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 "util/mathconstants.h"
  33 #include <algorithm>
  34
  35 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
  36
  37 ClientMap::ClientMap(
  38                 Client *client,
  39                 IGameDef *gamedef,
  40                 MapDrawControl &control,
  41                 scene::ISceneNode* parent,
  42                 scene::ISceneManager* mgr,
  43                 s32 id
  44 ):
  45         Map(dout_client, gamedef),
  46         scene::ISceneNode(parent, mgr, id),
  47         m_client(client),
  48         m_control(control),
  49         m_camera_position(0,0,0),
  50         m_camera_direction(0,0,1),
  51         m_camera_fov(M_PI)
  52 {
  53         m_camera_mutex.Init();
  54         assert(m_camera_mutex.IsInitialized());
  55
  56         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
  57                         BS*1000000,BS*1000000,BS*1000000);
  58 }
  59
  60 ClientMap::~ClientMap()
  61 {
  62         /*JMutexAutoLock lock(mesh_mutex);
  63
  64         if(mesh != NULL)
  65         {
  66                 mesh->drop();
  67                 mesh = NULL;
  68         }*/
  69 }
  70
  71 MapSector * ClientMap::emergeSector(v2s16 p2d)
  72 {
  73         DSTACK(__FUNCTION_NAME);
  74         // Check that it doesn't exist already
  75         try{
  76                 return getSectorNoGenerate(p2d);
  77         }
  78         catch(InvalidPositionException &e)
  79         {
  80         }
  81
  82         // Create a sector
  83         ClientMapSector *sector = new ClientMapSector(this, p2d, m_gamedef);
  84
  85         {
  86                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  87                 m_sectors[p2d] = sector;
  88         }
  89
  90         return sector;
  91 }
  92
  93 #if 0
  94 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
  95 {
  96         DSTACK(__FUNCTION_NAME);
  97         ClientMapSector *sector = NULL;
  98
  99         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
 100
 101         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
 102
 103         if(n != NULL)
 104         {
 105                 sector = (ClientMapSector*)n->getValue();
 106                 assert(sector->getId() == MAPSECTOR_CLIENT);
 107         }
 108         else
 109         {
 110                 sector = new ClientMapSector(this, p2d);
 111                 {
 112                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
 113                         m_sectors.insert(p2d, sector);
 114                 }
 115         }
 116
 117         sector->deSerialize(is);
 118 }
 119 #endif
 120
 121 void ClientMap::OnRegisterSceneNode()
 122 {
 123         if(IsVisible)
 124         {
 125                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
 126                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
 127         }
 128
 129         ISceneNode::OnRegisterSceneNode();
 130 }
 131
 132 static bool isOccluded(Map *map, v3s16 p0, v3s16 p1, float step, float stepfac,
 133                 float start_off, float end_off, u32 needed_count, INodeDefManager *nodemgr)
 134 {
 135         float d0 = (float)BS * p0.getDistanceFrom(p1);
 136         v3s16 u0 = p1 - p0;
 137         v3f uf = v3f(u0.X, u0.Y, u0.Z) * BS;
 138         uf.normalize();
 139         v3f p0f = v3f(p0.X, p0.Y, p0.Z) * BS;
 140         u32 count = 0;
 141         for(float s=start_off; s<d0+end_off; s+=step){
 142                 v3f pf = p0f + uf * s;
 143                 v3s16 p = floatToInt(pf, BS);
 144                 MapNode n = map->getNodeNoEx(p);
 145                 bool is_transparent = false;
 146                 const ContentFeatures &f = nodemgr->get(n);
 147                 if(f.solidness == 0)
 148                         is_transparent = (f.visual_solidness != 2);
 149                 else
 150                         is_transparent = (f.solidness != 2);
 151                 if(!is_transparent){
 152                         count++;
 153                         if(count >= needed_count)
 154                                 return true;
 155                 }
 156                 step *= stepfac;
 157         }
 158         return false;
 159 }
 160
 161 void ClientMap::updateDrawList(video::IVideoDriver* driver)
 162 {
 163         ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
 164         g_profiler->add("CM::updateDrawList() count", 1);
 165
 166         INodeDefManager *nodemgr = m_gamedef->ndef();
 167
 168         for(std::map<v3s16, MapBlock*>::iterator
 169                         i = m_drawlist.begin();
 170                         i != m_drawlist.end(); ++i)
 171         {
 172                 MapBlock *block = i->second;
 173                 block->refDrop();
 174         }
 175         m_drawlist.clear();
 176
 177         m_camera_mutex.Lock();
 178         v3f camera_position = m_camera_position;
 179         v3f camera_direction = m_camera_direction;
 180         f32 camera_fov = m_camera_fov;
 181         m_camera_mutex.Unlock();
 182
 183         // Use a higher fov to accomodate faster camera movements.
 184         // Blocks are cropped better when they are drawn.
 185         // Or maybe they aren't? Well whatever.
 186         camera_fov *= 1.2;
 187
 188         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 189         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 190         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 191         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 192         // Take a fair amount as we will be dropping more out later
 193         // Umm... these additions are a bit strange but they are needed.
 194         v3s16 p_blocks_min(
 195                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 196                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 197                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 198         v3s16 p_blocks_max(
 199                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 200                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 201                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 202
 203         // Number of blocks in rendering range
 204         u32 blocks_in_range = 0;
 205         // Number of blocks occlusion culled
 206         u32 blocks_occlusion_culled = 0;
 207         // Number of blocks in rendering range but don't have a mesh
 208         u32 blocks_in_range_without_mesh = 0;
 209         // Blocks that had mesh that would have been drawn according to
 210         // rendering range (if max blocks limit didn't kick in)
 211         u32 blocks_would_have_drawn = 0;
 212         // Blocks that were drawn and had a mesh
 213         u32 blocks_drawn = 0;
 214         // Blocks which had a corresponding meshbuffer for this pass
 215         //u32 blocks_had_pass_meshbuf = 0;
 216         // Blocks from which stuff was actually drawn
 217         //u32 blocks_without_stuff = 0;
 218         // Distance to farthest drawn block
 219         float farthest_drawn = 0;
 220
 221         for(std::map<v2s16, MapSector*>::iterator
 222                         si = m_sectors.begin();
 223                         si != m_sectors.end(); ++si)
 224         {
 225                 MapSector *sector = si->second;
 226                 v2s16 sp = sector->getPos();
 227
 228                 if(m_control.range_all == false)
 229                 {
 230                         if(sp.X < p_blocks_min.X
 231                         || sp.X > p_blocks_max.X
 232                         || sp.Y < p_blocks_min.Z
 233                         || sp.Y > p_blocks_max.Z)
 234                                 continue;
 235                 }
 236
 237                 std::list< MapBlock * > sectorblocks;
 238                 sector->getBlocks(sectorblocks);
 239
 240                 /*
 241                         Loop through blocks in sector
 242                 */
 243
 244                 u32 sector_blocks_drawn = 0;
 245
 246                 std::list< MapBlock * >::iterator i;
 247                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
 248                 {
 249                         MapBlock *block = *i;
 250
 251                         /*
 252                                 Compare block position to camera position, skip
 253                                 if not seen on display
 254                         */
 255
 256                         float range = 100000 * BS;
 257                         if(m_control.range_all == false)
 258                                 range = m_control.wanted_range * BS;
 259
 260                         float d = 0.0;
 261                         if(isBlockInSight(block->getPos(), camera_position,
 262                                         camera_direction, camera_fov,
 263                                         range, &d) == false)
 264                         {
 265                                 continue;
 266                         }
 267
 268                         // This is ugly (spherical distance limit?)
 269                         /*if(m_control.range_all == false &&
 270                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
 271                                 continue;*/
 272
 273                         blocks_in_range++;
 274
 275                         /*
 276                                 Ignore if mesh doesn't exist
 277                         */
 278                         {
 279                                 //JMutexAutoLock lock(block->mesh_mutex);
 280
 281                                 if(block->mesh == NULL){
 282                                         blocks_in_range_without_mesh++;
 283                                         continue;
 284                                 }
 285                         }
 286
 287                         /*
 288                                 Occlusion culling
 289                         */
 290
 291                         // No occlusion culling when free_move is on and camera is
 292                         // inside ground
 293                         bool occlusion_culling_enabled = true;
 294                         if(g_settings->getBool("free_move")){
 295                                 MapNode n = getNodeNoEx(cam_pos_nodes);
 296                                 if(n.getContent() == CONTENT_IGNORE ||
 297                                                 nodemgr->get(n).solidness == 2)
 298                                         occlusion_culling_enabled = false;
 299                         }
 300
 301                         v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
 302                         cpn += v3s16(MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2);
 303                         float step = BS*1;
 304                         float stepfac = 1.1;
 305                         float startoff = BS*1;
 306                         float endoff = -BS*MAP_BLOCKSIZE*1.42*1.42;
 307                         v3s16 spn = cam_pos_nodes + v3s16(0,0,0);
 308                         s16 bs2 = MAP_BLOCKSIZE/2 + 1;
 309                         u32 needed_count = 1;
 310                         if(
 311                                 occlusion_culling_enabled &&
 312                                 isOccluded(this, spn, cpn + v3s16(0,0,0),
 313                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 314                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,bs2),
 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                         )
 331                         {
 332                                 blocks_occlusion_culled++;
 333                                 continue;
 334                         }
 335
 336                         // This block is in range. Reset usage timer.
 337                         block->resetUsageTimer();
 338
 339                         // Limit block count in case of a sudden increase
 340                         blocks_would_have_drawn++;
 341                         if(blocks_drawn >= m_control.wanted_max_blocks
 342                                         && m_control.range_all == false
 343                                         && d > m_control.wanted_min_range * BS)
 344                                 continue;
 345
 346                         // Add to set
 347                         block->refGrab();
 348                         m_drawlist[block->getPos()] = block;
 349
 350                         sector_blocks_drawn++;
 351                         blocks_drawn++;
 352                         if(d/BS > farthest_drawn)
 353                                 farthest_drawn = d/BS;
 354
 355                 } // foreach sectorblocks
 356
 357                 if(sector_blocks_drawn != 0)
 358                         m_last_drawn_sectors.insert(sp);
 359         }
 360
 361         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
 362         m_control.blocks_drawn = blocks_drawn;
 363         m_control.farthest_drawn = farthest_drawn;
 364
 365         g_profiler->avg("CM: blocks in range", blocks_in_range);
 366         g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
 367         if(blocks_in_range != 0)
 368                 g_profiler->avg("CM: blocks in range without mesh (frac)",
 369                                 (float)blocks_in_range_without_mesh/blocks_in_range);
 370         g_profiler->avg("CM: blocks drawn", blocks_drawn);
 371         g_profiler->avg("CM: farthest drawn", farthest_drawn);
 372         g_profiler->avg("CM: wanted max blocks", m_control.wanted_max_blocks);
 373 }
 374
 375 struct MeshBufList
 376 {
 377         video::SMaterial m;
 378         std::list<scene::IMeshBuffer*> bufs;
 379 };
 380
 381 struct MeshBufListList
 382 {
 383         std::list<MeshBufList> lists;
 384
 385         void clear()
 386         {
 387                 lists.clear();
 388         }
 389
 390         void add(scene::IMeshBuffer *buf)
 391         {
 392                 for(std::list<MeshBufList>::iterator i = lists.begin();
 393                                 i != lists.end(); ++i){
 394                         MeshBufList &l = *i;
 395                         if(l.m == buf->getMaterial()){
 396                                 l.bufs.push_back(buf);
 397                                 return;
 398                         }
 399                 }
 400                 MeshBufList l;
 401                 l.m = buf->getMaterial();
 402                 l.bufs.push_back(buf);
 403                 lists.push_back(l);
 404         }
 405 };
 406
 407 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 408 {
 409         DSTACK(__FUNCTION_NAME);
 410
 411         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 412
 413         std::string prefix;
 414         if(pass == scene::ESNRP_SOLID)
 415                 prefix = "CM: solid: ";
 416         else
 417                 prefix = "CM: transparent: ";
 418
 419         /*
 420                 This is called two times per frame, reset on the non-transparent one
 421         */
 422         if(pass == scene::ESNRP_SOLID)
 423         {
 424                 m_last_drawn_sectors.clear();
 425         }
 426
 427         bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
 428         bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
 429         bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 430
 431         /*
 432                 Get time for measuring timeout.
 433
 434                 Measuring time is very useful for long delays when the
 435                 machine is swapping a lot.
 436         */
 437         int time1 = time(0);
 438
 439         /*
 440                 Get animation parameters
 441         */
 442         float animation_time = m_client->getAnimationTime();
 443         int crack = m_client->getCrackLevel();
 444         u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 445
 446         m_camera_mutex.Lock();
 447         v3f camera_position = m_camera_position;
 448         v3f camera_direction = m_camera_direction;
 449         f32 camera_fov = m_camera_fov;
 450         m_camera_mutex.Unlock();
 451
 452         /*
 453                 Get all blocks and draw all visible ones
 454         */
 455
 456         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 457
 458         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 459
 460         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 461         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 462
 463         // Take a fair amount as we will be dropping more out later
 464         // Umm... these additions are a bit strange but they are needed.
 465         v3s16 p_blocks_min(
 466                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 467                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 468                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 469         v3s16 p_blocks_max(
 470                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 471                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 472                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 473
 474         u32 vertex_count = 0;
 475         u32 meshbuffer_count = 0;
 476
 477         // For limiting number of mesh animations per frame
 478         u32 mesh_animate_count = 0;
 479         u32 mesh_animate_count_far = 0;
 480
 481         // Blocks that were drawn and had a mesh
 482         u32 blocks_drawn = 0;
 483         // Blocks which had a corresponding meshbuffer for this pass
 484         u32 blocks_had_pass_meshbuf = 0;
 485         // Blocks from which stuff was actually drawn
 486         u32 blocks_without_stuff = 0;
 487
 488         /*
 489                 Draw the selected MapBlocks
 490         */
 491
 492         {
 493         ScopeProfiler sp(g_profiler, prefix+"drawing blocks", SPT_AVG);
 494
 495         MeshBufListList drawbufs;
 496
 497         for(std::map<v3s16, MapBlock*>::iterator
 498                         i = m_drawlist.begin();
 499                         i != m_drawlist.end(); ++i)
 500         {
 501                 MapBlock *block = i->second;
 502
 503                 // If the mesh of the block happened to get deleted, ignore it
 504                 if(block->mesh == NULL)
 505                         continue;
 506
 507                 float d = 0.0;
 508                 if(isBlockInSight(block->getPos(), camera_position,
 509                                 camera_direction, camera_fov,
 510                                 100000*BS, &d) == false)
 511                 {
 512                         continue;
 513                 }
 514
 515                 // Mesh animation
 516                 {
 517                         //JMutexAutoLock lock(block->mesh_mutex);
 518                         MapBlockMesh *mapBlockMesh = block->mesh;
 519                         assert(mapBlockMesh);
 520                         // Pretty random but this should work somewhat nicely
 521                         bool faraway = d >= BS*50;
 522                         //bool faraway = d >= m_control.wanted_range * BS;
 523                         if(mapBlockMesh->isAnimationForced() ||
 524                                         !faraway ||
 525                                         mesh_animate_count_far < (m_control.range_all ? 200 : 50))
 526                         {
 527                                 bool animated = mapBlockMesh->animate(
 528                                                 faraway,
 529                                                 animation_time,
 530                                                 crack,
 531                                                 daynight_ratio);
 532                                 if(animated)
 533                                         mesh_animate_count++;
 534                                 if(animated && faraway)
 535                                         mesh_animate_count_far++;
 536                         }
 537                         else
 538                         {
 539                                 mapBlockMesh->decreaseAnimationForceTimer();
 540                         }
 541                 }
 542
 543                 /*
 544                         Get the meshbuffers of the block
 545                 */
 546                 {
 547                         //JMutexAutoLock lock(block->mesh_mutex);
 548
 549                         MapBlockMesh *mapBlockMesh = block->mesh;
 550                         assert(mapBlockMesh);
 551
 552                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 553                         assert(mesh);
 554
 555                         u32 c = mesh->getMeshBufferCount();
 556                         for(u32 i=0; i<c; i++)
 557                         {
 558                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 559
 560                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
 561                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
 562                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 563
 564                                 const video::SMaterial& material = buf->getMaterial();
 565                                 video::IMaterialRenderer* rnd =
 566                                                 driver->getMaterialRenderer(material.MaterialType);
 567                                 bool transparent = (rnd && rnd->isTransparent());
 568                                 if(transparent == is_transparent_pass)
 569                                 {
 570                                         if(buf->getVertexCount() == 0)
 571                                                 errorstream<<"Block ["<<analyze_block(block)
 572                                                                 <<"] contains an empty meshbuf"<<std::endl;
 573                                         drawbufs.add(buf);
 574                                 }
 575                         }
 576                 }
 577         }
 578
 579         std::list<MeshBufList> &lists = drawbufs.lists;
 580
 581         int timecheck_counter = 0;
 582         for(std::list<MeshBufList>::iterator i = lists.begin();
 583                         i != lists.end(); ++i)
 584         {
 585                 {
 586                         timecheck_counter++;
 587                         if(timecheck_counter > 50)
 588                         {
 589                                 timecheck_counter = 0;
 590                                 int time2 = time(0);
 591                                 if(time2 > time1 + 4)
 592                                 {
 593                                         infostream<<"ClientMap::renderMap(): "
 594                                                 "Rendering takes ages, returning."
 595                                                 <<std::endl;
 596                                         return;
 597                                 }
 598                         }
 599                 }
 600
 601                 MeshBufList &list = *i;
 602
 603                 driver->setMaterial(list.m);
 604
 605                 for(std::list<scene::IMeshBuffer*>::iterator j = list.bufs.begin();
 606                                 j != list.bufs.end(); ++j)
 607                 {
 608                         scene::IMeshBuffer *buf = *j;
 609                         driver->drawMeshBuffer(buf);
 610                         vertex_count += buf->getVertexCount();
 611                         meshbuffer_count++;
 612                 }
 613 #if 0
 614                 /*
 615                         Draw the faces of the block
 616                 */
 617                 {
 618                         //JMutexAutoLock lock(block->mesh_mutex);
 619
 620                         MapBlockMesh *mapBlockMesh = block->mesh;
 621                         assert(mapBlockMesh);
 622
 623                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 624                         assert(mesh);
 625
 626                         u32 c = mesh->getMeshBufferCount();
 627                         bool stuff_actually_drawn = false;
 628                         for(u32 i=0; i<c; i++)
 629                         {
 630                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 631                                 const video::SMaterial& material = buf->getMaterial();
 632                                 video::IMaterialRenderer* rnd =
 633                                                 driver->getMaterialRenderer(material.MaterialType);
 634                                 bool transparent = (rnd && rnd->isTransparent());
 635                                 // Render transparent on transparent pass and likewise.
 636                                 if(transparent == is_transparent_pass)
 637                                 {
 638                                         if(buf->getVertexCount() == 0)
 639                                                 errorstream<<"Block ["<<analyze_block(block)
 640                                                                 <<"] contains an empty meshbuf"<<std::endl;
 641                                         /*
 642                                                 This *shouldn't* hurt too much because Irrlicht
 643                                                 doesn't change opengl textures if the old
 644                                                 material has the same texture.
 645                                         */
 646                                         driver->setMaterial(buf->getMaterial());
 647                                         driver->drawMeshBuffer(buf);
 648                                         vertex_count += buf->getVertexCount();
 649                                         meshbuffer_count++;
 650                                         stuff_actually_drawn = true;
 651                                 }
 652                         }
 653                         if(stuff_actually_drawn)
 654                                 blocks_had_pass_meshbuf++;
 655                         else
 656                                 blocks_without_stuff++;
 657                 }
 658 #endif
 659         }
 660         } // ScopeProfiler
 661
 662         // Log only on solid pass because values are the same
 663         if(pass == scene::ESNRP_SOLID){
 664                 g_profiler->avg("CM: animated meshes", mesh_animate_count);
 665                 g_profiler->avg("CM: animated meshes (far)", mesh_animate_count_far);
 666         }
 667
 668         g_profiler->avg(prefix+"vertices drawn", vertex_count);
 669         if(blocks_had_pass_meshbuf != 0)
 670                 g_profiler->avg(prefix+"meshbuffers per block",
 671                                 (float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
 672         if(blocks_drawn != 0)
 673                 g_profiler->avg(prefix+"empty blocks (frac)",
 674                                 (float)blocks_without_stuff / blocks_drawn);
 675
 676         /*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
 677                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
 678 }
 679
 680 static bool getVisibleBrightness(Map *map, v3f p0, v3f dir, float step,
 681                 float step_multiplier, float start_distance, float end_distance,
 682                 INodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 683                 int *result, bool *sunlight_seen)
 684 {
 685         int brightness_sum = 0;
 686         int brightness_count = 0;
 687         float distance = start_distance;
 688         dir.normalize();
 689         v3f pf = p0;
 690         pf += dir * distance;
 691         int noncount = 0;
 692         bool nonlight_seen = false;
 693         bool allow_allowing_non_sunlight_propagates = false;
 694         bool allow_non_sunlight_propagates = false;
 695         // Check content nearly at camera position
 696         {
 697                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 698                 MapNode n = map->getNodeNoEx(p);
 699                 if(ndef->get(n).param_type == CPT_LIGHT &&
 700                                 !ndef->get(n).sunlight_propagates)
 701                         allow_allowing_non_sunlight_propagates = true;
 702         }
 703         // If would start at CONTENT_IGNORE, start closer
 704         {
 705                 v3s16 p = floatToInt(pf, BS);
 706                 MapNode n = map->getNodeNoEx(p);
 707                 if(n.getContent() == CONTENT_IGNORE){
 708                         float newd = 2*BS;
 709                         pf = p0 + dir * 2*newd;
 710                         distance = newd;
 711                         sunlight_min_d = 0;
 712                 }
 713         }
 714         for(int i=0; distance < end_distance; i++){
 715                 pf += dir * step;
 716                 distance += step;
 717                 step *= step_multiplier;
 718
 719                 v3s16 p = floatToInt(pf, BS);
 720                 MapNode n = map->getNodeNoEx(p);
 721                 if(allow_allowing_non_sunlight_propagates && i == 0 &&
 722                                 ndef->get(n).param_type == CPT_LIGHT &&
 723                                 !ndef->get(n).sunlight_propagates){
 724                         allow_non_sunlight_propagates = true;
 725                 }
 726                 if(ndef->get(n).param_type != CPT_LIGHT ||
 727                                 (!ndef->get(n).sunlight_propagates &&
 728                                         !allow_non_sunlight_propagates)){
 729                         nonlight_seen = true;
 730                         noncount++;
 731                         if(noncount >= 4)
 732                                 break;
 733                         continue;
 734                 }
 735                 if(distance >= sunlight_min_d && *sunlight_seen == false
 736                                 && nonlight_seen == false)
 737                         if(n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 738                                 *sunlight_seen = true;
 739                 noncount = 0;
 740                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 741                 brightness_count++;
 742         }
 743         *result = 0;
 744         if(brightness_count == 0)
 745                 return false;
 746         *result = brightness_sum / brightness_count;
 747         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 748                         <<(*result)<<std::endl;*/
 749         return true;
 750 }
 751
 752 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 753                 int oldvalue, bool *sunlight_seen_result)
 754 {
 755         const bool debugprint = false;
 756         INodeDefManager *ndef = m_gamedef->ndef();
 757         static v3f z_directions[50] = {
 758                 v3f(-100, 0, 0)
 759         };
 760         static f32 z_offsets[sizeof(z_directions)/sizeof(*z_directions)] = {
 761                 -1000,
 762         };
 763         if(z_directions[0].X < -99){
 764                 for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 765                         z_directions[i] = v3f(
 766                                 0.01 * myrand_range(-100, 100),
 767                                 1.0,
 768                                 0.01 * myrand_range(-100, 100)
 769                         );
 770                         z_offsets[i] = 0.01 * myrand_range(0,100);
 771                 }
 772         }
 773         if(debugprint)
 774                 std::cerr<<"In goes "<<PP(m_camera_direction)<<", out comes ";
 775         int sunlight_seen_count = 0;
 776         float sunlight_min_d = max_d*0.8;
 777         if(sunlight_min_d > 35*BS)
 778                 sunlight_min_d = 35*BS;
 779         std::vector<int> values;
 780         for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 781                 v3f z_dir = z_directions[i];
 782                 z_dir.normalize();
 783                 core::CMatrix4<f32> a;
 784                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 785                 v3f dir = m_camera_direction;
 786                 a.rotateVect(dir);
 787                 int br = 0;
 788                 float step = BS*1.5;
 789                 if(max_d > 35*BS)
 790                         step = max_d / 35 * 1.5;
 791                 float off = step * z_offsets[i];
 792                 bool sunlight_seen_now = false;
 793                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 794                                 step, 1.0, max_d*0.6+off, max_d, ndef, daylight_factor,
 795                                 sunlight_min_d,
 796                                 &br, &sunlight_seen_now);
 797                 if(sunlight_seen_now)
 798                         sunlight_seen_count++;
 799                 if(!ok)
 800                         continue;
 801                 values.push_back(br);
 802                 // Don't try too much if being in the sun is clear
 803                 if(sunlight_seen_count >= 20)
 804                         break;
 805         }
 806         int brightness_sum = 0;
 807         int brightness_count = 0;
 808         std::sort(values.begin(), values.end());
 809         u32 num_values_to_use = values.size();
 810         if(num_values_to_use >= 10)
 811                 num_values_to_use -= num_values_to_use/2;
 812         else if(num_values_to_use >= 7)
 813                 num_values_to_use -= num_values_to_use/3;
 814         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 815         if(debugprint){
 816                 for(u32 i=0; i < first_value_i; i++)
 817                         std::cerr<<values[i]<<" ";
 818                 std::cerr<<"[";
 819         }
 820         for(u32 i=first_value_i; i < first_value_i+num_values_to_use; i++){
 821                 if(debugprint)
 822                         std::cerr<<values[i]<<" ";
 823                 brightness_sum += values[i];
 824                 brightness_count++;
 825         }
 826         if(debugprint){
 827                 std::cerr<<"]";
 828                 for(u32 i=first_value_i+num_values_to_use; i < values.size(); i++)
 829                         std::cerr<<values[i]<<" ";
 830         }
 831         int ret = 0;
 832         if(brightness_count == 0){
 833                 MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
 834                 if(ndef->get(n).param_type == CPT_LIGHT){
 835                         ret = decode_light(n.getLightBlend(daylight_factor, ndef));
 836                 } else {
 837                         ret = oldvalue;
 838                         //ret = blend_light(255, 0, daylight_factor);
 839                 }
 840         } else {
 841                 /*float pre = (float)brightness_sum / (float)brightness_count;
 842                 float tmp = pre;
 843                 const float d = 0.2;
 844                 pre *= 1.0 + d*2;
 845                 pre -= tmp * d;
 846                 int preint = pre;
 847                 ret = MYMAX(0, MYMIN(255, preint));*/
 848                 ret = brightness_sum / brightness_count;
 849         }
 850         if(debugprint)
 851                 std::cerr<<"Result: "<<ret<<" sunlight_seen_count="
 852                                 <<sunlight_seen_count<<std::endl;
 853         *sunlight_seen_result = (sunlight_seen_count > 0);
 854         return ret;
 855 }
 856
 857 void ClientMap::renderPostFx()
 858 {
 859         INodeDefManager *nodemgr = m_gamedef->ndef();
 860
 861         // Sadly ISceneManager has no "post effects" render pass, in that case we
 862         // could just register for that and handle it in renderMap().
 863
 864         m_camera_mutex.Lock();
 865         v3f camera_position = m_camera_position;
 866         m_camera_mutex.Unlock();
 867
 868         MapNode n = getNodeNoEx(floatToInt(camera_position, BS));
 869
 870         // - If the player is in a solid node, make everything black.
 871         // - If the player is in liquid, draw a semi-transparent overlay.
 872         const ContentFeatures& features = nodemgr->get(n);
 873         video::SColor post_effect_color = features.post_effect_color;
 874         if(features.solidness == 2 && !(g_settings->getBool("noclip") && m_gamedef->checkLocalPrivilege("noclip")))
 875         {
 876                 post_effect_color = video::SColor(255, 0, 0, 0);
 877         }
 878         if (post_effect_color.getAlpha() != 0)
 879         {
 880                 // Draw a full-screen rectangle
 881                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 882                 v2u32 ss = driver->getScreenSize();
 883                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 884                 driver->draw2DRectangle(post_effect_color, rect);
 885         }
 886 }
 887
 888 void ClientMap::PrintInfo(std::ostream &out)
 889 {
 890         out<<"ClientMap: ";
 891 }
 892
 893