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"};
  29 cvar_t r_drawportals = {0, "r_drawportals", "0"};
  30 cvar_t r_lockpvs = {0, "r_lockpvs", "0"};
  31 cvar_t r_lockvisibility = {0, "r_lockvisibility", "0"};
  32 cvar_t r_useportalculling = {0, "r_useportalculling", "1"};
  33 cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
  34 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
  35 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};
  36
  37 // flag arrays used for visibility checking on world model
  38 // (all other entities have no per-surface/per-leaf visibility checks)
  39 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_clusters
  40 unsigned char r_pvsbits[(32768+7)>>3];
  41 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_leafs
  42 unsigned char r_worldleafvisible[32768];
  43 // TODO: dynamic resize according to r_refdef.worldmodel->num_surfaces
  44 unsigned char r_worldsurfacevisible[262144];
  45
  46 /*
  47 ===============
  48 R_BuildLightMap
  49
  50 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  51 ===============
  52 */
  53 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  54 {
  55         int smax, tmax, i, j, size, size3, maps, stride, l;
  56         unsigned int *bl, scale;
  57         unsigned char *lightmap, *out, *stain;
  58         static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  59         static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  60
  61         // update cached lighting info
  62         surface->cached_dlight = 0;
  63
  64         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  65         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  66         size = smax*tmax;
  67         size3 = size*3;
  68         lightmap = surface->lightmapinfo->samples;
  69
  70 // set to full bright if no light data
  71         bl = intblocklights;
  72         if (!ent->model->brushq1.lightdata)
  73         {
  74                 for (i = 0;i < size3;i++)
  75                         bl[i] = 255*256;
  76         }
  77         else
  78         {
  79 // clear to no light
  80                 memset(bl, 0, size*3*sizeof(unsigned int));
  81
  82 // add all the lightmaps
  83                 if (lightmap)
  84                 {
  85                         bl = intblocklights;
  86                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  87                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  88                                         bl[i] += lightmap[i] * scale;
  89                 }
  90         }
  91
  92         stain = surface->lightmapinfo->stainsamples;
  93         bl = intblocklights;
  94         out = templight;
  95         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  96         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  97         // be doubled during rendering to achieve 2x overbright
  98         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  99         if (ent->model->brushq1.lightmaprgba)
 100         {
 101                 stride = (surface->lightmapinfo->lightmaptexturestride - smax) * 4;
 102                 for (i = 0;i < tmax;i++, out += stride)
 103                 {
 104                         for (j = 0;j < smax;j++)
 105                         {
 106                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 107                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 108                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 109                                 *out++ = 255;
 110                         }
 111                 }
 112         }
 113         else
 114         {
 115                 stride = (surface->lightmapinfo->lightmaptexturestride - smax) * 3;
 116                 for (i = 0;i < tmax;i++, out += stride)
 117                 {
 118                         for (j = 0;j < smax;j++)
 119                         {
 120                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 121                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 122                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 123                         }
 124                 }
 125         }
 126
 127         R_UpdateTexture(surface->lightmaptexture, templight);
 128 }
 129
 130 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 131 {
 132         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 133         msurface_t *surface, *endsurface;
 134         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 135         unsigned char *bl;
 136         vec3_t impact;
 137
 138         maxdist = radius * radius;
 139         invradius = 1.0f / radius;
 140
 141 loc0:
 142         if (!node->plane)
 143                 return;
 144         ndist = PlaneDiff(origin, node->plane);
 145         if (ndist > radius)
 146         {
 147                 node = node->children[0];
 148                 goto loc0;
 149         }
 150         if (ndist < -radius)
 151         {
 152                 node = node->children[1];
 153                 goto loc0;
 154         }
 155
 156         dist2 = ndist * ndist;
 157         maxdist3 = maxdist - dist2;
 158
 159         if (node->plane->type < 3)
 160         {
 161                 VectorCopy(origin, impact);
 162                 impact[node->plane->type] -= ndist;
 163         }
 164         else
 165         {
 166                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 167                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 168                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 169         }
 170
 171         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 172         {
 173                 if (surface->lightmapinfo->stainsamples)
 174                 {
 175                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 176                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 177
 178                         impacts = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0];
 179                         impactt = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1];
 180
 181                         s = bound(0, impacts, smax * 16) - impacts;
 182                         t = bound(0, impactt, tmax * 16) - impactt;
 183                         i = s * s + t * t + dist2;
 184                         if (i > maxdist)
 185                                 continue;
 186
 187                         // reduce calculations
 188                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 189                                 sdtable[s] = i * i + dist2;
 190
 191                         bl = surface->lightmapinfo->stainsamples;
 192                         smax3 = smax * 3;
 193                         stained = false;
 194
 195                         i = impactt;
 196                         for (t = 0;t < tmax;t++, i -= 16)
 197                         {
 198                                 td = i * i;
 199                                 // make sure some part of it is visible on this line
 200                                 if (td < maxdist3)
 201                                 {
 202                                         maxdist2 = maxdist - td;
 203                                         for (s = 0;s < smax;s++)
 204                                         {
 205                                                 if (sdtable[s] < maxdist2)
 206                                                 {
 207                                                         ratio = lhrandom(0.0f, 1.0f);
 208                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 209                                                         if (a >= (1.0f / 64.0f))
 210                                                         {
 211                                                                 if (a > 1)
 212                                                                         a = 1;
 213                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 214                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 215                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 216                                                                 stained = true;
 217                                                         }
 218                                                 }
 219                                                 bl += 3;
 220                                         }
 221                                 }
 222                                 else // skip line
 223                                         bl += smax3;
 224                         }
 225                         // force lightmap upload
 226                         if (stained)
 227                                 surface->cached_dlight = true;
 228                 }
 229         }
 230
 231         if (node->children[0]->plane)
 232         {
 233                 if (node->children[1]->plane)
 234                 {
 235                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 236                         node = node->children[1];
 237                         goto loc0;
 238                 }
 239                 else
 240                 {
 241                         node = node->children[0];
 242                         goto loc0;
 243                 }
 244         }
 245         else if (node->children[1]->plane)
 246         {
 247                 node = node->children[1];
 248                 goto loc0;
 249         }
 250 }
 251
 252 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)
 253 {
 254         int n;
 255         float fcolor[8];
 256         entity_render_t *ent;
 257         model_t *model;
 258         vec3_t org;
 259         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 260                 return;
 261         fcolor[0] = cr1;
 262         fcolor[1] = cg1;
 263         fcolor[2] = cb1;
 264         fcolor[3] = ca1 * (1.0f / 64.0f);
 265         fcolor[4] = cr2 - cr1;
 266         fcolor[5] = cg2 - cg1;
 267         fcolor[6] = cb2 - cb1;
 268         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 269
 270         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 271
 272         // look for embedded bmodels
 273         for (n = 0;n < cl_num_brushmodel_entities;n++)
 274         {
 275                 ent = &cl_entities[cl_brushmodel_entities[n]].render;
 276                 model = ent->model;
 277                 if (model && model->name[0] == '*')
 278                 {
 279                         if (model->brush.data_nodes)
 280                         {
 281                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 282                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 283                         }
 284                 }
 285         }
 286 }
 287
 288
 289 /*
 290 =============================================================
 291
 292         BRUSH MODELS
 293
 294 =============================================================
 295 */
 296
 297 static void R_DrawPortal_Callback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 298 {
 299         const mportal_t *portal = (mportal_t *)ent;
 300         int i;
 301         float *v;
 302         rmeshstate_t m;
 303         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 304         GL_DepthMask(false);
 305         GL_DepthTest(true);
 306         R_Mesh_Matrix(&r_identitymatrix);
 307
 308         memset(&m, 0, sizeof(m));
 309         m.pointer_vertex = varray_vertex3f;
 310         R_Mesh_State(&m);
 311
 312         i = surfacenumber;
 313         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
 314                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
 315                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
 316                          0.125f);
 317         if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
 318         {
 319                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
 320                         VectorCopy(portal->points[i].position, v);
 321         }
 322         else
 323                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
 324                         VectorCopy(portal->points[i].position, v);
 325         GL_LockArrays(0, portal->numpoints);
 326         R_Mesh_Draw(0, portal->numpoints, portal->numpoints - 2, polygonelements);
 327         GL_LockArrays(0, 0);
 328 }
 329
 330 // LordHavoc: this is just a nice debugging tool, very slow
 331 static void R_DrawPortals(void)
 332 {
 333         int i, leafnum;
 334         mportal_t *portal;
 335         float center[3], f;
 336         model_t *model = r_refdef.worldmodel;
 337         if (model == NULL)
 338                 return;
 339         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 340         {
 341                 if (r_worldleafvisible[leafnum])
 342                 {
 343                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 344                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 345                         {
 346                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 347                                 if (!R_CullBox(portal->mins, portal->maxs))
 348                                 {
 349                                         VectorClear(center);
 350                                         for (i = 0;i < portal->numpoints;i++)
 351                                                 VectorAdd(center, portal->points[i].position, center);
 352                                         f = ixtable[portal->numpoints];
 353                                         VectorScale(center, f, center);
 354                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
 355                                 }
 356                         }
 357                 }
 358         }
 359 }
 360
 361 static void R_DrawCollisionBrush(colbrushf_t *brush)
 362 {
 363         int i;
 364         rmeshstate_t m;
 365         memset(&m, 0, sizeof(m));
 366         m.pointer_vertex = brush->points->v;
 367         R_Mesh_State(&m);
 368         i = (int)(((size_t)brush) / sizeof(colbrushf_t));
 369         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
 370         GL_LockArrays(0, brush->numpoints);
 371         R_Mesh_Draw(0, brush->numpoints, brush->numtriangles, brush->elements);
 372         GL_LockArrays(0, 0);
 373 }
 374
 375 static void R_DrawCollisionSurface(entity_render_t *ent, msurface_t *surface)
 376 {
 377         int i;
 378         rmeshstate_t m;
 379         if (!surface->num_collisiontriangles)
 380                 return;
 381         memset(&m, 0, sizeof(m));
 382         m.pointer_vertex = surface->data_collisionvertex3f;
 383         R_Mesh_State(&m);
 384         i = (int)(((size_t)surface) / sizeof(msurface_t));
 385         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
 386         GL_LockArrays(0, surface->num_collisionvertices);
 387         R_Mesh_Draw(0, surface->num_collisionvertices, surface->num_collisiontriangles, surface->data_collisionelement3i);
 388         GL_LockArrays(0, 0);
 389 }
 390
 391 void R_WorldVisibility(void)
 392 {
 393         int i, j, *mark;
 394         mleaf_t *leaf;
 395         mleaf_t *viewleaf;
 396         model_t *model = r_refdef.worldmodel;
 397
 398         if (!model)
 399                 return;
 400
 401         // if possible find the leaf the view origin is in
 402         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
 403         // if possible fetch the visible cluster bits
 404         if (!r_lockpvs.integer && model->brush.FatPVS)
 405                 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
 406
 407         if (!r_lockvisibility.integer)
 408         {
 409                 // clear the visible surface and leaf flags arrays
 410                 memset(r_worldsurfacevisible, 0, model->num_surfaces);
 411                 memset(r_worldleafvisible, 0, model->brush.num_leafs);
 412
 413                 // if floating around in the void (no pvs data available, and no
 414                 // portals available), simply use all on-screen leafs.
 415                 if (!viewleaf || viewleaf->clusterindex < 0)
 416                 {
 417                         // no visibility method: (used when floating around in the void)
 418                         // simply cull each leaf to the frustum (view pyramid)
 419                         // similar to quake's RecursiveWorldNode but without cache misses
 420                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 421                         {
 422                                 // if leaf is in current pvs and on the screen, mark its surfaces
 423                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 424                                 {
 425                                         renderstats.world_leafs++;
 426                                         r_worldleafvisible[j] = true;
 427                                         if (leaf->numleafsurfaces)
 428                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 429                                                         r_worldsurfacevisible[*mark] = true;
 430                                 }
 431                         }
 432                 }
 433                 // if the user prefers to disable portal culling (testing?), simply
 434                 // use all on-screen leafs that are in the pvs.
 435                 else if (!r_useportalculling.integer)
 436                 {
 437                         // pvs method:
 438                         // simply check if each leaf is in the Potentially Visible Set,
 439                         // and cull to frustum (view pyramid)
 440                         // similar to quake's RecursiveWorldNode but without cache misses
 441                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 442                         {
 443                                 // if leaf is in current pvs and on the screen, mark its surfaces
 444                                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 445                                 {
 446                                         renderstats.world_leafs++;
 447                                         r_worldleafvisible[j] = true;
 448                                         if (leaf->numleafsurfaces)
 449                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 450                                                         r_worldsurfacevisible[*mark] = true;
 451                                 }
 452                         }
 453                 }
 454                 // otherwise use a recursive portal flow, culling each portal to
 455                 // frustum and checking if the leaf the portal leads to is in the pvs
 456                 else
 457                 {
 458                         int leafstackpos;
 459                         mportal_t *p;
 460                         mleaf_t *leafstack[8192];
 461                         // simple-frustum portal method:
 462                         // follows portals leading outward from viewleaf, does not venture
 463                         // offscreen or into leafs that are not visible, faster than
 464                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 465                         // often culls some surfaces that pvs alone would miss
 466                         // (such as a room in pvs that is hidden behind a wall, but the
 467                         //  passage leading to the room is off-screen)
 468                         leafstack[0] = viewleaf;
 469                         leafstackpos = 1;
 470                         while (leafstackpos)
 471                         {
 472                                 renderstats.world_leafs++;
 473                                 leaf = leafstack[--leafstackpos];
 474                                 r_worldleafvisible[leaf - model->brush.data_leafs] = true;
 475                                 // mark any surfaces bounding this leaf
 476                                 if (leaf->numleafsurfaces)
 477                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 478                                                 r_worldsurfacevisible[*mark] = true;
 479                                 // follow portals into other leafs
 480                                 // the checks are:
 481                                 // if viewer is behind portal (portal faces outward into the scene)
 482                                 // and the portal polygon's bounding box is on the screen
 483                                 // and the leaf has not been visited yet
 484                                 // and the leaf is visible in the pvs
 485                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 486                                 for (p = leaf->portals;p;p = p->next)
 487                                 {
 488                                         renderstats.world_portals++;
 489                                         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))
 490                                                 leafstack[leafstackpos++] = p->past;
 491                                 }
 492                         }
 493                 }
 494         }
 495
 496         if (r_drawportals.integer)
 497                 R_DrawPortals();
 498 }
 499
 500 void R_Q1BSP_DrawSky(entity_render_t *ent)
 501 {
 502         if (ent->model == NULL)
 503                 return;
 504         if (r_drawcollisionbrushes.integer < 2)
 505                 R_DrawSurfaces(ent, true);
 506 }
 507
 508 void R_Q1BSP_Draw(entity_render_t *ent)
 509 {
 510         model_t *model = ent->model;
 511         if (model == NULL)
 512                 return;
 513         if (r_drawcollisionbrushes.integer < 2)
 514                 R_DrawSurfaces(ent, false);
 515         if (r_drawcollisionbrushes.integer >= 1 && model->brush.num_brushes)
 516         {
 517                 int i;
 518                 msurface_t *surface;
 519                 q3mbrush_t *brush;
 520                 R_Mesh_Matrix(&ent->matrix);
 521                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 522                 GL_DepthMask(false);
 523                 GL_DepthTest(true);
 524                 qglPolygonOffset(r_drawcollisionbrushes_polygonfactor.value, r_drawcollisionbrushes_polygonoffset.value);
 525                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
 526                         if (brush->colbrushf && brush->colbrushf->numtriangles)
 527                                 R_DrawCollisionBrush(brush->colbrushf);
 528                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
 529                         if (surface->num_collisiontriangles)
 530                                 R_DrawCollisionSurface(ent, surface);
 531                 qglPolygonOffset(0, 0);
 532         }
 533 }
 534
 535 typedef struct r_q1bsp_getlightinfo_s
 536 {
 537         model_t *model;
 538         vec3_t relativelightorigin;
 539         float lightradius;
 540         int *outleaflist;
 541         unsigned char *outleafpvs;
 542         int outnumleafs;
 543         int *outsurfacelist;
 544         unsigned char *outsurfacepvs;
 545         int outnumsurfaces;
 546         vec3_t outmins;
 547         vec3_t outmaxs;
 548         vec3_t lightmins;
 549         vec3_t lightmaxs;
 550         const unsigned char *pvs;
 551 }
 552 r_q1bsp_getlightinfo_t;
 553
 554 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 555 {
 556         int sides;
 557         mleaf_t *leaf;
 558         for (;;)
 559         {
 560                 mplane_t *plane = node->plane;
 561                 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 562                 //      return;
 563                 if (!plane)
 564                         break;
 565                 if (plane->type < 3)
 566                         sides = ((info->lightmaxs[plane->type] >= plane->dist) | ((info->lightmins[plane->type] < plane->dist) << 1));
 567                 else
 568                         sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 569                 if (sides == 3)
 570                 {
 571                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 572                         node = node->children[1];
 573                 }
 574                 else
 575                         node = node->children[sides - 1];
 576         }
 577         leaf = (mleaf_t *)node;
 578         if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
 579         {
 580                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 581                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 582                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 583                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 584                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 585                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 586                 if (info->outleafpvs)
 587                 {
 588                         int leafindex = leaf - info->model->brush.data_leafs;
 589                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 590                         {
 591                                 SETPVSBIT(info->outleafpvs, leafindex);
 592                                 info->outleaflist[info->outnumleafs++] = leafindex;
 593                         }
 594                 }
 595                 if (info->outsurfacepvs)
 596                 {
 597                         int leafsurfaceindex;
 598                         for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
 599                         {
 600                                 int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
 601                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 602                                 {
 603                                         msurface_t *surface = info->model->data_surfaces + surfaceindex;
 604                                         if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 605                                         {
 606                                                 int triangleindex, t;
 607                                                 const int *e;
 608                                                 const vec_t *v[3];
 609                                                 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 610                                                 {
 611                                                         v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 612                                                         v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 613                                                         v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 614                                                         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])))
 615                                                         {
 616                                                                 SETPVSBIT(info->outsurfacepvs, surfaceindex);
 617                                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 618                                                                 break;
 619                                                         }
 620                                                 }
 621                                         }
 622                                 }
 623                         }
 624                 }
 625         }
 626 }
 627
 628 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)
 629 {
 630         r_q1bsp_getlightinfo_t info;
 631         VectorCopy(relativelightorigin, info.relativelightorigin);
 632         info.lightradius = lightradius;
 633         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
 634         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
 635         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
 636         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
 637         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
 638         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
 639         if (ent->model == NULL)
 640         {
 641                 VectorCopy(info.lightmins, outmins);
 642                 VectorCopy(info.lightmaxs, outmaxs);
 643                 *outnumleafspointer = 0;
 644                 *outnumsurfacespointer = 0;
 645                 return;
 646         }
 647         info.model = ent->model;
 648         info.outleaflist = outleaflist;
 649         info.outleafpvs = outleafpvs;
 650         info.outnumleafs = 0;
 651         info.outsurfacelist = outsurfacelist;
 652         info.outsurfacepvs = outsurfacepvs;
 653         info.outnumsurfaces = 0;
 654         VectorCopy(info.relativelightorigin, info.outmins);
 655         VectorCopy(info.relativelightorigin, info.outmaxs);
 656         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 657         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
 658         if (info.model->brush.GetPVS)
 659                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 660         else
 661                 info.pvs = NULL;
 662         R_UpdateAllTextureInfo(ent);
 663         if (r_shadow_compilingrtlight)
 664         {
 665                 // use portal recursion for exact light volume culling, and exact surface checking
 666                 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);
 667         }
 668         else if (r_shadow_realtime_dlight_portalculling.integer)
 669         {
 670                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
 671                 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);
 672         }
 673         else
 674         {
 675                 // use BSP recursion as lights are often small
 676                 R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
 677         }
 678
 679         // limit combined leaf box to light boundaries
 680         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 681         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
 682         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
 683         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
 684         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
 685         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
 686
 687         *outnumleafspointer = info.outnumleafs;
 688         *outnumsurfacespointer = info.outnumsurfaces;
 689 }
 690
 691 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
 692 {
 693         model_t *model = ent->model;
 694         msurface_t *surface;
 695         int surfacelistindex;
 696         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 697         texture_t *texture;
 698         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_shadow_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
 699         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 700         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 701         {
 702                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 703                 texture = surface->texture;
 704                 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 705                         continue;
 706                 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 707                         continue;
 708                 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);
 709         }
 710         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);
 711         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false);
 712 }
 713
 714 extern float *rsurface_vertex3f;
 715 extern float *rsurface_svector3f;
 716 extern float *rsurface_tvector3f;
 717 extern float *rsurface_normal3f;
 718 extern void RSurf_SetVertexPointer(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t modelorg);
 719
 720 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)
 721 {
 722         model_t *model = ent->model;
 723         msurface_t *surface;
 724         int surfacelistindex;
 725         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 726         vec3_t modelorg;
 727         texture_t *texture;
 728         // check the box in modelspace, it was already checked in worldspace
 729         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 730                 return;
 731         if (r_drawcollisionbrushes.integer >= 2)
 732                 return;
 733         R_UpdateAllTextureInfo(ent);
 734         if (model->brush.shadowmesh)
 735         {
 736                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 737                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 738                 {
 739                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 740                         texture = surface->texture->currentframe;
 741                         if ((texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 742                                 continue;
 743                         if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 744                                 continue;
 745                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 746                 }
 747                 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);
 748         }
 749         else
 750         {
 751                 projectdistance = lightradius + ent->model->radius*2;
 752                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 753                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 754                 {
 755                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 756                         // FIXME: get current skin
 757                         texture = surface->texture;//R_FetchAliasSkin(ent, surface->groupmesh);
 758                         if (texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT) || !surface->num_triangles)
 759                                 continue;
 760                         RSurf_SetVertexPointer(ent, texture, surface, modelorg);
 761                         // identify lit faces within the bounding box
 762                         R_Shadow_PrepareShadowMark(surface->groupmesh->num_triangles);
 763                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, surface->groupmesh->data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 764                         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);
 765                 }
 766         }
 767 }
 768
 769 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 770 {
 771         msurface_t *surface = ent->model->data_surfaces + surfacenumber;
 772         texture_t *texture = surface->texture;
 773         R_UpdateTextureInfo(ent, texture);
 774         texture = texture->currentframe;
 775         R_Shadow_RenderMode_Begin();
 776         R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
 777         R_Shadow_RenderMode_Lighting(false, true);
 778         R_Shadow_SetupEntityLight(ent);
 779         R_Shadow_RenderSurfacesLighting(ent, texture, 1, &surface);
 780         R_Shadow_RenderMode_End();
 781 }
 782
 783 #define RSURF_MAX_BATCHSURFACES 1024
 784
 785 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist)
 786 {
 787         model_t *model = ent->model;
 788         msurface_t *surface;
 789         texture_t *texture;
 790         int surfacelistindex, batchnumsurfaces;
 791         msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
 792         vec3_t modelorg;
 793         texture_t *tex;
 794         qboolean skip;
 795         if (r_drawcollisionbrushes.integer >= 2)
 796                 return;
 797         R_UpdateAllTextureInfo(ent);
 798         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 799         tex = NULL;
 800         texture = NULL;
 801         skip = false;
 802         batchnumsurfaces = 0;
 803         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 804         {
 805                 if ((ent == r_refdef.worldentity && !r_worldsurfacevisible[surfacelist[surfacelistindex]]))
 806                         continue;
 807                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 808                 renderstats.lights_lighttriangles += surface->num_triangles;
 809                 if (tex != surface->texture)
 810                 {
 811                         if (batchnumsurfaces > 0)
 812                         {
 813                                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 814                                 {
 815                                         int batchsurfaceindex;
 816                                         for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
 817                                         {
 818                                                 msurface_t *batchsurface = batchsurfacelist[batchsurfaceindex];
 819                                                 vec3_t tempcenter, center;
 820                                                 tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
 821                                                 tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
 822                                                 tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
 823                                                 Matrix4x4_Transform(&ent->matrix, tempcenter, center);
 824                                                 R_MeshQueue_AddTransparent(texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_vieworigin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, batchsurface - ent->model->data_surfaces, r_shadow_rtlight);
 825                                         }
 826                                 }
 827                                 else
 828                                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 829                                 batchnumsurfaces = 0;
 830                         }
 831                         tex = surface->texture;
 832                         texture = surface->texture->currentframe;
 833                         skip = (texture->currentmaterialflags & MATERIALFLAG_SKY) != 0;
 834                         if (skip)
 835                                 continue;
 836                 }
 837                 if (!skip && surface->num_triangles)
 838                 {
 839                         if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
 840                         {
 841                                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 842                                 {
 843                                         int batchsurfaceindex;
 844                                         for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
 845                                         {
 846                                                 msurface_t *batchsurface = batchsurfacelist[batchsurfaceindex];
 847                                                 vec3_t tempcenter, center;
 848                                                 tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
 849                                                 tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
 850                                                 tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
 851                                                 Matrix4x4_Transform(&ent->matrix, tempcenter, center);
 852                                                 R_MeshQueue_AddTransparent(texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_vieworigin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, batchsurface - ent->model->data_surfaces, r_shadow_rtlight);
 853                                         }
 854                                 }
 855                                 else
 856                                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 857                                 batchnumsurfaces = 0;
 858                         }
 859                         batchsurfacelist[batchnumsurfaces++] = surface;
 860                 }
 861         }
 862         if (batchnumsurfaces > 0)
 863         {
 864                 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 865                 batchnumsurfaces = 0;
 866         }
 867         qglEnable(GL_CULL_FACE);
 868 }
 869
 870 //Made by [515]
 871 void R_ReplaceWorldTexture (void)
 872 {
 873         model_t         *m;
 874         texture_t       *t;
 875         int                     i;
 876         const char      *r, *newt;
 877         m = r_refdef.worldmodel;
 878
 879         if(Cmd_Argc() < 2)
 880         {
 881                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
 882                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
 883                 return;
 884         }
 885         if(!cl.islocalgame || !cl.worldmodel)
 886         {
 887                 Con_Print("This command works only in singleplayer\n");
 888                 return;
 889         }
 890         r = Cmd_Argv(1);
 891         newt = Cmd_Argv(2);
 892         if(!newt[0])
 893                 newt = r;
 894         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 895         {
 896                 if(t->width && !strcasecmp(t->name, r))
 897                 {
 898                         if(Mod_LoadSkinFrame(&t->skin, (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
 899                         {
 900                                 Con_Printf("%s replaced with %s\n", r, newt);
 901                                 return;
 902                         }
 903                         else
 904                         {
 905                                 Con_Printf("%s was not found\n", newt);
 906                                 Mod_LoadSkinFrame(&t->skin, (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
 907                                 return;
 908                         }
 909                 }
 910         }
 911 }
 912
 913 //Made by [515]
 914 void R_ListWorldTextures (void)
 915 {
 916         model_t         *m;
 917         texture_t       *t;
 918         int                     i;
 919         m = r_refdef.worldmodel;
 920
 921         Con_Print("Worldmodel textures :\n");
 922         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 923                 if(t->skin.base != r_texture_notexture)
 924                         Con_Printf("%s\n", t->name);
 925 }
 926
 927 #if 0
 928 static void gl_surf_start(void)
 929 {
 930 }
 931
 932 static void gl_surf_shutdown(void)
 933 {
 934 }
 935
 936 static void gl_surf_newmap(void)
 937 {
 938 }
 939 #endif
 940
 941 void GL_Surf_Init(void)
 942 {
 943
 944         Cvar_RegisterVariable(&r_ambient);
 945         Cvar_RegisterVariable(&r_drawportals);
 946         Cvar_RegisterVariable(&r_lockpvs);
 947         Cvar_RegisterVariable(&r_lockvisibility);
 948         Cvar_RegisterVariable(&r_useportalculling);
 949         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
 950         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
 951         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
 952
 953         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture);          // By [515]
 954         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures);                      // By [515]
 955
 956         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
 957 }
 958