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 inside ground
 223         bool occlusion_culling_enabled = true;
 224         if (m_control.allow_noclip) {
 225                 MapNode n = getNode(cam_pos_nodes);
 226                 if (n.getContent() == CONTENT_IGNORE || m_nodedef->get(n).solidness == 2)
 227                         occlusion_culling_enabled = false;
 228         }
 229
 230         v3s16 camera_block = getContainerPos(cam_pos_nodes, MAP_BLOCKSIZE);
 231         m_drawlist = std::map<v3s16, MapBlock*, MapBlockComparer>(MapBlockComparer(camera_block));
 232
 233         // Uncomment to debug occluded blocks in the wireframe mode
 234         // TODO: Include this as a flag for an extended debugging setting
 235         //if (occlusion_culling_enabled && m_control.show_wireframe)
 236         //    occlusion_culling_enabled = porting::getTimeS() & 1;
 237
 238         for (const auto &sector_it : m_sectors) {
 239                 MapSector *sector = sector_it.second;
 240                 v2s16 sp = sector->getPos();
 241
 242                 blocks_loaded += sector->size();
 243                 if (!m_control.range_all) {
 244                         if (sp.X < p_blocks_min.X || sp.X > p_blocks_max.X ||
 245                                         sp.Y < p_blocks_min.Z || sp.Y > p_blocks_max.Z)
 246                                 continue;
 247                 }
 248
 249                 MapBlockVect sectorblocks;
 250                 sector->getBlocks(sectorblocks);
 251
 252                 /*
 253                         Loop through blocks in sector
 254                 */
 255
 256                 u32 sector_blocks_drawn = 0;
 257
 258                 for (MapBlock *block : sectorblocks) {
 259                         /*
 260                                 Compare block position to camera position, skip
 261                                 if not seen on display
 262                         */
 263
 264                         if (!block->mesh) {
 265                                 // Ignore if mesh doesn't exist
 266                                 continue;
 267                         }
 268
 269                         v3s16 block_coord = block->getPos();
 270                         v3s16 block_position = block->getPosRelative() + MAP_BLOCKSIZE / 2;
 271
 272                         // First, perform a simple distance check, with a padding of one extra block.
 273                         if (!m_control.range_all &&
 274                                         block_position.getDistanceFrom(cam_pos_nodes) > range + MAP_BLOCKSIZE)
 275                                 continue; // Out of range, skip.
 276
 277                         // Keep the block alive as long as it is in range.
 278                         block->resetUsageTimer();
 279                         blocks_in_range_with_mesh++;
 280
 281                         // Frustum culling
 282                         float d = 0.0;
 283                         if (!isBlockInSight(block_coord, camera_position,
 284                                         camera_direction, camera_fov, range * BS, &d))
 285                                 continue;
 286
 287                         // Occlusion culling
 288                         if ((!m_control.range_all && d > m_control.wanted_range * BS) ||
 289                                         (occlusion_culling_enabled && isBlockOccluded(block, cam_pos_nodes))) {
 290                                 blocks_occlusion_culled++;
 291                                 continue;
 292                         }
 293
 294                         // Add to set
 295                         block->refGrab();
 296                         m_drawlist[block_coord] = block;
 297
 298                         sector_blocks_drawn++;
 299                 } // foreach sectorblocks
 300
 301                 if (sector_blocks_drawn != 0)
 302                         m_last_drawn_sectors.insert(sp);
 303         }
 304
 305         g_profiler->avg("MapBlock meshes in range [#]", blocks_in_range_with_mesh);
 306         g_profiler->avg("MapBlocks occlusion culled [#]", blocks_occlusion_culled);
 307         g_profiler->avg("MapBlocks drawn [#]", m_drawlist.size());
 308         g_profiler->avg("MapBlocks loaded [#]", blocks_loaded);
 309 }
 310
 311 void ClientMap::renderMap(video::IVideoDriver* driver, s32 pass)
 312 {
 313         bool is_transparent_pass = pass == scene::ESNRP_TRANSPARENT;
 314
 315         std::string prefix;
 316         if (pass == scene::ESNRP_SOLID)
 317                 prefix = "renderMap(SOLID): ";
 318         else
 319                 prefix = "renderMap(TRANSPARENT): ";
 320
 321         /*
 322                 This is called two times per frame, reset on the non-transparent one
 323         */
 324         if (pass == scene::ESNRP_SOLID)
 325                 m_last_drawn_sectors.clear();
 326
 327         /*
 328                 Get animation parameters
 329         */
 330         const float animation_time = m_client->getAnimationTime();
 331         const int crack = m_client->getCrackLevel();
 332         const u32 daynight_ratio = m_client->getEnv().getDayNightRatio();
 333
 334         const v3f camera_position = m_camera_position;
 335
 336         /*
 337                 Get all blocks and draw all visible ones
 338         */
 339
 340         u32 vertex_count = 0;
 341         u32 drawcall_count = 0;
 342
 343         // For limiting number of mesh animations per frame
 344         u32 mesh_animate_count = 0;
 345         //u32 mesh_animate_count_far = 0;
 346
 347         /*
 348                 Update transparent meshes
 349         */
 350         if (is_transparent_pass)
 351                 updateTransparentMeshBuffers();
 352
 353         /*
 354                 Draw the selected MapBlocks
 355         */
 356
 357         MeshBufListList grouped_buffers;
 358         std::vector<DrawDescriptor> draw_order;
 359         video::SMaterial previous_material;
 360
 361         for (auto &i : m_drawlist) {
 362                 v3s16 block_pos = i.first;
 363                 MapBlock *block = i.second;
 364
 365                 // If the mesh of the block happened to get deleted, ignore it
 366                 if (!block->mesh)
 367                         continue;
 368
 369                 v3f block_pos_r = intToFloat(block->getPosRelative() + MAP_BLOCKSIZE / 2, BS);
 370                 float d = camera_position.getDistanceFrom(block_pos_r);
 371                 d = MYMAX(0,d - BLOCK_MAX_RADIUS);
 372
 373                 // Mesh animation
 374                 if (pass == scene::ESNRP_SOLID) {
 375                         MapBlockMesh *mapBlockMesh = block->mesh;
 376                         assert(mapBlockMesh);
 377                         // Pretty random but this should work somewhat nicely
 378                         bool faraway = d >= BS * 50;
 379                         if (mapBlockMesh->isAnimationForced() || !faraway ||
 380                                         mesh_animate_count < (m_control.range_all ? 200 : 50)) {
 381
 382                                 bool animated = mapBlockMesh->animate(faraway, animation_time,
 383                                         crack, daynight_ratio);
 384                                 if (animated)
 385                                         mesh_animate_count++;
 386                         } else {
 387                                 mapBlockMesh->decreaseAnimationForceTimer();
 388                         }
 389                 }
 390
 391                 /*
 392                         Get the meshbuffers of the block
 393                 */
 394                 if (is_transparent_pass) {
 395                         // In transparent pass, the mesh will give us
 396                         // the partial buffers in the correct order
 397                         for (auto &buffer : block->mesh->getTransparentBuffers())
 398                                 draw_order.emplace_back(block_pos, &buffer);
 399                 }
 400                 else {
 401                         // otherwise, group buffers across meshes
 402                         // using MeshBufListList
 403                         MapBlockMesh *mapBlockMesh = block->mesh;
 404                         assert(mapBlockMesh);
 405
 406                         for (int layer = 0; layer < MAX_TILE_LAYERS; layer++) {
 407                                 scene::IMesh *mesh = mapBlockMesh->getMesh(layer);
 408                                 assert(mesh);
 409
 410                                 u32 c = mesh->getMeshBufferCount();
 411                                 for (u32 i = 0; i < c; i++) {
 412                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 413
 414                                         video::SMaterial& material = buf->getMaterial();
 415                                         video::IMaterialRenderer* rnd =
 416                                                         driver->getMaterialRenderer(material.MaterialType);
 417                                         bool transparent = (rnd && rnd->isTransparent());
 418                                         if (!transparent) {
 419                                                 if (buf->getVertexCount() == 0)
 420                                                         errorstream << "Block [" << analyze_block(block)
 421                                                                         << "] contains an empty meshbuf" << std::endl;
 422
 423                                                 grouped_buffers.add(buf, block_pos, layer);
 424                                         }
 425                                 }
 426                         }
 427                 }
 428         }
 429
 430         // Capture draw order for all solid meshes
 431         for (auto &lists : grouped_buffers.lists) {
 432                 for (MeshBufList &list : lists) {
 433                         // iterate in reverse to draw closest blocks first
 434                         for (auto it = list.bufs.rbegin(); it != list.bufs.rend(); ++it) {
 435                                 draw_order.emplace_back(it->first, it->second, it != list.bufs.rbegin());
 436                         }
 437                 }
 438         }
 439
 440         TimeTaker draw("Drawing mesh buffers");
 441
 442         core::matrix4 m; // Model matrix
 443         v3f offset = intToFloat(m_camera_offset, BS);
 444         u32 material_swaps = 0;
 445
 446         // Render all mesh buffers in order
 447         drawcall_count += draw_order.size();
 448
 449         for (auto &descriptor : draw_order) {
 450                 scene::IMeshBuffer *buf = descriptor.getBuffer();
 451
 452                 // Check and abort if the machine is swapping a lot
 453                 if (draw.getTimerTime() > 2000) {
 454                         infostream << "ClientMap::renderMap(): Rendering took >2s, " <<
 455                                         "returning." << std::endl;
 456                         return;
 457                 }
 458
 459                 if (!descriptor.m_reuse_material) {
 460                         auto &material = buf->getMaterial();
 461
 462                         // Apply filter settings
 463                         material.setFlag(video::EMF_TRILINEAR_FILTER,
 464                                 m_cache_trilinear_filter);
 465                         material.setFlag(video::EMF_BILINEAR_FILTER,
 466                                 m_cache_bilinear_filter);
 467                         material.setFlag(video::EMF_ANISOTROPIC_FILTER,
 468                                 m_cache_anistropic_filter);
 469                         material.setFlag(video::EMF_WIREFRAME,
 470                                 m_control.show_wireframe);
 471
 472                         // pass the shadow map texture to the buffer texture
 473                         ShadowRenderer *shadow = m_rendering_engine->get_shadow_renderer();
 474                         if (shadow && shadow->is_active()) {
 475                                 auto &layer = material.TextureLayer[3];
 476                                 layer.Texture = shadow->get_texture();
 477                                 layer.TextureWrapU = video::E_TEXTURE_CLAMP::ETC_CLAMP_TO_EDGE;
 478                                 layer.TextureWrapV = video::E_TEXTURE_CLAMP::ETC_CLAMP_TO_EDGE;
 479                                 // Do not enable filter on shadow texture to avoid visual artifacts
 480                                 // with colored shadows.
 481                                 // Filtering is done in shader code anyway
 482                                 layer.BilinearFilter = false;
 483                                 layer.AnisotropicFilter = false;
 484                                 layer.TrilinearFilter = false;
 485                         }
 486                         driver->setMaterial(material);
 487                         ++material_swaps;
 488                 }
 489
 490                 v3f block_wpos = intToFloat(descriptor.m_pos * MAP_BLOCKSIZE, BS);
 491                 m.setTranslation(block_wpos - offset);
 492
 493                 driver->setTransform(video::ETS_WORLD, m);
 494                 descriptor.draw(driver);
 495                 vertex_count += buf->getIndexCount();
 496         }
 497
 498         g_profiler->avg(prefix + "draw meshes [ms]", draw.stop(true));
 499
 500         // Log only on solid pass because values are the same
 501         if (pass == scene::ESNRP_SOLID) {
 502                 g_profiler->avg("renderMap(): animated meshes [#]", mesh_animate_count);
 503         }
 504
 505         if (pass == scene::ESNRP_TRANSPARENT) {
 506                 g_profiler->avg("renderMap(): transparent buffers [#]", draw_order.size());
 507         }
 508
 509         g_profiler->avg(prefix + "vertices drawn [#]", vertex_count);
 510         g_profiler->avg(prefix + "drawcalls [#]", drawcall_count);
 511         g_profiler->avg(prefix + "material swaps [#]", material_swaps);
 512 }
 513
 514 static bool getVisibleBrightness(Map *map, const v3f &p0, v3f dir, float step,
 515         float step_multiplier, float start_distance, float end_distance,
 516         const NodeDefManager *ndef, u32 daylight_factor, float sunlight_min_d,
 517         int *result, bool *sunlight_seen)
 518 {
 519         int brightness_sum = 0;
 520         int brightness_count = 0;
 521         float distance = start_distance;
 522         dir.normalize();
 523         v3f pf = p0;
 524         pf += dir * distance;
 525         int noncount = 0;
 526         bool nonlight_seen = false;
 527         bool allow_allowing_non_sunlight_propagates = false;
 528         bool allow_non_sunlight_propagates = false;
 529         // Check content nearly at camera position
 530         {
 531                 v3s16 p = floatToInt(p0 /*+ dir * 3*BS*/, BS);
 532                 MapNode n = map->getNode(p);
 533                 if(ndef->get(n).param_type == CPT_LIGHT &&
 534                                 !ndef->get(n).sunlight_propagates)
 535                         allow_allowing_non_sunlight_propagates = true;
 536         }
 537         // If would start at CONTENT_IGNORE, start closer
 538         {
 539                 v3s16 p = floatToInt(pf, BS);
 540                 MapNode n = map->getNode(p);
 541                 if(n.getContent() == CONTENT_IGNORE){
 542                         float newd = 2*BS;
 543                         pf = p0 + dir * 2*newd;
 544                         distance = newd;
 545                         sunlight_min_d = 0;
 546                 }
 547         }
 548         for (int i=0; distance < end_distance; i++) {
 549                 pf += dir * step;
 550                 distance += step;
 551                 step *= step_multiplier;
 552
 553                 v3s16 p = floatToInt(pf, BS);
 554                 MapNode n = map->getNode(p);
 555                 if (allow_allowing_non_sunlight_propagates && i == 0 &&
 556                                 ndef->get(n).param_type == CPT_LIGHT &&
 557                                 !ndef->get(n).sunlight_propagates) {
 558                         allow_non_sunlight_propagates = true;
 559                 }
 560
 561                 if (ndef->get(n).param_type != CPT_LIGHT ||
 562                                 (!ndef->get(n).sunlight_propagates &&
 563                                         !allow_non_sunlight_propagates)){
 564                         nonlight_seen = true;
 565                         noncount++;
 566                         if(noncount >= 4)
 567                                 break;
 568                         continue;
 569                 }
 570
 571                 if (distance >= sunlight_min_d && !*sunlight_seen && !nonlight_seen)
 572                         if (n.getLight(LIGHTBANK_DAY, ndef) == LIGHT_SUN)
 573                                 *sunlight_seen = true;
 574                 noncount = 0;
 575                 brightness_sum += decode_light(n.getLightBlend(daylight_factor, ndef));
 576                 brightness_count++;
 577         }
 578         *result = 0;
 579         if(brightness_count == 0)
 580                 return false;
 581         *result = brightness_sum / brightness_count;
 582         /*std::cerr<<"Sampled "<<brightness_count<<" points; result="
 583                         <<(*result)<<std::endl;*/
 584         return true;
 585 }
 586
 587 int ClientMap::getBackgroundBrightness(float max_d, u32 daylight_factor,
 588                 int oldvalue, bool *sunlight_seen_result)
 589 {
 590         ScopeProfiler sp(g_profiler, "CM::getBackgroundBrightness", SPT_AVG);
 591         static v3f z_directions[50] = {
 592                 v3f(-100, 0, 0)
 593         };
 594         static f32 z_offsets[50] = {
 595                 -1000,
 596         };
 597
 598         if (z_directions[0].X < -99) {
 599                 for (u32 i = 0; i < ARRLEN(z_directions); i++) {
 600                         // Assumes FOV of 72 and 16/9 aspect ratio
 601                         z_directions[i] = v3f(
 602                                 0.02 * myrand_range(-100, 100),
 603                                 1.0,
 604                                 0.01 * myrand_range(-100, 100)
 605                         ).normalize();
 606                         z_offsets[i] = 0.01 * myrand_range(0,100);
 607                 }
 608         }
 609
 610         int sunlight_seen_count = 0;
 611         float sunlight_min_d = max_d*0.8;
 612         if(sunlight_min_d > 35*BS)
 613                 sunlight_min_d = 35*BS;
 614         std::vector<int> values;
 615         values.reserve(ARRLEN(z_directions));
 616         for (u32 i = 0; i < ARRLEN(z_directions); i++) {
 617                 v3f z_dir = z_directions[i];
 618                 core::CMatrix4<f32> a;
 619                 a.buildRotateFromTo(v3f(0,1,0), z_dir);
 620                 v3f dir = m_camera_direction;
 621                 a.rotateVect(dir);
 622                 int br = 0;
 623                 float step = BS*1.5;
 624                 if(max_d > 35*BS)
 625                         step = max_d / 35 * 1.5;
 626                 float off = step * z_offsets[i];
 627                 bool sunlight_seen_now = false;
 628                 bool ok = getVisibleBrightness(this, m_camera_position, dir,
 629                                 step, 1.0, max_d*0.6+off, max_d, m_nodedef, daylight_factor,
 630                                 sunlight_min_d,
 631                                 &br, &sunlight_seen_now);
 632                 if(sunlight_seen_now)
 633                         sunlight_seen_count++;
 634                 if(!ok)
 635                         continue;
 636                 values.push_back(br);
 637                 // Don't try too much if being in the sun is clear
 638                 if(sunlight_seen_count >= 20)
 639                         break;
 640         }
 641         int brightness_sum = 0;
 642         int brightness_count = 0;
 643         std::sort(values.begin(), values.end());
 644         u32 num_values_to_use = values.size();
 645         if(num_values_to_use >= 10)
 646                 num_values_to_use -= num_values_to_use/2;
 647         else if(num_values_to_use >= 7)
 648                 num_values_to_use -= num_values_to_use/3;
 649         u32 first_value_i = (values.size() - num_values_to_use) / 2;
 650
 651         for (u32 i=first_value_i; i < first_value_i + num_values_to_use; i++) {
 652                 brightness_sum += values[i];
 653                 brightness_count++;
 654         }
 655
 656         int ret = 0;
 657         if(brightness_count == 0){
 658                 MapNode n = getNode(floatToInt(m_camera_position, BS));
 659                 if(m_nodedef->get(n).param_type == CPT_LIGHT){
 660                         ret = decode_light(n.getLightBlend(daylight_factor, m_nodedef));
 661                 } else {
 662                         ret = oldvalue;
 663                 }
 664         } else {
 665                 ret = brightness_sum / brightness_count;
 666         }
 667
 668         *sunlight_seen_result = (sunlight_seen_count > 0);
 669         return ret;
 670 }
 671
 672 void ClientMap::renderPostFx(CameraMode cam_mode)
 673 {
 674         // Sadly ISceneManager has no "post effects" render pass, in that case we
 675         // could just register for that and handle it in renderMap().
 676
 677         MapNode n = getNode(floatToInt(m_camera_position, BS));
 678
 679         const ContentFeatures& features = m_nodedef->get(n);
 680         video::SColor post_effect_color = features.post_effect_color;
 681
 682         // If the camera is in a solid node, make everything black.
 683         // (first person mode only)
 684         if (features.solidness == 2 && cam_mode == CAMERA_MODE_FIRST &&
 685                 !m_control.allow_noclip) {
 686                 post_effect_color = video::SColor(255, 0, 0, 0);
 687         }
 688
 689         if (post_effect_color.getAlpha() != 0) {
 690                 // Draw a full-screen rectangle
 691                 video::IVideoDriver* driver = SceneManager->getVideoDriver();
 692                 v2u32 ss = driver->getScreenSize();
 693                 core::rect<s32> rect(0,0, ss.X, ss.Y);
 694                 driver->draw2DRectangle(post_effect_color, rect);
 695         }
 696 }
 697
 698 void ClientMap::PrintInfo(std::ostream &out)
 699 {
 700         out<<"ClientMap: ";
 701 }
 702
 703 void ClientMap::renderMapShadows(video::IVideoDriver *driver,
 704                 const video::SMaterial &material, s32 pass, int frame, int total_frames)
 705 {
 706         bool is_transparent_pass = pass != scene::ESNRP_SOLID;
 707         std::string prefix;
 708         if (is_transparent_pass)
 709                 prefix = "renderMap(SHADOW TRANS): ";
 710         else
 711                 prefix = "renderMap(SHADOW SOLID): ";
 712
 713         u32 drawcall_count = 0;
 714         u32 vertex_count = 0;
 715
 716         MeshBufListList grouped_buffers;
 717         std::vector<DrawDescriptor> draw_order;
 718
 719
 720         int count = 0;
 721         int low_bound = is_transparent_pass ? 0 : m_drawlist_shadow.size() / total_frames * frame;
 722         int high_bound = is_transparent_pass ? m_drawlist_shadow.size() : m_drawlist_shadow.size() / total_frames * (frame + 1);
 723
 724         // transparent pass should be rendered in one go
 725         if (is_transparent_pass && frame != total_frames - 1) {
 726                 return;
 727         }
 728
 729         for (auto &i : m_drawlist_shadow) {
 730                 // only process specific part of the list & break early
 731                 ++count;
 732                 if (count <= low_bound)
 733                         continue;
 734                 if (count > high_bound)
 735                         break;
 736
 737                 v3s16 block_pos = i.first;
 738                 MapBlock *block = i.second;
 739
 740                 // If the mesh of the block happened to get deleted, ignore it
 741                 if (!block->mesh)
 742                         continue;
 743
 744                 /*
 745                         Get the meshbuffers of the block
 746                 */
 747                 if (is_transparent_pass) {
 748                         // In transparent pass, the mesh will give us
 749                         // the partial buffers in the correct order
 750                         for (auto &buffer : block->mesh->getTransparentBuffers())
 751                                 draw_order.emplace_back(block_pos, &buffer);
 752                 }
 753                 else {
 754                         // otherwise, group buffers across meshes
 755                         // using MeshBufListList
 756                         MapBlockMesh *mapBlockMesh = block->mesh;
 757                         assert(mapBlockMesh);
 758
 759                         for (int layer = 0; layer < MAX_TILE_LAYERS; layer++) {
 760                                 scene::IMesh *mesh = mapBlockMesh->getMesh(layer);
 761                                 assert(mesh);
 762
 763                                 u32 c = mesh->getMeshBufferCount();
 764                                 for (u32 i = 0; i < c; i++) {
 765                                         scene::IMeshBuffer *buf = mesh->getMeshBuffer(i);
 766
 767                                         video::SMaterial &mat = buf->getMaterial();
 768                                         auto rnd = driver->getMaterialRenderer(mat.MaterialType);
 769                                         bool transparent = rnd && rnd->isTransparent();
 770                                         if (!transparent)
 771                                                 grouped_buffers.add(buf, block_pos, layer);
 772                                 }
 773                         }
 774                 }
 775         }
 776
 777         u32 buffer_count = 0;
 778         for (auto &lists : grouped_buffers.lists)
 779                 for (MeshBufList &list : lists)
 780                         buffer_count += list.bufs.size();
 781
 782         draw_order.reserve(draw_order.size() + buffer_count);
 783
 784         // Capture draw order for all solid meshes
 785         for (auto &lists : grouped_buffers.lists) {
 786                 for (MeshBufList &list : lists) {
 787                         // iterate in reverse to draw closest blocks first
 788                         for (auto it = list.bufs.rbegin(); it != list.bufs.rend(); ++it)
 789                                 draw_order.emplace_back(it->first, it->second, it != list.bufs.rbegin());
 790                 }
 791         }
 792
 793         TimeTaker draw("Drawing shadow mesh buffers");
 794
 795         core::matrix4 m; // Model matrix
 796         v3f offset = intToFloat(m_camera_offset, BS);
 797         u32 material_swaps = 0;
 798
 799         // Render all mesh buffers in order
 800         drawcall_count += draw_order.size();
 801
 802         for (auto &descriptor : draw_order) {
 803                 scene::IMeshBuffer *buf = descriptor.getBuffer();
 804
 805                 // Check and abort if the machine is swapping a lot
 806                 if (draw.getTimerTime() > 1000) {
 807                         infostream << "ClientMap::renderMapShadows(): Rendering "
 808                                         "took >1s, returning." << std::endl;
 809                         break;
 810                 }
 811
 812                 if (!descriptor.m_reuse_material) {
 813                         // override some material properties
 814                         video::SMaterial local_material = buf->getMaterial();
 815                         local_material.MaterialType = material.MaterialType;
 816                         local_material.BackfaceCulling = material.BackfaceCulling;
 817                         local_material.FrontfaceCulling = material.FrontfaceCulling;
 818                         local_material.BlendOperation = material.BlendOperation;
 819                         local_material.Lighting = false;
 820                         driver->setMaterial(local_material);
 821                         ++material_swaps;
 822                 }
 823
 824                 v3f block_wpos = intToFloat(descriptor.m_pos * MAP_BLOCKSIZE, BS);
 825                 m.setTranslation(block_wpos - offset);
 826
 827                 driver->setTransform(video::ETS_WORLD, m);
 828                 descriptor.draw(driver);
 829                 vertex_count += buf->getIndexCount();
 830         }
 831
 832         // restore the driver material state
 833         video::SMaterial clean;
 834         clean.BlendOperation = video::EBO_ADD;
 835         driver->setMaterial(clean); // reset material to defaults
 836         driver->draw3DLine(v3f(), v3f(), video::SColor(0));
 837
 838         g_profiler->avg(prefix + "draw meshes [ms]", draw.stop(true));
 839         g_profiler->avg(prefix + "vertices drawn [#]", vertex_count);
 840         g_profiler->avg(prefix + "drawcalls [#]", drawcall_count);
 841         g_profiler->avg(prefix + "material swaps [#]", material_swaps);
 842 }
 843
 844 /*
 845         Custom update draw list for the pov of shadow light.
 846 */
 847 void ClientMap::updateDrawListShadow(v3f shadow_light_pos, v3f shadow_light_dir, float radius, float length)
 848 {
 849         ScopeProfiler sp(g_profiler, "CM::updateDrawListShadow()", SPT_AVG);
 850
 851         v3s16 cam_pos_nodes = floatToInt(shadow_light_pos, BS);
 852         v3s16 p_blocks_min;
 853         v3s16 p_blocks_max;
 854         getBlocksInViewRange(cam_pos_nodes, &p_blocks_min, &p_blocks_max, radius + length);
 855
 856         std::vector<v2s16> blocks_in_range;
 857
 858         for (auto &i : m_drawlist_shadow) {
 859                 MapBlock *block = i.second;
 860                 block->refDrop();
 861         }
 862         m_drawlist_shadow.clear();
 863
 864         // Number of blocks currently loaded by the client
 865         u32 blocks_loaded = 0;
 866         // Number of blocks with mesh in rendering range
 867         u32 blocks_in_range_with_mesh = 0;
 868         // Number of blocks occlusion culled
 869         u32 blocks_occlusion_culled = 0;
 870
 871         for (auto &sector_it : m_sectors) {
 872                 MapSector *sector = sector_it.second;
 873                 if (!sector)
 874                         continue;
 875                 blocks_loaded += sector->size();
 876
 877                 MapBlockVect sectorblocks;
 878                 sector->getBlocks(sectorblocks);
 879
 880                 /*
 881                         Loop through blocks in sector
 882                 */
 883                 for (MapBlock *block : sectorblocks) {
 884                         if (!block->mesh) {
 885                                 // Ignore if mesh doesn't exist
 886                                 continue;
 887                         }
 888
 889                         v3f block_pos = intToFloat(block->getPos() * MAP_BLOCKSIZE, BS);
 890                         v3f projection = shadow_light_pos + shadow_light_dir * shadow_light_dir.dotProduct(block_pos - shadow_light_pos);
 891                         if (projection.getDistanceFrom(block_pos) > radius)
 892                                 continue;
 893
 894                         blocks_in_range_with_mesh++;
 895
 896                         // This block is in range. Reset usage timer.
 897                         block->resetUsageTimer();
 898
 899                         // Add to set
 900                         if (m_drawlist_shadow.find(block->getPos()) == m_drawlist_shadow.end()) {
 901                                 block->refGrab();
 902                                 m_drawlist_shadow[block->getPos()] = block;
 903                         }
 904                 }
 905         }
 906
 907         g_profiler->avg("SHADOW MapBlock meshes in range [#]", blocks_in_range_with_mesh);
 908         g_profiler->avg("SHADOW MapBlocks occlusion culled [#]", blocks_occlusion_culled);
 909         g_profiler->avg("SHADOW MapBlocks drawn [#]", m_drawlist_shadow.size());
 910         g_profiler->avg("SHADOW MapBlocks loaded [#]", blocks_loaded);
 911 }
 912
 913 void ClientMap::updateTransparentMeshBuffers()
 914 {
 915         ScopeProfiler sp(g_profiler, "CM::updateTransparentMeshBuffers", SPT_AVG);
 916         u32 sorted_blocks = 0;
 917         u32 unsorted_blocks = 0;
 918         f32 sorting_distance_sq = pow(m_cache_transparency_sorting_distance * BS, 2.0f);
 919
 920
 921         // Update the order of transparent mesh buffers in each mesh
 922         for (auto it = m_drawlist.begin(); it != m_drawlist.end(); it++) {
 923                 MapBlock* block = it->second;
 924                 if (!block->mesh)
 925                         continue;
 926
 927                 if (m_needs_update_transparent_meshes ||
 928                                 block->mesh->getTransparentBuffers().size() == 0) {
 929
 930                         v3s16 block_pos = block->getPos();
 931                         v3f block_pos_f = intToFloat(block_pos * MAP_BLOCKSIZE + MAP_BLOCKSIZE / 2, BS);
 932                         f32 distance = m_camera_position.getDistanceFromSQ(block_pos_f);
 933                         if (distance <= sorting_distance_sq) {
 934                                 block->mesh->updateTransparentBuffers(m_camera_position, block_pos);
 935                                 ++sorted_blocks;
 936                         }
 937                         else {
 938                                 block->mesh->consolidateTransparentBuffers();
 939                                 ++unsorted_blocks;
 940                         }
 941                 }
 942         }
 943
 944         g_profiler->avg("CM::Transparent Buffers - Sorted", sorted_blocks);
 945         g_profiler->avg("CM::Transparent Buffers - Unsorted", unsorted_blocks);
 946         m_needs_update_transparent_meshes = false;
 947 }
 948
 949 scene::IMeshBuffer* ClientMap::DrawDescriptor::getBuffer()
 950 {
 951         return m_use_partial_buffer ? m_partial_buffer->getBuffer() : m_buffer;
 952 }
 953
 954 void ClientMap::DrawDescriptor::draw(video::IVideoDriver* driver)
 955 {
 956         if (m_use_partial_buffer) {
 957                 m_partial_buffer->beforeDraw();
 958                 driver->drawMeshBuffer(m_partial_buffer->getBuffer());
 959                 m_partial_buffer->afterDraw();
 960         } else {
 961                 driver->drawMeshBuffer(m_buffer);
 962         }
 963 }