src/clientmap.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 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 "camera.h" // CameraModes
  33 #include "util/mathconstants.h"
  34 #include <algorithm>
  35
  36 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
  37
  38 ClientMap::ClientMap(
  39                 Client *client,
  40                 IGameDef *gamedef,
  41                 MapDrawControl &control,
  42                 scene::ISceneNode* parent,
  43                 scene::ISceneManager* mgr,
  44                 s32 id
  45 ):
  46         Map(dout_client, gamedef),
  47         scene::ISceneNode(parent, mgr, id),
  48         m_client(client),
  49         m_control(control),
  50         m_camera_position(0,0,0),
  51         m_camera_direction(0,0,1),
  52         m_camera_fov(M_PI)
  53 {
  54         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
  55                         BS*1000000,BS*1000000,BS*1000000);
  56 }
  57
  58 ClientMap::~ClientMap()
  59 {
  60         /*JMutexAutoLock lock(mesh_mutex);
  61
  62         if(mesh != NULL)
  63         {
  64                 mesh->drop();
  65                 mesh = NULL;
  66         }*/
  67 }
  68
  69 MapSector * ClientMap::emergeSector(v2s16 p2d)
  70 {
  71         DSTACK(__FUNCTION_NAME);
  72         // Check that it doesn't exist already
  73         try{
  74                 return getSectorNoGenerate(p2d);
  75         }
  76         catch(InvalidPositionException &e)
  77         {
  78         }
  79
  80         // Create a sector
  81         ClientMapSector *sector = new ClientMapSector(this, p2d, m_gamedef);
  82
  83         {
  84                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  85                 m_sectors[p2d] = sector;
  86         }
  87
  88         return sector;
  89 }
  90
  91 #if 0
  92 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
  93 {
  94         DSTACK(__FUNCTION_NAME);
  95         ClientMapSector *sector = NULL;
  96
  97         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  98
  99         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
 100
 101         if(n != NULL)
 102         {
 103                 sector = (ClientMapSector*)n->getValue();
 104                 assert(sector->getId() == MAPSECTOR_CLIENT);
 105         }
 106         else
 107         {
 108                 sector = new ClientMapSector(this, p2d);
 109                 {
 110                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
 111                         m_sectors.insert(p2d, sector);
 112                 }
 113         }
 114
 115         sector->deSerialize(is);
 116 }
 117 #endif
 118
 119 void ClientMap::OnRegisterSceneNode()
 120 {
 121         if(IsVisible)
 122         {
 123                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
 124                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
 125         }
 126
 127         ISceneNode::OnRegisterSceneNode();
 128 }
 129
 130 static bool isOccluded(Map *map, v3s16 p0, v3s16 p1, float step, float stepfac,
 131                 float start_off, float end_off, u32 needed_count, INodeDefManager *nodemgr)
 132 {
 133         float d0 = (float)BS * p0.getDistanceFrom(p1);
 134         v3s16 u0 = p1 - p0;
 135         v3f uf = v3f(u0.X, u0.Y, u0.Z) * BS;
 136         uf.normalize();
 137         v3f p0f = v3f(p0.X, p0.Y, p0.Z) * BS;
 138         u32 count = 0;
 139         for(float s=start_off; s<d0+end_off; s+=step){
 140                 v3f pf = p0f + uf * s;
 141                 v3s16 p = floatToInt(pf, BS);
 142                 MapNode n = map->getNodeNoEx(p);
 143                 bool is_transparent = false;
 144                 const ContentFeatures &f = nodemgr->get(n);
 145                 if(f.solidness == 0)
 146                         is_transparent = (f.visual_solidness != 2);
 147                 else
 148                         is_transparent = (f.solidness != 2);
 149                 if(!is_transparent){
 150                         count++;
 151                         if(count >= needed_count)
 152                                 return true;
 153                 }
 154                 step *= stepfac;
 155         }
 156         return false;
 157 }
 158
 159 void ClientMap::updateDrawList(video::IVideoDriver* driver)
 160 {
 161         ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
 162         g_profiler->add("CM::updateDrawList() count", 1);
 163
 164         INodeDefManager *nodemgr = m_gamedef->ndef();
 165
 166         for(std::map<v3s16, MapBlock*>::iterator
 167                         i = m_drawlist.begin();
 168                         i != m_drawlist.end(); ++i)
 169         {
 170                 MapBlock *block = i->second;
 171                 block->refDrop();
 172         }
 173         m_drawlist.clear();
 174
 175         m_camera_mutex.Lock();
 176         v3f camera_position = m_camera_position;
 177         v3f camera_direction = m_camera_direction;
 178         f32 camera_fov = m_camera_fov;
 179         v3s16 camera_offset = m_camera_offset;
 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         // Distance to farthest drawn block
 218         float farthest_drawn = 0;
 219
 220         for(std::map<v2s16, MapSector*>::iterator
 221                         si = m_sectors.begin();
 222                         si != m_sectors.end(); ++si)
 223         {
 224                 MapSector *sector = si->second;
 225                 v2s16 sp = sector->getPos();
 226
 227                 if(m_control.range_all == false)
 228                 {
 229                         if(sp.X < p_blocks_min.X
 230                         || sp.X > p_blocks_max.X
 231                         || sp.Y < p_blocks_min.Z
 232                         || sp.Y > p_blocks_max.Z)
 233                                 continue;
 234                 }
 235
 236                 std::list< MapBlock * > sectorblocks;
 237                 sector->getBlocks(sectorblocks);
 238
 239                 /*
 240                         Loop through blocks in sector
 241                 */
 242
 243                 u32 sector_blocks_drawn = 0;
 244
 245                 std::list< MapBlock * >::iterator i;
 246                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
 247                 {
 248                         MapBlock *block = *i;
 249
 250                         /*
 251                                 Compare block position to camera position, skip
 252                                 if not seen on display
 253                         */
 254
 255                         if (block->mesh != NULL)
 256                                 block->mesh->updateCameraOffset(m_camera_offset);
 257
 258                         float range = 100000 * BS;
 259                         if(m_control.range_all == false)
 260                                 range = m_control.wanted_range * BS;
 261
 262                         float d = 0.0;
 263                         if(isBlockInSight(block->getPos(), camera_position,
 264                                         camera_direction, camera_fov,
 265                                         range, &d) == false)
 266                         {
 267                                 continue;
 268                         }
 269
 270                         // This is ugly (spherical distance limit?)
 271                         /*if(m_control.range_all == false &&
 272                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
 273                                 continue;*/
 274
 275                         blocks_in_range++;
 276
 277                         /*
 278                                 Ignore if mesh doesn't exist
 279                         */
 280                         {
 281                                 //JMutexAutoLock lock(block->mesh_mutex);
 282
 283                                 if(block->mesh == NULL){
 284                                         blocks_in_range_without_mesh++;
 285                                         continue;
 286                                 }
 287                         }
 288
 289                         /*
 290                                 Occlusion culling
 291                         */
 292
 293                         // No occlusion culling when free_move is on and camera is
 294                         // inside ground
 295                         bool occlusion_culling_enabled = true;
 296                         if(g_settings->getBool("free_move")){
 297                                 MapNode n = getNodeNoEx(cam_pos_nodes);
 298                                 if(n.getContent() == CONTENT_IGNORE ||
 299                                                 nodemgr->get(n).solidness == 2)
 300                                         occlusion_culling_enabled = false;
 301                         }
 302
 303                         v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
 304                         cpn += v3s16(MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2);
 305                         float step = BS*1;
 306                         float stepfac = 1.1;
 307                         float startoff = BS*1;
 308                         float endoff = -BS*MAP_BLOCKSIZE*1.42*1.42;
 309                         v3s16 spn = cam_pos_nodes + v3s16(0,0,0);
 310                         s16 bs2 = MAP_BLOCKSIZE/2 + 1;
 311                         u32 needed_count = 1;
 312                         if(
 313                                 occlusion_culling_enabled &&
 314                                 isOccluded(this, spn, cpn + v3s16(0,0,0),
 315                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 316                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,bs2),
 317                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 318                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,-bs2),
 319                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 320                                 isOccluded(this, spn, cpn + v3s16(bs2,-bs2,bs2),
 321                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 322                                 isOccluded(this, spn, cpn + v3s16(bs2,-bs2,-bs2),
 323                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 324                                 isOccluded(this, spn, cpn + v3s16(-bs2,bs2,bs2),
 325                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 326                                 isOccluded(this, spn, cpn + v3s16(-bs2,bs2,-bs2),
 327                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 328                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,bs2),
 329                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 330                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,-bs2),
 331                                         step, stepfac, startoff, endoff, needed_count, nodemgr)
 332                         )
 333                         {
 334                                 blocks_occlusion_culled++;
 335                                 continue;
 336                         }
 337
 338                         // This block is in range. Reset usage timer.
 339                         block->resetUsageTimer();
 340
 341                         // Limit block count in case of a sudden increase
 342                         blocks_would_have_drawn++;
 343                         if(blocks_drawn >= m_control.wanted_max_blocks
 344                                         && m_control.range_all == false
 345                                         && d > m_control.wanted_min_range * BS)
 346                                 continue;
 347
 348                         // Add to set
 349                         block->refGrab();
 350                         m_drawlist[block->getPos()] = block;
 351
 352                         sector_blocks_drawn++;
 353                         blocks_drawn++;
 354                         if(d/BS > farthest_drawn)
 355                                 farthest_drawn = d/BS;
 356
 357                 } // foreach sectorblocks
 358
 359                 if(sector_blocks_drawn != 0)
 360                         m_last_drawn_sectors.insert(sp);
 361         }
 362
 363         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
 364         m_control.blocks_drawn = blocks_drawn;
 365         m_control.farthest_drawn = farthest_drawn;
 366
 367         g_profiler->avg("CM: blocks in range", blocks_in_range);
 368         g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
 369         if(blocks_in_range != 0)
 370                 g_profiler->avg("CM: blocks in range without mesh (frac)",
 371                                 (float)blocks_in_range_without_mesh/blocks_in_range);
 372         g_profiler->avg("CM: blocks drawn", blocks_drawn);
 373         g_profiler->avg("CM: farthest drawn", farthest_drawn);
 374         g_profiler->avg("CM: wanted max blocks", m_control.wanted_max_blocks);
 375 }
 376
 377 struct MeshBufList
 378 {
 379         video::SMaterial m;
 380         std::list<scene::IMeshBuffer*> bufs;
 381 };
 382
 383 struct MeshBufListList
 384 {
 385         std::list<MeshBufList> lists;
 386
 387         void clear()
 388         {
 389                 lists.clear();
 390         }
 391
 392         void add(scene::IMeshBuffer *buf)
 393         {
 394                 for(std::list<MeshBufList>::iterator i = lists.begin();
 395                                 i != lists.end(); ++i){
 396                         MeshBufList &l = *i;
 397                         if(l.m == buf->getMaterial()){
 398                                 l.bufs.push_back(buf);
 399                                 return;
 400                         }
 401                 }
 402                 MeshBufList l;
 403                 l.m = buf->getMaterial();
 404                 l.bufs.push_back(buf);
 405                 lists.push_back(l);
 406         }
 407 };
 408
 409 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 410 {
 411         DSTACK(__FUNCTION_NAME);
 412
 413         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 414
 415         std::string prefix;
 416         if(pass == scene::ESNRP_SOLID)
 417                 prefix = "CM: solid: ";
 418         else
 419                 prefix = "CM: transparent: ";
 420
 421         /*
 422                 This is called two times per frame, reset on the non-transparent one
 423         */
 424         if(pass == scene::ESNRP_SOLID)
 425         {
 426                 m_last_drawn_sectors.clear();
 427         }
 428
 429         bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
 430         bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
 431         bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 432
 433         /*
 434                 Get time for measuring timeout.
 435
 436                 Measuring time is very useful for long delays when the
 437                 machine is swapping a lot.
 438         */
 439         int time1 = time(0);
 440
 441         /*
 442                 Get animation parameters
 443         */
 444         float animation_time = m_client->getAnimationTime();
 445         int crack = m_client->getCrackLevel();
 446         u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 447
 448         m_camera_mutex.Lock();
 449         v3f camera_position = m_camera_position;
 450         v3f camera_direction = m_camera_direction;
 451         f32 camera_fov = m_camera_fov;
 452         m_camera_mutex.Unlock();
 453
 454         /*
 455                 Get all blocks and draw all visible ones
 456         */
 457
 458         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 459
 460         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 461
 462         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 463         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 464
 465         // Take a fair amount as we will be dropping more out later
 466         // Umm... these additions are a bit strange but they are needed.
 467         v3s16 p_blocks_min(
 468                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 469                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 470                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 471         v3s16 p_blocks_max(
 472                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 473                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 474                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 475
 476         u32 vertex_count = 0;
 477         u32 meshbuffer_count = 0;
 478
 479         // For limiting number of mesh animations per frame
 480         u32 mesh_animate_count = 0;
 481         u32 mesh_animate_count_far = 0;
 482
 483         // Blocks that were drawn and had a mesh
 484         u32 blocks_drawn = 0;
 485         // Blocks which had a corresponding meshbuffer for this pass
 486         u32 blocks_had_pass_meshbuf = 0;
 487         // Blocks from which stuff was actually drawn
 488         u32 blocks_without_stuff = 0;
 489
 490         /*
 491                 Draw the selected MapBlocks
 492         */
 493
 494         {
 495         ScopeProfiler sp(g_profiler, prefix+"drawing blocks", SPT_AVG);
 496
 497         MeshBufListList drawbufs;
 498
 499         for(std::map<v3s16, MapBlock*>::iterator
 500                         i = m_drawlist.begin();
 501                         i != m_drawlist.end(); ++i)
 502         {
 503                 MapBlock *block = i->second;
 504
 505                 // If the mesh of the block happened to get deleted, ignore it
 506                 if(block->mesh == NULL)
 507                         continue;
 508
 509                 float d = 0.0;
 510                 if(isBlockInSight(block->getPos(), camera_position,
 511                                 camera_direction, camera_fov,
 512                                 100000*BS, &d) == false)
 513                 {
 514                         continue;
 515                 }
 516
 517                 // Mesh animation
 518                 {
 519                         //JMutexAutoLock lock(block->mesh_mutex);
 520                         MapBlockMesh *mapBlockMesh = block->mesh;
 521                         assert(mapBlockMesh);
 522                         // Pretty random but this should work somewhat nicely
 523                         bool faraway = d >= BS*50;
 524                         //bool faraway = d >= m_control.wanted_range * BS;
 525                         if(mapBlockMesh->isAnimationForced() ||
 526                                         !faraway ||
 527                                         mesh_animate_count_far < (m_control.range_all ? 200 : 50))
 528                         {
 529                                 bool animated = mapBlockMesh->animate(
 530                                                 faraway,
 531                                                 animation_time,
 532                                                 crack,
 533                                                 daynight_ratio);
 534                                 if(animated)
 535                                         mesh_animate_count++;
 536                                 if(animated && faraway)
 537                                         mesh_animate_count_far++;
 538                         }
 539                         else
 540                         {
 541                                 mapBlockMesh->decreaseAnimationForceTimer();
 542                         }
 543                 }
 544
 545                 /*
 546                         Get the meshbuffers of the block
 547                 */
 548                 {
 549                         //JMutexAutoLock lock(block->mesh_mutex);
 550
 551                         MapBlockMesh *mapBlockMesh = block->mesh;
 552                         assert(mapBlockMesh);
 553
 554                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 555                         assert(mesh);
 556
 557                         u32 c = mesh->getMeshBufferCount();
 558                         for(u32 i=0; i<c; i++)
 559                         {
 560                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 561
 562                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
 563                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
 564                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 565
 566                                 const video::SMaterial& material = buf->getMaterial();
 567                                 video::IMaterialRenderer* rnd =
 568                                                 driver->getMaterialRenderer(material.MaterialType);
 569                                 bool transparent = (rnd && rnd->isTransparent());
 570                                 if(transparent == is_transparent_pass)
 571                                 {
 572                                         if(buf->getVertexCount() == 0)
 573                                                 errorstream<<"Block ["<<analyze_block(block)
 574                                                                 <<"] contains an empty meshbuf"<<std::endl;
 575                                         drawbufs.add(buf);
 576                                 }
 577                         }
 578                 }
 579         }
 580
 581         std::list<MeshBufList> &lists = drawbufs.lists;
 582
 583         int timecheck_counter = 0;
 584         for(std::list<MeshBufList>::iterator i = lists.begin();
 585                         i != lists.end(); ++i)
 586         {
 587                 {
 588                         timecheck_counter++;
 589                         if(timecheck_counter > 50)
 590                         {
 591                                 timecheck_counter = 0;
 592                                 int time2 = time(0);
 593                                 if(time2 > time1 + 4)
 594                                 {
 595                                         infostream<<"ClientMap::renderMap(): "
 596                                                 "Rendering takes ages, returning."
 597                                                 <<std::endl;
 598                                         return;
 599                                 }
 600                         }
 601                 }
 602
 603                 MeshBufList &list = *i;
 604
 605                 driver->setMaterial(list.m);
 606
 607                 for(std::list<scene::IMeshBuffer*>::iterator j = list.bufs.begin();
 608                                 j != list.bufs.end(); ++j)
 609                 {
 610                         scene::IMeshBuffer *buf = *j;
 611                         driver->drawMeshBuffer(buf);
 612                         vertex_count += buf->getVertexCount();
 613                         meshbuffer_count++;
 614                 }
 615 #if 0
 616                 /*
 617                         Draw the faces of the block
 618                 */
 619                 {
 620                         //JMutexAutoLock lock(block->mesh_mutex);
 621
 622                         MapBlockMesh *mapBlockMesh = block->mesh;
 623                         assert(mapBlockMesh);
 624
 625                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 626                         assert(mesh);
 627
 628                         u32 c = mesh->getMeshBufferCount();
 629                         bool stuff_actually_drawn = false;
 630                         for(u32 i=0; i<c; i++)
 631                         {
 632                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 633                                 const video::SMaterial& material = buf->getMaterial();
 634                                 video::IMaterialRenderer* rnd =
 635                                                 driver->getMaterialRenderer(material.MaterialType);
 636                                 bool transparent = (rnd && rnd->isTransparent());
 637                                 // Render transparent on transparent pass and likewise.
 638                                 if(transparent == is_transparent_pass)
 639                                 {
 640                                         if(buf->getVertexCount() == 0)
 641                                                 errorstream<<"Block ["<<analyze_block(block)
 642                                                                 <<"] contains an empty meshbuf"<<std::endl;
 643                                         /*
 644                                                 This *shouldn't* hurt too much because Irrlicht
 645                                                 doesn't change opengl textures if the old
 646                                                 material has the same texture.
 647                                         */
 648                                         driver->setMaterial(buf->getMaterial());
 649                                         driver->drawMeshBuffer(buf);
 650                                         vertex_count += buf->getVertexCount();
 651                                         meshbuffer_count++;
 652                                         stuff_actually_drawn = true;
 653                                 }
 654                         }
 655                         if(stuff_actually_drawn)
 656                                 blocks_had_pass_meshbuf++;
 657                         else
 658                                 blocks_without_stuff++;
 659                 }
 660 #endif
 661         }
 662         } // ScopeProfiler
 663
 664         // Log only on solid pass because values are the same
 665         if(pass == scene::ESNRP_SOLID){
 666                 g_profiler->avg("CM: animated meshes", mesh_animate_count);
 667                 g_profiler->avg("CM: animated meshes (far)", mesh_animate_count_far);
 668         }
 669
 670         g_profiler->avg(prefix+"vertices drawn", vertex_count);
 671         if(blocks_had_pass_meshbuf != 0)
 672                 g_profiler->avg(prefix+"meshbuffers per block",
 673                                 (float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
 674         if(blocks_drawn != 0)
 675                 g_profiler->avg(prefix+"empty blocks (frac)",
 676                                 (float)blocks_without_stuff / blocks_drawn);
 677
 678         /*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
 679                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
 680 }
 681
 682 static bool getVisibleBrightness(Map *map, v3f p0, v3f dir, float step,
 683                 float step_multiplier, float start_distance, float end_distance,
 684                 INodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 685                 int *result, bool *sunlight_seen)
 686 {
 687         int brightness_sum = 0;
 688         int brightness_count = 0;
 689         float distance = start_distance;
 690         dir.normalize();
 691         v3f pf = p0;
 692         pf += dir * distance;
 693         int noncount = 0;
 694         bool nonlight_seen = false;
 695         bool allow_allowing_non_sunlight_propagates = false;
 696         bool allow_non_sunlight_propagates = false;
 697         // Check content nearly at camera position
 698         {
 699                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 700                 MapNode n = map->getNodeNoEx(p);
 701                 if(ndef->get(n).param_type == CPT_LIGHT &&
 702                                 !ndef->get(n).sunlight_propagates)
 703                         allow_allowing_non_sunlight_propagates = true;
 704         }
 705         // If would start at CONTENT_IGNORE, start closer
 706         {
 707                 v3s16 p = floatToInt(pf, BS);
 708                 MapNode n = map->getNodeNoEx(p);
 709                 if(n.getContent() == CONTENT_IGNORE){
 710                         float newd = 2*BS;
 711                         pf = p0 + dir * 2*newd;
 712                         distance = newd;
 713                         sunlight_min_d = 0;
 714                 }
 715         }
 716         for(int i=0; distance < end_distance; i++){
 717                 pf += dir * step;
 718                 distance += step;
 719                 step *= step_multiplier;
 720
 721                 v3s16 p = floatToInt(pf, BS);
 722                 MapNode n = map->getNodeNoEx(p);
 723                 if(allow_allowing_non_sunlight_propagates && i == 0 &&
 724                                 ndef->get(n).param_type == CPT_LIGHT &&
 725                                 !ndef->get(n).sunlight_propagates){
 726                         allow_non_sunlight_propagates = true;
 727                 }
 728                 if(ndef->get(n).param_type != CPT_LIGHT ||
 729                                 (!ndef->get(n).sunlight_propagates &&
 730                                         !allow_non_sunlight_propagates)){
 731                         nonlight_seen = true;
 732                         noncount++;
 733                         if(noncount >= 4)
 734                                 break;
 735                         continue;
 736                 }
 737                 if(distance >= sunlight_min_d && *sunlight_seen == false
 738                                 && nonlight_seen == false)
 739                         if(n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 740                                 *sunlight_seen = true;
 741                 noncount = 0;
 742                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 743                 brightness_count++;
 744         }
 745         *result = 0;
 746         if(brightness_count == 0)
 747                 return false;
 748         *result = brightness_sum / brightness_count;
 749         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 750                         <<(*result)<<std::endl;*/
 751         return true;
 752 }
 753
 754 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 755                 int oldvalue, bool *sunlight_seen_result)
 756 {
 757         const bool debugprint = false;
 758         INodeDefManager *ndef = m_gamedef->ndef();
 759         static v3f z_directions[50] = {
 760                 v3f(-100, 0, 0)
 761         };
 762         static f32 z_offsets[sizeof(z_directions)/sizeof(*z_directions)] = {
 763                 -1000,
 764         };
 765         if(z_directions[0].X < -99){
 766                 for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 767                         z_directions[i] = v3f(
 768                                 0.01 * myrand_range(-100, 100),
 769                                 1.0,
 770                                 0.01 * myrand_range(-100, 100)
 771                         );
 772                         z_offsets[i] = 0.01 * myrand_range(0,100);
 773                 }
 774         }
 775         if(debugprint)
 776                 std::cerr<<"In goes "<<PP(m_camera_direction)<<", out comes ";
 777         int sunlight_seen_count = 0;
 778         float sunlight_min_d = max_d*0.8;
 779         if(sunlight_min_d > 35*BS)
 780                 sunlight_min_d = 35*BS;
 781         std::vector<int> values;
 782         for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 783                 v3f z_dir = z_directions[i];
 784                 z_dir.normalize();
 785                 core::CMatrix4<f32> a;
 786                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 787                 v3f dir = m_camera_direction;
 788                 a.rotateVect(dir);
 789                 int br = 0;
 790                 float step = BS*1.5;
 791                 if(max_d > 35*BS)
 792                         step = max_d / 35 * 1.5;
 793                 float off = step * z_offsets[i];
 794                 bool sunlight_seen_now = false;
 795                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 796                                 step, 1.0, max_d*0.6+off, max_d, ndef, daylight_factor,
 797                                 sunlight_min_d,
 798                                 &br, &sunlight_seen_now);
 799                 if(sunlight_seen_now)
 800                         sunlight_seen_count++;
 801                 if(!ok)
 802                         continue;
 803                 values.push_back(br);
 804                 // Don't try too much if being in the sun is clear
 805                 if(sunlight_seen_count >= 20)
 806                         break;
 807         }
 808         int brightness_sum = 0;
 809         int brightness_count = 0;
 810         std::sort(values.begin(), values.end());
 811         u32 num_values_to_use = values.size();
 812         if(num_values_to_use >= 10)
 813                 num_values_to_use -= num_values_to_use/2;
 814         else if(num_values_to_use >= 7)
 815                 num_values_to_use -= num_values_to_use/3;
 816         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 817         if(debugprint){
 818                 for(u32 i=0; i < first_value_i; i++)
 819                         std::cerr<<values[i]<<" ";
 820                 std::cerr<<"[";
 821         }
 822         for(u32 i=first_value_i; i < first_value_i+num_values_to_use; i++){
 823                 if(debugprint)
 824                         std::cerr<<values[i]<<" ";
 825                 brightness_sum += values[i];
 826                 brightness_count++;
 827         }
 828         if(debugprint){
 829                 std::cerr<<"]";
 830                 for(u32 i=first_value_i+num_values_to_use; i < values.size(); i++)
 831                         std::cerr<<values[i]<<" ";
 832         }
 833         int ret = 0;
 834         if(brightness_count == 0){
 835                 MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
 836                 if(ndef->get(n).param_type == CPT_LIGHT){
 837                         ret = decode_light(n.getLightBlend(daylight_factor, ndef));
 838                 } else {
 839                         ret = oldvalue;
 840                         //ret = blend_light(255, 0, daylight_factor);
 841                 }
 842         } else {
 843                 /*float pre = (float)brightness_sum / (float)brightness_count;
 844                 float tmp = pre;
 845                 const float d = 0.2;
 846                 pre *= 1.0 + d*2;
 847                 pre -= tmp * d;
 848                 int preint = pre;
 849                 ret = MYMAX(0, MYMIN(255, preint));*/
 850                 ret = brightness_sum / brightness_count;
 851         }
 852         if(debugprint)
 853                 std::cerr<<"Result: "<<ret<<" sunlight_seen_count="
 854                                 <<sunlight_seen_count<<std::endl;
 855         *sunlight_seen_result = (sunlight_seen_count > 0);
 856         return ret;
 857 }
 858
 859 void ClientMap::renderPostFx()
 860 {
 861         INodeDefManager *nodemgr = m_gamedef->ndef();
 862
 863         // Sadly ISceneManager has no "post effects" render pass, in that case we
 864         // could just register for that and handle it in renderMap().
 865
 866         m_camera_mutex.Lock();
 867         v3f camera_position = m_camera_position;
 868         m_camera_mutex.Unlock();
 869
 870         LocalPlayer *player = m_client->getEnv().getLocalPlayer();
 871
 872         MapNode n = getNodeNoEx(floatToInt(camera_position, BS));
 873
 874         // - If the player is in a solid node, make everything black.
 875         // - If the player is in liquid, draw a semi-transparent overlay.
 876         // - Do not if player is in third person mode
 877         const ContentFeatures& features = nodemgr->get(n);
 878         video::SColor post_effect_color = features.post_effect_color;
 879         if(features.solidness == 2 && !(g_settings->getBool("noclip") && m_gamedef->checkLocalPrivilege("noclip")) && player->camera_mode == CAMERA_MODE_FIRST)
 880         {
 881                 post_effect_color = video::SColor(255, 0, 0, 0);
 882         }
 883         if (post_effect_color.getAlpha() != 0)
 884         {
 885                 // Draw a full-screen rectangle
 886                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 887                 v2u32 ss = driver->getScreenSize();
 888                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 889                 driver->draw2DRectangle(post_effect_color, rect);
 890         }
 891 }
 892
 893 void ClientMap::PrintInfo(std::ostream &out)
 894 {
 895         out<<"ClientMap: ";
 896 }
 897
 898