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         m_camera_mutex.Unlock();
 179
 180         // Use a higher fov to accomodate faster camera movements.
 181         // Blocks are cropped better when they are drawn.
 182         // Or maybe they aren't? Well whatever.
 183         camera_fov *= 1.2;
 184
 185         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 186         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 187         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 188         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 189         // Take a fair amount as we will be dropping more out later
 190         // Umm... these additions are a bit strange but they are needed.
 191         v3s16 p_blocks_min(
 192                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 193                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 194                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 195         v3s16 p_blocks_max(
 196                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 197                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 198                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 199
 200         // Number of blocks in rendering range
 201         u32 blocks_in_range = 0;
 202         // Number of blocks occlusion culled
 203         u32 blocks_occlusion_culled = 0;
 204         // Number of blocks in rendering range but don't have a mesh
 205         u32 blocks_in_range_without_mesh = 0;
 206         // Blocks that had mesh that would have been drawn according to
 207         // rendering range (if max blocks limit didn't kick in)
 208         u32 blocks_would_have_drawn = 0;
 209         // Blocks that were drawn and had a mesh
 210         u32 blocks_drawn = 0;
 211         // Blocks which had a corresponding meshbuffer for this pass
 212         //u32 blocks_had_pass_meshbuf = 0;
 213         // Blocks from which stuff was actually drawn
 214         //u32 blocks_without_stuff = 0;
 215         // Distance to farthest drawn block
 216         float farthest_drawn = 0;
 217
 218         for(std::map<v2s16, MapSector*>::iterator
 219                         si = m_sectors.begin();
 220                         si != m_sectors.end(); ++si)
 221         {
 222                 MapSector *sector = si->second;
 223                 v2s16 sp = sector->getPos();
 224
 225                 if(m_control.range_all == false)
 226                 {
 227                         if(sp.X < p_blocks_min.X
 228                         || sp.X > p_blocks_max.X
 229                         || sp.Y < p_blocks_min.Z
 230                         || sp.Y > p_blocks_max.Z)
 231                                 continue;
 232                 }
 233
 234                 std::list< MapBlock * > sectorblocks;
 235                 sector->getBlocks(sectorblocks);
 236
 237                 /*
 238                         Loop through blocks in sector
 239                 */
 240
 241                 u32 sector_blocks_drawn = 0;
 242
 243                 std::list< MapBlock * >::iterator i;
 244                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
 245                 {
 246                         MapBlock *block = *i;
 247
 248                         /*
 249                                 Compare block position to camera position, skip
 250                                 if not seen on display
 251                         */
 252
 253                         float range = 100000 * BS;
 254                         if(m_control.range_all == false)
 255                                 range = m_control.wanted_range * BS;
 256
 257                         float d = 0.0;
 258                         if(isBlockInSight(block->getPos(), camera_position,
 259                                         camera_direction, camera_fov,
 260                                         range, &d) == false)
 261                         {
 262                                 continue;
 263                         }
 264
 265                         // This is ugly (spherical distance limit?)
 266                         /*if(m_control.range_all == false &&
 267                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
 268                                 continue;*/
 269
 270                         blocks_in_range++;
 271
 272                         /*
 273                                 Ignore if mesh doesn't exist
 274                         */
 275                         {
 276                                 //JMutexAutoLock lock(block->mesh_mutex);
 277
 278                                 if(block->mesh == NULL){
 279                                         blocks_in_range_without_mesh++;
 280                                         continue;
 281                                 }
 282                         }
 283
 284                         /*
 285                                 Occlusion culling
 286                         */
 287
 288                         // No occlusion culling when free_move is on and camera is
 289                         // inside ground
 290                         bool occlusion_culling_enabled = true;
 291                         if(g_settings->getBool("free_move")){
 292                                 MapNode n = getNodeNoEx(cam_pos_nodes);
 293                                 if(n.getContent() == CONTENT_IGNORE ||
 294                                                 nodemgr->get(n).solidness == 2)
 295                                         occlusion_culling_enabled = false;
 296                         }
 297
 298                         v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
 299                         cpn += v3s16(MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2);
 300                         float step = BS*1;
 301                         float stepfac = 1.1;
 302                         float startoff = BS*1;
 303                         float endoff = -BS*MAP_BLOCKSIZE*1.42*1.42;
 304                         v3s16 spn = cam_pos_nodes + v3s16(0,0,0);
 305                         s16 bs2 = MAP_BLOCKSIZE/2 + 1;
 306                         u32 needed_count = 1;
 307                         if(
 308                                 occlusion_culling_enabled &&
 309                                 isOccluded(this, spn, cpn + v3s16(0,0,0),
 310                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 311                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,bs2),
 312                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 313                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,-bs2),
 314                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 315                                 isOccluded(this, spn, cpn + v3s16(bs2,-bs2,bs2),
 316                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 317                                 isOccluded(this, spn, cpn + v3s16(bs2,-bs2,-bs2),
 318                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 319                                 isOccluded(this, spn, cpn + v3s16(-bs2,bs2,bs2),
 320                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 321                                 isOccluded(this, spn, cpn + v3s16(-bs2,bs2,-bs2),
 322                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 323                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,bs2),
 324                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 325                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,-bs2),
 326                                         step, stepfac, startoff, endoff, needed_count, nodemgr)
 327                         )
 328                         {
 329                                 blocks_occlusion_culled++;
 330                                 continue;
 331                         }
 332
 333                         // This block is in range. Reset usage timer.
 334                         block->resetUsageTimer();
 335
 336                         // Limit block count in case of a sudden increase
 337                         blocks_would_have_drawn++;
 338                         if(blocks_drawn >= m_control.wanted_max_blocks
 339                                         && m_control.range_all == false
 340                                         && d > m_control.wanted_min_range * BS)
 341                                 continue;
 342
 343                         // Add to set
 344                         block->refGrab();
 345                         m_drawlist[block->getPos()] = block;
 346
 347                         sector_blocks_drawn++;
 348                         blocks_drawn++;
 349                         if(d/BS > farthest_drawn)
 350                                 farthest_drawn = d/BS;
 351
 352                 } // foreach sectorblocks
 353
 354                 if(sector_blocks_drawn != 0)
 355                         m_last_drawn_sectors.insert(sp);
 356         }
 357
 358         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
 359         m_control.blocks_drawn = blocks_drawn;
 360         m_control.farthest_drawn = farthest_drawn;
 361
 362         g_profiler->avg("CM: blocks in range", blocks_in_range);
 363         g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
 364         if(blocks_in_range != 0)
 365                 g_profiler->avg("CM: blocks in range without mesh (frac)",
 366                                 (float)blocks_in_range_without_mesh/blocks_in_range);
 367         g_profiler->avg("CM: blocks drawn", blocks_drawn);
 368         g_profiler->avg("CM: farthest drawn", farthest_drawn);
 369         g_profiler->avg("CM: wanted max blocks", m_control.wanted_max_blocks);
 370 }
 371
 372 struct MeshBufList
 373 {
 374         video::SMaterial m;
 375         std::list<scene::IMeshBuffer*> bufs;
 376 };
 377
 378 struct MeshBufListList
 379 {
 380         std::list<MeshBufList> lists;
 381
 382         void clear()
 383         {
 384                 lists.clear();
 385         }
 386
 387         void add(scene::IMeshBuffer *buf)
 388         {
 389                 for(std::list<MeshBufList>::iterator i = lists.begin();
 390                                 i != lists.end(); ++i){
 391                         MeshBufList &l = *i;
 392                         if(l.m == buf->getMaterial()){
 393                                 l.bufs.push_back(buf);
 394                                 return;
 395                         }
 396                 }
 397                 MeshBufList l;
 398                 l.m = buf->getMaterial();
 399                 l.bufs.push_back(buf);
 400                 lists.push_back(l);
 401         }
 402 };
 403
 404 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 405 {
 406         DSTACK(__FUNCTION_NAME);
 407
 408         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 409
 410         std::string prefix;
 411         if(pass == scene::ESNRP_SOLID)
 412                 prefix = "CM: solid: ";
 413         else
 414                 prefix = "CM: transparent: ";
 415
 416         /*
 417                 This is called two times per frame, reset on the non-transparent one
 418         */
 419         if(pass == scene::ESNRP_SOLID)
 420         {
 421                 m_last_drawn_sectors.clear();
 422         }
 423
 424         bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
 425         bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
 426         bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 427
 428         /*
 429                 Get time for measuring timeout.
 430
 431                 Measuring time is very useful for long delays when the
 432                 machine is swapping a lot.
 433         */
 434         int time1 = time(0);
 435
 436         /*
 437                 Get animation parameters
 438         */
 439         float animation_time = m_client->getAnimationTime();
 440         int crack = m_client->getCrackLevel();
 441         u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 442
 443         m_camera_mutex.Lock();
 444         v3f camera_position = m_camera_position;
 445         v3f camera_direction = m_camera_direction;
 446         f32 camera_fov = m_camera_fov;
 447         m_camera_mutex.Unlock();
 448
 449         /*
 450                 Get all blocks and draw all visible ones
 451         */
 452
 453         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 454
 455         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 456
 457         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 458         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 459
 460         // Take a fair amount as we will be dropping more out later
 461         // Umm... these additions are a bit strange but they are needed.
 462         v3s16 p_blocks_min(
 463                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 464                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 465                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 466         v3s16 p_blocks_max(
 467                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 468                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 469                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 470
 471         u32 vertex_count = 0;
 472         u32 meshbuffer_count = 0;
 473
 474         // For limiting number of mesh animations per frame
 475         u32 mesh_animate_count = 0;
 476         u32 mesh_animate_count_far = 0;
 477
 478         // Blocks that were drawn and had a mesh
 479         u32 blocks_drawn = 0;
 480         // Blocks which had a corresponding meshbuffer for this pass
 481         u32 blocks_had_pass_meshbuf = 0;
 482         // Blocks from which stuff was actually drawn
 483         u32 blocks_without_stuff = 0;
 484
 485         /*
 486                 Draw the selected MapBlocks
 487         */
 488
 489         {
 490         ScopeProfiler sp(g_profiler, prefix+"drawing blocks", SPT_AVG);
 491
 492         MeshBufListList drawbufs;
 493
 494         for(std::map<v3s16, MapBlock*>::iterator
 495                         i = m_drawlist.begin();
 496                         i != m_drawlist.end(); ++i)
 497         {
 498                 MapBlock *block = i->second;
 499
 500                 // If the mesh of the block happened to get deleted, ignore it
 501                 if(block->mesh == NULL)
 502                         continue;
 503
 504                 float d = 0.0;
 505                 if(isBlockInSight(block->getPos(), camera_position,
 506                                 camera_direction, camera_fov,
 507                                 100000*BS, &d) == false)
 508                 {
 509                         continue;
 510                 }
 511
 512                 // Mesh animation
 513                 {
 514                         //JMutexAutoLock lock(block->mesh_mutex);
 515                         MapBlockMesh *mapBlockMesh = block->mesh;
 516                         assert(mapBlockMesh);
 517                         // Pretty random but this should work somewhat nicely
 518                         bool faraway = d >= BS*50;
 519                         //bool faraway = d >= m_control.wanted_range * BS;
 520                         if(mapBlockMesh->isAnimationForced() ||
 521                                         !faraway ||
 522                                         mesh_animate_count_far < (m_control.range_all ? 200 : 50))
 523                         {
 524                                 bool animated = mapBlockMesh->animate(
 525                                                 faraway,
 526                                                 animation_time,
 527                                                 crack,
 528                                                 daynight_ratio);
 529                                 if(animated)
 530                                         mesh_animate_count++;
 531                                 if(animated && faraway)
 532                                         mesh_animate_count_far++;
 533                         }
 534                         else
 535                         {
 536                                 mapBlockMesh->decreaseAnimationForceTimer();
 537                         }
 538                 }
 539
 540                 /*
 541                         Get the meshbuffers of the block
 542                 */
 543                 {
 544                         //JMutexAutoLock lock(block->mesh_mutex);
 545
 546                         MapBlockMesh *mapBlockMesh = block->mesh;
 547                         assert(mapBlockMesh);
 548
 549                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 550                         assert(mesh);
 551
 552                         u32 c = mesh->getMeshBufferCount();
 553                         for(u32 i=0; i<c; i++)
 554                         {
 555                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 556
 557                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
 558                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
 559                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 560
 561                                 const video::SMaterial& material = buf->getMaterial();
 562                                 video::IMaterialRenderer* rnd =
 563                                                 driver->getMaterialRenderer(material.MaterialType);
 564                                 bool transparent = (rnd && rnd->isTransparent());
 565                                 if(transparent == is_transparent_pass)
 566                                 {
 567                                         if(buf->getVertexCount() == 0)
 568                                                 errorstream<<"Block ["<<analyze_block(block)
 569                                                                 <<"] contains an empty meshbuf"<<std::endl;
 570                                         drawbufs.add(buf);
 571                                 }
 572                         }
 573                 }
 574         }
 575
 576         std::list<MeshBufList> &lists = drawbufs.lists;
 577
 578         int timecheck_counter = 0;
 579         for(std::list<MeshBufList>::iterator i = lists.begin();
 580                         i != lists.end(); ++i)
 581         {
 582                 {
 583                         timecheck_counter++;
 584                         if(timecheck_counter > 50)
 585                         {
 586                                 timecheck_counter = 0;
 587                                 int time2 = time(0);
 588                                 if(time2 > time1 + 4)
 589                                 {
 590                                         infostream<<"ClientMap::renderMap(): "
 591                                                 "Rendering takes ages, returning."
 592                                                 <<std::endl;
 593                                         return;
 594                                 }
 595                         }
 596                 }
 597
 598                 MeshBufList &list = *i;
 599
 600                 driver->setMaterial(list.m);
 601
 602                 for(std::list<scene::IMeshBuffer*>::iterator j = list.bufs.begin();
 603                                 j != list.bufs.end(); ++j)
 604                 {
 605                         scene::IMeshBuffer *buf = *j;
 606                         driver->drawMeshBuffer(buf);
 607                         vertex_count += buf->getVertexCount();
 608                         meshbuffer_count++;
 609                 }
 610 #if 0
 611                 /*
 612                         Draw the faces of the block
 613                 */
 614                 {
 615                         //JMutexAutoLock lock(block->mesh_mutex);
 616
 617                         MapBlockMesh *mapBlockMesh = block->mesh;
 618                         assert(mapBlockMesh);
 619
 620                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 621                         assert(mesh);
 622
 623                         u32 c = mesh->getMeshBufferCount();
 624                         bool stuff_actually_drawn = false;
 625                         for(u32 i=0; i<c; i++)
 626                         {
 627                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 628                                 const video::SMaterial& material = buf->getMaterial();
 629                                 video::IMaterialRenderer* rnd =
 630                                                 driver->getMaterialRenderer(material.MaterialType);
 631                                 bool transparent = (rnd && rnd->isTransparent());
 632                                 // Render transparent on transparent pass and likewise.
 633                                 if(transparent == is_transparent_pass)
 634                                 {
 635                                         if(buf->getVertexCount() == 0)
 636                                                 errorstream<<"Block ["<<analyze_block(block)
 637                                                                 <<"] contains an empty meshbuf"<<std::endl;
 638                                         /*
 639                                                 This *shouldn't* hurt too much because Irrlicht
 640                                                 doesn't change opengl textures if the old
 641                                                 material has the same texture.
 642                                         */
 643                                         driver->setMaterial(buf->getMaterial());
 644                                         driver->drawMeshBuffer(buf);
 645                                         vertex_count += buf->getVertexCount();
 646                                         meshbuffer_count++;
 647                                         stuff_actually_drawn = true;
 648                                 }
 649                         }
 650                         if(stuff_actually_drawn)
 651                                 blocks_had_pass_meshbuf++;
 652                         else
 653                                 blocks_without_stuff++;
 654                 }
 655 #endif
 656         }
 657         } // ScopeProfiler
 658
 659         // Log only on solid pass because values are the same
 660         if(pass == scene::ESNRP_SOLID){
 661                 g_profiler->avg("CM: animated meshes", mesh_animate_count);
 662                 g_profiler->avg("CM: animated meshes (far)", mesh_animate_count_far);
 663         }
 664
 665         g_profiler->avg(prefix+"vertices drawn", vertex_count);
 666         if(blocks_had_pass_meshbuf != 0)
 667                 g_profiler->avg(prefix+"meshbuffers per block",
 668                                 (float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
 669         if(blocks_drawn != 0)
 670                 g_profiler->avg(prefix+"empty blocks (frac)",
 671                                 (float)blocks_without_stuff / blocks_drawn);
 672
 673         /*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
 674                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
 675 }
 676
 677 static bool getVisibleBrightness(Map *map, v3f p0, v3f dir, float step,
 678                 float step_multiplier, float start_distance, float end_distance,
 679                 INodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 680                 int *result, bool *sunlight_seen)
 681 {
 682         int brightness_sum = 0;
 683         int brightness_count = 0;
 684         float distance = start_distance;
 685         dir.normalize();
 686         v3f pf = p0;
 687         pf += dir * distance;
 688         int noncount = 0;
 689         bool nonlight_seen = false;
 690         bool allow_allowing_non_sunlight_propagates = false;
 691         bool allow_non_sunlight_propagates = false;
 692         // Check content nearly at camera position
 693         {
 694                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 695                 MapNode n = map->getNodeNoEx(p);
 696                 if(ndef->get(n).param_type == CPT_LIGHT &&
 697                                 !ndef->get(n).sunlight_propagates)
 698                         allow_allowing_non_sunlight_propagates = true;
 699         }
 700         // If would start at CONTENT_IGNORE, start closer
 701         {
 702                 v3s16 p = floatToInt(pf, BS);
 703                 MapNode n = map->getNodeNoEx(p);
 704                 if(n.getContent() == CONTENT_IGNORE){
 705                         float newd = 2*BS;
 706                         pf = p0 + dir * 2*newd;
 707                         distance = newd;
 708                         sunlight_min_d = 0;
 709                 }
 710         }
 711         for(int i=0; distance < end_distance; i++){
 712                 pf += dir * step;
 713                 distance += step;
 714                 step *= step_multiplier;
 715
 716                 v3s16 p = floatToInt(pf, BS);
 717                 MapNode n = map->getNodeNoEx(p);
 718                 if(allow_allowing_non_sunlight_propagates && i == 0 &&
 719                                 ndef->get(n).param_type == CPT_LIGHT &&
 720                                 !ndef->get(n).sunlight_propagates){
 721                         allow_non_sunlight_propagates = true;
 722                 }
 723                 if(ndef->get(n).param_type != CPT_LIGHT ||
 724                                 (!ndef->get(n).sunlight_propagates &&
 725                                         !allow_non_sunlight_propagates)){
 726                         nonlight_seen = true;
 727                         noncount++;
 728                         if(noncount >= 4)
 729                                 break;
 730                         continue;
 731                 }
 732                 if(distance >= sunlight_min_d && *sunlight_seen == false
 733                                 && nonlight_seen == false)
 734                         if(n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 735                                 *sunlight_seen = true;
 736                 noncount = 0;
 737                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 738                 brightness_count++;
 739         }
 740         *result = 0;
 741         if(brightness_count == 0)
 742                 return false;
 743         *result = brightness_sum / brightness_count;
 744         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 745                         <<(*result)<<std::endl;*/
 746         return true;
 747 }
 748
 749 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 750                 int oldvalue, bool *sunlight_seen_result)
 751 {
 752         const bool debugprint = false;
 753         INodeDefManager *ndef = m_gamedef->ndef();
 754         static v3f z_directions[50] = {
 755                 v3f(-100, 0, 0)
 756         };
 757         static f32 z_offsets[sizeof(z_directions)/sizeof(*z_directions)] = {
 758                 -1000,
 759         };
 760         if(z_directions[0].X < -99){
 761                 for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 762                         z_directions[i] = v3f(
 763                                 0.01 * myrand_range(-100, 100),
 764                                 1.0,
 765                                 0.01 * myrand_range(-100, 100)
 766                         );
 767                         z_offsets[i] = 0.01 * myrand_range(0,100);
 768                 }
 769         }
 770         if(debugprint)
 771                 std::cerr<<"In goes "<<PP(m_camera_direction)<<", out comes ";
 772         int sunlight_seen_count = 0;
 773         float sunlight_min_d = max_d*0.8;
 774         if(sunlight_min_d > 35*BS)
 775                 sunlight_min_d = 35*BS;
 776         std::vector<int> values;
 777         for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 778                 v3f z_dir = z_directions[i];
 779                 z_dir.normalize();
 780                 core::CMatrix4<f32> a;
 781                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 782                 v3f dir = m_camera_direction;
 783                 a.rotateVect(dir);
 784                 int br = 0;
 785                 float step = BS*1.5;
 786                 if(max_d > 35*BS)
 787                         step = max_d / 35 * 1.5;
 788                 float off = step * z_offsets[i];
 789                 bool sunlight_seen_now = false;
 790                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 791                                 step, 1.0, max_d*0.6+off, max_d, ndef, daylight_factor,
 792                                 sunlight_min_d,
 793                                 &br, &sunlight_seen_now);
 794                 if(sunlight_seen_now)
 795                         sunlight_seen_count++;
 796                 if(!ok)
 797                         continue;
 798                 values.push_back(br);
 799                 // Don't try too much if being in the sun is clear
 800                 if(sunlight_seen_count >= 20)
 801                         break;
 802         }
 803         int brightness_sum = 0;
 804         int brightness_count = 0;
 805         std::sort(values.begin(), values.end());
 806         u32 num_values_to_use = values.size();
 807         if(num_values_to_use >= 10)
 808                 num_values_to_use -= num_values_to_use/2;
 809         else if(num_values_to_use >= 7)
 810                 num_values_to_use -= num_values_to_use/3;
 811         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 812         if(debugprint){
 813                 for(u32 i=0; i < first_value_i; i++)
 814                         std::cerr<<values[i]<<" ";
 815                 std::cerr<<"[";
 816         }
 817         for(u32 i=first_value_i; i < first_value_i+num_values_to_use; i++){
 818                 if(debugprint)
 819                         std::cerr<<values[i]<<" ";
 820                 brightness_sum += values[i];
 821                 brightness_count++;
 822         }
 823         if(debugprint){
 824                 std::cerr<<"]";
 825                 for(u32 i=first_value_i+num_values_to_use; i < values.size(); i++)
 826                         std::cerr<<values[i]<<" ";
 827         }
 828         int ret = 0;
 829         if(brightness_count == 0){
 830                 MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
 831                 if(ndef->get(n).param_type == CPT_LIGHT){
 832                         ret = decode_light(n.getLightBlend(daylight_factor, ndef));
 833                 } else {
 834                         ret = oldvalue;
 835                         //ret = blend_light(255, 0, daylight_factor);
 836                 }
 837         } else {
 838                 /*float pre = (float)brightness_sum / (float)brightness_count;
 839                 float tmp = pre;
 840                 const float d = 0.2;
 841                 pre *= 1.0 + d*2;
 842                 pre -= tmp * d;
 843                 int preint = pre;
 844                 ret = MYMAX(0, MYMIN(255, preint));*/
 845                 ret = brightness_sum / brightness_count;
 846         }
 847         if(debugprint)
 848                 std::cerr<<"Result: "<<ret<<" sunlight_seen_count="
 849                                 <<sunlight_seen_count<<std::endl;
 850         *sunlight_seen_result = (sunlight_seen_count > 0);
 851         return ret;
 852 }
 853
 854 void ClientMap::renderPostFx()
 855 {
 856         INodeDefManager *nodemgr = m_gamedef->ndef();
 857
 858         // Sadly ISceneManager has no "post effects" render pass, in that case we
 859         // could just register for that and handle it in renderMap().
 860
 861         m_camera_mutex.Lock();
 862         v3f camera_position = m_camera_position;
 863         m_camera_mutex.Unlock();
 864
 865         MapNode n = getNodeNoEx(floatToInt(camera_position, BS));
 866
 867         // - If the player is in a solid node, make everything black.
 868         // - If the player is in liquid, draw a semi-transparent overlay.
 869         const ContentFeatures& features = nodemgr->get(n);
 870         video::SColor post_effect_color = features.post_effect_color;
 871         if(features.solidness == 2 && !(g_settings->getBool("noclip") && m_gamedef->checkLocalPrivilege("noclip")))
 872         {
 873                 post_effect_color = video::SColor(255, 0, 0, 0);
 874         }
 875         if (post_effect_color.getAlpha() != 0)
 876         {
 877                 // Draw a full-screen rectangle
 878                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 879                 v2u32 ss = driver->getScreenSize();
 880                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 881                 driver->draw2DRectangle(post_effect_color, rect);
 882         }
 883 }
 884
 885 void ClientMap::PrintInfo(std::ostream &out)
 886 {
 887         out<<"ClientMap: ";
 888 }
 889
 890