gl_rsurf.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_surf.c: surface-related refresh code
  21
  22 #include "quakedef.h"
  23 #include "r_shadow.h"
  24 #include "portals.h"
  25
  26 #define MAX_LIGHTMAP_SIZE 256
  27
  28 cvar_t r_ambient = {0, "r_ambient", "0", "brighter world cheat (not allowed in multiplayer), value is 0-128"};
  29 cvar_t r_drawportals = {0, "r_drawportals", "0", "shows portals (separating polygons) in world interior in quake1 maps"};
  30 cvar_t r_lockpvs = {0, "r_lockpvs", "0", "disables pvs switching, allows you to walk around and inspect what is visible from a given location in the map (anything not visible from your current location will not be drawn)"};
  31 cvar_t r_lockvisibility = {0, "r_lockvisibility", "0", "disables visibility updates, allows you to walk around and inspect what is visible from a given viewpoint in the map (anything offscreen at the moment this is enabled will not be drawn)"};
  32 cvar_t r_useportalculling = {0, "r_useportalculling", "1", "use advanced portal culling visibility method to improve performance over just Potentially Visible Set, provides an even more significant speed improvement in unvised maps"};
  33 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0", "draws sky depth masking in q3 maps (as in q1 maps), this means for example that sky polygons can hide other things"};
  34
  35 // flag arrays used for visibility checking on world model
  36 // (all other entities have no per-surface/per-leaf visibility checks)
  37 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_clusters
  38 unsigned char r_pvsbits[(32768+7)>>3];
  39 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_leafs
  40 unsigned char r_worldleafvisible[32768];
  41 // TODO: dynamic resize according to r_refdef.worldmodel->num_surfaces
  42 unsigned char r_worldsurfacevisible[262144];
  43
  44 /*
  45 ===============
  46 R_BuildLightMap
  47
  48 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  49 ===============
  50 */
  51 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  52 {
  53         int smax, tmax, i, j, size, size3, maps, l;
  54         unsigned int *bl, scale;
  55         unsigned char *lightmap, *out, *stain;
  56         static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  57         static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  58
  59         // update cached lighting info
  60         surface->cached_dlight = 0;
  61
  62         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  63         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  64         size = smax*tmax;
  65         size3 = size*3;
  66         lightmap = surface->lightmapinfo->samples;
  67
  68 // set to full bright if no light data
  69         bl = intblocklights;
  70         if (!ent->model->brushq1.lightdata)
  71         {
  72                 for (i = 0;i < size3;i++)
  73                         bl[i] = 255*256;
  74         }
  75         else
  76         {
  77 // clear to no light
  78                 memset(bl, 0, size*3*sizeof(unsigned int));
  79
  80 // add all the lightmaps
  81                 if (lightmap)
  82                 {
  83                         bl = intblocklights;
  84                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  85                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  86                                         bl[i] += lightmap[i] * scale;
  87                 }
  88         }
  89
  90         stain = surface->lightmapinfo->stainsamples;
  91         bl = intblocklights;
  92         out = templight;
  93         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  94         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  95         // be doubled during rendering to achieve 2x overbright
  96         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  97         if (ent->model->brushq1.lightmaprgba)
  98         {
  99                 for (i = 0;i < tmax;i++)
 100                 {
 101                         for (j = 0;j < smax;j++)
 102                         {
 103                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 104                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 105                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 106                                 *out++ = 255;
 107                         }
 108                 }
 109         }
 110         else
 111         {
 112                 for (i = 0;i < tmax;i++)
 113                 {
 114                         for (j = 0;j < smax;j++)
 115                         {
 116                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 117                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 118                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 119                         }
 120                 }
 121         }
 122
 123         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 124 }
 125
 126 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 127 {
 128         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 129         msurface_t *surface, *endsurface;
 130         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 131         unsigned char *bl;
 132         vec3_t impact;
 133
 134         maxdist = radius * radius;
 135         invradius = 1.0f / radius;
 136
 137 loc0:
 138         if (!node->plane)
 139                 return;
 140         ndist = PlaneDiff(origin, node->plane);
 141         if (ndist > radius)
 142         {
 143                 node = node->children[0];
 144                 goto loc0;
 145         }
 146         if (ndist < -radius)
 147         {
 148                 node = node->children[1];
 149                 goto loc0;
 150         }
 151
 152         dist2 = ndist * ndist;
 153         maxdist3 = maxdist - dist2;
 154
 155         if (node->plane->type < 3)
 156         {
 157                 VectorCopy(origin, impact);
 158                 impact[node->plane->type] -= ndist;
 159         }
 160         else
 161         {
 162                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 163                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 164                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 165         }
 166
 167         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 168         {
 169                 if (surface->lightmapinfo->stainsamples)
 170                 {
 171                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 172                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 173
 174                         impacts = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0];
 175                         impactt = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1];
 176
 177                         s = bound(0, impacts, smax * 16) - impacts;
 178                         t = bound(0, impactt, tmax * 16) - impactt;
 179                         i = s * s + t * t + dist2;
 180                         if (i > maxdist)
 181                                 continue;
 182
 183                         // reduce calculations
 184                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 185                                 sdtable[s] = i * i + dist2;
 186
 187                         bl = surface->lightmapinfo->stainsamples;
 188                         smax3 = smax * 3;
 189                         stained = false;
 190
 191                         i = impactt;
 192                         for (t = 0;t < tmax;t++, i -= 16)
 193                         {
 194                                 td = i * i;
 195                                 // make sure some part of it is visible on this line
 196                                 if (td < maxdist3)
 197                                 {
 198                                         maxdist2 = maxdist - td;
 199                                         for (s = 0;s < smax;s++)
 200                                         {
 201                                                 if (sdtable[s] < maxdist2)
 202                                                 {
 203                                                         ratio = lhrandom(0.0f, 1.0f);
 204                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 205                                                         if (a >= (1.0f / 64.0f))
 206                                                         {
 207                                                                 if (a > 1)
 208                                                                         a = 1;
 209                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 210                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 211                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 212                                                                 stained = true;
 213                                                         }
 214                                                 }
 215                                                 bl += 3;
 216                                         }
 217                                 }
 218                                 else // skip line
 219                                         bl += smax3;
 220                         }
 221                         // force lightmap upload
 222                         if (stained)
 223                                 surface->cached_dlight = true;
 224                 }
 225         }
 226
 227         if (node->children[0]->plane)
 228         {
 229                 if (node->children[1]->plane)
 230                 {
 231                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 232                         node = node->children[1];
 233                         goto loc0;
 234                 }
 235                 else
 236                 {
 237                         node = node->children[0];
 238                         goto loc0;
 239                 }
 240         }
 241         else if (node->children[1]->plane)
 242         {
 243                 node = node->children[1];
 244                 goto loc0;
 245         }
 246 }
 247
 248 void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
 249 {
 250         int n;
 251         float fcolor[8];
 252         entity_render_t *ent;
 253         model_t *model;
 254         vec3_t org;
 255         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 256                 return;
 257         fcolor[0] = cr1;
 258         fcolor[1] = cg1;
 259         fcolor[2] = cb1;
 260         fcolor[3] = ca1 * (1.0f / 64.0f);
 261         fcolor[4] = cr2 - cr1;
 262         fcolor[5] = cg2 - cg1;
 263         fcolor[6] = cb2 - cb1;
 264         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 265
 266         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 267
 268         // look for embedded bmodels
 269         for (n = 0;n < cl.num_brushmodel_entities;n++)
 270         {
 271                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 272                 model = ent->model;
 273                 if (model && model->name[0] == '*')
 274                 {
 275                         if (model->brush.data_nodes)
 276                         {
 277                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 278                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 279                         }
 280                 }
 281         }
 282 }
 283
 284
 285 /*
 286 =============================================================
 287
 288         BRUSH MODELS
 289
 290 =============================================================
 291 */
 292
 293 static void R_DrawPortal_Callback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 294 {
 295         const mportal_t *portal = (mportal_t *)ent;
 296         int i, numpoints;
 297         float *v;
 298         rmeshstate_t m;
 299         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 300         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 301         GL_DepthMask(false);
 302         GL_DepthTest(true);
 303         qglDisable(GL_CULL_FACE);
 304         R_Mesh_Matrix(&identitymatrix);
 305
 306         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 307
 308         memset(&m, 0, sizeof(m));
 309         m.pointer_vertex = vertex3f;
 310         R_Mesh_State(&m);
 311
 312         i = surfacenumber;
 313         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
 314                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
 315                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
 316                          0.125f);
 317         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 318                 VectorCopy(portal->points[i].position, v);
 319         R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements);
 320         qglEnable(GL_CULL_FACE);
 321 }
 322
 323 // LordHavoc: this is just a nice debugging tool, very slow
 324 static void R_DrawPortals(void)
 325 {
 326         int i, leafnum;
 327         mportal_t *portal;
 328         float center[3], f;
 329         model_t *model = r_refdef.worldmodel;
 330         if (model == NULL)
 331                 return;
 332         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 333         {
 334                 if (r_worldleafvisible[leafnum])
 335                 {
 336                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 337                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 338                         {
 339                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 340                                 if (!R_CullBox(portal->mins, portal->maxs))
 341                                 {
 342                                         VectorClear(center);
 343                                         for (i = 0;i < portal->numpoints;i++)
 344                                                 VectorAdd(center, portal->points[i].position, center);
 345                                         f = ixtable[portal->numpoints];
 346                                         VectorScale(center, f, center);
 347                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
 348                                 }
 349                         }
 350                 }
 351         }
 352 }
 353
 354 static void R_DrawCollisionBrush(colbrushf_t *brush)
 355 {
 356         int i;
 357         rmeshstate_t m;
 358         memset(&m, 0, sizeof(m));
 359         m.pointer_vertex = brush->points->v;
 360         R_Mesh_State(&m);
 361         i = (int)(((size_t)brush) / sizeof(colbrushf_t));
 362         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
 363         GL_LockArrays(0, brush->numpoints);
 364         R_Mesh_Draw(0, brush->numpoints, brush->numtriangles, brush->elements);
 365         GL_LockArrays(0, 0);
 366 }
 367
 368 static void R_DrawCollisionSurface(entity_render_t *ent, msurface_t *surface)
 369 {
 370         int i;
 371         rmeshstate_t m;
 372         if (!surface->num_collisiontriangles)
 373                 return;
 374         memset(&m, 0, sizeof(m));
 375         m.pointer_vertex = surface->data_collisionvertex3f;
 376         R_Mesh_State(&m);
 377         i = (int)(((size_t)surface) / sizeof(msurface_t));
 378         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
 379         GL_LockArrays(0, surface->num_collisionvertices);
 380         R_Mesh_Draw(0, surface->num_collisionvertices, surface->num_collisiontriangles, surface->data_collisionelement3i);
 381         GL_LockArrays(0, 0);
 382 }
 383
 384 void R_WorldVisibility(void)
 385 {
 386         int i, j, *mark;
 387         mleaf_t *leaf;
 388         mleaf_t *viewleaf;
 389         model_t *model = r_refdef.worldmodel;
 390
 391         if (!model)
 392                 return;
 393
 394         // if possible find the leaf the view origin is in
 395         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
 396         // if possible fetch the visible cluster bits
 397         if (!r_lockpvs.integer && model->brush.FatPVS)
 398                 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
 399
 400         if (!r_lockvisibility.integer)
 401         {
 402                 // clear the visible surface and leaf flags arrays
 403                 memset(r_worldsurfacevisible, 0, model->num_surfaces);
 404                 memset(r_worldleafvisible, 0, model->brush.num_leafs);
 405
 406                 // if floating around in the void (no pvs data available, and no
 407                 // portals available), simply use all on-screen leafs.
 408                 if (!viewleaf || viewleaf->clusterindex < 0)
 409                 {
 410                         // no visibility method: (used when floating around in the void)
 411                         // simply cull each leaf to the frustum (view pyramid)
 412                         // similar to quake's RecursiveWorldNode but without cache misses
 413                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 414                         {
 415                                 // if leaf is in current pvs and on the screen, mark its surfaces
 416                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 417                                 {
 418                                         renderstats.world_leafs++;
 419                                         r_worldleafvisible[j] = true;
 420                                         if (leaf->numleafsurfaces)
 421                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 422                                                         r_worldsurfacevisible[*mark] = true;
 423                                 }
 424                         }
 425                 }
 426                 // if the user prefers to disable portal culling (testing?), simply
 427                 // use all on-screen leafs that are in the pvs.
 428                 else if (!r_useportalculling.integer)
 429                 {
 430                         // pvs method:
 431                         // simply check if each leaf is in the Potentially Visible Set,
 432                         // and cull to frustum (view pyramid)
 433                         // similar to quake's RecursiveWorldNode but without cache misses
 434                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 435                         {
 436                                 // if leaf is in current pvs and on the screen, mark its surfaces
 437                                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 438                                 {
 439                                         renderstats.world_leafs++;
 440                                         r_worldleafvisible[j] = true;
 441                                         if (leaf->numleafsurfaces)
 442                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 443                                                         r_worldsurfacevisible[*mark] = true;
 444                                 }
 445                         }
 446                 }
 447                 // otherwise use a recursive portal flow, culling each portal to
 448                 // frustum and checking if the leaf the portal leads to is in the pvs
 449                 else
 450                 {
 451                         int leafstackpos;
 452                         mportal_t *p;
 453                         mleaf_t *leafstack[8192];
 454                         // simple-frustum portal method:
 455                         // follows portals leading outward from viewleaf, does not venture
 456                         // offscreen or into leafs that are not visible, faster than
 457                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 458                         // often culls some surfaces that pvs alone would miss
 459                         // (such as a room in pvs that is hidden behind a wall, but the
 460                         //  passage leading to the room is off-screen)
 461                         leafstack[0] = viewleaf;
 462                         leafstackpos = 1;
 463                         while (leafstackpos)
 464                         {
 465                                 renderstats.world_leafs++;
 466                                 leaf = leafstack[--leafstackpos];
 467                                 r_worldleafvisible[leaf - model->brush.data_leafs] = true;
 468                                 // mark any surfaces bounding this leaf
 469                                 if (leaf->numleafsurfaces)
 470                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 471                                                 r_worldsurfacevisible[*mark] = true;
 472                                 // follow portals into other leafs
 473                                 // the checks are:
 474                                 // if viewer is behind portal (portal faces outward into the scene)
 475                                 // and the portal polygon's bounding box is on the screen
 476                                 // and the leaf has not been visited yet
 477                                 // and the leaf is visible in the pvs
 478                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 479                                 for (p = leaf->portals;p;p = p->next)
 480                                 {
 481                                         renderstats.world_portals++;
 482                                         if (DotProduct(r_vieworigin, p->plane.normal) < (p->plane.dist + 1) && !R_CullBox(p->mins, p->maxs) && !r_worldleafvisible[p->past - model->brush.data_leafs] && CHECKPVSBIT(r_pvsbits, p->past->clusterindex))
 483                                                 leafstack[leafstackpos++] = p->past;
 484                                 }
 485                         }
 486                 }
 487         }
 488
 489         if (r_drawportals.integer)
 490                 R_DrawPortals();
 491 }
 492
 493 void R_Q1BSP_DrawSky(entity_render_t *ent)
 494 {
 495         if (ent->model == NULL)
 496                 return;
 497         R_DrawSurfaces(ent, true);
 498 }
 499
 500 void R_Q1BSP_Draw(entity_render_t *ent)
 501 {
 502         model_t *model = ent->model;
 503         if (model == NULL)
 504                 return;
 505         R_DrawSurfaces(ent, false);
 506         if (r_showcollisionbrushes.integer && model->brush.num_brushes && !r_showtrispass)
 507         {
 508                 int i;
 509                 msurface_t *surface;
 510                 q3mbrush_t *brush;
 511                 R_Mesh_Matrix(&ent->matrix);
 512                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 513                 GL_DepthMask(false);
 514                 GL_DepthTest(!r_showdisabledepthtest.integer);
 515                 qglPolygonOffset(r_showcollisionbrushes_polygonfactor.value, r_showcollisionbrushes_polygonoffset.value);
 516                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
 517                         if (brush->colbrushf && brush->colbrushf->numtriangles)
 518                                 R_DrawCollisionBrush(brush->colbrushf);
 519                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
 520                         if (surface->num_collisiontriangles)
 521                                 R_DrawCollisionSurface(ent, surface);
 522                 qglPolygonOffset(0, 0);
 523         }
 524 }
 525
 526 typedef struct r_q1bsp_getlightinfo_s
 527 {
 528         model_t *model;
 529         vec3_t relativelightorigin;
 530         float lightradius;
 531         int *outleaflist;
 532         unsigned char *outleafpvs;
 533         int outnumleafs;
 534         int *outsurfacelist;
 535         unsigned char *outsurfacepvs;
 536         int outnumsurfaces;
 537         vec3_t outmins;
 538         vec3_t outmaxs;
 539         vec3_t lightmins;
 540         vec3_t lightmaxs;
 541         const unsigned char *pvs;
 542 }
 543 r_q1bsp_getlightinfo_t;
 544
 545 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 546 {
 547         int sides;
 548         mleaf_t *leaf;
 549         for (;;)
 550         {
 551                 mplane_t *plane = node->plane;
 552                 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 553                 //      return;
 554                 if (!plane)
 555                         break;
 556                 if (plane->type < 3)
 557                         sides = ((info->lightmaxs[plane->type] >= plane->dist) | ((info->lightmins[plane->type] < plane->dist) << 1));
 558                 else
 559                         sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 560                 if (sides == 3)
 561                 {
 562                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 563                         node = node->children[1];
 564                 }
 565                 else if (sides == 0)
 566                         return; // ERROR: NAN bounding box!
 567                 else
 568                         node = node->children[sides - 1];
 569         }
 570         leaf = (mleaf_t *)node;
 571         if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
 572         {
 573                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 574                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 575                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 576                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 577                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 578                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 579                 if (info->outleafpvs)
 580                 {
 581                         int leafindex = leaf - info->model->brush.data_leafs;
 582                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 583                         {
 584                                 SETPVSBIT(info->outleafpvs, leafindex);
 585                                 info->outleaflist[info->outnumleafs++] = leafindex;
 586                         }
 587                 }
 588                 if (info->outsurfacepvs)
 589                 {
 590                         int leafsurfaceindex;
 591                         for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
 592                         {
 593                                 int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
 594                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 595                                 {
 596                                         msurface_t *surface = info->model->data_surfaces + surfaceindex;
 597                                         if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 598                                         {
 599                                                 int triangleindex, t;
 600                                                 const int *e;
 601                                                 const vec_t *v[3];
 602                                                 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 603                                                 {
 604                                                         v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 605                                                         v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 606                                                         v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 607                                                         if (PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && info->lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && info->lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && info->lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && info->lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && info->lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && info->lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
 608                                                         {
 609                                                                 SETPVSBIT(info->outsurfacepvs, surfaceindex);
 610                                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 611                                                                 break;
 612                                                         }
 613                                                 }
 614                                         }
 615                                 }
 616                         }
 617                 }
 618         }
 619 }
 620
 621 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, unsigned char *outleafpvs, int *outnumleafspointer, int *outsurfacelist, unsigned char *outsurfacepvs, int *outnumsurfacespointer)
 622 {
 623         r_q1bsp_getlightinfo_t info;
 624         VectorCopy(relativelightorigin, info.relativelightorigin);
 625         info.lightradius = lightradius;
 626         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
 627         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
 628         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
 629         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
 630         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
 631         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
 632         if (ent->model == NULL)
 633         {
 634                 VectorCopy(info.lightmins, outmins);
 635                 VectorCopy(info.lightmaxs, outmaxs);
 636                 *outnumleafspointer = 0;
 637                 *outnumsurfacespointer = 0;
 638                 return;
 639         }
 640         info.model = ent->model;
 641         info.outleaflist = outleaflist;
 642         info.outleafpvs = outleafpvs;
 643         info.outnumleafs = 0;
 644         info.outsurfacelist = outsurfacelist;
 645         info.outsurfacepvs = outsurfacepvs;
 646         info.outnumsurfaces = 0;
 647         VectorCopy(info.relativelightorigin, info.outmins);
 648         VectorCopy(info.relativelightorigin, info.outmaxs);
 649         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 650         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
 651         if (info.model->brush.GetPVS)
 652                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 653         else
 654                 info.pvs = NULL;
 655         R_UpdateAllTextureInfo(ent);
 656         if (r_shadow_compilingrtlight)
 657         {
 658                 // use portal recursion for exact light volume culling, and exact surface checking
 659                 Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, true, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs);
 660         }
 661         else if (r_shadow_realtime_dlight_portalculling.integer)
 662         {
 663                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
 664                 Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, r_shadow_realtime_dlight_portalculling.integer >= 2, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs);
 665         }
 666         else
 667         {
 668                 // use BSP recursion as lights are often small
 669                 R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
 670         }
 671
 672         // limit combined leaf box to light boundaries
 673         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 674         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
 675         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
 676         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
 677         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
 678         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
 679
 680         *outnumleafspointer = info.outnumleafs;
 681         *outnumsurfacespointer = info.outnumsurfaces;
 682 }
 683
 684 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
 685 {
 686         model_t *model = ent->model;
 687         msurface_t *surface;
 688         int surfacelistindex;
 689         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 690         texture_t *texture;
 691         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
 692         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 693         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 694         {
 695                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 696                 texture = surface->texture;
 697                 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 698                         continue;
 699                 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 700                         continue;
 701                 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs);
 702         }
 703         R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + projectdistance, numshadowmark, shadowmarklist);
 704         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false);
 705 }
 706
 707 extern float *rsurface_vertex3f;
 708 extern float *rsurface_svector3f;
 709 extern float *rsurface_tvector3f;
 710 extern float *rsurface_normal3f;
 711 extern void RSurf_SetVertexPointer(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t modelorg, qboolean generatenormals, qboolean generatetangents);
 712
 713 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
 714 {
 715         model_t *model = ent->model;
 716         msurface_t *surface;
 717         int surfacelistindex;
 718         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 719         vec3_t modelorg;
 720         texture_t *texture;
 721         // check the box in modelspace, it was already checked in worldspace
 722         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 723                 return;
 724         R_UpdateAllTextureInfo(ent);
 725         if (model->brush.shadowmesh)
 726         {
 727                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 728                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 729                 {
 730                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 731                         texture = surface->texture->currentframe;
 732                         if ((texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 733                                 continue;
 734                         if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 735                                 continue;
 736                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 737                 }
 738                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + projectdistance, numshadowmark, shadowmarklist);
 739         }
 740         else
 741         {
 742                 projectdistance = lightradius + ent->model->radius*2;
 743                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 744                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 745                 {
 746                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 747                         // FIXME: get current skin
 748                         texture = surface->texture;//R_FetchAliasSkin(ent, surface->groupmesh);
 749                         if (texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT) || !surface->num_triangles)
 750                                 continue;
 751                         RSurf_SetVertexPointer(ent, texture, surface, modelorg, false, false);
 752                         // identify lit faces within the bounding box
 753                         R_Shadow_PrepareShadowMark(surface->groupmesh->num_triangles);
 754                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, surface->groupmesh->data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 755                         R_Shadow_VolumeFromList(surface->groupmesh->num_vertices, surface->groupmesh->num_triangles, rsurface_vertex3f, surface->groupmesh->data_element3i, surface->groupmesh->data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
 756                 }
 757         }
 758 }
 759
 760 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 761 {
 762         msurface_t *surface = ent->model->data_surfaces + surfacenumber;
 763         texture_t *texture = surface->texture;
 764         R_UpdateTextureInfo(ent, texture);
 765         texture = texture->currentframe;
 766         R_Shadow_RenderMode_Begin();
 767         R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
 768         R_Shadow_RenderMode_Lighting(false, true);
 769         R_Shadow_SetupEntityLight(ent);
 770         R_Shadow_RenderSurfacesLighting(ent, texture, 1, &surface);
 771         R_Shadow_RenderMode_End();
 772 }
 773
 774 static void R_Q1BSP_DrawLight_TransparentBatch(const entity_render_t *ent, texture_t *texture, int batchnumsurfaces, msurface_t **batchsurfacelist)
 775 {
 776         int batchsurfaceindex;
 777         msurface_t *batchsurface;
 778         vec3_t tempcenter, center;
 779         for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
 780         {
 781                 batchsurface = batchsurfacelist[batchsurfaceindex];
 782                 tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
 783                 tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
 784                 tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
 785                 Matrix4x4_Transform(&ent->matrix, tempcenter, center);
 786                 R_MeshQueue_AddTransparent(texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_vieworigin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, batchsurface - ent->model->data_surfaces, r_shadow_rtlight);
 787         }
 788 }
 789
 790 #define RSURF_MAX_BATCHSURFACES 1024
 791
 792 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist)
 793 {
 794         model_t *model = ent->model;
 795         msurface_t *surface;
 796         texture_t *texture;
 797         int surfacelistindex, batchnumsurfaces;
 798         msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
 799         vec3_t modelorg;
 800         texture_t *tex;
 801         qboolean skip;
 802         R_UpdateAllTextureInfo(ent);
 803         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 804         tex = NULL;
 805         texture = NULL;
 806         skip = false;
 807         batchnumsurfaces = 0;
 808         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 809         {
 810                 if ((ent == r_refdef.worldentity && !r_worldsurfacevisible[surfacelist[surfacelistindex]]))
 811                         continue;
 812                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 813                 renderstats.lights_lighttriangles += surface->num_triangles;
 814                 if (tex != surface->texture)
 815                 {
 816                         if (batchnumsurfaces > 0)
 817                         {
 818                                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 819                                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 820                                 else
 821                                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 822                                 batchnumsurfaces = 0;
 823                         }
 824                         tex = surface->texture;
 825                         texture = surface->texture->currentframe;
 826                         skip = (texture->currentmaterialflags & MATERIALFLAG_SKY) != 0;
 827                         if (skip)
 828                                 continue;
 829                 }
 830                 if (!skip && surface->num_triangles)
 831                 {
 832                         if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
 833                         {
 834                                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 835                                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 836                                 else
 837                                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 838                                 batchnumsurfaces = 0;
 839                         }
 840                         batchsurfacelist[batchnumsurfaces++] = surface;
 841                 }
 842         }
 843         if (batchnumsurfaces > 0)
 844         {
 845                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 846                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 847                 else
 848                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 849                 batchnumsurfaces = 0;
 850         }
 851         qglEnable(GL_CULL_FACE);
 852 }
 853
 854 //Made by [515]
 855 void R_ReplaceWorldTexture (void)
 856 {
 857         model_t         *m;
 858         texture_t       *t;
 859         int                     i;
 860         const char      *r, *newt;
 861         m = r_refdef.worldmodel;
 862
 863         if(Cmd_Argc() < 2)
 864         {
 865                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
 866                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
 867                 return;
 868         }
 869         if(!cl.islocalgame || !cl.worldmodel)
 870         {
 871                 Con_Print("This command works only in singleplayer\n");
 872                 return;
 873         }
 874         r = Cmd_Argv(1);
 875         newt = Cmd_Argv(2);
 876         if(!newt[0])
 877                 newt = r;
 878         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 879         {
 880                 if(t->width && !strcasecmp(t->name, r))
 881                 {
 882                         if(Mod_LoadSkinFrame(&t->skin, (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
 883                         {
 884                                 Con_Printf("%s replaced with %s\n", r, newt);
 885                                 return;
 886                         }
 887                         else
 888                         {
 889                                 Con_Printf("%s was not found\n", newt);
 890                                 Mod_LoadSkinFrame(&t->skin, (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
 891                                 return;
 892                         }
 893                 }
 894         }
 895 }
 896
 897 //Made by [515]
 898 void R_ListWorldTextures (void)
 899 {
 900         model_t         *m;
 901         texture_t       *t;
 902         int                     i;
 903         m = r_refdef.worldmodel;
 904
 905         Con_Print("Worldmodel textures :\n");
 906         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 907                 if(t->skin.base != r_texture_notexture)
 908                         Con_Printf("%s\n", t->name);
 909 }
 910
 911 #if 0
 912 static void gl_surf_start(void)
 913 {
 914 }
 915
 916 static void gl_surf_shutdown(void)
 917 {
 918 }
 919
 920 static void gl_surf_newmap(void)
 921 {
 922 }
 923 #endif
 924
 925 void GL_Surf_Init(void)
 926 {
 927
 928         Cvar_RegisterVariable(&r_ambient);
 929         Cvar_RegisterVariable(&r_drawportals);
 930         Cvar_RegisterVariable(&r_lockpvs);
 931         Cvar_RegisterVariable(&r_lockvisibility);
 932         Cvar_RegisterVariable(&r_useportalculling);
 933         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
 934
 935         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");   // By [515]
 936         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map"); // By [515]
 937
 938         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
 939 }
 940