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
 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                         float range = 100000 * BS;
 255                         if(m_control.range_all == false)
 256                                 range = m_control.wanted_range * BS;
 257
 258                         float d = 0.0;
 259                         if(isBlockInSight(block->getPos(), camera_position,
 260                                         camera_direction, camera_fov,
 261                                         range, &d) == false)
 262                         {
 263                                 continue;
 264                         }
 265
 266                         // This is ugly (spherical distance limit?)
 267                         /*if(m_control.range_all == false &&
 268                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
 269                                 continue;*/
 270
 271                         blocks_in_range++;
 272
 273                         /*
 274                                 Ignore if mesh doesn't exist
 275                         */
 276                         {
 277                                 //JMutexAutoLock lock(block->mesh_mutex);
 278
 279                                 if(block->mesh == NULL){
 280                                         blocks_in_range_without_mesh++;
 281                                         continue;
 282                                 }
 283                         }
 284
 285                         /*
 286                                 Occlusion culling
 287                         */
 288
 289                         // No occlusion culling when free_move is on and camera is
 290                         // inside ground
 291                         bool occlusion_culling_enabled = true;
 292                         if(g_settings->getBool("free_move")){
 293                                 MapNode n = getNodeNoEx(cam_pos_nodes);
 294                                 if(n.getContent() == CONTENT_IGNORE ||
 295                                                 nodemgr->get(n).solidness == 2)
 296                                         occlusion_culling_enabled = false;
 297                         }
 298
 299                         v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
 300                         cpn += v3s16(MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2);
 301                         float step = BS*1;
 302                         float stepfac = 1.1;
 303                         float startoff = BS*1;
 304                         float endoff = -BS*MAP_BLOCKSIZE*1.42*1.42;
 305                         v3s16 spn = cam_pos_nodes + v3s16(0,0,0);
 306                         s16 bs2 = MAP_BLOCKSIZE/2 + 1;
 307                         u32 needed_count = 1;
 308                         if(
 309                                 occlusion_culling_enabled &&
 310                                 isOccluded(this, spn, cpn + v3s16(0,0,0),
 311                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 312                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,bs2),
 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                         )
 329                         {
 330                                 blocks_occlusion_culled++;
 331                                 continue;
 332                         }
 333
 334                         // This block is in range. Reset usage timer.
 335                         block->resetUsageTimer();
 336
 337                         // Limit block count in case of a sudden increase
 338                         blocks_would_have_drawn++;
 339                         if(blocks_drawn >= m_control.wanted_max_blocks
 340                                         && m_control.range_all == false
 341                                         && d > m_control.wanted_min_range * BS)
 342                                 continue;
 343
 344                         // Add to set
 345                         block->refGrab();
 346                         m_drawlist[block->getPos()] = block;
 347
 348                         sector_blocks_drawn++;
 349                         blocks_drawn++;
 350
 351                 } // foreach sectorblocks
 352
 353                 if(sector_blocks_drawn != 0)
 354                         m_last_drawn_sectors.insert(sp);
 355         }
 356
 357         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
 358         m_control.blocks_drawn = blocks_drawn;
 359
 360         g_profiler->avg("CM: blocks in range", blocks_in_range);
 361         g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
 362         if(blocks_in_range != 0)
 363                 g_profiler->avg("CM: blocks in range without mesh (frac)",
 364                                 (float)blocks_in_range_without_mesh/blocks_in_range);
 365         g_profiler->avg("CM: blocks drawn", blocks_drawn);
 366         g_profiler->avg("CM: wanted max blocks", m_control.wanted_max_blocks);
 367 }
 368
 369 struct MeshBufList
 370 {
 371         video::SMaterial m;
 372         std::list<scene::IMeshBuffer*> bufs;
 373 };
 374
 375 struct MeshBufListList
 376 {
 377         std::list<MeshBufList> lists;
 378
 379         void clear()
 380         {
 381                 lists.clear();
 382         }
 383
 384         void add(scene::IMeshBuffer *buf)
 385         {
 386                 for(std::list<MeshBufList>::iterator i = lists.begin();
 387                                 i != lists.end(); ++i){
 388                         MeshBufList &l = *i;
 389                         if(l.m == buf->getMaterial()){
 390                                 l.bufs.push_back(buf);
 391                                 return;
 392                         }
 393                 }
 394                 MeshBufList l;
 395                 l.m = buf->getMaterial();
 396                 l.bufs.push_back(buf);
 397                 lists.push_back(l);
 398         }
 399 };
 400
 401 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 402 {
 403         DSTACK(__FUNCTION_NAME);
 404
 405         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 406
 407         std::string prefix;
 408         if(pass == scene::ESNRP_SOLID)
 409                 prefix = "CM: solid: ";
 410         else
 411                 prefix = "CM: transparent: ";
 412
 413         /*
 414                 This is called two times per frame, reset on the non-transparent one
 415         */
 416         if(pass == scene::ESNRP_SOLID)
 417         {
 418                 m_last_drawn_sectors.clear();
 419         }
 420
 421         bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
 422         bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
 423         bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 424
 425         /*
 426                 Get time for measuring timeout.
 427
 428                 Measuring time is very useful for long delays when the
 429                 machine is swapping a lot.
 430         */
 431         int time1 = time(0);
 432
 433         /*
 434                 Get animation parameters
 435         */
 436         float animation_time = m_client->getAnimationTime();
 437         int crack = m_client->getCrackLevel();
 438         u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 439
 440         m_camera_mutex.Lock();
 441         v3f camera_position = m_camera_position;
 442         v3f camera_direction = m_camera_direction;
 443         f32 camera_fov = m_camera_fov;
 444         m_camera_mutex.Unlock();
 445
 446         /*
 447                 Get all blocks and draw all visible ones
 448         */
 449
 450         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 451
 452         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 453
 454         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 455         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 456
 457         // Take a fair amount as we will be dropping more out later
 458         // Umm... these additions are a bit strange but they are needed.
 459         v3s16 p_blocks_min(
 460                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 461                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 462                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 463         v3s16 p_blocks_max(
 464                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 465                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 466                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 467
 468         u32 vertex_count = 0;
 469         u32 meshbuffer_count = 0;
 470
 471         // For limiting number of mesh animations per frame
 472         u32 mesh_animate_count = 0;
 473         u32 mesh_animate_count_far = 0;
 474
 475         // Blocks that were drawn and had a mesh
 476         u32 blocks_drawn = 0;
 477         // Blocks which had a corresponding meshbuffer for this pass
 478         u32 blocks_had_pass_meshbuf = 0;
 479         // Blocks from which stuff was actually drawn
 480         u32 blocks_without_stuff = 0;
 481
 482         /*
 483                 Draw the selected MapBlocks
 484         */
 485
 486         {
 487         ScopeProfiler sp(g_profiler, prefix+"drawing blocks", SPT_AVG);
 488
 489         MeshBufListList drawbufs;
 490
 491         for(std::map<v3s16, MapBlock*>::iterator
 492                         i = m_drawlist.begin();
 493                         i != m_drawlist.end(); ++i)
 494         {
 495                 MapBlock *block = i->second;
 496
 497                 // If the mesh of the block happened to get deleted, ignore it
 498                 if(block->mesh == NULL)
 499                         continue;
 500
 501                 float d = 0.0;
 502                 if(isBlockInSight(block->getPos(), camera_position,
 503                                 camera_direction, camera_fov,
 504                                 100000*BS, &d) == false)
 505                 {
 506                         continue;
 507                 }
 508
 509                 // Mesh animation
 510                 {
 511                         //JMutexAutoLock lock(block->mesh_mutex);
 512                         MapBlockMesh *mapBlockMesh = block->mesh;
 513                         assert(mapBlockMesh);
 514                         // Pretty random but this should work somewhat nicely
 515                         bool faraway = d >= BS*50;
 516                         //bool faraway = d >= m_control.wanted_range * BS;
 517                         if(mapBlockMesh->isAnimationForced() ||
 518                                         !faraway ||
 519                                         mesh_animate_count_far < (m_control.range_all ? 200 : 50))
 520                         {
 521                                 bool animated = mapBlockMesh->animate(
 522                                                 faraway,
 523                                                 animation_time,
 524                                                 crack,
 525                                                 daynight_ratio);
 526                                 if(animated)
 527                                         mesh_animate_count++;
 528                                 if(animated && faraway)
 529                                         mesh_animate_count_far++;
 530                         }
 531                         else
 532                         {
 533                                 mapBlockMesh->decreaseAnimationForceTimer();
 534                         }
 535                 }
 536
 537                 /*
 538                         Get the meshbuffers of the block
 539                 */
 540                 {
 541                         //JMutexAutoLock lock(block->mesh_mutex);
 542
 543                         MapBlockMesh *mapBlockMesh = block->mesh;
 544                         assert(mapBlockMesh);
 545
 546                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 547                         assert(mesh);
 548
 549                         u32 c = mesh->getMeshBufferCount();
 550                         for(u32 i=0; i<c; i++)
 551                         {
 552                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 553
 554                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
 555                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
 556                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 557
 558                                 const video::SMaterial& material = buf->getMaterial();
 559                                 video::IMaterialRenderer* rnd =
 560                                                 driver->getMaterialRenderer(material.MaterialType);
 561                                 bool transparent = (rnd && rnd->isTransparent());
 562                                 if(transparent == is_transparent_pass)
 563                                 {
 564                                         if(buf->getVertexCount() == 0)
 565                                                 errorstream<<"Block ["<<analyze_block(block)
 566                                                                 <<"] contains an empty meshbuf"<<std::endl;
 567                                         drawbufs.add(buf);
 568                                 }
 569                         }
 570                 }
 571         }
 572
 573         std::list<MeshBufList> &lists = drawbufs.lists;
 574
 575         int timecheck_counter = 0;
 576         for(std::list<MeshBufList>::iterator i = lists.begin();
 577                         i != lists.end(); ++i)
 578         {
 579                 {
 580                         timecheck_counter++;
 581                         if(timecheck_counter > 50)
 582                         {
 583                                 timecheck_counter = 0;
 584                                 int time2 = time(0);
 585                                 if(time2 > time1 + 4)
 586                                 {
 587                                         infostream<<"ClientMap::renderMap(): "
 588                                                 "Rendering takes ages, returning."
 589                                                 <<std::endl;
 590                                         return;
 591                                 }
 592                         }
 593                 }
 594
 595                 MeshBufList &list = *i;
 596
 597                 driver->setMaterial(list.m);
 598
 599                 for(std::list<scene::IMeshBuffer*>::iterator j = list.bufs.begin();
 600                                 j != list.bufs.end(); ++j)
 601                 {
 602                         scene::IMeshBuffer *buf = *j;
 603                         driver->drawMeshBuffer(buf);
 604                         vertex_count += buf->getVertexCount();
 605                         meshbuffer_count++;
 606                 }
 607 #if 0
 608                 /*
 609                         Draw the faces of the block
 610                 */
 611                 {
 612                         //JMutexAutoLock lock(block->mesh_mutex);
 613
 614                         MapBlockMesh *mapBlockMesh = block->mesh;
 615                         assert(mapBlockMesh);
 616
 617                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 618                         assert(mesh);
 619
 620                         u32 c = mesh->getMeshBufferCount();
 621                         bool stuff_actually_drawn = false;
 622                         for(u32 i=0; i<c; i++)
 623                         {
 624                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 625                                 const video::SMaterial& material = buf->getMaterial();
 626                                 video::IMaterialRenderer* rnd =
 627                                                 driver->getMaterialRenderer(material.MaterialType);
 628                                 bool transparent = (rnd && rnd->isTransparent());
 629                                 // Render transparent on transparent pass and likewise.
 630                                 if(transparent == is_transparent_pass)
 631                                 {
 632                                         if(buf->getVertexCount() == 0)
 633                                                 errorstream<<"Block ["<<analyze_block(block)
 634                                                                 <<"] contains an empty meshbuf"<<std::endl;
 635                                         /*
 636                                                 This *shouldn't* hurt too much because Irrlicht
 637                                                 doesn't change opengl textures if the old
 638                                                 material has the same texture.
 639                                         */
 640                                         driver->setMaterial(buf->getMaterial());
 641                                         driver->drawMeshBuffer(buf);
 642                                         vertex_count += buf->getVertexCount();
 643                                         meshbuffer_count++;
 644                                         stuff_actually_drawn = true;
 645                                 }
 646                         }
 647                         if(stuff_actually_drawn)
 648                                 blocks_had_pass_meshbuf++;
 649                         else
 650                                 blocks_without_stuff++;
 651                 }
 652 #endif
 653         }
 654         } // ScopeProfiler
 655
 656         // Log only on solid pass because values are the same
 657         if(pass == scene::ESNRP_SOLID){
 658                 g_profiler->avg("CM: animated meshes", mesh_animate_count);
 659                 g_profiler->avg("CM: animated meshes (far)", mesh_animate_count_far);
 660         }
 661
 662         g_profiler->avg(prefix+"vertices drawn", vertex_count);
 663         if(blocks_had_pass_meshbuf != 0)
 664                 g_profiler->avg(prefix+"meshbuffers per block",
 665                                 (float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
 666         if(blocks_drawn != 0)
 667                 g_profiler->avg(prefix+"empty blocks (frac)",
 668                                 (float)blocks_without_stuff / blocks_drawn);
 669
 670         /*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
 671                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
 672 }
 673
 674 static bool getVisibleBrightness(Map *map, v3f p0, v3f dir, float step,
 675                 float step_multiplier, float start_distance, float end_distance,
 676                 INodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 677                 int *result, bool *sunlight_seen)
 678 {
 679         int brightness_sum = 0;
 680         int brightness_count = 0;
 681         float distance = start_distance;
 682         dir.normalize();
 683         v3f pf = p0;
 684         pf += dir * distance;
 685         int noncount = 0;
 686         bool nonlight_seen = false;
 687         bool allow_allowing_non_sunlight_propagates = false;
 688         bool allow_non_sunlight_propagates = false;
 689         // Check content nearly at camera position
 690         {
 691                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 692                 MapNode n = map->getNodeNoEx(p);
 693                 if(ndef->get(n).param_type == CPT_LIGHT &&
 694                                 !ndef->get(n).sunlight_propagates)
 695                         allow_allowing_non_sunlight_propagates = true;
 696         }
 697         // If would start at CONTENT_IGNORE, start closer
 698         {
 699                 v3s16 p = floatToInt(pf, BS);
 700                 MapNode n = map->getNodeNoEx(p);
 701                 if(n.getContent() == CONTENT_IGNORE){
 702                         float newd = 2*BS;
 703                         pf = p0 + dir * 2*newd;
 704                         distance = newd;
 705                         sunlight_min_d = 0;
 706                 }
 707         }
 708         for(int i=0; distance < end_distance; i++){
 709                 pf += dir * step;
 710                 distance += step;
 711                 step *= step_multiplier;
 712
 713                 v3s16 p = floatToInt(pf, BS);
 714                 MapNode n = map->getNodeNoEx(p);
 715                 if(allow_allowing_non_sunlight_propagates && i == 0 &&
 716                                 ndef->get(n).param_type == CPT_LIGHT &&
 717                                 !ndef->get(n).sunlight_propagates){
 718                         allow_non_sunlight_propagates = true;
 719                 }
 720                 if(ndef->get(n).param_type != CPT_LIGHT ||
 721                                 (!ndef->get(n).sunlight_propagates &&
 722                                         !allow_non_sunlight_propagates)){
 723                         nonlight_seen = true;
 724                         noncount++;
 725                         if(noncount >= 4)
 726                                 break;
 727                         continue;
 728                 }
 729                 if(distance >= sunlight_min_d && *sunlight_seen == false
 730                                 && nonlight_seen == false)
 731                         if(n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 732                                 *sunlight_seen = true;
 733                 noncount = 0;
 734                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 735                 brightness_count++;
 736         }
 737         *result = 0;
 738         if(brightness_count == 0)
 739                 return false;
 740         *result = brightness_sum / brightness_count;
 741         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 742                         <<(*result)<<std::endl;*/
 743         return true;
 744 }
 745
 746 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 747                 int oldvalue, bool *sunlight_seen_result)
 748 {
 749         const bool debugprint = false;
 750         INodeDefManager *ndef = m_gamedef->ndef();
 751         static v3f z_directions[50] = {
 752                 v3f(-100, 0, 0)
 753         };
 754         static f32 z_offsets[sizeof(z_directions)/sizeof(*z_directions)] = {
 755                 -1000,
 756         };
 757         if(z_directions[0].X < -99){
 758                 for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 759                         z_directions[i] = v3f(
 760                                 0.01 * myrand_range(-100, 100),
 761                                 1.0,
 762                                 0.01 * myrand_range(-100, 100)
 763                         );
 764                         z_offsets[i] = 0.01 * myrand_range(0,100);
 765                 }
 766         }
 767         if(debugprint)
 768                 std::cerr<<"In goes "<<PP(m_camera_direction)<<", out comes ";
 769         int sunlight_seen_count = 0;
 770         float sunlight_min_d = max_d*0.8;
 771         if(sunlight_min_d > 35*BS)
 772                 sunlight_min_d = 35*BS;
 773         std::vector<int> values;
 774         for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 775                 v3f z_dir = z_directions[i];
 776                 z_dir.normalize();
 777                 core::CMatrix4<f32> a;
 778                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 779                 v3f dir = m_camera_direction;
 780                 a.rotateVect(dir);
 781                 int br = 0;
 782                 float step = BS*1.5;
 783                 if(max_d > 35*BS)
 784                         step = max_d / 35 * 1.5;
 785                 float off = step * z_offsets[i];
 786                 bool sunlight_seen_now = false;
 787                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 788                                 step, 1.0, max_d*0.6+off, max_d, ndef, daylight_factor,
 789                                 sunlight_min_d,
 790                                 &br, &sunlight_seen_now);
 791                 if(sunlight_seen_now)
 792                         sunlight_seen_count++;
 793                 if(!ok)
 794                         continue;
 795                 values.push_back(br);
 796                 // Don't try too much if being in the sun is clear
 797                 if(sunlight_seen_count >= 20)
 798                         break;
 799         }
 800         int brightness_sum = 0;
 801         int brightness_count = 0;
 802         std::sort(values.begin(), values.end());
 803         u32 num_values_to_use = values.size();
 804         if(num_values_to_use >= 10)
 805                 num_values_to_use -= num_values_to_use/2;
 806         else if(num_values_to_use >= 7)
 807                 num_values_to_use -= num_values_to_use/3;
 808         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 809         if(debugprint){
 810                 for(u32 i=0; i < first_value_i; i++)
 811                         std::cerr<<values[i]<<" ";
 812                 std::cerr<<"[";
 813         }
 814         for(u32 i=first_value_i; i < first_value_i+num_values_to_use; i++){
 815                 if(debugprint)
 816                         std::cerr<<values[i]<<" ";
 817                 brightness_sum += values[i];
 818                 brightness_count++;
 819         }
 820         if(debugprint){
 821                 std::cerr<<"]";
 822                 for(u32 i=first_value_i+num_values_to_use; i < values.size(); i++)
 823                         std::cerr<<values[i]<<" ";
 824         }
 825         int ret = 0;
 826         if(brightness_count == 0){
 827                 MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
 828                 if(ndef->get(n).param_type == CPT_LIGHT){
 829                         ret = decode_light(n.getLightBlend(daylight_factor, ndef));
 830                 } else {
 831                         ret = oldvalue;
 832                         //ret = blend_light(255, 0, daylight_factor);
 833                 }
 834         } else {
 835                 /*float pre = (float)brightness_sum / (float)brightness_count;
 836                 float tmp = pre;
 837                 const float d = 0.2;
 838                 pre *= 1.0 + d*2;
 839                 pre -= tmp * d;
 840                 int preint = pre;
 841                 ret = MYMAX(0, MYMIN(255, preint));*/
 842                 ret = brightness_sum / brightness_count;
 843         }
 844         if(debugprint)
 845                 std::cerr<<"Result: "<<ret<<" sunlight_seen_count="
 846                                 <<sunlight_seen_count<<std::endl;
 847         *sunlight_seen_result = (sunlight_seen_count > 0);
 848         return ret;
 849 }
 850
 851 void ClientMap::renderPostFx()
 852 {
 853         INodeDefManager *nodemgr = m_gamedef->ndef();
 854
 855         // Sadly ISceneManager has no "post effects" render pass, in that case we
 856         // could just register for that and handle it in renderMap().
 857
 858         m_camera_mutex.Lock();
 859         v3f camera_position = m_camera_position;
 860         m_camera_mutex.Unlock();
 861
 862         MapNode n = getNodeNoEx(floatToInt(camera_position, BS));
 863
 864         // - If the player is in a solid node, make everything black.
 865         // - If the player is in liquid, draw a semi-transparent overlay.
 866         const ContentFeatures& features = nodemgr->get(n);
 867         video::SColor post_effect_color = features.post_effect_color;
 868         if(features.solidness == 2 && !(g_settings->getBool("noclip") && m_gamedef->checkLocalPrivilege("noclip")))
 869         {
 870                 post_effect_color = video::SColor(255, 0, 0, 0);
 871         }
 872         if (post_effect_color.getAlpha() != 0)
 873         {
 874                 // Draw a full-screen rectangle
 875                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 876                 v2u32 ss = driver->getScreenSize();
 877                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 878                 driver->draw2DRectangle(post_effect_color, rect);
 879         }
 880 }
 881
 882 void ClientMap::PrintInfo(std::ostream &out)
 883 {
 884         out<<"ClientMap: ";
 885 }
 886
 887