src/client/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 "mapsector.h"
  26 #include "mapblock.h"
  27 #include "profiler.h"
  28 #include "settings.h"
  29 #include "camera.h"               // CameraModes
  30 #include "util/basic_macros.h"
  31 #include <algorithm>
  32 #include "client/renderingengine.h"
  33
  34 // struct MeshBufListList
  35 void MeshBufListList::clear()
  36 {
  37         for (auto &list : lists)
  38                 list.clear();
  39 }
  40
  41 void MeshBufListList::add(scene::IMeshBuffer *buf, v3s16 position, u8 layer)
  42 {
  43         // Append to the correct layer
  44         std::vector<MeshBufList> &list = lists[layer];
  45         const video::SMaterial &m = buf->getMaterial();
  46         for (MeshBufList &l : list) {
  47                 // comparing a full material is quite expensive so we don't do it if
  48                 // not even first texture is equal
  49                 if (l.m.TextureLayer[0].Texture != m.TextureLayer[0].Texture)
  50                         continue;
  51
  52                 if (l.m == m) {
  53                         l.bufs.emplace_back(position, buf);
  54                         return;
  55                 }
  56         }
  57         MeshBufList l;
  58         l.m = m;
  59         l.bufs.emplace_back(position, buf);
  60         list.emplace_back(l);
  61 }
  62
  63 // ClientMap
  64
  65 ClientMap::ClientMap(
  66                 Client *client,
  67                 RenderingEngine *rendering_engine,
  68                 MapDrawControl &control,
  69                 s32 id
  70 ):
  71         Map(client),
  72         scene::ISceneNode(rendering_engine->get_scene_manager()->getRootSceneNode(),
  73                 rendering_engine->get_scene_manager(), id),
  74         m_client(client),
  75         m_rendering_engine(rendering_engine),
  76         m_control(control),
  77         m_drawlist(MapBlockComparer(v3s16(0,0,0)))
  78 {
  79
  80         /*
  81          * @Liso: Sadly C++ doesn't have introspection, so the only way we have to know
  82          * the class is whith a name ;) Name property cames from ISceneNode base class.
  83          */
  84         Name = "ClientMap";
  85         m_box = aabb3f(-BS*1000000,-BS*1000000,-BS*1000000,
  86                         BS*1000000,BS*1000000,BS*1000000);
  87
  88         /* TODO: Add a callback function so these can be updated when a setting
  89          *       changes.  At this point in time it doesn't matter (e.g. /set
  90          *       is documented to change server settings only)
  91          *
  92          * TODO: Local caching of settings is not optimal and should at some stage
  93          *       be updated to use a global settings object for getting thse values
  94          *       (as opposed to the this local caching). This can be addressed in
  95          *       a later release.
  96          */
  97         m_cache_trilinear_filter  = g_settings->getBool("trilinear_filter");
  98         m_cache_bilinear_filter   = g_settings->getBool("bilinear_filter");
  99         m_cache_anistropic_filter = g_settings->getBool("anisotropic_filter");
 100         m_cache_transparency_sorting_distance = g_settings->getU16("transparency_sorting_distance");
 101
 102 }
 103
 104 void ClientMap::updateCamera(v3f pos, v3f dir, f32 fov, v3s16 offset)
 105 {
 106         v3s16 previous_node = floatToInt(m_camera_position, BS) + m_camera_offset;
 107         v3s16 previous_block = getContainerPos(previous_node, MAP_BLOCKSIZE);
 108
 109         m_camera_position = pos;
 110         m_camera_direction = dir;
 111         m_camera_fov = fov;
 112         m_camera_offset = offset;
 113
 114         v3s16 current_node = floatToInt(m_camera_position, BS) + m_camera_offset;
 115         v3s16 current_block = getContainerPos(current_node, MAP_BLOCKSIZE);
 116
 117         // reorder the blocks when camera crosses block boundary
 118         if (previous_block != current_block)
 119                 m_needs_update_drawlist = true;
 120
 121         // reorder transparent meshes when camera crosses node boundary
 122         if (previous_node != current_node)
 123                 m_needs_update_transparent_meshes = true;
 124 }
 125
 126 MapSector * ClientMap::emergeSector(v2s16 p2d)
 127 {
 128         // Check that it doesn't exist already
 129         MapSector *sector = getSectorNoGenerate(p2d);
 130
 131         // Create it if it does not exist yet
 132         if (!sector) {
 133                 sector = new MapSector(this, p2d, m_gamedef);
 134                 m_sectors[p2d] = sector;
 135         }
 136
 137         return sector;
 138 }
 139
 140 void ClientMap::OnRegisterSceneNode()
 141 {
 142         if(IsVisible)
 143         {
 144                 SceneManager->registerNodeForRendering(this, scene::ESNRP_SOLID);
 145                 SceneManager->registerNodeForRendering(this, scene::ESNRP_TRANSPARENT);
 146         }
 147
 148         ISceneNode::OnRegisterSceneNode();
 149
 150         if (!m_added_to_shadow_renderer) {
 151                 m_added_to_shadow_renderer = true;
 152                 if (auto shadows = m_rendering_engine->get_shadow_renderer())
 153                         shadows->addNodeToShadowList(this);
 154         }
 155 }
 156
 157 void ClientMap::getBlocksInViewRange(v3s16 cam_pos_nodes,
 158                 v3s16 *p_blocks_min, v3s16 *p_blocks_max, float range)
 159 {
 160         if (range <= 0.0f)
 161                 range = m_control.wanted_range;
 162
 163         v3s16 box_nodes_d = range * v3s16(1, 1, 1);
 164         // Define p_nodes_min/max as v3s32 because 'cam_pos_nodes -/+ box_nodes_d'
 165         // can exceed the range of v3s16 when a large view range is used near the
 166         // world edges.
 167         v3s32 p_nodes_min(
 168                 cam_pos_nodes.X - box_nodes_d.X,
 169                 cam_pos_nodes.Y - box_nodes_d.Y,
 170                 cam_pos_nodes.Z - box_nodes_d.Z);
 171         v3s32 p_nodes_max(
 172                 cam_pos_nodes.X + box_nodes_d.X,
 173                 cam_pos_nodes.Y + box_nodes_d.Y,
 174                 cam_pos_nodes.Z + box_nodes_d.Z);
 175         // Take a fair amount as we will be dropping more out later
 176         // Umm... these additions are a bit strange but they are needed.
 177         *p_blocks_min = v3s16(
 178                         p_nodes_min.X / MAP_BLOCKSIZE - 3,
 179                         p_nodes_min.Y / MAP_BLOCKSIZE - 3,
 180                         p_nodes_min.Z / MAP_BLOCKSIZE - 3);
 181         *p_blocks_max = v3s16(
 182                         p_nodes_max.X / MAP_BLOCKSIZE + 1,
 183                         p_nodes_max.Y / MAP_BLOCKSIZE + 1,
 184                         p_nodes_max.Z / MAP_BLOCKSIZE + 1);
 185 }
 186
 187 void ClientMap::updateDrawList()
 188 {
 189         ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
 190
 191         m_needs_update_drawlist = false;
 192
 193         for (auto &i : m_drawlist) {
 194                 MapBlock *block = i.second;
 195                 block->refDrop();
 196         }
 197         m_drawlist.clear();
 198
 199         const v3f camera_position = m_camera_position;
 200         const v3f camera_direction = m_camera_direction;
 201
 202         // Use a higher fov to accomodate faster camera movements.
 203         // Blocks are cropped better when they are drawn.
 204         const f32 camera_fov = m_camera_fov * 1.1f;
 205
 206         v3s16 cam_pos_nodes = floatToInt(camera_position, BS);
 207
 208         v3s16 p_blocks_min;
 209         v3s16 p_blocks_max;
 210         getBlocksInViewRange(cam_pos_nodes, &p_blocks_min, &p_blocks_max);
 211
 212         // Read the vision range, unless unlimited range is enabled.
 213         float range = m_control.range_all ? 1e7 : m_control.wanted_range;
 214
 215         // Number of blocks currently loaded by the client
 216         u32 blocks_loaded = 0;
 217         // Number of blocks with mesh in rendering range
 218         u32 blocks_in_range_with_mesh = 0;
 219         // Number of blocks occlusion culled
 220         u32 blocks_occlusion_culled = 0;
 221
 222         // No occlusion culling when free_move is on and camera is
 223         // inside ground
 224         bool occlusion_culling_enabled = true;
 225         if ((g_settings->getBool("free_move") && g_settings->getBool("noclip")) || g_settings->getBool("freecam")) {
 226                 MapNode n = getNode(cam_pos_nodes);
 227                 if (n.getContent() == CONTENT_IGNORE ||
 228                                 m_nodedef->get(n).solidness == 2)
 229                         occlusion_culling_enabled = false;
 230         }
 231
 232         v3s16 camera_block = getContainerPos(cam_pos_nodes, MAP_BLOCKSIZE);
 233         m_drawlist = std::map<v3s16, MapBlock*, MapBlockComparer>(MapBlockComparer(camera_block));
 234
 235         // Uncomment to debug occluded blocks in the wireframe mode
 236         // TODO: Include this as a flag for an extended debugging setting
 237         //if (occlusion_culling_enabled && m_control.show_wireframe)
 238         //    occlusion_culling_enabled = porting::getTimeS() & 1;
 239
 240         for (const auto &sector_it : m_sectors) {
 241                 MapSector *sector = sector_it.second;
 242                 v2s16 sp = sector->getPos();
 243
 244                 blocks_loaded += sector->size();
 245                 if (!m_control.range_all) {
 246                         if (sp.X < p_blocks_min.X || sp.X > p_blocks_max.X ||
 247                                         sp.Y < p_blocks_min.Z || sp.Y > p_blocks_max.Z)
 248                                 continue;
 249                 }
 250
 251                 MapBlockVect sectorblocks;
 252                 sector->getBlocks(sectorblocks);
 253
 254                 /*
 255                         Loop through blocks in sector
 256                 */
 257
 258                 u32 sector_blocks_drawn = 0;
 259
 260                 for (MapBlock *block : sectorblocks) {
 261                         /*
 262                                 Compare block position to camera position, skip
 263                                 if not seen on display
 264                         */
 265
 266                         if (!block->mesh) {
 267                                 // Ignore if mesh doesn't exist
 268                                 continue;
 269                         }
 270
 271                         v3s16 block_coord = block->getPos();
 272                         v3s16 block_position = block->getPosRelative() + MAP_BLOCKSIZE / 2;
 273
 274                         // First, perform a simple distance check, with a padding of one extra block.
 275                         if (!m_control.range_all &&
 276                                         block_position.getDistanceFrom(cam_pos_nodes) > range + MAP_BLOCKSIZE)
 277                                 continue; // Out of range, skip.
 278
 279                         // Keep the block alive as long as it is in range.
 280                         block->resetUsageTimer();
 281                         blocks_in_range_with_mesh++;
 282
 283                         // Frustum culling
 284                         float d = 0.0;
 285                         if (!isBlockInSight(block_coord, camera_position,
 286                                         camera_direction, camera_fov, range * BS, &d))
 287                                 continue;
 288
 289                         // Occlusion culling
 290                         if ((!m_control.range_all && d > m_control.wanted_range * BS) ||
 291                                         (occlusion_culling_enabled && isBlockOccluded(block, cam_pos_nodes))) {
 292                                 blocks_occlusion_culled++;
 293                                 continue;
 294                         }
 295
 296                         // Add to set
 297                         block->refGrab();
 298                         m_drawlist[block_coord] = block;
 299
 300                         sector_blocks_drawn++;
 301                 } // foreach sectorblocks
 302
 303                 if (sector_blocks_drawn != 0)
 304                         m_last_drawn_sectors.insert(sp);
 305         }
 306
 307         g_profiler->avg("MapBlock meshes in range [#]", blocks_in_range_with_mesh);
 308         g_profiler->avg("MapBlocks occlusion culled [#]", blocks_occlusion_culled);
 309         g_profiler->avg("MapBlocks drawn [#]", m_drawlist.size());
 310         g_profiler->avg("MapBlocks loaded [#]", blocks_loaded);
 311 }
 312
 313 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 314 {
 315         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 316
 317         std::string prefix;
 318         if (pass == scene::ESNRP_SOLID)
 319                 prefix = "renderMap(SOLID): ";
 320         else
 321                 prefix = "renderMap(TRANSPARENT): ";
 322
 323         /*
 324                 This is called two times per frame, reset on the non-transparent one
 325         */
 326         if (pass == scene::ESNRP_SOLID)
 327                 m_last_drawn_sectors.clear();
 328
 329         /*
 330                 Get animation parameters
 331         */
 332         const float animation_time = m_client->getAnimationTime();
 333         const int crack = m_client->getCrackLevel();
 334         const u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 335
 336         const v3f camera_position = m_camera_position;
 337
 338         /*
 339                 Get all blocks and draw all visible ones
 340         */
 341
 342         u32 vertex_count = 0;
 343         u32 drawcall_count = 0;
 344
 345         // For limiting number of mesh animations per frame
 346         u32 mesh_animate_count = 0;
 347         //u32 mesh_animate_count_far = 0;
 348
 349         /*
 350                 Update transparent meshes
 351         */
 352         if (is_transparent_pass)
 353                 updateTransparentMeshBuffers();
 354
 355         /*
 356                 Draw the selected MapBlocks
 357         */
 358
 359         MeshBufListList grouped_buffers;
 360         std::vector<DrawDescriptor> draw_order;
 361         video::SMaterial previous_material;
 362
 363         for (auto &i : m_drawlist) {
 364                 v3s16 block_pos = i.first;
 365                 MapBlock *block = i.second;
 366
 367                 // If the mesh of the block happened to get deleted, ignore it
 368                 if (!block->mesh)
 369                         continue;
 370
 371                 v3f block_pos_r = intToFloat(block->getPosRelative() + MAP_BLOCKSIZE / 2, BS);
 372                 float d = camera_position.getDistanceFrom(block_pos_r);
 373                 d = MYMAX(0,d - BLOCK_MAX_RADIUS);
 374
 375                 // Mesh animation
 376                 if (pass == scene::ESNRP_SOLID) {
 377                         MapBlockMesh *mapBlockMesh = block->mesh;
 378                         assert(mapBlockMesh);
 379                         // Pretty random but this should work somewhat nicely
 380                         bool faraway = d >= BS * 50;
 381                         if (mapBlockMesh->isAnimationForced() || !faraway ||
 382                                         mesh_animate_count < (m_control.range_all ? 200 : 50)) {
 383
 384                                 bool animated = mapBlockMesh->animate(faraway, animation_time,
 385                                         crack, daynight_ratio);
 386                                 if (animated)
 387                                         mesh_animate_count++;
 388                         } else {
 389                                 mapBlockMesh->decreaseAnimationForceTimer();
 390                         }
 391                 }
 392
 393                 /*
 394                         Get the meshbuffers of the block
 395                 */
 396                 if (is_transparent_pass) {
 397                         // In transparent pass, the mesh will give us
 398                         // the partial buffers in the correct order
 399                         for (auto &buffer : block->mesh->getTransparentBuffers())
 400                                 draw_order.emplace_back(block_pos, &buffer);
 401                 }
 402                 else {
 403                         // otherwise, group buffers across meshes
 404                         // using MeshBufListList
 405                         MapBlockMesh *mapBlockMesh = block->mesh;
 406                         assert(mapBlockMesh);
 407
 408                         for (int layer = 0; layer < MAX_TILE_LAYERS; layer++) {
 409                                 scene::IMesh *mesh = mapBlockMesh->getMesh(layer);
 410                                 assert(mesh);
 411
 412                                 u32 c = mesh->getMeshBufferCount();
 413                                 for (u32 i = 0; i < c; i++) {
 414                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 415
 416                                         video::SMaterial& material = buf->getMaterial();
 417                                         video::IMaterialRenderer* rnd =
 418                                                         driver->getMaterialRenderer(material.MaterialType);
 419                                         bool transparent = (rnd && rnd->isTransparent());
 420                                         if (!transparent) {
 421                                                 if (buf->getVertexCount() == 0)
 422                                                         errorstream << "Block [" << analyze_block(block)
 423                                                                         << "] contains an empty meshbuf" << std::endl;
 424
 425                                                 grouped_buffers.add(buf, block_pos, layer);
 426                                         }
 427                                 }
 428                         }
 429                 }
 430         }
 431
 432         // Capture draw order for all solid meshes
 433         for (auto &lists : grouped_buffers.lists) {
 434                 for (MeshBufList &list : lists) {
 435                         // iterate in reverse to draw closest blocks first
 436                         for (auto it = list.bufs.rbegin(); it != list.bufs.rend(); ++it) {
 437                                 draw_order.emplace_back(it->first, it->second, it != list.bufs.rbegin());
 438                         }
 439                 }
 440         }
 441
 442         TimeTaker draw("Drawing mesh buffers");
 443
 444         core::matrix4 m; // Model matrix
 445         v3f offset = intToFloat(m_camera_offset, BS);
 446         u32 material_swaps = 0;
 447
 448         // Render all mesh buffers in order
 449         drawcall_count += draw_order.size();
 450
 451         for (auto &descriptor : draw_order) {
 452                 scene::IMeshBuffer *buf;
 453
 454                 if (descriptor.m_use_partial_buffer) {
 455                         descriptor.m_partial_buffer->beforeDraw();
 456                         buf = descriptor.m_partial_buffer->getBuffer();
 457                 }
 458                 else {
 459                         buf = descriptor.m_buffer;
 460                 }
 461
 462                 // Check and abort if the machine is swapping a lot
 463                 if (draw.getTimerTime() > 2000) {
 464                         infostream << "ClientMap::renderMap(): Rendering took >2s, " <<
 465                                         "returning." << std::endl;
 466                         return;
 467                 }
 468
 469                 if (!descriptor.m_reuse_material) {
 470                         auto &material = buf->getMaterial();
 471
 472                         // Apply filter settings
 473                         material.setFlag(video::EMF_TRILINEAR_FILTER,
 474                                 m_cache_trilinear_filter);
 475                         material.setFlag(video::EMF_BILINEAR_FILTER,
 476                                 m_cache_bilinear_filter);
 477                         material.setFlag(video::EMF_ANISOTROPIC_FILTER,
 478                                 m_cache_anistropic_filter);
 479                         material.setFlag(video::EMF_WIREFRAME,
 480                                 m_control.show_wireframe);
 481
 482                         // pass the shadow map texture to the buffer texture
 483                         ShadowRenderer *shadow = m_rendering_engine->get_shadow_renderer();
 484                         if (shadow && shadow->is_active()) {
 485                                 auto &layer = material.TextureLayer[3];
 486                                 layer.Texture = shadow->get_texture();
 487                                 layer.TextureWrapU = video::E_TEXTURE_CLAMP::ETC_CLAMP_TO_EDGE;
 488                                 layer.TextureWrapV = video::E_TEXTURE_CLAMP::ETC_CLAMP_TO_EDGE;
 489                                 // Do not enable filter on shadow texture to avoid visual artifacts
 490                                 // with colored shadows.
 491                                 // Filtering is done in shader code anyway
 492                                 layer.TrilinearFilter = false;
 493                         }
 494                         driver->setMaterial(material);
 495                         ++material_swaps;
 496                 }
 497
 498                 v3f block_wpos = intToFloat(descriptor.m_pos * MAP_BLOCKSIZE, BS);
 499                 m.setTranslation(block_wpos - offset);
 500
 501                 driver->setTransform(video::ETS_WORLD, m);
 502                 driver->drawMeshBuffer(buf);
 503                 vertex_count += buf->getIndexCount();
 504         }
 505
 506         g_profiler->avg(prefix + "draw meshes [ms]", draw.stop(true));
 507
 508         // Log only on solid pass because values are the same
 509         if (pass == scene::ESNRP_SOLID) {
 510                 g_profiler->avg("renderMap(): animated meshes [#]", mesh_animate_count);
 511         }
 512
 513         if (pass == scene::ESNRP_TRANSPARENT) {
 514                 g_profiler->avg("renderMap(): transparent buffers [#]", draw_order.size());
 515         }
 516
 517         g_profiler->avg(prefix + "vertices drawn [#]", vertex_count);
 518         g_profiler->avg(prefix + "drawcalls [#]", drawcall_count);
 519         g_profiler->avg(prefix + "material swaps [#]", material_swaps);
 520 }
 521
 522 static bool getVisibleBrightness(Map *map, const v3f &p0, v3f dir, float step,
 523         float step_multiplier, float start_distance, float end_distance,
 524         const NodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 525         int *result, bool *sunlight_seen)
 526 {
 527         int brightness_sum = 0;
 528         int brightness_count = 0;
 529         float distance = start_distance;
 530         dir.normalize();
 531         v3f pf = p0;
 532         pf += dir * distance;
 533         int noncount = 0;
 534         bool nonlight_seen = false;
 535         bool allow_allowing_non_sunlight_propagates = false;
 536         bool allow_non_sunlight_propagates = false;
 537         // Check content nearly at camera position
 538         {
 539                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 540                 MapNode n = map->getNode(p);
 541                 if(ndef->get(n).param_type == CPT_LIGHT &&
 542                                 !ndef->get(n).sunlight_propagates)
 543                         allow_allowing_non_sunlight_propagates = true;
 544         }
 545         // If would start at CONTENT_IGNORE, start closer
 546         {
 547                 v3s16 p = floatToInt(pf, BS);
 548                 MapNode n = map->getNode(p);
 549                 if(n.getContent() == CONTENT_IGNORE){
 550                         float newd = 2*BS;
 551                         pf = p0 + dir * 2*newd;
 552                         distance = newd;
 553                         sunlight_min_d = 0;
 554                 }
 555         }
 556         for (int i=0; distance < end_distance; i++) {
 557                 pf += dir * step;
 558                 distance += step;
 559                 step *= step_multiplier;
 560
 561                 v3s16 p = floatToInt(pf, BS);
 562                 MapNode n = map->getNode(p);
 563                 if (allow_allowing_non_sunlight_propagates && i == 0 &&
 564                                 ndef->get(n).param_type == CPT_LIGHT &&
 565                                 !ndef->get(n).sunlight_propagates) {
 566                         allow_non_sunlight_propagates = true;
 567                 }
 568
 569                 if (ndef->get(n).param_type != CPT_LIGHT ||
 570                                 (!ndef->get(n).sunlight_propagates &&
 571                                         !allow_non_sunlight_propagates)){
 572                         nonlight_seen = true;
 573                         noncount++;
 574                         if(noncount >= 4)
 575                                 break;
 576                         continue;
 577                 }
 578
 579                 if (distance >= sunlight_min_d && !*sunlight_seen && !nonlight_seen)
 580                         if (n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 581                                 *sunlight_seen = true;
 582                 noncount = 0;
 583                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 584                 brightness_count++;
 585         }
 586         *result = 0;
 587         if(brightness_count == 0)
 588                 return false;
 589         *result = brightness_sum / brightness_count;
 590         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 591                         <<(*result)<<std::endl;*/
 592         return true;
 593 }
 594
 595 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 596                 int oldvalue, bool *sunlight_seen_result)
 597 {
 598         ScopeProfiler sp(g_profiler, "CM::getBackgroundBrightness", SPT_AVG);
 599         static v3f z_directions[50] = {
 600                 v3f(-100, 0, 0)
 601         };
 602         static f32 z_offsets[50] = {
 603                 -1000,
 604         };
 605
 606         if (z_directions[0].X < -99) {
 607                 for (u32 i = 0; i < ARRLEN(z_directions); i++) {
 608                         // Assumes FOV of 72 and 16/9 aspect ratio
 609                         z_directions[i] = v3f(
 610                                 0.02 * myrand_range(-100, 100),
 611                                 1.0,
 612                                 0.01 * myrand_range(-100, 100)
 613                         ).normalize();
 614                         z_offsets[i] = 0.01 * myrand_range(0,100);
 615                 }
 616         }
 617
 618         int sunlight_seen_count = 0;
 619         float sunlight_min_d = max_d*0.8;
 620         if(sunlight_min_d > 35*BS)
 621                 sunlight_min_d = 35*BS;
 622         std::vector<int> values;
 623         values.reserve(ARRLEN(z_directions));
 624         for (u32 i = 0; i < ARRLEN(z_directions); i++) {
 625                 v3f z_dir = z_directions[i];
 626                 core::CMatrix4<f32> a;
 627                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 628                 v3f dir = m_camera_direction;
 629                 a.rotateVect(dir);
 630                 int br = 0;
 631                 float step = BS*1.5;
 632                 if(max_d > 35*BS)
 633                         step = max_d / 35 * 1.5;
 634                 float off = step * z_offsets[i];
 635                 bool sunlight_seen_now = false;
 636                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 637                                 step, 1.0, max_d*0.6+off, max_d, m_nodedef, daylight_factor,
 638                                 sunlight_min_d,
 639                                 &br, &sunlight_seen_now);
 640                 if(sunlight_seen_now)
 641                         sunlight_seen_count++;
 642                 if(!ok)
 643                         continue;
 644                 values.push_back(br);
 645                 // Don't try too much if being in the sun is clear
 646                 if(sunlight_seen_count >= 20)
 647                         break;
 648         }
 649         int brightness_sum = 0;
 650         int brightness_count = 0;
 651         std::sort(values.begin(), values.end());
 652         u32 num_values_to_use = values.size();
 653         if(num_values_to_use >= 10)
 654                 num_values_to_use -= num_values_to_use/2;
 655         else if(num_values_to_use >= 7)
 656                 num_values_to_use -= num_values_to_use/3;
 657         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 658
 659         for (u32 i=first_value_i; i < first_value_i + num_values_to_use; i++) {
 660                 brightness_sum += values[i];
 661                 brightness_count++;
 662         }
 663
 664         int ret = 0;
 665         if(brightness_count == 0){
 666                 MapNode n = getNode(floatToInt(m_camera_position, BS));
 667                 if(m_nodedef->get(n).param_type == CPT_LIGHT){
 668                         ret = decode_light(n.getLightBlend(daylight_factor, m_nodedef));
 669                 } else {
 670                         ret = oldvalue;
 671                 }
 672         } else {
 673                 ret = brightness_sum / brightness_count;
 674         }
 675
 676         *sunlight_seen_result = (sunlight_seen_count > 0);
 677         return ret;
 678 }
 679
 680 void ClientMap::renderPostFx(CameraMode cam_mode)
 681 {
 682         // Sadly ISceneManager has no "post effects" render pass, in that case we
 683         // could just register for that and handle it in renderMap().
 684
 685         MapNode n = getNode(floatToInt(m_camera_position, BS));
 686
 687         // - If the player is in a solid node, make everything black.
 688         // - If the player is in liquid, draw a semi-transparent overlay.
 689         // - Do not if player is in third person mode
 690         const ContentFeatures& features = m_nodedef->get(n);
 691         video::SColor post_effect_color = features.post_effect_color;
 692         if(features.solidness == 2 && !((g_settings->getBool("noclip") || g_settings->getBool("freecam")) &&
 693                         (m_client->checkLocalPrivilege("noclip") || g_settings->getBool("freecam"))) &&
 694                         cam_mode == CAMERA_MODE_FIRST)
 695         {
 696                 post_effect_color = video::SColor(255, 0, 0, 0);
 697         }
 698         if (post_effect_color.getAlpha() != 0)
 699         {
 700                 // Draw a full-screen rectangle
 701                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 702                 v2u32 ss = driver->getScreenSize();
 703                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 704                 driver->draw2DRectangle(post_effect_color, rect);
 705         }
 706 }
 707
 708 void ClientMap::PrintInfo(std::ostream &out)
 709 {
 710         out<<"ClientMap: ";
 711 }
 712
 713 void ClientMap::renderMapShadows(video::IVideoDriver *driver,
 714                 const video::SMaterial &material, s32 pass, int frame, int total_frames)
 715 {
 716         bool is_transparent_pass = pass != scene::ESNRP_SOLID;
 717         std::string prefix;
 718         if (is_transparent_pass)
 719                 prefix = "renderMap(SHADOW TRANS): ";
 720         else
 721                 prefix = "renderMap(SHADOW SOLID): ";
 722
 723         u32 drawcall_count = 0;
 724         u32 vertex_count = 0;
 725
 726         MeshBufListList grouped_buffers;
 727         std::vector<DrawDescriptor> draw_order;
 728
 729
 730         int count = 0;
 731         int low_bound = is_transparent_pass ? 0 : m_drawlist_shadow.size() / total_frames * frame;
 732         int high_bound = is_transparent_pass ? m_drawlist_shadow.size() : m_drawlist_shadow.size() / total_frames * (frame + 1);
 733
 734         // transparent pass should be rendered in one go
 735         if (is_transparent_pass && frame != total_frames - 1) {
 736                 return;
 737         }
 738
 739         for (auto &i : m_drawlist_shadow) {
 740                 // only process specific part of the list & break early
 741                 ++count;
 742                 if (count <= low_bound)
 743                         continue;
 744                 if (count > high_bound)
 745                         break;
 746
 747                 v3s16 block_pos = i.first;
 748                 MapBlock *block = i.second;
 749
 750                 // If the mesh of the block happened to get deleted, ignore it
 751                 if (!block->mesh)
 752                         continue;
 753
 754                 /*
 755                         Get the meshbuffers of the block
 756                 */
 757                 if (is_transparent_pass) {
 758                         // In transparent pass, the mesh will give us
 759                         // the partial buffers in the correct order
 760                         for (auto &buffer : block->mesh->getTransparentBuffers())
 761                                 draw_order.emplace_back(block_pos, &buffer);
 762                 }
 763                 else {
 764                         // otherwise, group buffers across meshes
 765                         // using MeshBufListList
 766                         MapBlockMesh *mapBlockMesh = block->mesh;
 767                         assert(mapBlockMesh);
 768
 769                         for (int layer = 0; layer < MAX_TILE_LAYERS; layer++) {
 770                                 scene::IMesh *mesh = mapBlockMesh->getMesh(layer);
 771                                 assert(mesh);
 772
 773                                 u32 c = mesh->getMeshBufferCount();
 774                                 for (u32 i = 0; i < c; i++) {
 775                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 776
 777                                         video::SMaterial &mat = buf->getMaterial();
 778                                         auto rnd = driver->getMaterialRenderer(mat.MaterialType);
 779                                         bool transparent = rnd && rnd->isTransparent();
 780                                         if (!transparent)
 781                                                 grouped_buffers.add(buf, block_pos, layer);
 782                                 }
 783                         }
 784                 }
 785         }
 786
 787         u32 buffer_count = 0;
 788         for (auto &lists : grouped_buffers.lists)
 789                 for (MeshBufList &list : lists)
 790                         buffer_count += list.bufs.size();
 791
 792         draw_order.reserve(draw_order.size() + buffer_count);
 793
 794         // Capture draw order for all solid meshes
 795         for (auto &lists : grouped_buffers.lists) {
 796                 for (MeshBufList &list : lists) {
 797                         // iterate in reverse to draw closest blocks first
 798                         for (auto it = list.bufs.rbegin(); it != list.bufs.rend(); ++it)
 799                                 draw_order.emplace_back(it->first, it->second, it != list.bufs.rbegin());
 800                 }
 801         }
 802
 803         TimeTaker draw("Drawing shadow mesh buffers");
 804
 805         core::matrix4 m; // Model matrix
 806         v3f offset = intToFloat(m_camera_offset, BS);
 807         u32 material_swaps = 0;
 808
 809         // Render all mesh buffers in order
 810         drawcall_count += draw_order.size();
 811
 812         for (auto &descriptor : draw_order) {
 813                 scene::IMeshBuffer *buf;
 814
 815                 if (descriptor.m_use_partial_buffer) {
 816                         descriptor.m_partial_buffer->beforeDraw();
 817                         buf = descriptor.m_partial_buffer->getBuffer();
 818                 }
 819                 else {
 820                         buf = descriptor.m_buffer;
 821                 }
 822
 823                 // Check and abort if the machine is swapping a lot
 824                 if (draw.getTimerTime() > 1000) {
 825                         infostream << "ClientMap::renderMapShadows(): Rendering "
 826                                         "took >1s, returning." << std::endl;
 827                         break;
 828                 }
 829
 830                 if (!descriptor.m_reuse_material) {
 831                         // override some material properties
 832                         video::SMaterial local_material = buf->getMaterial();
 833                         local_material.MaterialType = material.MaterialType;
 834                         local_material.BackfaceCulling = material.BackfaceCulling;
 835                         local_material.FrontfaceCulling = material.FrontfaceCulling;
 836                         local_material.BlendOperation = material.BlendOperation;
 837                         local_material.Lighting = false;
 838                         driver->setMaterial(local_material);
 839                         ++material_swaps;
 840                 }
 841
 842                 v3f block_wpos = intToFloat(descriptor.m_pos * MAP_BLOCKSIZE, BS);
 843                 m.setTranslation(block_wpos - offset);
 844
 845                 driver->setTransform(video::ETS_WORLD, m);
 846                 driver->drawMeshBuffer(buf);
 847                 vertex_count += buf->getIndexCount();
 848         }
 849
 850         // restore the driver material state
 851         video::SMaterial clean;
 852         clean.BlendOperation = video::EBO_ADD;
 853         driver->setMaterial(clean); // reset material to defaults
 854         driver->draw3DLine(v3f(), v3f(), video::SColor(0));
 855
 856         g_profiler->avg(prefix + "draw meshes [ms]", draw.stop(true));
 857         g_profiler->avg(prefix + "vertices drawn [#]", vertex_count);
 858         g_profiler->avg(prefix + "drawcalls [#]", drawcall_count);
 859         g_profiler->avg(prefix + "material swaps [#]", material_swaps);
 860 }
 861
 862 /*
 863         Custom update draw list for the pov of shadow light.
 864 */
 865 void ClientMap::updateDrawListShadow(v3f shadow_light_pos, v3f shadow_light_dir, float radius, float length)
 866 {
 867         ScopeProfiler sp(g_profiler, "CM::updateDrawListShadow()", SPT_AVG);
 868
 869         v3s16 cam_pos_nodes = floatToInt(shadow_light_pos, BS);
 870         v3s16 p_blocks_min;
 871         v3s16 p_blocks_max;
 872         getBlocksInViewRange(cam_pos_nodes, &p_blocks_min, &p_blocks_max, radius + length);
 873
 874         std::vector<v2s16> blocks_in_range;
 875
 876         for (auto &i : m_drawlist_shadow) {
 877                 MapBlock *block = i.second;
 878                 block->refDrop();
 879         }
 880         m_drawlist_shadow.clear();
 881
 882         // Number of blocks currently loaded by the client
 883         u32 blocks_loaded = 0;
 884         // Number of blocks with mesh in rendering range
 885         u32 blocks_in_range_with_mesh = 0;
 886         // Number of blocks occlusion culled
 887         u32 blocks_occlusion_culled = 0;
 888
 889         for (auto &sector_it : m_sectors) {
 890                 MapSector *sector = sector_it.second;
 891                 if (!sector)
 892                         continue;
 893                 blocks_loaded += sector->size();
 894
 895                 MapBlockVect sectorblocks;
 896                 sector->getBlocks(sectorblocks);
 897
 898                 /*
 899                         Loop through blocks in sector
 900                 */
 901                 for (MapBlock *block : sectorblocks) {
 902                         if (!block->mesh) {
 903                                 // Ignore if mesh doesn't exist
 904                                 continue;
 905                         }
 906
 907                         v3f block_pos = intToFloat(block->getPos() * MAP_BLOCKSIZE, BS);
 908                         v3f projection = shadow_light_pos + shadow_light_dir * shadow_light_dir.dotProduct(block_pos - shadow_light_pos);
 909                         if (projection.getDistanceFrom(block_pos) > radius)
 910                                 continue;
 911
 912                         blocks_in_range_with_mesh++;
 913
 914                         // This block is in range. Reset usage timer.
 915                         block->resetUsageTimer();
 916
 917                         // Add to set
 918                         if (m_drawlist_shadow.find(block->getPos()) == m_drawlist_shadow.end()) {
 919                                 block->refGrab();
 920                                 m_drawlist_shadow[block->getPos()] = block;
 921                         }
 922                 }
 923         }
 924
 925         g_profiler->avg("SHADOW MapBlock meshes in range [#]", blocks_in_range_with_mesh);
 926         g_profiler->avg("SHADOW MapBlocks occlusion culled [#]", blocks_occlusion_culled);
 927         g_profiler->avg("SHADOW MapBlocks drawn [#]", m_drawlist_shadow.size());
 928         g_profiler->avg("SHADOW MapBlocks loaded [#]", blocks_loaded);
 929 }
 930
 931 void ClientMap::updateTransparentMeshBuffers()
 932 {
 933         ScopeProfiler sp(g_profiler, "CM::updateTransparentMeshBuffers", SPT_AVG);
 934         u32 sorted_blocks = 0;
 935         u32 unsorted_blocks = 0;
 936         f32 sorting_distance_sq = pow(m_cache_transparency_sorting_distance * BS, 2.0f);
 937
 938
 939         // Update the order of transparent mesh buffers in each mesh
 940         for (auto it = m_drawlist.begin(); it != m_drawlist.end(); it++) {
 941                 MapBlock* block = it->second;
 942                 if (!block->mesh)
 943                         continue;
 944
 945                 if (m_needs_update_transparent_meshes ||
 946                                 block->mesh->getTransparentBuffers().size() == 0) {
 947
 948                         v3s16 block_pos = block->getPos();
 949                         v3f block_pos_f = intToFloat(block_pos * MAP_BLOCKSIZE + MAP_BLOCKSIZE / 2, BS);
 950                         f32 distance = m_camera_position.getDistanceFromSQ(block_pos_f);
 951                         if (distance <= sorting_distance_sq) {
 952                                 block->mesh->updateTransparentBuffers(m_camera_position, block_pos);
 953                                 ++sorted_blocks;
 954                         }
 955                         else {
 956                                 block->mesh->consolidateTransparentBuffers();
 957                                 ++unsorted_blocks;
 958                         }
 959                 }
 960         }
 961
 962         g_profiler->avg("CM::Transparent Buffers - Sorted", sorted_blocks);
 963         g_profiler->avg("CM::Transparent Buffers - Unsorted", unsorted_blocks);
 964         m_needs_update_transparent_meshes = false;
 965 }
 966