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