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_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
  54                         BS*1000000,BS*1000000,BS*1000000);
  55 }
  56
  57 ClientMap::~ClientMap()
  58 {
  59         /*JMutexAutoLock lock(mesh_mutex);
  60
  61         if(mesh != NULL)
  62         {
  63                 mesh->drop();
  64                 mesh = NULL;
  65         }*/
  66 }
  67
  68 MapSector * ClientMap::emergeSector(v2s16 p2d)
  69 {
  70         DSTACK(__FUNCTION_NAME);
  71         // Check that it doesn't exist already
  72         try{
  73                 return getSectorNoGenerate(p2d);
  74         }
  75         catch(InvalidPositionException &e)
  76         {
  77         }
  78
  79         // Create a sector
  80         ClientMapSector *sector = new ClientMapSector(this, p2d, m_gamedef);
  81
  82         {
  83                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  84                 m_sectors[p2d] = sector;
  85         }
  86
  87         return sector;
  88 }
  89
  90 #if 0
  91 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
  92 {
  93         DSTACK(__FUNCTION_NAME);
  94         ClientMapSector *sector = NULL;
  95
  96         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  97
  98         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
  99
 100         if(n != NULL)
 101         {
 102                 sector = (ClientMapSector*)n->getValue();
 103                 assert(sector->getId() == MAPSECTOR_CLIENT);
 104         }
 105         else
 106         {
 107                 sector = new ClientMapSector(this, p2d);
 108                 {
 109                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
 110                         m_sectors.insert(p2d, sector);
 111                 }
 112         }
 113
 114         sector->deSerialize(is);
 115 }
 116 #endif
 117
 118 void ClientMap::OnRegisterSceneNode()
 119 {
 120         if(IsVisible)
 121         {
 122                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
 123                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
 124         }
 125
 126         ISceneNode::OnRegisterSceneNode();
 127 }
 128
 129 static bool isOccluded(Map *map, v3s16 p0, v3s16 p1, float step, float stepfac,
 130                 float start_off, float end_off, u32 needed_count, INodeDefManager *nodemgr)
 131 {
 132         float d0 = (float)BS * p0.getDistanceFrom(p1);
 133         v3s16 u0 = p1 - p0;
 134         v3f uf = v3f(u0.X, u0.Y, u0.Z) * BS;
 135         uf.normalize();
 136         v3f p0f = v3f(p0.X, p0.Y, p0.Z) * BS;
 137         u32 count = 0;
 138         for(float s=start_off; s<d0+end_off; s+=step){
 139                 v3f pf = p0f + uf * s;
 140                 v3s16 p = floatToInt(pf, BS);
 141                 MapNode n = map->getNodeNoEx(p);
 142                 bool is_transparent = false;
 143                 const ContentFeatures &f = nodemgr->get(n);
 144                 if(f.solidness == 0)
 145                         is_transparent = (f.visual_solidness != 2);
 146                 else
 147                         is_transparent = (f.solidness != 2);
 148                 if(!is_transparent){
 149                         count++;
 150                         if(count >= needed_count)
 151                                 return true;
 152                 }
 153                 step *= stepfac;
 154         }
 155         return false;
 156 }
 157
 158 void ClientMap::updateDrawList(video::IVideoDriver* driver)
 159 {
 160         ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
 161         g_profiler->add("CM::updateDrawList() count", 1);
 162
 163         INodeDefManager *nodemgr = m_gamedef->ndef();
 164
 165         for(std::map<v3s16, MapBlock*>::iterator
 166                         i = m_drawlist.begin();
 167                         i != m_drawlist.end(); ++i)
 168         {
 169                 MapBlock *block = i->second;
 170                 block->refDrop();
 171         }
 172         m_drawlist.clear();
 173
 174         m_camera_mutex.Lock();
 175         v3f camera_position = m_camera_position;
 176         v3f camera_direction = m_camera_direction;
 177         f32 camera_fov = m_camera_fov;
 178         v3s16 camera_offset = m_camera_offset;
 179         m_camera_mutex.Unlock();
 180
 181         // Use a higher fov to accomodate faster camera movements.
 182         // Blocks are cropped better when they are drawn.
 183         // Or maybe they aren't? Well whatever.
 184         camera_fov *= 1.2;
 185
 186         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 187         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 188         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 189         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 190         // Take a fair amount as we will be dropping more out later
 191         // Umm... these additions are a bit strange but they are needed.
 192         v3s16 p_blocks_min(
 193                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 194                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 195                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 196         v3s16 p_blocks_max(
 197                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 198                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 199                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 200
 201         // Number of blocks in rendering range
 202         u32 blocks_in_range = 0;
 203         // Number of blocks occlusion culled
 204         u32 blocks_occlusion_culled = 0;
 205         // Number of blocks in rendering range but don't have a mesh
 206         u32 blocks_in_range_without_mesh = 0;
 207         // Blocks that had mesh that would have been drawn according to
 208         // rendering range (if max blocks limit didn't kick in)
 209         u32 blocks_would_have_drawn = 0;
 210         // Blocks that were drawn and had a mesh
 211         u32 blocks_drawn = 0;
 212         // Blocks which had a corresponding meshbuffer for this pass
 213         //u32 blocks_had_pass_meshbuf = 0;
 214         // Blocks from which stuff was actually drawn
 215         //u32 blocks_without_stuff = 0;
 216         // Distance to farthest drawn block
 217         float farthest_drawn = 0;
 218
 219         for(std::map<v2s16, MapSector*>::iterator
 220                         si = m_sectors.begin();
 221                         si != m_sectors.end(); ++si)
 222         {
 223                 MapSector *sector = si->second;
 224                 v2s16 sp = sector->getPos();
 225
 226                 if(m_control.range_all == false)
 227                 {
 228                         if(sp.X < p_blocks_min.X
 229                         || sp.X > p_blocks_max.X
 230                         || sp.Y < p_blocks_min.Z
 231                         || sp.Y > p_blocks_max.Z)
 232                                 continue;
 233                 }
 234
 235                 std::list< MapBlock * > sectorblocks;
 236                 sector->getBlocks(sectorblocks);
 237
 238                 /*
 239                         Loop through blocks in sector
 240                 */
 241
 242                 u32 sector_blocks_drawn = 0;
 243
 244                 std::list< MapBlock * >::iterator i;
 245                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
 246                 {
 247                         MapBlock *block = *i;
 248
 249                         /*
 250                                 Compare block position to camera position, skip
 251                                 if not seen on display
 252                         */
 253
 254                         if (block->mesh != NULL)
 255                                 block->mesh->updateCameraOffset(m_camera_offset);
 256
 257                         float range = 100000 * BS;
 258                         if(m_control.range_all == false)
 259                                 range = m_control.wanted_range * BS;
 260
 261                         float d = 0.0;
 262                         if(isBlockInSight(block->getPos(), camera_position,
 263                                         camera_direction, camera_fov,
 264                                         range, &d) == false)
 265                         {
 266                                 continue;
 267                         }
 268
 269                         // This is ugly (spherical distance limit?)
 270                         /*if(m_control.range_all == false &&
 271                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
 272                                 continue;*/
 273
 274                         blocks_in_range++;
 275
 276                         /*
 277                                 Ignore if mesh doesn't exist
 278                         */
 279                         {
 280                                 //JMutexAutoLock lock(block->mesh_mutex);
 281
 282                                 if(block->mesh == NULL){
 283                                         blocks_in_range_without_mesh++;
 284                                         continue;
 285                                 }
 286                         }
 287
 288                         /*
 289                                 Occlusion culling
 290                         */
 291
 292                         // No occlusion culling when free_move is on and camera is
 293                         // inside ground
 294                         bool occlusion_culling_enabled = true;
 295                         if(g_settings->getBool("free_move")){
 296                                 MapNode n = getNodeNoEx(cam_pos_nodes);
 297                                 if(n.getContent() == CONTENT_IGNORE ||
 298                                                 nodemgr->get(n).solidness == 2)
 299                                         occlusion_culling_enabled = false;
 300                         }
 301
 302                         v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
 303                         cpn += v3s16(MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2);
 304                         float step = BS*1;
 305                         float stepfac = 1.1;
 306                         float startoff = BS*1;
 307                         float endoff = -BS*MAP_BLOCKSIZE*1.42*1.42;
 308                         v3s16 spn = cam_pos_nodes + v3s16(0,0,0);
 309                         s16 bs2 = MAP_BLOCKSIZE/2 + 1;
 310                         u32 needed_count = 1;
 311                         if(
 312                                 occlusion_culling_enabled &&
 313                                 isOccluded(this, spn, cpn + v3s16(0,0,0),
 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                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,bs2),
 328                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 329                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,-bs2),
 330                                         step, stepfac, startoff, endoff, needed_count, nodemgr)
 331                         )
 332                         {
 333                                 blocks_occlusion_culled++;
 334                                 continue;
 335                         }
 336
 337                         // This block is in range. Reset usage timer.
 338                         block->resetUsageTimer();
 339
 340                         // Limit block count in case of a sudden increase
 341                         blocks_would_have_drawn++;
 342                         if(blocks_drawn >= m_control.wanted_max_blocks
 343                                         && m_control.range_all == false
 344                                         && d > m_control.wanted_min_range * BS)
 345                                 continue;
 346
 347                         // Add to set
 348                         block->refGrab();
 349                         m_drawlist[block->getPos()] = block;
 350
 351                         sector_blocks_drawn++;
 352                         blocks_drawn++;
 353                         if(d/BS > farthest_drawn)
 354                                 farthest_drawn = d/BS;
 355
 356                 } // foreach sectorblocks
 357
 358                 if(sector_blocks_drawn != 0)
 359                         m_last_drawn_sectors.insert(sp);
 360         }
 361
 362         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
 363         m_control.blocks_drawn = blocks_drawn;
 364         m_control.farthest_drawn = farthest_drawn;
 365
 366         g_profiler->avg("CM: blocks in range", blocks_in_range);
 367         g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
 368         if(blocks_in_range != 0)
 369                 g_profiler->avg("CM: blocks in range without mesh (frac)",
 370                                 (float)blocks_in_range_without_mesh/blocks_in_range);
 371         g_profiler->avg("CM: blocks drawn", blocks_drawn);
 372         g_profiler->avg("CM: farthest drawn", farthest_drawn);
 373         g_profiler->avg("CM: wanted max blocks", m_control.wanted_max_blocks);
 374 }
 375
 376 struct MeshBufList
 377 {
 378         video::SMaterial m;
 379         std::list<scene::IMeshBuffer*> bufs;
 380 };
 381
 382 struct MeshBufListList
 383 {
 384         std::list<MeshBufList> lists;
 385
 386         void clear()
 387         {
 388                 lists.clear();
 389         }
 390
 391         void add(scene::IMeshBuffer *buf)
 392         {
 393                 for(std::list<MeshBufList>::iterator i = lists.begin();
 394                                 i != lists.end(); ++i){
 395                         MeshBufList &l = *i;
 396                         if(l.m == buf->getMaterial()){
 397                                 l.bufs.push_back(buf);
 398                                 return;
 399                         }
 400                 }
 401                 MeshBufList l;
 402                 l.m = buf->getMaterial();
 403                 l.bufs.push_back(buf);
 404                 lists.push_back(l);
 405         }
 406 };
 407
 408 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 409 {
 410         DSTACK(__FUNCTION_NAME);
 411
 412         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 413
 414         std::string prefix;
 415         if(pass == scene::ESNRP_SOLID)
 416                 prefix = "CM: solid: ";
 417         else
 418                 prefix = "CM: transparent: ";
 419
 420         /*
 421                 This is called two times per frame, reset on the non-transparent one
 422         */
 423         if(pass == scene::ESNRP_SOLID)
 424         {
 425                 m_last_drawn_sectors.clear();
 426         }
 427
 428         bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
 429         bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
 430         bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 431
 432         /*
 433                 Get time for measuring timeout.
 434
 435                 Measuring time is very useful for long delays when the
 436                 machine is swapping a lot.
 437         */
 438         int time1 = time(0);
 439
 440         /*
 441                 Get animation parameters
 442         */
 443         float animation_time = m_client->getAnimationTime();
 444         int crack = m_client->getCrackLevel();
 445         u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 446
 447         m_camera_mutex.Lock();
 448         v3f camera_position = m_camera_position;
 449         v3f camera_direction = m_camera_direction;
 450         f32 camera_fov = m_camera_fov;
 451         m_camera_mutex.Unlock();
 452
 453         /*
 454                 Get all blocks and draw all visible ones
 455         */
 456
 457         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 458
 459         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 460
 461         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 462         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 463
 464         // Take a fair amount as we will be dropping more out later
 465         // Umm... these additions are a bit strange but they are needed.
 466         v3s16 p_blocks_min(
 467                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 468                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 469                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 470         v3s16 p_blocks_max(
 471                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 472                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 473                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 474
 475         u32 vertex_count = 0;
 476         u32 meshbuffer_count = 0;
 477
 478         // For limiting number of mesh animations per frame
 479         u32 mesh_animate_count = 0;
 480         u32 mesh_animate_count_far = 0;
 481
 482         // Blocks that were drawn and had a mesh
 483         u32 blocks_drawn = 0;
 484         // Blocks which had a corresponding meshbuffer for this pass
 485         u32 blocks_had_pass_meshbuf = 0;
 486         // Blocks from which stuff was actually drawn
 487         u32 blocks_without_stuff = 0;
 488
 489         /*
 490                 Draw the selected MapBlocks
 491         */
 492
 493         {
 494         ScopeProfiler sp(g_profiler, prefix+"drawing blocks", SPT_AVG);
 495
 496         MeshBufListList drawbufs;
 497
 498         for(std::map<v3s16, MapBlock*>::iterator
 499                         i = m_drawlist.begin();
 500                         i != m_drawlist.end(); ++i)
 501         {
 502                 MapBlock *block = i->second;
 503
 504                 // If the mesh of the block happened to get deleted, ignore it
 505                 if(block->mesh == NULL)
 506                         continue;
 507
 508                 float d = 0.0;
 509                 if(isBlockInSight(block->getPos(), camera_position,
 510                                 camera_direction, camera_fov,
 511                                 100000*BS, &d) == false)
 512                 {
 513                         continue;
 514                 }
 515
 516                 // Mesh animation
 517                 {
 518                         //JMutexAutoLock lock(block->mesh_mutex);
 519                         MapBlockMesh *mapBlockMesh = block->mesh;
 520                         assert(mapBlockMesh);
 521                         // Pretty random but this should work somewhat nicely
 522                         bool faraway = d >= BS*50;
 523                         //bool faraway = d >= m_control.wanted_range * BS;
 524                         if(mapBlockMesh->isAnimationForced() ||
 525                                         !faraway ||
 526                                         mesh_animate_count_far < (m_control.range_all ? 200 : 50))
 527                         {
 528                                 bool animated = mapBlockMesh->animate(
 529                                                 faraway,
 530                                                 animation_time,
 531                                                 crack,
 532                                                 daynight_ratio);
 533                                 if(animated)
 534                                         mesh_animate_count++;
 535                                 if(animated && faraway)
 536                                         mesh_animate_count_far++;
 537                         }
 538                         else
 539                         {
 540                                 mapBlockMesh->decreaseAnimationForceTimer();
 541                         }
 542                 }
 543
 544                 /*
 545                         Get the meshbuffers of the block
 546                 */
 547                 {
 548                         //JMutexAutoLock lock(block->mesh_mutex);
 549
 550                         MapBlockMesh *mapBlockMesh = block->mesh;
 551                         assert(mapBlockMesh);
 552
 553                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 554                         assert(mesh);
 555
 556                         u32 c = mesh->getMeshBufferCount();
 557                         for(u32 i=0; i<c; i++)
 558                         {
 559                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 560
 561                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
 562                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
 563                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 564
 565                                 const video::SMaterial& material = buf->getMaterial();
 566                                 video::IMaterialRenderer* rnd =
 567                                                 driver->getMaterialRenderer(material.MaterialType);
 568                                 bool transparent = (rnd && rnd->isTransparent());
 569                                 if(transparent == is_transparent_pass)
 570                                 {
 571                                         if(buf->getVertexCount() == 0)
 572                                                 errorstream<<"Block ["<<analyze_block(block)
 573                                                                 <<"] contains an empty meshbuf"<<std::endl;
 574                                         drawbufs.add(buf);
 575                                 }
 576                         }
 577                 }
 578         }
 579
 580         std::list<MeshBufList> &lists = drawbufs.lists;
 581
 582         int timecheck_counter = 0;
 583         for(std::list<MeshBufList>::iterator i = lists.begin();
 584                         i != lists.end(); ++i)
 585         {
 586                 {
 587                         timecheck_counter++;
 588                         if(timecheck_counter > 50)
 589                         {
 590                                 timecheck_counter = 0;
 591                                 int time2 = time(0);
 592                                 if(time2 > time1 + 4)
 593                                 {
 594                                         infostream<<"ClientMap::renderMap(): "
 595                                                 "Rendering takes ages, returning."
 596                                                 <<std::endl;
 597                                         return;
 598                                 }
 599                         }
 600                 }
 601
 602                 MeshBufList &list = *i;
 603
 604                 driver->setMaterial(list.m);
 605
 606                 for(std::list<scene::IMeshBuffer*>::iterator j = list.bufs.begin();
 607                                 j != list.bufs.end(); ++j)
 608                 {
 609                         scene::IMeshBuffer *buf = *j;
 610                         driver->drawMeshBuffer(buf);
 611                         vertex_count += buf->getVertexCount();
 612                         meshbuffer_count++;
 613                 }
 614 #if 0
 615                 /*
 616                         Draw the faces of the block
 617                 */
 618                 {
 619                         //JMutexAutoLock lock(block->mesh_mutex);
 620
 621                         MapBlockMesh *mapBlockMesh = block->mesh;
 622                         assert(mapBlockMesh);
 623
 624                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 625                         assert(mesh);
 626
 627                         u32 c = mesh->getMeshBufferCount();
 628                         bool stuff_actually_drawn = false;
 629                         for(u32 i=0; i<c; i++)
 630                         {
 631                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 632                                 const video::SMaterial& material = buf->getMaterial();
 633                                 video::IMaterialRenderer* rnd =
 634                                                 driver->getMaterialRenderer(material.MaterialType);
 635                                 bool transparent = (rnd && rnd->isTransparent());
 636                                 // Render transparent on transparent pass and likewise.
 637                                 if(transparent == is_transparent_pass)
 638                                 {
 639                                         if(buf->getVertexCount() == 0)
 640                                                 errorstream<<"Block ["<<analyze_block(block)
 641                                                                 <<"] contains an empty meshbuf"<<std::endl;
 642                                         /*
 643                                                 This *shouldn't* hurt too much because Irrlicht
 644                                                 doesn't change opengl textures if the old
 645                                                 material has the same texture.
 646                                         */
 647                                         driver->setMaterial(buf->getMaterial());
 648                                         driver->drawMeshBuffer(buf);
 649                                         vertex_count += buf->getVertexCount();
 650                                         meshbuffer_count++;
 651                                         stuff_actually_drawn = true;
 652                                 }
 653                         }
 654                         if(stuff_actually_drawn)
 655                                 blocks_had_pass_meshbuf++;
 656                         else
 657                                 blocks_without_stuff++;
 658                 }
 659 #endif
 660         }
 661         } // ScopeProfiler
 662
 663         // Log only on solid pass because values are the same
 664         if(pass == scene::ESNRP_SOLID){
 665                 g_profiler->avg("CM: animated meshes", mesh_animate_count);
 666                 g_profiler->avg("CM: animated meshes (far)", mesh_animate_count_far);
 667         }
 668
 669         g_profiler->avg(prefix+"vertices drawn", vertex_count);
 670         if(blocks_had_pass_meshbuf != 0)
 671                 g_profiler->avg(prefix+"meshbuffers per block",
 672                                 (float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
 673         if(blocks_drawn != 0)
 674                 g_profiler->avg(prefix+"empty blocks (frac)",
 675                                 (float)blocks_without_stuff / blocks_drawn);
 676
 677         /*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
 678                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
 679 }
 680
 681 static bool getVisibleBrightness(Map *map, v3f p0, v3f dir, float step,
 682                 float step_multiplier, float start_distance, float end_distance,
 683                 INodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 684                 int *result, bool *sunlight_seen)
 685 {
 686         int brightness_sum = 0;
 687         int brightness_count = 0;
 688         float distance = start_distance;
 689         dir.normalize();
 690         v3f pf = p0;
 691         pf += dir * distance;
 692         int noncount = 0;
 693         bool nonlight_seen = false;
 694         bool allow_allowing_non_sunlight_propagates = false;
 695         bool allow_non_sunlight_propagates = false;
 696         // Check content nearly at camera position
 697         {
 698                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 699                 MapNode n = map->getNodeNoEx(p);
 700                 if(ndef->get(n).param_type == CPT_LIGHT &&
 701                                 !ndef->get(n).sunlight_propagates)
 702                         allow_allowing_non_sunlight_propagates = true;
 703         }
 704         // If would start at CONTENT_IGNORE, start closer
 705         {
 706                 v3s16 p = floatToInt(pf, BS);
 707                 MapNode n = map->getNodeNoEx(p);
 708                 if(n.getContent() == CONTENT_IGNORE){
 709                         float newd = 2*BS;
 710                         pf = p0 + dir * 2*newd;
 711                         distance = newd;
 712                         sunlight_min_d = 0;
 713                 }
 714         }
 715         for(int i=0; distance < end_distance; i++){
 716                 pf += dir * step;
 717                 distance += step;
 718                 step *= step_multiplier;
 719
 720                 v3s16 p = floatToInt(pf, BS);
 721                 MapNode n = map->getNodeNoEx(p);
 722                 if(allow_allowing_non_sunlight_propagates && i == 0 &&
 723                                 ndef->get(n).param_type == CPT_LIGHT &&
 724                                 !ndef->get(n).sunlight_propagates){
 725                         allow_non_sunlight_propagates = true;
 726                 }
 727                 if(ndef->get(n).param_type != CPT_LIGHT ||
 728                                 (!ndef->get(n).sunlight_propagates &&
 729                                         !allow_non_sunlight_propagates)){
 730                         nonlight_seen = true;
 731                         noncount++;
 732                         if(noncount >= 4)
 733                                 break;
 734                         continue;
 735                 }
 736                 if(distance >= sunlight_min_d && *sunlight_seen == false
 737                                 && nonlight_seen == false)
 738                         if(n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 739                                 *sunlight_seen = true;
 740                 noncount = 0;
 741                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 742                 brightness_count++;
 743         }
 744         *result = 0;
 745         if(brightness_count == 0)
 746                 return false;
 747         *result = brightness_sum / brightness_count;
 748         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 749                         <<(*result)<<std::endl;*/
 750         return true;
 751 }
 752
 753 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 754                 int oldvalue, bool *sunlight_seen_result)
 755 {
 756         const bool debugprint = false;
 757         INodeDefManager *ndef = m_gamedef->ndef();
 758         static v3f z_directions[50] = {
 759                 v3f(-100, 0, 0)
 760         };
 761         static f32 z_offsets[sizeof(z_directions)/sizeof(*z_directions)] = {
 762                 -1000,
 763         };
 764         if(z_directions[0].X < -99){
 765                 for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 766                         z_directions[i] = v3f(
 767                                 0.01 * myrand_range(-100, 100),
 768                                 1.0,
 769                                 0.01 * myrand_range(-100, 100)
 770                         );
 771                         z_offsets[i] = 0.01 * myrand_range(0,100);
 772                 }
 773         }
 774         if(debugprint)
 775                 std::cerr<<"In goes "<<PP(m_camera_direction)<<", out comes ";
 776         int sunlight_seen_count = 0;
 777         float sunlight_min_d = max_d*0.8;
 778         if(sunlight_min_d > 35*BS)
 779                 sunlight_min_d = 35*BS;
 780         std::vector<int> values;
 781         for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 782                 v3f z_dir = z_directions[i];
 783                 z_dir.normalize();
 784                 core::CMatrix4<f32> a;
 785                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 786                 v3f dir = m_camera_direction;
 787                 a.rotateVect(dir);
 788                 int br = 0;
 789                 float step = BS*1.5;
 790                 if(max_d > 35*BS)
 791                         step = max_d / 35 * 1.5;
 792                 float off = step * z_offsets[i];
 793                 bool sunlight_seen_now = false;
 794                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 795                                 step, 1.0, max_d*0.6+off, max_d, ndef, daylight_factor,
 796                                 sunlight_min_d,
 797                                 &br, &sunlight_seen_now);
 798                 if(sunlight_seen_now)
 799                         sunlight_seen_count++;
 800                 if(!ok)
 801                         continue;
 802                 values.push_back(br);
 803                 // Don't try too much if being in the sun is clear
 804                 if(sunlight_seen_count >= 20)
 805                         break;
 806         }
 807         int brightness_sum = 0;
 808         int brightness_count = 0;
 809         std::sort(values.begin(), values.end());
 810         u32 num_values_to_use = values.size();
 811         if(num_values_to_use >= 10)
 812                 num_values_to_use -= num_values_to_use/2;
 813         else if(num_values_to_use >= 7)
 814                 num_values_to_use -= num_values_to_use/3;
 815         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 816         if(debugprint){
 817                 for(u32 i=0; i < first_value_i; i++)
 818                         std::cerr<<values[i]<<" ";
 819                 std::cerr<<"[";
 820         }
 821         for(u32 i=first_value_i; i < first_value_i+num_values_to_use; i++){
 822                 if(debugprint)
 823                         std::cerr<<values[i]<<" ";
 824                 brightness_sum += values[i];
 825                 brightness_count++;
 826         }
 827         if(debugprint){
 828                 std::cerr<<"]";
 829                 for(u32 i=first_value_i+num_values_to_use; i < values.size(); i++)
 830                         std::cerr<<values[i]<<" ";
 831         }
 832         int ret = 0;
 833         if(brightness_count == 0){
 834                 MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
 835                 if(ndef->get(n).param_type == CPT_LIGHT){
 836                         ret = decode_light(n.getLightBlend(daylight_factor, ndef));
 837                 } else {
 838                         ret = oldvalue;
 839                         //ret = blend_light(255, 0, daylight_factor);
 840                 }
 841         } else {
 842                 /*float pre = (float)brightness_sum / (float)brightness_count;
 843                 float tmp = pre;
 844                 const float d = 0.2;
 845                 pre *= 1.0 + d*2;
 846                 pre -= tmp * d;
 847                 int preint = pre;
 848                 ret = MYMAX(0, MYMIN(255, preint));*/
 849                 ret = brightness_sum / brightness_count;
 850         }
 851         if(debugprint)
 852                 std::cerr<<"Result: "<<ret<<" sunlight_seen_count="
 853                                 <<sunlight_seen_count<<std::endl;
 854         *sunlight_seen_result = (sunlight_seen_count > 0);
 855         return ret;
 856 }
 857
 858 void ClientMap::renderPostFx()
 859 {
 860         INodeDefManager *nodemgr = m_gamedef->ndef();
 861
 862         // Sadly ISceneManager has no "post effects" render pass, in that case we
 863         // could just register for that and handle it in renderMap().
 864
 865         m_camera_mutex.Lock();
 866         v3f camera_position = m_camera_position;
 867         m_camera_mutex.Unlock();
 868
 869         MapNode n = getNodeNoEx(floatToInt(camera_position, BS));
 870
 871         // - If the player is in a solid node, make everything black.
 872         // - If the player is in liquid, draw a semi-transparent overlay.
 873         const ContentFeatures& features = nodemgr->get(n);
 874         video::SColor post_effect_color = features.post_effect_color;
 875         if(features.solidness == 2 && !(g_settings->getBool("noclip") && m_gamedef->checkLocalPrivilege("noclip")))
 876         {
 877                 post_effect_color = video::SColor(255, 0, 0, 0);
 878         }
 879         if (post_effect_color.getAlpha() != 0)
 880         {
 881                 // Draw a full-screen rectangle
 882                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 883                 v2u32 ss = driver->getScreenSize();
 884                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 885                 driver->draw2DRectangle(post_effect_color, rect);
 886         }
 887 }
 888
 889 void ClientMap::PrintInfo(std::ostream &out)
 890 {
 891         out<<"ClientMap: ";
 892 }
 893
 894