src/clientmap.cpp

   1 /*
   2 Minetest
   3 Copyright (C) 2010-2013 celeron55, Perttu Ahola <celeron55@gmail.com>
   4
   5 This program is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU Lesser General Public License as published by
   7 the Free Software Foundation; either version 2.1 of the License, or
   8 (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU Lesser General Public License for more details.
  14
  15 You should have received a copy of the GNU Lesser General Public License along
  16 with this program; if not, write to the Free Software Foundation, Inc.,
  17 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 */
  19
  20 #include "clientmap.h"
  21 #include "client.h"
  22 #include "mapblock_mesh.h"
  23 #include <IMaterialRenderer.h>
  24 #include <matrix4.h>
  25 #include "log.h"
  26 #include "mapsector.h"
  27 #include "main.h" // dout_client, g_settings
  28 #include "nodedef.h"
  29 #include "mapblock.h"
  30 #include "profiler.h"
  31 #include "settings.h"
  32 #include "camera.h" // CameraModes
  33 #include "util/mathconstants.h"
  34 #include <algorithm>
  35
  36 #define PP(x) "("<<(x).X<<","<<(x).Y<<","<<(x).Z<<")"
  37
  38 ClientMap::ClientMap(
  39                 Client *client,
  40                 IGameDef *gamedef,
  41                 MapDrawControl &control,
  42                 scene::ISceneNode* parent,
  43                 scene::ISceneManager* mgr,
  44                 s32 id
  45 ):
  46         Map(dout_client, gamedef),
  47         scene::ISceneNode(parent, mgr, id),
  48         m_client(client),
  49         m_control(control),
  50         m_camera_position(0,0,0),
  51         m_camera_direction(0,0,1),
  52         m_camera_fov(M_PI)
  53 {
  54         m_box = core::aabbox3d<f32>(-BS*1000000,-BS*1000000,-BS*1000000,
  55                         BS*1000000,BS*1000000,BS*1000000);
  56 }
  57
  58 ClientMap::~ClientMap()
  59 {
  60         /*JMutexAutoLock lock(mesh_mutex);
  61
  62         if(mesh != NULL)
  63         {
  64                 mesh->drop();
  65                 mesh = NULL;
  66         }*/
  67 }
  68
  69 MapSector * ClientMap::emergeSector(v2s16 p2d)
  70 {
  71         DSTACK(__FUNCTION_NAME);
  72         // Check that it doesn't exist already
  73         try{
  74                 return getSectorNoGenerate(p2d);
  75         }
  76         catch(InvalidPositionException &e)
  77         {
  78         }
  79
  80         // Create a sector
  81         ClientMapSector *sector = new ClientMapSector(this, p2d, m_gamedef);
  82
  83         {
  84                 //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  85                 m_sectors[p2d] = sector;
  86         }
  87
  88         return sector;
  89 }
  90
  91 #if 0
  92 void ClientMap::deSerializeSector(v2s16 p2d, std::istream &is)
  93 {
  94         DSTACK(__FUNCTION_NAME);
  95         ClientMapSector *sector = NULL;
  96
  97         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
  98
  99         core::map<v2s16, MapSector*>::Node *n = m_sectors.find(p2d);
 100
 101         if(n != NULL)
 102         {
 103                 sector = (ClientMapSector*)n->getValue();
 104                 assert(sector->getId() == MAPSECTOR_CLIENT);
 105         }
 106         else
 107         {
 108                 sector = new ClientMapSector(this, p2d);
 109                 {
 110                         //JMutexAutoLock lock(m_sector_mutex); // Bulk comment-out
 111                         m_sectors.insert(p2d, sector);
 112                 }
 113         }
 114
 115         sector->deSerialize(is);
 116 }
 117 #endif
 118
 119 void ClientMap::OnRegisterSceneNode()
 120 {
 121         if(IsVisible)
 122         {
 123                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
 124                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
 125         }
 126
 127         ISceneNode::OnRegisterSceneNode();
 128 }
 129
 130 static bool isOccluded(Map *map, v3s16 p0, v3s16 p1, float step, float stepfac,
 131                 float start_off, float end_off, u32 needed_count, INodeDefManager *nodemgr)
 132 {
 133         float d0 = (float)BS * p0.getDistanceFrom(p1);
 134         v3s16 u0 = p1 - p0;
 135         v3f uf = v3f(u0.X, u0.Y, u0.Z) * BS;
 136         uf.normalize();
 137         v3f p0f = v3f(p0.X, p0.Y, p0.Z) * BS;
 138         u32 count = 0;
 139         for(float s=start_off; s<d0+end_off; s+=step){
 140                 v3f pf = p0f + uf * s;
 141                 v3s16 p = floatToInt(pf, BS);
 142                 MapNode n = map->getNodeNoEx(p);
 143                 bool is_transparent = false;
 144                 const ContentFeatures &f = nodemgr->get(n);
 145                 if(f.solidness == 0)
 146                         is_transparent = (f.visual_solidness != 2);
 147                 else
 148                         is_transparent = (f.solidness != 2);
 149                 if(!is_transparent){
 150                         count++;
 151                         if(count >= needed_count)
 152                                 return true;
 153                 }
 154                 step *= stepfac;
 155         }
 156         return false;
 157 }
 158
 159 void ClientMap::updateDrawList(video::IVideoDriver* driver)
 160 {
 161         ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
 162         g_profiler->add("CM::updateDrawList() count", 1);
 163
 164         INodeDefManager *nodemgr = m_gamedef->ndef();
 165
 166         for(std::map<v3s16, MapBlock*>::iterator
 167                         i = m_drawlist.begin();
 168                         i != m_drawlist.end(); ++i)
 169         {
 170                 MapBlock *block = i->second;
 171                 block->refDrop();
 172         }
 173         m_drawlist.clear();
 174
 175         m_camera_mutex.Lock();
 176         v3f camera_position = m_camera_position;
 177         v3f camera_direction = m_camera_direction;
 178         f32 camera_fov = m_camera_fov;
 179         v3s16 camera_offset = m_camera_offset;
 180         m_camera_mutex.Unlock();
 181
 182         // Use a higher fov to accomodate faster camera movements.
 183         // Blocks are cropped better when they are drawn.
 184         // Or maybe they aren't? Well whatever.
 185         camera_fov *= 1.2;
 186
 187         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 188         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 189         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 190         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 191         // Take a fair amount as we will be dropping more out later
 192         // Umm... these additions are a bit strange but they are needed.
 193         v3s16 p_blocks_min(
 194                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 195                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 196                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 197         v3s16 p_blocks_max(
 198                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 199                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 200                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 201
 202         // Number of blocks in rendering range
 203         u32 blocks_in_range = 0;
 204         // Number of blocks occlusion culled
 205         u32 blocks_occlusion_culled = 0;
 206         // Number of blocks in rendering range but don't have a mesh
 207         u32 blocks_in_range_without_mesh = 0;
 208         // Blocks that had mesh that would have been drawn according to
 209         // rendering range (if max blocks limit didn't kick in)
 210         u32 blocks_would_have_drawn = 0;
 211         // Blocks that were drawn and had a mesh
 212         u32 blocks_drawn = 0;
 213         // Blocks which had a corresponding meshbuffer for this pass
 214         //u32 blocks_had_pass_meshbuf = 0;
 215         // Blocks from which stuff was actually drawn
 216         //u32 blocks_without_stuff = 0;
 217         // Distance to farthest drawn block
 218         float farthest_drawn = 0;
 219
 220         for(std::map<v2s16, MapSector*>::iterator
 221                         si = m_sectors.begin();
 222                         si != m_sectors.end(); ++si)
 223         {
 224                 MapSector *sector = si->second;
 225                 v2s16 sp = sector->getPos();
 226
 227                 if(m_control.range_all == false)
 228                 {
 229                         if(sp.X < p_blocks_min.X
 230                         || sp.X > p_blocks_max.X
 231                         || sp.Y < p_blocks_min.Z
 232                         || sp.Y > p_blocks_max.Z)
 233                                 continue;
 234                 }
 235
 236                 std::list< MapBlock * > sectorblocks;
 237                 sector->getBlocks(sectorblocks);
 238
 239                 /*
 240                         Loop through blocks in sector
 241                 */
 242
 243                 u32 sector_blocks_drawn = 0;
 244
 245                 std::list< MapBlock * >::iterator i;
 246                 for(i=sectorblocks.begin(); i!=sectorblocks.end(); i++)
 247                 {
 248                         MapBlock *block = *i;
 249
 250                         /*
 251                                 Compare block position to camera position, skip
 252                                 if not seen on display
 253                         */
 254
 255                         if (block->mesh != NULL)
 256                                 block->mesh->updateCameraOffset(m_camera_offset);
 257
 258                         float range = 100000 * BS;
 259                         if(m_control.range_all == false)
 260                                 range = m_control.wanted_range * BS;
 261
 262                         float d = 0.0;
 263                         if(isBlockInSight(block->getPos(), camera_position,
 264                                         camera_direction, camera_fov,
 265                                         range, &d) == false)
 266                         {
 267                                 continue;
 268                         }
 269
 270                         // This is ugly (spherical distance limit?)
 271                         /*if(m_control.range_all == false &&
 272                                         d - 0.5*BS*MAP_BLOCKSIZE > range)
 273                                 continue;*/
 274
 275                         blocks_in_range++;
 276
 277                         /*
 278                                 Ignore if mesh doesn't exist
 279                         */
 280                         {
 281                                 //JMutexAutoLock lock(block->mesh_mutex);
 282
 283                                 if(block->mesh == NULL){
 284                                         blocks_in_range_without_mesh++;
 285                                         continue;
 286                                 }
 287                         }
 288
 289                         /*
 290                                 Occlusion culling
 291                         */
 292
 293                         // No occlusion culling when free_move is on and camera is
 294                         // inside ground
 295                         bool occlusion_culling_enabled = true;
 296                         if(g_settings->getBool("free_move")){
 297                                 MapNode n = getNodeNoEx(cam_pos_nodes);
 298                                 if(n.getContent() == CONTENT_IGNORE ||
 299                                                 nodemgr->get(n).solidness == 2)
 300                                         occlusion_culling_enabled = false;
 301                         }
 302
 303                         v3s16 cpn = block->getPos() * MAP_BLOCKSIZE;
 304                         cpn += v3s16(MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2, MAP_BLOCKSIZE/2);
 305                         float step = BS*1;
 306                         float stepfac = 1.1;
 307                         float startoff = BS*1;
 308                         float endoff = -BS*MAP_BLOCKSIZE*1.42*1.42;
 309                         v3s16 spn = cam_pos_nodes + v3s16(0,0,0);
 310                         s16 bs2 = MAP_BLOCKSIZE/2 + 1;
 311                         u32 needed_count = 1;
 312                         if(
 313                                 occlusion_culling_enabled &&
 314                                 isOccluded(this, spn, cpn + v3s16(0,0,0),
 315                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 316                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,bs2),
 317                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 318                                 isOccluded(this, spn, cpn + v3s16(bs2,bs2,-bs2),
 319                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 320                                 isOccluded(this, spn, cpn + v3s16(bs2,-bs2,bs2),
 321                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 322                                 isOccluded(this, spn, cpn + v3s16(bs2,-bs2,-bs2),
 323                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 324                                 isOccluded(this, spn, cpn + v3s16(-bs2,bs2,bs2),
 325                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 326                                 isOccluded(this, spn, cpn + v3s16(-bs2,bs2,-bs2),
 327                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 328                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,bs2),
 329                                         step, stepfac, startoff, endoff, needed_count, nodemgr) &&
 330                                 isOccluded(this, spn, cpn + v3s16(-bs2,-bs2,-bs2),
 331                                         step, stepfac, startoff, endoff, needed_count, nodemgr)
 332                         )
 333                         {
 334                                 blocks_occlusion_culled++;
 335                                 continue;
 336                         }
 337
 338                         // This block is in range. Reset usage timer.
 339                         block->resetUsageTimer();
 340
 341                         // Limit block count in case of a sudden increase
 342                         blocks_would_have_drawn++;
 343                         if(blocks_drawn >= m_control.wanted_max_blocks
 344                                         && m_control.range_all == false
 345                                         && d > m_control.wanted_min_range * BS)
 346                                 continue;
 347
 348                         // Add to set
 349                         block->refGrab();
 350                         m_drawlist[block->getPos()] = block;
 351
 352                         sector_blocks_drawn++;
 353                         blocks_drawn++;
 354                         if(d/BS > farthest_drawn)
 355                                 farthest_drawn = d/BS;
 356
 357                 } // foreach sectorblocks
 358
 359                 if(sector_blocks_drawn != 0)
 360                         m_last_drawn_sectors.insert(sp);
 361         }
 362
 363         m_control.blocks_would_have_drawn = blocks_would_have_drawn;
 364         m_control.blocks_drawn = blocks_drawn;
 365         m_control.farthest_drawn = farthest_drawn;
 366
 367         g_profiler->avg("CM: blocks in range", blocks_in_range);
 368         g_profiler->avg("CM: blocks occlusion culled", blocks_occlusion_culled);
 369         if(blocks_in_range != 0)
 370                 g_profiler->avg("CM: blocks in range without mesh (frac)",
 371                                 (float)blocks_in_range_without_mesh/blocks_in_range);
 372         g_profiler->avg("CM: blocks drawn", blocks_drawn);
 373         g_profiler->avg("CM: farthest drawn", farthest_drawn);
 374         g_profiler->avg("CM: wanted max blocks", m_control.wanted_max_blocks);
 375 }
 376
 377 struct MeshBufList
 378 {
 379         video::SMaterial m;
 380         std::list<scene::IMeshBuffer*> bufs;
 381 };
 382
 383 struct MeshBufListList
 384 {
 385         std::list<MeshBufList> lists;
 386
 387         void clear()
 388         {
 389                 lists.clear();
 390         }
 391
 392         void add(scene::IMeshBuffer *buf)
 393         {
 394                 for(std::list<MeshBufList>::iterator i = lists.begin();
 395                                 i != lists.end(); ++i){
 396                         MeshBufList &l = *i;
 397                         video::SMaterial &m = buf->getMaterial();
 398
 399                         // comparing a full material is quite expensive so we don't do it if
 400                         // not even first texture is equal
 401                         if (l.m.TextureLayer[0].Texture != m.TextureLayer[0].Texture)
 402                                 continue;
 403
 404                         if (l.m == m) {
 405                                 l.bufs.push_back(buf);
 406                                 return;
 407                         }
 408                 }
 409                 MeshBufList l;
 410                 l.m = buf->getMaterial();
 411                 l.bufs.push_back(buf);
 412                 lists.push_back(l);
 413         }
 414 };
 415
 416 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 417 {
 418         DSTACK(__FUNCTION_NAME);
 419
 420         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 421
 422         std::string prefix;
 423         if(pass == scene::ESNRP_SOLID)
 424                 prefix = "CM: solid: ";
 425         else
 426                 prefix = "CM: transparent: ";
 427
 428         /*
 429                 This is called two times per frame, reset on the non-transparent one
 430         */
 431         if(pass == scene::ESNRP_SOLID)
 432         {
 433                 m_last_drawn_sectors.clear();
 434         }
 435
 436         bool use_trilinear_filter = g_settings->getBool("trilinear_filter");
 437         bool use_bilinear_filter = g_settings->getBool("bilinear_filter");
 438         bool use_anisotropic_filter = g_settings->getBool("anisotropic_filter");
 439
 440         /*
 441                 Get time for measuring timeout.
 442
 443                 Measuring time is very useful for long delays when the
 444                 machine is swapping a lot.
 445         */
 446         int time1 = time(0);
 447
 448         /*
 449                 Get animation parameters
 450         */
 451         float animation_time = m_client->getAnimationTime();
 452         int crack = m_client->getCrackLevel();
 453         u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 454
 455         m_camera_mutex.Lock();
 456         v3f camera_position = m_camera_position;
 457         v3f camera_direction = m_camera_direction;
 458         f32 camera_fov = m_camera_fov;
 459         m_camera_mutex.Unlock();
 460
 461         /*
 462                 Get all blocks and draw all visible ones
 463         */
 464
 465         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 466
 467         v3s16 box_nodes_d = m_control.wanted_range * v3s16(1,1,1);
 468
 469         v3s16 p_nodes_min = cam_pos_nodes - box_nodes_d;
 470         v3s16 p_nodes_max = cam_pos_nodes + box_nodes_d;
 471
 472         // Take a fair amount as we will be dropping more out later
 473         // Umm... these additions are a bit strange but they are needed.
 474         v3s16 p_blocks_min(
 475                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 476                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 477                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 478         v3s16 p_blocks_max(
 479                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 480                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 481                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 482
 483         u32 vertex_count = 0;
 484         u32 meshbuffer_count = 0;
 485
 486         // For limiting number of mesh animations per frame
 487         u32 mesh_animate_count = 0;
 488         u32 mesh_animate_count_far = 0;
 489
 490         // Blocks that were drawn and had a mesh
 491         u32 blocks_drawn = 0;
 492         // Blocks which had a corresponding meshbuffer for this pass
 493         u32 blocks_had_pass_meshbuf = 0;
 494         // Blocks from which stuff was actually drawn
 495         u32 blocks_without_stuff = 0;
 496
 497         /*
 498                 Draw the selected MapBlocks
 499         */
 500
 501         {
 502         ScopeProfiler sp(g_profiler, prefix+"drawing blocks", SPT_AVG);
 503
 504         MeshBufListList drawbufs;
 505
 506         for(std::map<v3s16, MapBlock*>::iterator
 507                         i = m_drawlist.begin();
 508                         i != m_drawlist.end(); ++i)
 509         {
 510                 MapBlock *block = i->second;
 511
 512                 // If the mesh of the block happened to get deleted, ignore it
 513                 if(block->mesh == NULL)
 514                         continue;
 515
 516                 float d = 0.0;
 517                 if(isBlockInSight(block->getPos(), camera_position,
 518                                 camera_direction, camera_fov,
 519                                 100000*BS, &d) == false)
 520                 {
 521                         continue;
 522                 }
 523
 524                 // Mesh animation
 525                 {
 526                         //JMutexAutoLock lock(block->mesh_mutex);
 527                         MapBlockMesh *mapBlockMesh = block->mesh;
 528                         assert(mapBlockMesh);
 529                         // Pretty random but this should work somewhat nicely
 530                         bool faraway = d >= BS*50;
 531                         //bool faraway = d >= m_control.wanted_range * BS;
 532                         if(mapBlockMesh->isAnimationForced() ||
 533                                         !faraway ||
 534                                         mesh_animate_count_far < (m_control.range_all ? 200 : 50))
 535                         {
 536                                 bool animated = mapBlockMesh->animate(
 537                                                 faraway,
 538                                                 animation_time,
 539                                                 crack,
 540                                                 daynight_ratio);
 541                                 if(animated)
 542                                         mesh_animate_count++;
 543                                 if(animated && faraway)
 544                                         mesh_animate_count_far++;
 545                         }
 546                         else
 547                         {
 548                                 mapBlockMesh->decreaseAnimationForceTimer();
 549                         }
 550                 }
 551
 552                 /*
 553                         Get the meshbuffers of the block
 554                 */
 555                 {
 556                         //JMutexAutoLock lock(block->mesh_mutex);
 557
 558                         MapBlockMesh *mapBlockMesh = block->mesh;
 559                         assert(mapBlockMesh);
 560
 561                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 562                         assert(mesh);
 563
 564                         u32 c = mesh->getMeshBufferCount();
 565                         for(u32 i=0; i<c; i++)
 566                         {
 567                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 568
 569                                 buf->getMaterial().setFlag(video::EMF_TRILINEAR_FILTER, use_trilinear_filter);
 570                                 buf->getMaterial().setFlag(video::EMF_BILINEAR_FILTER, use_bilinear_filter);
 571                                 buf->getMaterial().setFlag(video::EMF_ANISOTROPIC_FILTER, use_anisotropic_filter);
 572
 573                                 const video::SMaterial& material = buf->getMaterial();
 574                                 video::IMaterialRenderer* rnd =
 575                                                 driver->getMaterialRenderer(material.MaterialType);
 576                                 bool transparent = (rnd && rnd->isTransparent());
 577                                 if(transparent == is_transparent_pass)
 578                                 {
 579                                         if(buf->getVertexCount() == 0)
 580                                                 errorstream<<"Block ["<<analyze_block(block)
 581                                                                 <<"] contains an empty meshbuf"<<std::endl;
 582                                         drawbufs.add(buf);
 583                                 }
 584                         }
 585                 }
 586         }
 587
 588         std::list<MeshBufList> &lists = drawbufs.lists;
 589
 590         int timecheck_counter = 0;
 591         for(std::list<MeshBufList>::iterator i = lists.begin();
 592                         i != lists.end(); ++i)
 593         {
 594                 {
 595                         timecheck_counter++;
 596                         if(timecheck_counter > 50)
 597                         {
 598                                 timecheck_counter = 0;
 599                                 int time2 = time(0);
 600                                 if(time2 > time1 + 4)
 601                                 {
 602                                         infostream<<"ClientMap::renderMap(): "
 603                                                 "Rendering takes ages, returning."
 604                                                 <<std::endl;
 605                                         return;
 606                                 }
 607                         }
 608                 }
 609
 610                 MeshBufList &list = *i;
 611
 612                 driver->setMaterial(list.m);
 613
 614                 for(std::list<scene::IMeshBuffer*>::iterator j = list.bufs.begin();
 615                                 j != list.bufs.end(); ++j)
 616                 {
 617                         scene::IMeshBuffer *buf = *j;
 618                         driver->drawMeshBuffer(buf);
 619                         vertex_count += buf->getVertexCount();
 620                         meshbuffer_count++;
 621                 }
 622 #if 0
 623                 /*
 624                         Draw the faces of the block
 625                 */
 626                 {
 627                         //JMutexAutoLock lock(block->mesh_mutex);
 628
 629                         MapBlockMesh *mapBlockMesh = block->mesh;
 630                         assert(mapBlockMesh);
 631
 632                         scene::SMesh *mesh = mapBlockMesh->getMesh();
 633                         assert(mesh);
 634
 635                         u32 c = mesh->getMeshBufferCount();
 636                         bool stuff_actually_drawn = false;
 637                         for(u32 i=0; i<c; i++)
 638                         {
 639                                 scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 640                                 const video::SMaterial& material = buf->getMaterial();
 641                                 video::IMaterialRenderer* rnd =
 642                                                 driver->getMaterialRenderer(material.MaterialType);
 643                                 bool transparent = (rnd && rnd->isTransparent());
 644                                 // Render transparent on transparent pass and likewise.
 645                                 if(transparent == is_transparent_pass)
 646                                 {
 647                                         if(buf->getVertexCount() == 0)
 648                                                 errorstream<<"Block ["<<analyze_block(block)
 649                                                                 <<"] contains an empty meshbuf"<<std::endl;
 650                                         /*
 651                                                 This *shouldn't* hurt too much because Irrlicht
 652                                                 doesn't change opengl textures if the old
 653                                                 material has the same texture.
 654                                         */
 655                                         driver->setMaterial(buf->getMaterial());
 656                                         driver->drawMeshBuffer(buf);
 657                                         vertex_count += buf->getVertexCount();
 658                                         meshbuffer_count++;
 659                                         stuff_actually_drawn = true;
 660                                 }
 661                         }
 662                         if(stuff_actually_drawn)
 663                                 blocks_had_pass_meshbuf++;
 664                         else
 665                                 blocks_without_stuff++;
 666                 }
 667 #endif
 668         }
 669         } // ScopeProfiler
 670
 671         // Log only on solid pass because values are the same
 672         if(pass == scene::ESNRP_SOLID){
 673                 g_profiler->avg("CM: animated meshes", mesh_animate_count);
 674                 g_profiler->avg("CM: animated meshes (far)", mesh_animate_count_far);
 675         }
 676
 677         g_profiler->avg(prefix+"vertices drawn", vertex_count);
 678         if(blocks_had_pass_meshbuf != 0)
 679                 g_profiler->avg(prefix+"meshbuffers per block",
 680                                 (float)meshbuffer_count / (float)blocks_had_pass_meshbuf);
 681         if(blocks_drawn != 0)
 682                 g_profiler->avg(prefix+"empty blocks (frac)",
 683                                 (float)blocks_without_stuff / blocks_drawn);
 684
 685         /*infostream<<"renderMap(): is_transparent_pass="<<is_transparent_pass
 686                         <<", rendered "<<vertex_count<<" vertices."<<std::endl;*/
 687 }
 688
 689 static bool getVisibleBrightness(Map *map, v3f p0, v3f dir, float step,
 690                 float step_multiplier, float start_distance, float end_distance,
 691                 INodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 692                 int *result, bool *sunlight_seen)
 693 {
 694         int brightness_sum = 0;
 695         int brightness_count = 0;
 696         float distance = start_distance;
 697         dir.normalize();
 698         v3f pf = p0;
 699         pf += dir * distance;
 700         int noncount = 0;
 701         bool nonlight_seen = false;
 702         bool allow_allowing_non_sunlight_propagates = false;
 703         bool allow_non_sunlight_propagates = false;
 704         // Check content nearly at camera position
 705         {
 706                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 707                 MapNode n = map->getNodeNoEx(p);
 708                 if(ndef->get(n).param_type == CPT_LIGHT &&
 709                                 !ndef->get(n).sunlight_propagates)
 710                         allow_allowing_non_sunlight_propagates = true;
 711         }
 712         // If would start at CONTENT_IGNORE, start closer
 713         {
 714                 v3s16 p = floatToInt(pf, BS);
 715                 MapNode n = map->getNodeNoEx(p);
 716                 if(n.getContent() == CONTENT_IGNORE){
 717                         float newd = 2*BS;
 718                         pf = p0 + dir * 2*newd;
 719                         distance = newd;
 720                         sunlight_min_d = 0;
 721                 }
 722         }
 723         for(int i=0; distance < end_distance; i++){
 724                 pf += dir * step;
 725                 distance += step;
 726                 step *= step_multiplier;
 727
 728                 v3s16 p = floatToInt(pf, BS);
 729                 MapNode n = map->getNodeNoEx(p);
 730                 if(allow_allowing_non_sunlight_propagates && i == 0 &&
 731                                 ndef->get(n).param_type == CPT_LIGHT &&
 732                                 !ndef->get(n).sunlight_propagates){
 733                         allow_non_sunlight_propagates = true;
 734                 }
 735                 if(ndef->get(n).param_type != CPT_LIGHT ||
 736                                 (!ndef->get(n).sunlight_propagates &&
 737                                         !allow_non_sunlight_propagates)){
 738                         nonlight_seen = true;
 739                         noncount++;
 740                         if(noncount >= 4)
 741                                 break;
 742                         continue;
 743                 }
 744                 if(distance >= sunlight_min_d && *sunlight_seen == false
 745                                 && nonlight_seen == false)
 746                         if(n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 747                                 *sunlight_seen = true;
 748                 noncount = 0;
 749                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 750                 brightness_count++;
 751         }
 752         *result = 0;
 753         if(brightness_count == 0)
 754                 return false;
 755         *result = brightness_sum / brightness_count;
 756         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 757                         <<(*result)<<std::endl;*/
 758         return true;
 759 }
 760
 761 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 762                 int oldvalue, bool *sunlight_seen_result)
 763 {
 764         const bool debugprint = false;
 765         INodeDefManager *ndef = m_gamedef->ndef();
 766         static v3f z_directions[50] = {
 767                 v3f(-100, 0, 0)
 768         };
 769         static f32 z_offsets[sizeof(z_directions)/sizeof(*z_directions)] = {
 770                 -1000,
 771         };
 772         if(z_directions[0].X < -99){
 773                 for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 774                         z_directions[i] = v3f(
 775                                 0.01 * myrand_range(-100, 100),
 776                                 1.0,
 777                                 0.01 * myrand_range(-100, 100)
 778                         );
 779                         z_offsets[i] = 0.01 * myrand_range(0,100);
 780                 }
 781         }
 782         if(debugprint)
 783                 std::cerr<<"In goes "<<PP(m_camera_direction)<<", out comes ";
 784         int sunlight_seen_count = 0;
 785         float sunlight_min_d = max_d*0.8;
 786         if(sunlight_min_d > 35*BS)
 787                 sunlight_min_d = 35*BS;
 788         std::vector<int> values;
 789         for(u32 i=0; i<sizeof(z_directions)/sizeof(*z_directions); i++){
 790                 v3f z_dir = z_directions[i];
 791                 z_dir.normalize();
 792                 core::CMatrix4<f32> a;
 793                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 794                 v3f dir = m_camera_direction;
 795                 a.rotateVect(dir);
 796                 int br = 0;
 797                 float step = BS*1.5;
 798                 if(max_d > 35*BS)
 799                         step = max_d / 35 * 1.5;
 800                 float off = step * z_offsets[i];
 801                 bool sunlight_seen_now = false;
 802                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 803                                 step, 1.0, max_d*0.6+off, max_d, ndef, daylight_factor,
 804                                 sunlight_min_d,
 805                                 &br, &sunlight_seen_now);
 806                 if(sunlight_seen_now)
 807                         sunlight_seen_count++;
 808                 if(!ok)
 809                         continue;
 810                 values.push_back(br);
 811                 // Don't try too much if being in the sun is clear
 812                 if(sunlight_seen_count >= 20)
 813                         break;
 814         }
 815         int brightness_sum = 0;
 816         int brightness_count = 0;
 817         std::sort(values.begin(), values.end());
 818         u32 num_values_to_use = values.size();
 819         if(num_values_to_use >= 10)
 820                 num_values_to_use -= num_values_to_use/2;
 821         else if(num_values_to_use >= 7)
 822                 num_values_to_use -= num_values_to_use/3;
 823         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 824         if(debugprint){
 825                 for(u32 i=0; i < first_value_i; i++)
 826                         std::cerr<<values[i]<<" ";
 827                 std::cerr<<"[";
 828         }
 829         for(u32 i=first_value_i; i < first_value_i+num_values_to_use; i++){
 830                 if(debugprint)
 831                         std::cerr<<values[i]<<" ";
 832                 brightness_sum += values[i];
 833                 brightness_count++;
 834         }
 835         if(debugprint){
 836                 std::cerr<<"]";
 837                 for(u32 i=first_value_i+num_values_to_use; i < values.size(); i++)
 838                         std::cerr<<values[i]<<" ";
 839         }
 840         int ret = 0;
 841         if(brightness_count == 0){
 842                 MapNode n = getNodeNoEx(floatToInt(m_camera_position, BS));
 843                 if(ndef->get(n).param_type == CPT_LIGHT){
 844                         ret = decode_light(n.getLightBlend(daylight_factor, ndef));
 845                 } else {
 846                         ret = oldvalue;
 847                         //ret = blend_light(255, 0, daylight_factor);
 848                 }
 849         } else {
 850                 /*float pre = (float)brightness_sum / (float)brightness_count;
 851                 float tmp = pre;
 852                 const float d = 0.2;
 853                 pre *= 1.0 + d*2;
 854                 pre -= tmp * d;
 855                 int preint = pre;
 856                 ret = MYMAX(0, MYMIN(255, preint));*/
 857                 ret = brightness_sum / brightness_count;
 858         }
 859         if(debugprint)
 860                 std::cerr<<"Result: "<<ret<<" sunlight_seen_count="
 861                                 <<sunlight_seen_count<<std::endl;
 862         *sunlight_seen_result = (sunlight_seen_count > 0);
 863         return ret;
 864 }
 865
 866 void ClientMap::renderPostFx(CameraMode cam_mode)
 867 {
 868         INodeDefManager *nodemgr = m_gamedef->ndef();
 869
 870         // Sadly ISceneManager has no "post effects" render pass, in that case we
 871         // could just register for that and handle it in renderMap().
 872
 873         m_camera_mutex.Lock();
 874         v3f camera_position = m_camera_position;
 875         m_camera_mutex.Unlock();
 876
 877         MapNode n = getNodeNoEx(floatToInt(camera_position, BS));
 878
 879         // - If the player is in a solid node, make everything black.
 880         // - If the player is in liquid, draw a semi-transparent overlay.
 881         // - Do not if player is in third person mode
 882         const ContentFeatures& features = nodemgr->get(n);
 883         video::SColor post_effect_color = features.post_effect_color;
 884         if(features.solidness == 2 && !(g_settings->getBool("noclip") &&
 885                         m_gamedef->checkLocalPrivilege("noclip")) &&
 886                         cam_mode == CAMERA_MODE_FIRST)
 887         {
 888                 post_effect_color = video::SColor(255, 0, 0, 0);
 889         }
 890         if (post_effect_color.getAlpha() != 0)
 891         {
 892                 // Draw a full-screen rectangle
 893                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 894                 v2u32 ss = driver->getScreenSize();
 895                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 896                 driver->draw2DRectangle(post_effect_color, rect);
 897         }
 898 }
 899
 900 void ClientMap::PrintInfo(std::ostream &out)
 901 {
 902         out<<"ClientMap: ";
 903 }
 904
 905