src/clientmap.cpp

   1 /*
   2 Minetest-c55
   3 Copyright (C) 2010-2012 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "clientmap.h"
  21 #include "client.h"
  22 #include "mapblock_mesh.h"
  23 #include <IMaterialRenderer.h>
  24 #include <matrix4.h>
  25 #include "log.h"
  26 #include "mapsector.h"
  27 #include "main.h" // dout_client, g_settings
  28 #include "nodedef.h"
  29 #include "mapblock.h"
  30 #include "profiler.h"
  31 #include "settings.h"
  32 #include "util/mathconstants.h"
  33
  34 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
  35
  36 ClientMap::ClientMap(
  37                 Client *client,
  38                 IGameDef *gamedef,
  39                 MapDrawControl &control,
  40                 scene::ISceneNode* parent,
  41                 scene::ISceneManager* mgr,
  42                 s32 id
  43 ):
  44         Map(dout_client, gamedef),
  45         scene::ISceneNode(parent, mgr, id),
  46         m_client(client),
  47         m_control(control),
  48         m_camera_position(0,0,0),
  49         m_camera_direction(0,0,1),
  50         m_camera_fov(M_PI)
  51 {
  52         m_camera_mutex.Init();
  53         assert(m_camera_mutex.IsInitialized());
  54
  55         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
  56                         BS*1000000,BS*1000000,BS*1000000);
  57 }
  58
  59 ClientMap::~ClientMap()
  60 {
  61         /*JMutexAutoLock lock(mesh_mutex);
  62
  63         if(mesh != NULL)
  64         {
  65                 mesh->drop();
  66                 mesh = NULL;
  67         }*/
  68 }
  69
  70 MapSector * ClientMap::emergeSector(v2s16 p2d)
  71 {
  72         DSTACK(__FUNCTION_NAME);
  73         // Check that it doesn't exist already
  74         try{
  75                 return getSectorNoGenerate(p2d);
  76         }
  77         catch(InvalidPositionException &e)
  78         {
  79         }
  80
  81         // Create a sector
  82         ClientMapSector *sector = new ClientMapSector(this, p2d, m_gamedef);
  83
  84         {
  85                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  86                 m_sectors.insert(p2d, sector);
  87         }
  88
  89         return sector;
  90 }
  91
  92 #if 0
  93 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
  94 {
  95         DSTACK(__FUNCTION_NAME);
  96         ClientMapSector *sector = NULL;
  97
  98         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  99
 100         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
 101
 102         if(n != NULL)
 103         {
 104                 sector = (ClientMapSector*)n->getValue();
 105                 assert(sector->getId() == MAPSECTOR_CLIENT);
 106         }
 107         else
 108         {
 109                 sector = new ClientMapSector(this, p2d);
 110                 {
 111                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
 112                         m_sectors.insert(p2d, sector);
 113                 }
 114         }
 115
 116         sector->deSerialize(is);
 117 }
 118 #endif
 119
 120 void ClientMap::OnRegisterSceneNode()
 121 {
 122         if(IsVisible)
 123         {
 124                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
 125                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
 126         }
 127
 128         ISceneNode::OnRegisterSceneNode();
 129 }
 130
 131 static bool isOccluded(Map *map, v3s16 p0, v3s16 p1, float step, float stepfac,
 132                 float start_off, float end_off, u32 needed_count, INodeDefManager *nodemgr)
 133 {
 134         float d0 = (float)BS * p0.getDistanceFrom(p1);
 135         v3s16 u0 = p1 - p0;
 136         v3f uf = v3f(u0.X, u0.Y, u0.Z) * BS;
 137         uf.normalize();
 138         v3f p0f = v3f(p0.X, p0.Y, p0.Z) * BS;
 139         u32 count = 0;
 140         for(float s=start_off; s<d0+end_off; s+=step){
 141                 v3f pf = p0f + uf * s;
 142                 v3s16 p = floatToInt(pf, BS);
 143                 MapNode n = map->getNodeNoEx(p);
 144                 bool is_transparent = false;
 145                 const ContentFeatures &f = nodemgr->get(n);
 146                 if(f.solidness == 0)
 147                         is_transparent = (f.visual_solidness != 2);
 148                 else
 149                         is_transparent = (f.solidness != 2);
 150                 if(!is_transparent){
 151                         count++;
 152                         if(count >= needed_count)
 153                                 return true;
 154                 }
 155                 step *= stepfac;
 156         }
 157         return false;
 158 }
 159
 160 void ClientMap::updateDrawList(video::IVideoDriver* driver)
 161 {
 162         ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
 163         g_profiler->add("CM::updateDrawList() count", 1);
 164
 165         INodeDefManager *nodemgr = m_gamedef->ndef();
 166
 167         for(core::map<v3s16, MapBlock*>::Iterator
 168                         i = m_drawlist.getIterator();
 169                         i.atEnd() == false; i++)
 170         {
 171                 MapBlock *block = i.getNode()->getValue();
 172                 block->refDrop();
 173         }
 174         m_drawlist.clear();
 175
 176         m_camera_mutex.Lock();
 177         v3f camera_position = m_camera_position;
 178         v3f camera_direction = m_camera_direction;
 179         f32 camera_fov = m_camera_fov;
 180         m_camera_mutex.Unlock();
 181
 182         // Use a higher fov to accomodate faster camera movements.
 183         // Blocks are cropped better when they are drawn.
 184         // Or maybe they aren't? Well whatever.
 185         camera_fov *= 1.2;
 186
 187         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 188         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 189         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 190         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 191         // Take a fair amount as we will be dropping more out later
 192         // Umm... these additions are a bit strange but they are needed.
 193         v3s16 p_blocks_min(
 194                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 195                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 196                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 197         v3s16 p_blocks_max(
 198                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 199                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 200                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 201
 202         // Number of blocks in rendering range
 203         u32 blocks_in_range = 0;
 204         // Number of blocks occlusion culled
 205         u32 blocks_occlusion_culled = 0;
 206         // Number of blocks in rendering range but don't have a mesh
 207         u32 blocks_in_range_without_mesh = 0;
 208         // Blocks that had mesh that would have been drawn according to
 209         // rendering range (if max blocks limit didn't kick in)
 210         u32 blocks_would_have_drawn = 0;
 211         // Blocks that were drawn and had a mesh
 212         u32 blocks_drawn = 0;
 213         // Blocks which had a corresponding meshbuffer for this pass
 214         //u32 blocks_had_pass_meshbuf = 0;
 215         // Blocks from which stuff was actually drawn
 216         //u32 blocks_without_stuff = 0;
 217
 218         for(core::map<v2s16, MapSector*>::Iterator
 219                         si = m_sectors.getIterator();
 220                         si.atEnd() == false; si++)
 221         {
 222                 MapSector *sector = si.getNode()->getValue();
 223                 v2s16 sp = sector->getPos();
 224
 225                 if(m_control.range_all == false)
 226                 {
 227                         if(sp.X < p_blocks_min.X
 228                         || sp.X > p_blocks_max.X
 229                         || sp.Y < p_blocks_min.Z
 230                         || sp.Y > p_blocks_max.Z)
 231                                 continue;
 232                 }
 233
 234                 core::list< MapBlock * > sectorblocks;
 235                 sector->getBlocks(sectorblocks);
 236
 237                 /*
 238                         Loop through blocks in sector
 239                 */
 240
 241                 u32 sector_blocks_drawn = 0;
 242
 243                 core::list< MapBlock * >::Iterator i;
 244                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
 245                 {
 246                         MapBlock *block = *i;
 247
 248                         /*
 249                                 Compare block position to camera position, skip
 250                                 if not seen on display
 251                         */
 252
 253                         float range = 100000 * BS;
 254                         if(m_control.range_all == false)
 255                                 range = m_control.wanted_range * BS;
 256
 257                         float d = 0.0;
 258                         if(isBlockInSight(block->getPos(), camera_position,
 259                                         camera_direction, camera_fov,
 260                                         range, &d) == false)
 261                         {
 262                                 continue;
 263                         }
 264
 265                         // This is ugly (spherical distance limit?)
 266                         /*if(m_control.range_all == false &&
 267                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
 268                                 continue;*/
 269
 270                         blocks_in_range++;
 271
 272                         /*
 273                                 Ignore if mesh doesn't exist
 274                         */
 275                         {
 276                                 //JMutexAutoLock lock(block->mesh_mutex);
 277
 278                                 if(block->mesh == NULL){
 279                                         blocks_in_range_without_mesh++;
 280                                         continue;
 281                                 }
 282                         }
 283
 284                         /*
 285                                 Occlusion culling
 286                         */
 287
 288                         // No occlusion culling when free_move is on and camera is
 289                         // inside ground
 290                         bool occlusion_culling_enabled = true;
 291                         if(g_settings->getBool("free_move")){
 292                                 MapNode n = getNodeNoEx(cam_pos_nodes);
 293                                 if(n.getContent() == CONTENT_IGNORE ||
 294                                                 nodemgr->get(n).solidness == 2)
 295                                         occlusion_culling_enabled = false;
 296                         }
 297
 298                         v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
 299                         cpn += v3s16(MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2);
 300                         float step = BS*1;
 301                         float stepfac = 1.1;
 302                         float startoff = BS*1;
 303                         float endoff = -BS*MAP_BLOCKSIZE*1.42*1.42;
 304                         v3s16 spn = cam_pos_nodes + v3s16(0,0,0);
 305                         s16 bs2 = MAP_BLOCKSIZE/2 + 1;
 306                         u32 needed_count = 1;
 307                         if(
 308                                 occlusion_culling_enabled &&
 309                                 isOccluded(this, spn, cpn + v3s16(0,0,0),
 310                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 311                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,bs2),
 312                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 313                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,-bs2),
 314                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 315                                 isOccluded(this, spn, cpn + v3s16(bs2,-bs2,bs2),
 316                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 317                                 isOccluded(this, spn, cpn + v3s16(bs2,-bs2,-bs2),
 318                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 319                                 isOccluded(this, spn, cpn + v3s16(-bs2,bs2,bs2),
 320                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 321                                 isOccluded(this, spn, cpn + v3s16(-bs2,bs2,-bs2),
 322                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 323                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,bs2),
 324                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 325                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,-bs2),
 326                                         step, stepfac, startoff, endoff, needed_count, nodemgr)
 327                         )
 328                         {
 329                                 blocks_occlusion_culled++;
 330                                 continue;
 331                         }
 332
 333                         // This block is in range. Reset usage timer.
 334                         block->resetUsageTimer();
 335
 336                         // Limit block count in case of a sudden increase
 337                         blocks_would_have_drawn++;
 338                         if(blocks_drawn >= m_control.wanted_max_blocks
 339                                         && m_control.range_all == false
 340                                         && d > m_control.wanted_min_range * BS)
 341                                 continue;
 342
 343                         // Add to set
 344                         block->refGrab();
 345                         m_drawlist[block->getPos()] = block;
 346
 347                         sector_blocks_drawn++;
 348                         blocks_drawn++;
 349
 350                 } // foreach sectorblocks
 351
 352                 if(sector_blocks_drawn != 0)
 353                         m_last_drawn_sectors[sp] = true;
 354         }
 355
 356         g_profiler->avg("CM: blocks in range", blocks_in_range);
 357         g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
 358         if(blocks_in_range != 0)
 359                 g_profiler->avg("CM: blocks in range without mesh (frac)",
 360                                 (float)blocks_in_range_without_mesh/blocks_in_range);
 361         g_profiler->avg("CM: blocks drawn", blocks_drawn);
 362 }
 363
 364 struct MeshBufList
 365 {
 366         video::SMaterial m;
 367         core::list<scene::IMeshBuffer*> bufs;
 368 };
 369
 370 struct MeshBufListList
 371 {
 372         core::list<MeshBufList> lists;
 373
 374         void clear()
 375         {
 376                 lists.clear();
 377         }
 378
 379         void add(scene::IMeshBuffer *buf)
 380         {
 381                 for(core::list<MeshBufList>::Iterator i = lists.begin();
 382                                 i != lists.end(); i++){
 383                         MeshBufList &l = *i;
 384                         if(l.m == buf->getMaterial()){
 385                                 l.bufs.push_back(buf);
 386                                 return;
 387                         }
 388                 }
 389                 MeshBufList l;
 390                 l.m = buf->getMaterial();
 391                 l.bufs.push_back(buf);
 392                 lists.push_back(l);
 393         }
 394 };
 395
 396 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 397 {
 398         DSTACK(__FUNCTION_NAME);
 399
 400         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 401
 402         std::string prefix;
 403         if(pass == scene::ESNRP_SOLID)
 404                 prefix = "CM: solid: ";
 405         else
 406                 prefix = "CM: transparent: ";
 407
 408         /*
 409                 This is called two times per frame, reset on the non-transparent one
 410         */
 411         if(pass == scene::ESNRP_SOLID)
 412         {
 413                 m_last_drawn_sectors.clear();
 414         }
 415
 416         bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
 417         bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
 418         bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 419
 420         /*
 421                 Get time for measuring timeout.
 422
 423                 Measuring time is very useful for long delays when the
 424                 machine is swapping a lot.
 425         */
 426         int time1 = time(0);
 427
 428         /*
 429                 Get animation parameters
 430         */
 431         float animation_time = m_client->getAnimationTime();
 432         int crack = m_client->getCrackLevel();
 433         u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 434
 435         m_camera_mutex.Lock();
 436         v3f camera_position = m_camera_position;
 437         v3f camera_direction = m_camera_direction;
 438         f32 camera_fov = m_camera_fov;
 439         m_camera_mutex.Unlock();
 440
 441         /*
 442                 Get all blocks and draw all visible ones
 443         */
 444
 445         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 446
 447         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 448
 449         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 450         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 451
 452         // Take a fair amount as we will be dropping more out later
 453         // Umm... these additions are a bit strange but they are needed.
 454         v3s16 p_blocks_min(
 455                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 456                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 457                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 458         v3s16 p_blocks_max(
 459                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 460                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 461                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 462
 463         u32 vertex_count = 0;
 464         u32 meshbuffer_count = 0;
 465
 466         // For limiting number of mesh animations per frame
 467         u32 mesh_animate_count = 0;
 468         u32 mesh_animate_count_far = 0;
 469
 470         // Blocks that had mesh that would have been drawn according to
 471         // rendering range (if max blocks limit didn't kick in)
 472         u32 blocks_would_have_drawn = 0;
 473         // Blocks that were drawn and had a mesh
 474         u32 blocks_drawn = 0;
 475         // Blocks which had a corresponding meshbuffer for this pass
 476         u32 blocks_had_pass_meshbuf = 0;
 477         // Blocks from which stuff was actually drawn
 478         u32 blocks_without_stuff = 0;
 479
 480         /*
 481                 Draw the selected MapBlocks
 482         */
 483
 484         {
 485         ScopeProfiler sp(g_profiler, prefix+"drawing blocks", SPT_AVG);
 486
 487         MeshBufListList drawbufs;
 488
 489         for(core::map<v3s16, MapBlock*>::Iterator
 490                         i = m_drawlist.getIterator();
 491                         i.atEnd() == false; i++)
 492         {
 493                 MapBlock *block = i.getNode()->getValue();
 494
 495                 // If the mesh of the block happened to get deleted, ignore it
 496                 if(block->mesh == NULL)
 497                         continue;
 498
 499                 float d = 0.0;
 500                 if(isBlockInSight(block->getPos(), camera_position,
 501                                 camera_direction, camera_fov,
 502                                 100000*BS, &d) == false)
 503                 {
 504                         continue;
 505                 }
 506
 507                 // Mesh animation
 508                 {
 509                         //JMutexAutoLock lock(block->mesh_mutex);
 510                         MapBlockMesh *mapBlockMesh = block->mesh;
 511                         assert(mapBlockMesh);
 512                         // Pretty random but this should work somewhat nicely
 513                         bool faraway = d >= BS*50;
 514                         //bool faraway = d >= m_control.wanted_range * BS;
 515                         if(mapBlockMesh->isAnimationForced() ||
 516                                         !faraway ||
 517                                         mesh_animate_count_far < (m_control.range_all ? 200 : 50))
 518                         {
 519                                 bool animated = mapBlockMesh->animate(
 520                                                 faraway,
 521                                                 animation_time,
 522                                                 crack,
 523                                                 daynight_ratio);
 524                                 if(animated)
 525                                         mesh_animate_count++;
 526                                 if(animated && faraway)
 527                                         mesh_animate_count_far++;
 528                         }
 529                         else
 530                         {
 531                                 mapBlockMesh->decreaseAnimationForceTimer();
 532                         }
 533                 }
 534
 535                 /*
 536                         Get the meshbuffers of the block
 537                 */
 538                 {
 539                         //JMutexAutoLock lock(block->mesh_mutex);
 540
 541                         MapBlockMesh *mapBlockMesh = block->mesh;
 542                         assert(mapBlockMesh);
 543
 544                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 545                         assert(mesh);
 546
 547                         u32 c = mesh->getMeshBufferCount();
 548                         for(u32 i=0; i<c; i++)
 549                         {
 550                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 551
 552                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
 553                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
 554                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 555
 556                                 const video::SMaterial& material = buf->getMaterial();
 557                                 video::IMaterialRenderer* rnd =
 558                                                 driver->getMaterialRenderer(material.MaterialType);
 559                                 bool transparent = (rnd && rnd->isTransparent());
 560                                 if(transparent == is_transparent_pass)
 561                                 {
 562                                         if(buf->getVertexCount() == 0)
 563                                                 errorstream<<"Block ["<<analyze_block(block)
 564                                                                 <<"] contains an empty meshbuf"<<std::endl;
 565                                         drawbufs.add(buf);
 566                                 }
 567                         }
 568                 }
 569         }
 570
 571         core::list<MeshBufList> &lists = drawbufs.lists;
 572
 573         int timecheck_counter = 0;
 574         for(core::list<MeshBufList>::Iterator i = lists.begin();
 575                         i != lists.end(); i++)
 576         {
 577                 {
 578                         timecheck_counter++;
 579                         if(timecheck_counter > 50)
 580                         {
 581                                 timecheck_counter = 0;
 582                                 int time2 = time(0);
 583                                 if(time2 > time1 + 4)
 584                                 {
 585                                         infostream<<"ClientMap::renderMap(): "
 586                                                 "Rendering takes ages, returning."
 587                                                 <<std::endl;
 588                                         return;
 589                                 }
 590                         }
 591                 }
 592
 593                 MeshBufList &list = *i;
 594
 595                 driver->setMaterial(list.m);
 596
 597                 for(core::list<scene::IMeshBuffer*>::Iterator j = list.bufs.begin();
 598                                 j != list.bufs.end(); j++)
 599                 {
 600                         scene::IMeshBuffer *buf = *j;
 601                         driver->drawMeshBuffer(buf);
 602                         vertex_count += buf->getVertexCount();
 603                         meshbuffer_count++;
 604                 }
 605 #if 0
 606                 /*
 607                         Draw the faces of the block
 608                 */
 609                 {
 610                         //JMutexAutoLock lock(block->mesh_mutex);
 611
 612                         MapBlockMesh *mapBlockMesh = block->mesh;
 613                         assert(mapBlockMesh);
 614
 615                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 616                         assert(mesh);
 617
 618                         u32 c = mesh->getMeshBufferCount();
 619                         bool stuff_actually_drawn = false;
 620                         for(u32 i=0; i<c; i++)
 621                         {
 622                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 623                                 const video::SMaterial& material = buf->getMaterial();
 624                                 video::IMaterialRenderer* rnd =
 625                                                 driver->getMaterialRenderer(material.MaterialType);
 626                                 bool transparent = (rnd && rnd->isTransparent());
 627                                 // Render transparent on transparent pass and likewise.
 628                                 if(transparent == is_transparent_pass)
 629                                 {
 630                                         if(buf->getVertexCount() == 0)
 631                                                 errorstream<<"Block ["<<analyze_block(block)
 632                                                                 <<"] contains an empty meshbuf"<<std::endl;
 633                                         /*
 634                                                 This *shouldn't* hurt too much because Irrlicht
 635                                                 doesn't change opengl textures if the old
 636                                                 material has the same texture.
 637                                         */
 638                                         driver->setMaterial(buf->getMaterial());
 639                                         driver->drawMeshBuffer(buf);
 640                                         vertex_count += buf->getVertexCount();
 641                                         meshbuffer_count++;
 642                                         stuff_actually_drawn = true;
 643                                 }
 644                         }
 645                         if(stuff_actually_drawn)
 646                                 blocks_had_pass_meshbuf++;
 647                         else
 648                                 blocks_without_stuff++;
 649                 }
 650 #endif
 651         }
 652         } // ScopeProfiler
 653
 654         // Log only on solid pass because values are the same
 655         if(pass == scene::ESNRP_SOLID){
 656                 g_profiler->avg("CM: animated meshes", mesh_animate_count);
 657                 g_profiler->avg("CM: animated meshes (far)", mesh_animate_count_far);
 658         }
 659
 660         g_profiler->avg(prefix+"vertices drawn", vertex_count);
 661         if(blocks_had_pass_meshbuf != 0)
 662                 g_profiler->avg(prefix+"meshbuffers per block",
 663                                 (float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
 664         if(blocks_drawn != 0)
 665                 g_profiler->avg(prefix+"empty blocks (frac)",
 666                                 (float)blocks_without_stuff / blocks_drawn);
 667
 668         m_control.blocks_drawn = blocks_drawn;
 669         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
 670
 671         /*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
 672                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
 673 }
 674
 675 static bool getVisibleBrightness(Map *map, v3f p0, v3f dir, float step,
 676                 float step_multiplier, float start_distance, float end_distance,
 677                 INodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 678                 int *result, bool *sunlight_seen)
 679 {
 680         int brightness_sum = 0;
 681         int brightness_count = 0;
 682         float distance = start_distance;
 683         dir.normalize();
 684         v3f pf = p0;
 685         pf += dir * distance;
 686         int noncount = 0;
 687         bool nonlight_seen = false;
 688         bool allow_allowing_non_sunlight_propagates = false;
 689         bool allow_non_sunlight_propagates = false;
 690         // Check content nearly at camera position
 691         {
 692                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 693                 MapNode n = map->getNodeNoEx(p);
 694                 if(ndef->get(n).param_type == CPT_LIGHT &&
 695                                 !ndef->get(n).sunlight_propagates)
 696                         allow_allowing_non_sunlight_propagates = true;
 697         }
 698         // If would start at CONTENT_IGNORE, start closer
 699         {
 700                 v3s16 p = floatToInt(pf, BS);
 701                 MapNode n = map->getNodeNoEx(p);
 702                 if(n.getContent() == CONTENT_IGNORE){
 703                         float newd = 2*BS;
 704                         pf = p0 + dir * 2*newd;
 705                         distance = newd;
 706                         sunlight_min_d = 0;
 707                 }
 708         }
 709         for(int i=0; distance < end_distance; i++){
 710                 pf += dir * step;
 711                 distance += step;
 712                 step *= step_multiplier;
 713
 714                 v3s16 p = floatToInt(pf, BS);
 715                 MapNode n = map->getNodeNoEx(p);
 716                 if(allow_allowing_non_sunlight_propagates && i == 0 &&
 717                                 ndef->get(n).param_type == CPT_LIGHT &&
 718                                 !ndef->get(n).sunlight_propagates){
 719                         allow_non_sunlight_propagates = true;
 720                 }
 721                 if(ndef->get(n).param_type != CPT_LIGHT ||
 722                                 (!ndef->get(n).sunlight_propagates &&
 723                                         !allow_non_sunlight_propagates)){
 724                         nonlight_seen = true;
 725                         noncount++;
 726                         if(noncount >= 4)
 727                                 break;
 728                         continue;
 729                 }
 730                 if(distance >= sunlight_min_d && *sunlight_seen == false
 731                                 && nonlight_seen == false)
 732                         if(n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 733                                 *sunlight_seen = true;
 734                 noncount = 0;
 735                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 736                 brightness_count++;
 737         }
 738         *result = 0;
 739         if(brightness_count == 0)
 740                 return false;
 741         *result = brightness_sum / brightness_count;
 742         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 743                         <<(*result)<<std::endl;*/
 744         return true;
 745 }
 746
 747 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 748                 int oldvalue, bool *sunlight_seen_result)
 749 {
 750         const bool debugprint = false;
 751         INodeDefManager *ndef = m_gamedef->ndef();
 752         static v3f z_directions[50] = {
 753                 v3f(-100, 0, 0)
 754         };
 755         static f32 z_offsets[sizeof(z_directions)/sizeof(*z_directions)] = {
 756                 -1000,
 757         };
 758         if(z_directions[0].X < -99){
 759                 for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 760                         z_directions[i] = v3f(
 761                                 0.01 * myrand_range(-100, 100),
 762                                 1.0,
 763                                 0.01 * myrand_range(-100, 100)
 764                         );
 765                         z_offsets[i] = 0.01 * myrand_range(0,100);
 766                 }
 767         }
 768         if(debugprint)
 769                 std::cerr<<"In goes "<<PP(m_camera_direction)<<", out comes ";
 770         int sunlight_seen_count = 0;
 771         float sunlight_min_d = max_d*0.8;
 772         if(sunlight_min_d > 35*BS)
 773                 sunlight_min_d = 35*BS;
 774         core::array<int> values;
 775         for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 776                 v3f z_dir = z_directions[i];
 777                 z_dir.normalize();
 778                 core::CMatrix4<f32> a;
 779                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 780                 v3f dir = m_camera_direction;
 781                 a.rotateVect(dir);
 782                 int br = 0;
 783                 float step = BS*1.5;
 784                 if(max_d > 35*BS)
 785                         step = max_d / 35 * 1.5;
 786                 float off = step * z_offsets[i];
 787                 bool sunlight_seen_now = false;
 788                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 789                                 step, 1.0, max_d*0.6+off, max_d, ndef, daylight_factor,
 790                                 sunlight_min_d,
 791                                 &br, &sunlight_seen_now);
 792                 if(sunlight_seen_now)
 793                         sunlight_seen_count++;
 794                 if(!ok)
 795                         continue;
 796                 values.push_back(br);
 797                 // Don't try too much if being in the sun is clear
 798                 if(sunlight_seen_count >= 20)
 799                         break;
 800         }
 801         int brightness_sum = 0;
 802         int brightness_count = 0;
 803         values.sort();
 804         u32 num_values_to_use = values.size();
 805         if(num_values_to_use >= 10)
 806                 num_values_to_use -= num_values_to_use/2;
 807         else if(num_values_to_use >= 7)
 808                 num_values_to_use -= num_values_to_use/3;
 809         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 810         if(debugprint){
 811                 for(u32 i=0; i < first_value_i; i++)
 812                         std::cerr<<values[i]<<" ";
 813                 std::cerr<<"[";
 814         }
 815         for(u32 i=first_value_i; i < first_value_i+num_values_to_use; i++){
 816                 if(debugprint)
 817                         std::cerr<<values[i]<<" ";
 818                 brightness_sum += values[i];
 819                 brightness_count++;
 820         }
 821         if(debugprint){
 822                 std::cerr<<"]";
 823                 for(u32 i=first_value_i+num_values_to_use; i < values.size(); i++)
 824                         std::cerr<<values[i]<<" ";
 825         }
 826         int ret = 0;
 827         if(brightness_count == 0){
 828                 MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
 829                 if(ndef->get(n).param_type == CPT_LIGHT){
 830                         ret = decode_light(n.getLightBlend(daylight_factor, ndef));
 831                 } else {
 832                         ret = oldvalue;
 833                         //ret = blend_light(255, 0, daylight_factor);
 834                 }
 835         } else {
 836                 /*float pre = (float)brightness_sum / (float)brightness_count;
 837                 float tmp = pre;
 838                 const float d = 0.2;
 839                 pre *= 1.0 + d*2;
 840                 pre -= tmp * d;
 841                 int preint = pre;
 842                 ret = MYMAX(0, MYMIN(255, preint));*/
 843                 ret = brightness_sum / brightness_count;
 844         }
 845         if(debugprint)
 846                 std::cerr<<"Result: "<<ret<<" sunlight_seen_count="
 847                                 <<sunlight_seen_count<<std::endl;
 848         *sunlight_seen_result = (sunlight_seen_count > 0);
 849         return ret;
 850 }
 851
 852 void ClientMap::renderPostFx()
 853 {
 854         INodeDefManager *nodemgr = m_gamedef->ndef();
 855
 856         // Sadly ISceneManager has no "post effects" render pass, in that case we
 857         // could just register for that and handle it in renderMap().
 858
 859         m_camera_mutex.Lock();
 860         v3f camera_position = m_camera_position;
 861         m_camera_mutex.Unlock();
 862
 863         MapNode n = getNodeNoEx(floatToInt(camera_position, BS));
 864
 865         // - If the player is in a solid node, make everything black.
 866         // - If the player is in liquid, draw a semi-transparent overlay.
 867         const ContentFeatures& features = nodemgr->get(n);
 868         video::SColor post_effect_color = features.post_effect_color;
 869         if(features.solidness == 2 && g_settings->getBool("free_move") == false)
 870         {
 871                 post_effect_color = video::SColor(255, 0, 0, 0);
 872         }
 873         if (post_effect_color.getAlpha() != 0)
 874         {
 875                 // Draw a full-screen rectangle
 876                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 877                 v2u32 ss = driver->getScreenSize();
 878                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 879                 driver->draw2DRectangle(post_effect_color, rect);
 880         }
 881 }
 882
 883 void ClientMap::PrintInfo(std::ostream &out)
 884 {
 885         out<<"ClientMap: ";
 886 }
 887
 888