time = (rw_time2 - rw_time1) * 1000;
 222         db_time = (db_time2 - db_time1) * 1000;
 223         se_time = (se_time2 - se_time1) * 1000;
 224         de_time = (de_time2 - de_time1) * 1000;
 225         dv_time = (dv_time2 - dv_time1) * 1000;
 226         ms = (r_time2 - r_time1) * 1000;
 227
 228         Con_Printf ("%3i %4.1fp %3iw %4.1fb %3is %4.1fe %4.1fv\n",
 229                                 (int)ms, dp_time, (int)rw_time, db_time, (int)se_time, de_time,
 230                                 dv_time);
 231 }
 232
 233
 234 /*
 235 =============
 236 R_PrintAliasStats
 237 =============
 238 */
 239 void R_PrintAliasStats (void)
 240 {
 241         Con_Printf ("%3i polygon model drawn\n", r_amodels_drawn);
 242 }
 243
 244
 245 void WarpPalette (void)
 246 {
 247         int             i,j;
 248         byte    newpalette[768];
 249         int             basecolor[3];
 250
 251         basecolor[0] = 130;
 252         basecolor[1] = 80;
 253         basecolor[2] = 50;
 254
 255 // pull the colors halfway to bright brown
 256         for (i=0 ; i<256 ; i++)
 257         {
 258                 for (j=0 ; j<3 ; j++)
 259                 {
 260                         newpalette[i*3+j] = (host_basepal[i*3+j] + basecolor[j])/2;
 261                 }
 262         }
 263
 264         VID_ShiftPalette (newpalette);
 265 }
 266
 267
 268 /*
 269 ===================
 270 R_TransformFrustum
 271 ===================
 272 */
 273 void R_TransformFrustum (void)
 274 {
 275         int             i;
 276         vec3_t  v, v2;
 277
 278         for (i=0 ; i<4 ; i++)
 279         {
 280                 v[0] = screenedge[i].normal[2];
 281                 v[1] = -screenedge[i].normal[0];
 282                 v[2] = screenedge[i].normal[1];
 283
 284                 v2[0] = v[1]*vright[0] + v[2]*vup[0] + v[0]*vpn[0];
 285                 v2[1] = v[1]*vright[1] + v[2]*vup[1] + v[0]*vpn[1];
 286                 v2[2] = v[1]*vright[2] + v[2]*vup[2] + v[0]*vpn[2];
 287
 288                 VectorCopy (v2, view_clipplanes[i].normal);
 289
 290                 view_clipplanes[i].dist = DotProduct (modelorg, v2);
 291         }
 292 }
 293
 294
 295 #if     !id386
 296
 297 /*
 298 ================
 299 TransformVector
 300 ================
 301 */
 302 void TransformVector (vec3_t in, vec3_t out)
 303 {
 304         out[0] = DotProduct(in,vright);
 305         out[1] = DotProduct(in,vup);
 306         out[2] = DotProduct(in,vpn);
 307 }
 308
 309 #endif
 310
 311
 312 /*
 313 ================
 314 R_TransformPlane
 315 ================
 316 */
 317 void R_TransformPlane (mplane_t *p, float *normal, float *dist)
 318 {
 319         float   d;
 320
 321         d = DotProduct (r_origin, p->normal);
 322         *dist = p->dist - d;
 323 // TODO: when we have rotating entities, this will need to use the view matrix
 324         TransformVector (p->normal, normal);
 325 }
 326
 327
 328 /*
 329 ===============
 330 R_SetUpFrustumIndexes
 331 ===============
 332 */
 333 void R_SetUpFrustumIndexes (void)
 334 {
 335         int             i, j, *pindex;
 336
 337         pindex = r_frustum_indexes;
 338
 339         for (i=0 ; i<4 ; i++)
 340         {
 341                 for (j=0 ; j<3 ; j++)
 342                 {
 343                         if (view_clipplanes[i].normal[j] < 0)
 344                         {
 345                                 pindex[j] = j;
 346                                 pindex[j+3] = j+3;
 347                         }
 348                         else
 349                         {
 350                                 pindex[j] = j+3;
 351                                 pindex[j+3] = j;
 352                         }
 353                 }
 354
 355         // FIXME: do just once at start
 356                 pfrustum_indexes[i] = pindex;
 357                 pindex += 6;
 358         }
 359 }
 360
 361
 362 /*
 363 ===============
 364 R_SetupFrame
 365 ===============
 366 */
 367 void R_SetupFrame (void)
 368 {
 369         int                             edgecount;
 370         vrect_t                 vrect;
 371         float                   w, h;
 372
 373 // don't allow cheats in multiplayer
 374         if (cl.maxclients > 1)
 375         {
 376                 Cvar_Set ("r_draworder", "0");
 377                 Cvar_Set ("r_fullbright", "0");
 378                 Cvar_Set ("r_ambient", "0");
 379                 Cvar_Set ("r_drawflat", "0");
 380         }
 381
 382         if (r_numsurfs.value)
 383         {
 384                 if ((surface_p - surfaces) > r_maxsurfsseen)
 385                         r_maxsurfsseen = surface_p - surfaces;
 386
 387                 Con_Printf ("Used %d of %d surfs; %d max\n", surface_p - surfaces,
 388                                 surf_max - surfaces, r_maxsurfsseen);
 389         }
 390
 391         if (r_numedges.value)
 392         {
 393                 edgecount = edge_p - r_edges;
 394
 395                 if (edgecount > r_maxedgesseen)
 396                         r_maxedgesseen = edgecount;
 397
 398                 Con_Printf ("Used %d of %d edges; %d max\n", edgecount,
 399                                 r_numallocatededges, r_maxedgesseen);
 400         }
 401
 402         r_refdef.ambientlight = r_ambient.value;
 403
 404         if (r_refdef.ambientlight < 0)
 405                 r_refdef.ambientlight = 0;
 406
 407         if (!sv.active)
 408                 r_draworder.value = 0;  // don't let cheaters look behind walls
 409
 410         R_CheckVariables ();
 411
 412         R_AnimateLight ();
 413
 414         r_framecount++;
 415
 416         numbtofpolys = 0;
 417
 418 // debugging
 419 #if 0
 420 r_refdef.vieworg[0]=  80;
 421 r_refdef.vieworg[1]=      64;
 422 r_refdef.vieworg[2]=      40;
 423 r_refdef.viewangles[0]=    0;
 424 r_refdef.viewangles[1]=    46.763641357;
 425 r_refdef.viewangles[2]=    0;
 426 #endif
 427
 428 // build the transformation matrix for the given view angles
 429         VectorCopy (r_refdef.vieworg, modelorg);
 430         VectorCopy (r_refdef.vieworg, r_origin);
 431
 432         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 433
 434 // current viewleaf
 435         r_oldviewleaf = r_viewleaf;
 436         r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
 437
 438         r_dowarpold = r_dowarp;
 439         r_dowarp = r_waterwarp.value && (r_viewleaf->contents <= CONTENTS_WATER);
 440
 441         if ((r_dowarp != r_dowarpold) || r_viewchanged || lcd_x.value)
 442         {
 443                 if (r_dowarp)
 444                 {
 445                         if ((vid.width <= vid.maxwarpwidth) &&
 446                                 (vid.height <= vid.maxwarpheight))
 447                         {
 448                                 vrect.x = 0;
 449                                 vrect.y = 0;
 450                                 vrect.width = vid.width;
 451                                 vrect.height = vid.height;
 452
 453                                 R_ViewChanged (&vrect, sb_lines, vid.aspect);
 454                         }
 455                         else
 456                         {
 457                                 w = vid.width;
 458                                 h = vid.height;
 459
 460                                 if (w > vid.maxwarpwidth)
 461                                 {
 462                                         h *= (float)vid.maxwarpwidth / w;
 463                                         w = vid.maxwarpwidth;
 464                                 }
 465
 466                                 if (h > vid.maxwarpheight)
 467                                 {
 468                                         h = vid.maxwarpheight;
 469                                         w *= (float)vid.maxwarpheight / h;
 470                                 }
 471
 472                                 vrect.x = 0;
 473                                 vrect.y = 0;
 474                                 vrect.width = (int)w;
 475                                 vrect.height = (int)h;
 476
 477                                 R_ViewChanged (&vrect,
 478                                                            (int)((float)sb_lines * (h/(float)vid.height)),
 479                                                            vid.aspect * (h / w) *
 480                                                                  ((float)vid.width / (float)vid.height));
 481                         }
 482                 }
 483                 else
 484                 {
 485                         vrect.x = 0;
 486                         vrect.y = 0;
 487                         vrect.width = vid.width;
 488                         vrect.height = vid.height;
 489
 490                         R_ViewChanged (&vrect, sb_lines, vid.aspect);
 491                 }
 492
 493                 r_viewchanged = false;
 494         }
 495
 496 // start off with just the four screen edge clip planes
 497         R_TransformFrustum ();
 498
 499 // save base values
 500         VectorCopy (vpn, base_vpn);
 501         VectorCopy (vright, base_vright);
 502         VectorCopy (vup, base_vup);
 503         VectorCopy (modelorg, base_modelorg);
 504
 505         R_SetSkyFrame ();
 506
 507         R_SetUpFrustumIndexes ();
 508
 509         r_cache_thrash = false;
 510
 511 // clear frame counts
 512         c_faceclip = 0;
 513         d_spanpixcount = 0;
 514         r_polycount = 0;
 515         r_drawnpolycount = 0;
 516         r_wholepolycount = 0;
 517         r_amodels_drawn = 0;
 518         r_outofsurfaces = 0;
 519         r_outofedges = 0;
 520
 521         D_SetupFrame ();
 522 }
 523