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 // if true, the view is currently in a leaf without pvs data
  44 qboolean r_worldnovis;
  45
  46 /*
  47 ===============
  48 R_BuildLightMap
  49
  50 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  51 ===============
  52 */
  53 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  54 {
  55         int smax, tmax, i, size, size3, maps, l;
  56         int *bl, scale;
  57         unsigned char *lightmap, *out, *stain;
  58         model_t *model = ent->model;
  59         static int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  60         static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  61
  62         // update cached lighting info
  63         surface->cached_dlight = 0;
  64
  65         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  66         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  67         size = smax*tmax;
  68         size3 = size*3;
  69         lightmap = surface->lightmapinfo->samples;
  70
  71 // set to full bright if no light data
  72         bl = intblocklights;
  73         if (!model->brushq1.lightdata)
  74         {
  75                 for (i = 0;i < size3;i++)
  76                         bl[i] = 255*256;
  77         }
  78         else
  79         {
  80 // clear to no light
  81                 memset(bl, 0, size3*sizeof(*bl));
  82
  83 // add all the lightmaps
  84                 if (lightmap)
  85                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  86                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  87                                         bl[i] += lightmap[i] * scale;
  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 (model->brushq1.lightmaprgba)
  98         {
  99                 for (i = 0;i < size;i++)
 100                 {
 101                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 102                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 103                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 104                         *out++ = 255;
 105                 }
 106         }
 107         else
 108         {
 109                 for (i = 0;i < size;i++)
 110                 {
 111                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 112                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 113                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 114                 }
 115         }
 116
 117         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 118
 119         // update the surface's deluxemap if it has one
 120         if (surface->deluxemaptexture != r_texture_blanknormalmap)
 121         {
 122                 vec3_t n;
 123                 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
 124                 lightmap = surface->lightmapinfo->samples;
 125                 // clear to no normalmap
 126                 bl = intblocklights;
 127                 memset(bl, 0, size3*sizeof(*bl));
 128                 // add all the normalmaps
 129                 if (lightmap && normalmap)
 130                 {
 131                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 132                         {
 133                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 134                                 {
 135                                         // add the normalmap with weighting proportional to the style's lightmap intensity
 136                                         l = (int)(VectorLength(lightmap + i*3) * scale);
 137                                         bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
 138                                         bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
 139                                         bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
 140                                 }
 141                         }
 142                 }
 143                 bl = intblocklights;
 144                 out = templight;
 145                 // we simply renormalize the weighted normals to get a valid deluxemap
 146                 if (model->brushq1.lightmaprgba)
 147                 {
 148                         for (i = 0;i < size;i++, bl += 3)
 149                         {
 150                                 VectorCopy(bl, n);
 151                                 VectorNormalize(n);
 152                                 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
 153                                 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
 154                                 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
 155                                 *out++ = 255;
 156                         }
 157                 }
 158                 else
 159                 {
 160                         for (i = 0;i < size;i++, bl += 3)
 161                         {
 162                                 VectorCopy(bl, n);
 163                                 VectorNormalize(n);
 164                                 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
 165                                 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
 166                                 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
 167                         }
 168                 }
 169                 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 170         }
 171 }
 172
 173 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 174 {
 175         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 176         msurface_t *surface, *endsurface;
 177         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 178         unsigned char *bl;
 179         vec3_t impact;
 180
 181         maxdist = radius * radius;
 182         invradius = 1.0f / radius;
 183
 184 loc0:
 185         if (!node->plane)
 186                 return;
 187         ndist = PlaneDiff(origin, node->plane);
 188         if (ndist > radius)
 189         {
 190                 node = node->children[0];
 191                 goto loc0;
 192         }
 193         if (ndist < -radius)
 194         {
 195                 node = node->children[1];
 196                 goto loc0;
 197         }
 198
 199         dist2 = ndist * ndist;
 200         maxdist3 = maxdist - dist2;
 201
 202         if (node->plane->type < 3)
 203         {
 204                 VectorCopy(origin, impact);
 205                 impact[node->plane->type] -= ndist;
 206         }
 207         else
 208         {
 209                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 210                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 211                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 212         }
 213
 214         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 215         {
 216                 if (surface->lightmapinfo->stainsamples)
 217                 {
 218                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 219                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 220
 221                         impacts = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0];
 222                         impactt = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1];
 223
 224                         s = bound(0, impacts, smax * 16) - impacts;
 225                         t = bound(0, impactt, tmax * 16) - impactt;
 226                         i = s * s + t * t + dist2;
 227                         if (i > maxdist)
 228                                 continue;
 229
 230                         // reduce calculations
 231                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 232                                 sdtable[s] = i * i + dist2;
 233
 234                         bl = surface->lightmapinfo->stainsamples;
 235                         smax3 = smax * 3;
 236                         stained = false;
 237
 238                         i = impactt;
 239                         for (t = 0;t < tmax;t++, i -= 16)
 240                         {
 241                                 td = i * i;
 242                                 // make sure some part of it is visible on this line
 243                                 if (td < maxdist3)
 244                                 {
 245                                         maxdist2 = maxdist - td;
 246                                         for (s = 0;s < smax;s++)
 247                                         {
 248                                                 if (sdtable[s] < maxdist2)
 249                                                 {
 250                                                         ratio = lhrandom(0.0f, 1.0f);
 251                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 252                                                         if (a >= (1.0f / 64.0f))
 253                                                         {
 254                                                                 if (a > 1)
 255                                                                         a = 1;
 256                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 257                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 258                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 259                                                                 stained = true;
 260                                                         }
 261                                                 }
 262                                                 bl += 3;
 263                                         }
 264                                 }
 265                                 else // skip line
 266                                         bl += smax3;
 267                         }
 268                         // force lightmap upload
 269                         if (stained)
 270                                 surface->cached_dlight = true;
 271                 }
 272         }
 273
 274         if (node->children[0]->plane)
 275         {
 276                 if (node->children[1]->plane)
 277                 {
 278                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 279                         node = node->children[1];
 280                         goto loc0;
 281                 }
 282                 else
 283                 {
 284                         node = node->children[0];
 285                         goto loc0;
 286                 }
 287         }
 288         else if (node->children[1]->plane)
 289         {
 290                 node = node->children[1];
 291                 goto loc0;
 292         }
 293 }
 294
 295 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)
 296 {
 297         int n;
 298         float fcolor[8];
 299         entity_render_t *ent;
 300         model_t *model;
 301         vec3_t org;
 302         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 303                 return;
 304         fcolor[0] = cr1;
 305         fcolor[1] = cg1;
 306         fcolor[2] = cb1;
 307         fcolor[3] = ca1 * (1.0f / 64.0f);
 308         fcolor[4] = cr2 - cr1;
 309         fcolor[5] = cg2 - cg1;
 310         fcolor[6] = cb2 - cb1;
 311         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 312
 313         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 314
 315         // look for embedded bmodels
 316         for (n = 0;n < cl.num_brushmodel_entities;n++)
 317         {
 318                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 319                 model = ent->model;
 320                 if (model && model->name[0] == '*')
 321                 {
 322                         if (model->brush.data_nodes)
 323                         {
 324                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 325                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 326                         }
 327                 }
 328         }
 329 }
 330
 331
 332 /*
 333 =============================================================
 334
 335         BRUSH MODELS
 336
 337 =============================================================
 338 */
 339
 340 static void R_DrawPortal_Callback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 341 {
 342         const mportal_t *portal = (mportal_t *)ent;
 343         int i, numpoints;
 344         float *v;
 345         rmeshstate_t m;
 346         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 347         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 348         GL_DepthMask(false);
 349         GL_DepthTest(true);
 350         qglDisable(GL_CULL_FACE);
 351         R_Mesh_Matrix(&identitymatrix);
 352
 353         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 354
 355         memset(&m, 0, sizeof(m));
 356         m.pointer_vertex = vertex3f;
 357         R_Mesh_State(&m);
 358
 359         i = surfacenumber;
 360         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
 361                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
 362                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
 363                          0.125f);
 364         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 365                 VectorCopy(portal->points[i].position, v);
 366         R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements);
 367         qglEnable(GL_CULL_FACE);
 368 }
 369
 370 // LordHavoc: this is just a nice debugging tool, very slow
 371 static void R_DrawPortals(void)
 372 {
 373         int i, leafnum;
 374         mportal_t *portal;
 375         float center[3], f;
 376         model_t *model = r_refdef.worldmodel;
 377         if (model == NULL)
 378                 return;
 379         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 380         {
 381                 if (r_worldleafvisible[leafnum])
 382                 {
 383                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 384                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 385                         {
 386                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 387                                 if (!R_CullBox(portal->mins, portal->maxs))
 388                                 {
 389                                         VectorClear(center);
 390                                         for (i = 0;i < portal->numpoints;i++)
 391                                                 VectorAdd(center, portal->points[i].position, center);
 392                                         f = ixtable[portal->numpoints];
 393                                         VectorScale(center, f, center);
 394                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
 395                                 }
 396                         }
 397                 }
 398         }
 399 }
 400
 401 void R_WorldVisibility(void)
 402 {
 403         int i, j, *mark;
 404         mleaf_t *leaf;
 405         mleaf_t *viewleaf;
 406         model_t *model = r_refdef.worldmodel;
 407
 408         if (!model)
 409                 return;
 410
 411         // if possible find the leaf the view origin is in
 412         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
 413         // if possible fetch the visible cluster bits
 414         if (!r_lockpvs.integer && model->brush.FatPVS)
 415                 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
 416
 417         if (!r_lockvisibility.integer)
 418         {
 419                 // clear the visible surface and leaf flags arrays
 420                 memset(r_worldsurfacevisible, 0, model->num_surfaces);
 421                 memset(r_worldleafvisible, 0, model->brush.num_leafs);
 422
 423                 r_worldnovis = false;
 424
 425                 // if floating around in the void (no pvs data available, and no
 426                 // portals available), simply use all on-screen leafs.
 427                 if (!viewleaf || viewleaf->clusterindex < 0)
 428                 {
 429                         // no visibility method: (used when floating around in the void)
 430                         // simply cull each leaf to the frustum (view pyramid)
 431                         // similar to quake's RecursiveWorldNode but without cache misses
 432                         r_worldnovis = true;
 433                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 434                         {
 435                                 // if leaf is in current pvs and on the screen, mark its surfaces
 436                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 437                                 {
 438                                         renderstats.world_leafs++;
 439                                         r_worldleafvisible[j] = true;
 440                                         if (leaf->numleafsurfaces)
 441                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 442                                                         r_worldsurfacevisible[*mark] = true;
 443                                 }
 444                         }
 445                 }
 446                 // if the user prefers to disable portal culling (testing?), simply
 447                 // use all on-screen leafs that are in the pvs.
 448                 else if (!r_useportalculling.integer)
 449                 {
 450                         // pvs method:
 451                         // simply check if each leaf is in the Potentially Visible Set,
 452                         // and cull to frustum (view pyramid)
 453                         // similar to quake's RecursiveWorldNode but without cache misses
 454                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 455                         {
 456                                 // if leaf is in current pvs and on the screen, mark its surfaces
 457                                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 458                                 {
 459                                         renderstats.world_leafs++;
 460                                         r_worldleafvisible[j] = true;
 461                                         if (leaf->numleafsurfaces)
 462                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 463                                                         r_worldsurfacevisible[*mark] = true;
 464                                 }
 465                         }
 466                 }
 467                 // otherwise use a recursive portal flow, culling each portal to
 468                 // frustum and checking if the leaf the portal leads to is in the pvs
 469                 else
 470                 {
 471                         int leafstackpos;
 472                         mportal_t *p;
 473                         mleaf_t *leafstack[8192];
 474                         // simple-frustum portal method:
 475                         // follows portals leading outward from viewleaf, does not venture
 476                         // offscreen or into leafs that are not visible, faster than
 477                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 478                         // often culls some surfaces that pvs alone would miss
 479                         // (such as a room in pvs that is hidden behind a wall, but the
 480                         //  passage leading to the room is off-screen)
 481                         leafstack[0] = viewleaf;
 482                         leafstackpos = 1;
 483                         while (leafstackpos)
 484                         {
 485                                 renderstats.world_leafs++;
 486                                 leaf = leafstack[--leafstackpos];
 487                                 r_worldleafvisible[leaf - model->brush.data_leafs] = true;
 488                                 // mark any surfaces bounding this leaf
 489                                 if (leaf->numleafsurfaces)
 490                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 491                                                 r_worldsurfacevisible[*mark] = true;
 492                                 // follow portals into other leafs
 493                                 // the checks are:
 494                                 // if viewer is behind portal (portal faces outward into the scene)
 495                                 // and the portal polygon's bounding box is on the screen
 496                                 // and the leaf has not been visited yet
 497                                 // and the leaf is visible in the pvs
 498                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 499                                 for (p = leaf->portals;p;p = p->next)
 500                                 {
 501                                         renderstats.world_portals++;
 502                                         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))
 503                                                 leafstack[leafstackpos++] = p->past;
 504                                 }
 505                         }
 506                 }
 507         }
 508
 509         if (r_drawportals.integer)
 510                 R_DrawPortals();
 511 }
 512
 513 void R_Q1BSP_DrawSky(entity_render_t *ent)
 514 {
 515         if (ent->model == NULL)
 516                 return;
 517         R_DrawSurfaces(ent, true);
 518 }
 519
 520 void R_Q1BSP_Draw(entity_render_t *ent)
 521 {
 522         model_t *model = ent->model;
 523         if (model == NULL)
 524                 return;
 525         R_DrawSurfaces(ent, false);
 526 }
 527
 528 typedef struct r_q1bsp_getlightinfo_s
 529 {
 530         model_t *model;
 531         vec3_t relativelightorigin;
 532         float lightradius;
 533         int *outleaflist;
 534         unsigned char *outleafpvs;
 535         int outnumleafs;
 536         int *outsurfacelist;
 537         unsigned char *outsurfacepvs;
 538         int outnumsurfaces;
 539         vec3_t outmins;
 540         vec3_t outmaxs;
 541         vec3_t lightmins;
 542         vec3_t lightmaxs;
 543         const unsigned char *pvs;
 544 }
 545 r_q1bsp_getlightinfo_t;
 546
 547 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 548 {
 549         int sides;
 550         mleaf_t *leaf;
 551         for (;;)
 552         {
 553                 mplane_t *plane = node->plane;
 554                 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 555                 //      return;
 556                 if (!plane)
 557                         break;
 558                 if (plane->type < 3)
 559                         sides = ((info->lightmaxs[plane->type] >= plane->dist) | ((info->lightmins[plane->type] < plane->dist) << 1));
 560                 else
 561                         sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 562                 if (sides == 3)
 563                 {
 564                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 565                         node = node->children[1];
 566                 }
 567                 else if (sides == 0)
 568                         return; // ERROR: NAN bounding box!
 569                 else
 570                         node = node->children[sides - 1];
 571         }
 572         leaf = (mleaf_t *)node;
 573         if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
 574         {
 575                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 576                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 577                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 578                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 579                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 580                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 581                 if (info->outleafpvs)
 582                 {
 583                         int leafindex = leaf - info->model->brush.data_leafs;
 584                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 585                         {
 586                                 SETPVSBIT(info->outleafpvs, leafindex);
 587                                 info->outleaflist[info->outnumleafs++] = leafindex;
 588                         }
 589                 }
 590                 if (info->outsurfacepvs)
 591                 {
 592                         int leafsurfaceindex;
 593                         for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
 594                         {
 595                                 int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
 596                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 597                                 {
 598                                         msurface_t *surface = info->model->data_surfaces + surfaceindex;
 599                                         if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 600                                         {
 601                                                 int triangleindex, t;
 602                                                 const int *e;
 603                                                 const vec_t *v[3];
 604                                                 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 605                                                 {
 606                                                         v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 607                                                         v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 608                                                         v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 609                                                         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])))
 610                                                         {
 611                                                                 SETPVSBIT(info->outsurfacepvs, surfaceindex);
 612                                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 613                                                                 break;
 614                                                         }
 615                                                 }
 616                                         }
 617                                 }
 618                         }
 619                 }
 620         }
 621 }
 622
 623 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)
 624 {
 625         r_q1bsp_getlightinfo_t info;
 626         VectorCopy(relativelightorigin, info.relativelightorigin);
 627         info.lightradius = lightradius;
 628         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
 629         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
 630         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
 631         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
 632         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
 633         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
 634         if (ent->model == NULL)
 635         {
 636                 VectorCopy(info.lightmins, outmins);
 637                 VectorCopy(info.lightmaxs, outmaxs);
 638                 *outnumleafspointer = 0;
 639                 *outnumsurfacespointer = 0;
 640                 return;
 641         }
 642         info.model = ent->model;
 643         info.outleaflist = outleaflist;
 644         info.outleafpvs = outleafpvs;
 645         info.outnumleafs = 0;
 646         info.outsurfacelist = outsurfacelist;
 647         info.outsurfacepvs = outsurfacepvs;
 648         info.outnumsurfaces = 0;
 649         VectorCopy(info.relativelightorigin, info.outmins);
 650         VectorCopy(info.relativelightorigin, info.outmaxs);
 651         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 652         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
 653         if (info.model->brush.GetPVS)
 654                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 655         else
 656                 info.pvs = NULL;
 657         R_UpdateAllTextureInfo(ent);
 658         if (r_shadow_compilingrtlight)
 659         {
 660                 // use portal recursion for exact light volume culling, and exact surface checking
 661                 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);
 662         }
 663         else if (r_shadow_realtime_dlight_portalculling.integer)
 664         {
 665                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
 666                 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);
 667         }
 668         else
 669         {
 670                 // use BSP recursion as lights are often small
 671                 R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
 672         }
 673
 674         // limit combined leaf box to light boundaries
 675         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 676         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
 677         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
 678         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
 679         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
 680         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
 681
 682         *outnumleafspointer = info.outnumleafs;
 683         *outnumsurfacespointer = info.outnumsurfaces;
 684 }
 685
 686 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
 687 {
 688         model_t *model = ent->model;
 689         msurface_t *surface;
 690         int surfacelistindex;
 691         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 692         texture_t *texture;
 693         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
 694         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 695         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 696         {
 697                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 698                 texture = surface->texture;
 699                 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 700                         continue;
 701                 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 702                         continue;
 703                 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);
 704         }
 705         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);
 706         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false);
 707 }
 708
 709 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)
 710 {
 711         model_t *model = ent->model;
 712         msurface_t *surface;
 713         int surfacelistindex;
 714         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 715         vec3_t modelorg;
 716         texture_t *texture, *currentexture = NULL;
 717         // check the box in modelspace, it was already checked in worldspace
 718         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
 719                 return;
 720         R_UpdateAllTextureInfo(ent);
 721         if (model->brush.shadowmesh)
 722         {
 723                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 724                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 725                 {
 726                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 727                         texture = surface->texture->currentframe;
 728                         if ((texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 729                                 continue;
 730                         if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 731                                 continue;
 732                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 733                 }
 734                 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);
 735         }
 736         else
 737         {
 738                 projectdistance = lightradius + model->radius*2;
 739                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 740                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 741                 {
 742                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 743                         texture = surface->texture->currentframe;
 744                         if (texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT) || !surface->num_triangles)
 745                                 continue;
 746                         if (currentexture != texture)
 747                         {
 748                                 currentexture = texture;
 749                                 RSurf_PrepareForBatch(ent, texture, modelorg);
 750                                 RSurf_SetPointersForPass(false, false);
 751                         }
 752                         if (rsurface_dynamicvertex)
 753                                 RSurf_PrepareDynamicSurfaceVertices(surface);
 754                         // identify lit faces within the bounding box
 755                         R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
 756                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, model->surfmesh.data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 757                         R_Shadow_VolumeFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, rsurface_vertex3f, model->surfmesh.data_element3i, model->surfmesh.data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
 758                 }
 759         }
 760 }
 761
 762 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 763 {
 764         msurface_t *surface = ent->model->data_surfaces + surfacenumber;
 765         texture_t *texture = surface->texture;
 766         R_UpdateTextureInfo(ent, texture);
 767         texture = texture->currentframe;
 768         R_Shadow_RenderMode_Begin();
 769         R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
 770         R_Shadow_RenderMode_Lighting(false, true);
 771         R_Shadow_SetupEntityLight(ent);
 772         R_Shadow_RenderSurfacesLighting(ent, texture, 1, &surface);
 773         R_Shadow_RenderMode_End();
 774 }
 775
 776 static void R_Q1BSP_DrawLight_TransparentBatch(const entity_render_t *ent, texture_t *texture, int batchnumsurfaces, msurface_t **batchsurfacelist)
 777 {
 778         int batchsurfaceindex;
 779         model_t *model = ent->model;
 780         msurface_t *batchsurface;
 781         vec3_t tempcenter, center;
 782         for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
 783         {
 784                 batchsurface = batchsurfacelist[batchsurfaceindex];
 785                 tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
 786                 tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
 787                 tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
 788                 Matrix4x4_Transform(&ent->matrix, tempcenter, center);
 789                 R_MeshQueue_AddTransparent(texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_vieworigin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, batchsurface - model->data_surfaces, r_shadow_rtlight);
 790         }
 791 }
 792
 793 #define RSURF_MAX_BATCHSURFACES 1024
 794
 795 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist)
 796 {
 797         model_t *model = ent->model;
 798         msurface_t *surface;
 799         texture_t *texture;
 800         int surfacelistindex, batchnumsurfaces;
 801         msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
 802         vec3_t modelorg;
 803         texture_t *tex;
 804         qboolean skip;
 805         R_UpdateAllTextureInfo(ent);
 806         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 807         tex = NULL;
 808         texture = NULL;
 809         skip = false;
 810         batchnumsurfaces = 0;
 811         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 812         {
 813                 if ((ent == r_refdef.worldentity && !r_worldsurfacevisible[surfacelist[surfacelistindex]]))
 814                         continue;
 815                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 816                 renderstats.lights_lighttriangles += surface->num_triangles;
 817                 if (tex != surface->texture)
 818                 {
 819                         if (batchnumsurfaces > 0)
 820                         {
 821                                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 822                                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 823                                 else
 824                                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 825                                 batchnumsurfaces = 0;
 826                         }
 827                         tex = surface->texture;
 828                         texture = surface->texture->currentframe;
 829                         skip = (texture->currentmaterialflags & MATERIALFLAG_SKY) != 0;
 830                         if (skip)
 831                                 continue;
 832                 }
 833                 if (!skip && surface->num_triangles)
 834                 {
 835                         if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
 836                         {
 837                                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 838                                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 839                                 else
 840                                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 841                                 batchnumsurfaces = 0;
 842                         }
 843                         batchsurfacelist[batchnumsurfaces++] = surface;
 844                 }
 845         }
 846         if (batchnumsurfaces > 0)
 847         {
 848                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 849                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 850                 else
 851                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 852                 batchnumsurfaces = 0;
 853         }
 854         qglEnable(GL_CULL_FACE);
 855 }
 856
 857 //Made by [515]
 858 void R_ReplaceWorldTexture (void)
 859 {
 860         model_t         *m;
 861         texture_t       *t;
 862         int                     i;
 863         const char      *r, *newt;
 864         m = r_refdef.worldmodel;
 865
 866         if(Cmd_Argc() < 2)
 867         {
 868                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
 869                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
 870                 return;
 871         }
 872         if(!cl.islocalgame || !cl.worldmodel)
 873         {
 874                 Con_Print("This command works only in singleplayer\n");
 875                 return;
 876         }
 877         r = Cmd_Argv(1);
 878         newt = Cmd_Argv(2);
 879         if(!newt[0])
 880                 newt = r;
 881         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 882         {
 883                 if(t->width && !strcasecmp(t->name, r))
 884                 {
 885                         if(Mod_LoadSkinFrame(&t->skin, (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
 886                         {
 887                                 Con_Printf("%s replaced with %s\n", r, newt);
 888                                 return;
 889                         }
 890                         else
 891                         {
 892                                 Con_Printf("%s was not found\n", newt);
 893                                 Mod_LoadSkinFrame(&t->skin, (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
 894                                 return;
 895                         }
 896                 }
 897         }
 898 }
 899
 900 //Made by [515]
 901 void R_ListWorldTextures (void)
 902 {
 903         model_t         *m;
 904         texture_t       *t;
 905         int                     i;
 906         m = r_refdef.worldmodel;
 907
 908         Con_Print("Worldmodel textures :\n");
 909         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 910                 if(t->skin.base != r_texture_notexture)
 911                         Con_Printf("%s\n", t->name);
 912 }
 913
 914 #if 0
 915 static void gl_surf_start(void)
 916 {
 917 }
 918
 919 static void gl_surf_shutdown(void)
 920 {
 921 }
 922
 923 static void gl_surf_newmap(void)
 924 {
 925 }
 926 #endif
 927
 928 void GL_Surf_Init(void)
 929 {
 930
 931         Cvar_RegisterVariable(&r_ambient);
 932         Cvar_RegisterVariable(&r_drawportals);
 933         Cvar_RegisterVariable(&r_lockpvs);
 934         Cvar_RegisterVariable(&r_lockvisibility);
 935         Cvar_RegisterVariable(&r_useportalculling);
 936         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
 937
 938         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");   // By [515]
 939         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map"); // By [515]
 940
 941         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
 942 }
 943