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