forked from Mirrorlandia_minetest/minetest
Remove the 'loops' occlusion culler (#13169)
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GitHub
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8478796226
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@ -628,11 +628,6 @@ update_last_checked (Last update check) string
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# Ex: 5.5.0 is 005005000
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# Ex: 5.5.0 is 005005000
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update_last_known (Last known version update) int 0
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update_last_known (Last known version update) int 0
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# Type of occlusion_culler
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# "loops" is the legacy algorithm with nested loops and O(N^3) complexity
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# "bfs" is the new algorithm based on breadth-first-search and side culling
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occlusion_culler (Occlusion Culler) enum bfs bfs,loops
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# Use raytraced occlusion culling in the new culler.
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# Use raytraced occlusion culling in the new culler.
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# This flag enables use of raytraced occlusion culling test
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# This flag enables use of raytraced occlusion culling test
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enable_raytraced_culling (Enable Raytraced Culling) bool true
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enable_raytraced_culling (Enable Raytraced Culling) bool true
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@ -103,23 +103,18 @@ ClientMap::ClientMap(
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m_cache_bilinear_filter = g_settings->getBool("bilinear_filter");
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m_cache_bilinear_filter = g_settings->getBool("bilinear_filter");
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m_cache_anistropic_filter = g_settings->getBool("anisotropic_filter");
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m_cache_anistropic_filter = g_settings->getBool("anisotropic_filter");
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m_cache_transparency_sorting_distance = g_settings->getU16("transparency_sorting_distance");
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m_cache_transparency_sorting_distance = g_settings->getU16("transparency_sorting_distance");
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m_new_occlusion_culler = g_settings->get("occlusion_culler") == "bfs";
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g_settings->registerChangedCallback("occlusion_culler", on_settings_changed, this);
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m_enable_raytraced_culling = g_settings->getBool("enable_raytraced_culling");
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m_enable_raytraced_culling = g_settings->getBool("enable_raytraced_culling");
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g_settings->registerChangedCallback("enable_raytraced_culling", on_settings_changed, this);
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g_settings->registerChangedCallback("enable_raytraced_culling", on_settings_changed, this);
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}
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}
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void ClientMap::onSettingChanged(const std::string &name)
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void ClientMap::onSettingChanged(const std::string &name)
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{
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{
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if (name == "occlusion_culler")
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m_new_occlusion_culler = g_settings->get("occlusion_culler") == "bfs";
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if (name == "enable_raytraced_culling")
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if (name == "enable_raytraced_culling")
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m_enable_raytraced_culling = g_settings->getBool("enable_raytraced_culling");
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m_enable_raytraced_culling = g_settings->getBool("enable_raytraced_culling");
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}
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}
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ClientMap::~ClientMap()
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ClientMap::~ClientMap()
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{
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{
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g_settings->deregisterChangedCallback("occlusion_culler", on_settings_changed, this);
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g_settings->deregisterChangedCallback("enable_raytraced_culling", on_settings_changed, this);
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g_settings->deregisterChangedCallback("enable_raytraced_culling", on_settings_changed, this);
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}
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}
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@ -252,363 +247,241 @@ private:
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void ClientMap::updateDrawList()
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void ClientMap::updateDrawList()
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{
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{
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if (m_new_occlusion_culler) {
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ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
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ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
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m_needs_update_drawlist = false;
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m_needs_update_drawlist = false;
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for (auto &i : m_drawlist) {
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for (auto &i : m_drawlist) {
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MapBlock *block = i.second;
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MapBlock *block = i.second;
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block->refDrop();
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block->refDrop();
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}
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m_drawlist.clear();
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v3s16 cam_pos_nodes = floatToInt(m_camera_position, BS);
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v3s16 p_blocks_min;
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v3s16 p_blocks_max;
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getBlocksInViewRange(cam_pos_nodes, &p_blocks_min, &p_blocks_max);
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// Number of blocks occlusion culled
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u32 blocks_occlusion_culled = 0;
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// Blocks visited by the algorithm
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u32 blocks_visited = 0;
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// Block sides that were not traversed
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u32 sides_skipped = 0;
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// No occlusion culling when free_move is on and camera is inside ground
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bool occlusion_culling_enabled = true;
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if (m_control.allow_noclip) {
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MapNode n = getNode(cam_pos_nodes);
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if (n.getContent() == CONTENT_IGNORE || m_nodedef->get(n).solidness == 2)
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occlusion_culling_enabled = false;
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}
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v3s16 camera_block = getContainerPos(cam_pos_nodes, MAP_BLOCKSIZE);
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m_drawlist = std::map<v3s16, MapBlock*, MapBlockComparer>(MapBlockComparer(camera_block));
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auto is_frustum_culled = m_client->getCamera()->getFrustumCuller();
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// Uncomment to debug occluded blocks in the wireframe mode
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// TODO: Include this as a flag for an extended debugging setting
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// if (occlusion_culling_enabled && m_control.show_wireframe)
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// occlusion_culling_enabled = porting::getTimeS() & 1;
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std::queue<v3s16> blocks_to_consider;
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// Bits per block:
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// [ visited | 0 | 0 | 0 | 0 | Z visible | Y visible | X visible ]
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MapBlockFlags blocks_seen(p_blocks_min, p_blocks_max);
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// Start breadth-first search with the block the camera is in
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blocks_to_consider.push(camera_block);
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blocks_seen.getChunk(camera_block).getBits(camera_block) = 0x07; // mark all sides as visible
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// Recursively walk the space and pick mapblocks for drawing
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while (blocks_to_consider.size() > 0) {
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v3s16 block_coord = blocks_to_consider.front();
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blocks_to_consider.pop();
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auto &flags = blocks_seen.getChunk(block_coord).getBits(block_coord);
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// Only visit each block once (it may have been queued up to three times)
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if ((flags & 0x80) == 0x80)
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continue;
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flags |= 0x80;
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blocks_visited++;
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// Get the sector, block and mesh
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MapSector *sector = this->getSectorNoGenerate(v2s16(block_coord.X, block_coord.Z));
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if (!sector)
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continue;
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MapBlock *block = sector->getBlockNoCreateNoEx(block_coord.Y);
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MapBlockMesh *mesh = block ? block->mesh : nullptr;
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// Calculate the coordinates for range and frutum culling
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v3f mesh_sphere_center;
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f32 mesh_sphere_radius;
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v3s16 block_pos_nodes = block_coord * MAP_BLOCKSIZE;
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if (mesh) {
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mesh_sphere_center = intToFloat(block_pos_nodes, BS)
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+ mesh->getBoundingSphereCenter();
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mesh_sphere_radius = mesh->getBoundingRadius();
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}
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else {
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mesh_sphere_center = intToFloat(block_pos_nodes, BS) + v3f((MAP_BLOCKSIZE * 0.5f - 0.5f) * BS);
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mesh_sphere_radius = 0.0f;
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}
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// First, perform a simple distance check.
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if (!m_control.range_all &&
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mesh_sphere_center.getDistanceFrom(intToFloat(cam_pos_nodes, BS)) >
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m_control.wanted_range * BS + mesh_sphere_radius)
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continue; // Out of range, skip.
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// Frustum culling
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// Only do coarse culling here, to account for fast camera movement.
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// This is needed because this function is not called every frame.
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float frustum_cull_extra_radius = 300.0f;
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if (is_frustum_culled(mesh_sphere_center,
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mesh_sphere_radius + frustum_cull_extra_radius))
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continue;
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// Calculate the vector from the camera block to the current block
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// We use it to determine through which sides of the current block we can continue the search
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v3s16 look = block_coord - camera_block;
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// Occluded near sides will further occlude the far sides
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u8 visible_outer_sides = flags & 0x07;
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// Raytraced occlusion culling - send rays from the camera to the block's corners
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if (occlusion_culling_enabled && m_enable_raytraced_culling &&
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block && mesh &&
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visible_outer_sides != 0x07 && isBlockOccluded(block, cam_pos_nodes)) {
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blocks_occlusion_culled++;
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continue;
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}
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// The block is visible, add to the draw list
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if (mesh) {
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// Add to set
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block->refGrab();
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m_drawlist[block_coord] = block;
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}
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// Decide which sides to traverse next or to block away
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// First, find the near sides that would occlude the far sides
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// * A near side can itself be occluded by a nearby block (the test above ^^)
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// * A near side can be visible but fully opaque by itself (e.g. ground at the 0 level)
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// mesh solid sides are +Z-Z+Y-Y+X-X
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// if we are inside the block's coordinates on an axis,
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// treat these sides as opaque, as they should not allow to reach the far sides
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u8 block_inner_sides = (look.X == 0 ? 3 : 0) |
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(look.Y == 0 ? 12 : 0) |
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(look.Z == 0 ? 48 : 0);
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// get the mask for the sides that are relevant based on the direction
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u8 near_inner_sides = (look.X > 0 ? 1 : 2) |
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(look.Y > 0 ? 4 : 8) |
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(look.Z > 0 ? 16 : 32);
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// This bitset is +Z-Z+Y-Y+X-X (See MapBlockMesh), and axis is XYZ.
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// Get he block's transparent sides
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u8 transparent_sides = (occlusion_culling_enabled && block) ? ~block->solid_sides : 0x3F;
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// compress block transparent sides to ZYX mask of see-through axes
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u8 near_transparency = (block_inner_sides == 0x3F) ? near_inner_sides : (transparent_sides & near_inner_sides);
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// when we are inside the camera block, do not block any sides
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if (block_inner_sides == 0x3F)
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block_inner_sides = 0;
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near_transparency &= ~block_inner_sides & 0x3F;
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near_transparency |= (near_transparency >> 1);
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near_transparency = (near_transparency & 1) |
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((near_transparency >> 1) & 2) |
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((near_transparency >> 2) & 4);
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// combine with known visible sides that matter
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near_transparency &= visible_outer_sides;
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// The rule for any far side to be visible:
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// * Any of the adjacent near sides is transparent (different axes)
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// * The opposite near side (same axis) is transparent, if it is the dominant axis of the look vector
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// Calculate vector from camera to mapblock center. Because we only need relation between
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// coordinates we scale by 2 to avoid precision loss.
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v3s16 precise_look = 2 * (block_pos_nodes - cam_pos_nodes) + MAP_BLOCKSIZE - 1;
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// dominant axis flag
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u8 dominant_axis = (abs(precise_look.X) > abs(precise_look.Y) && abs(precise_look.X) > abs(precise_look.Z)) |
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((abs(precise_look.Y) > abs(precise_look.Z) && abs(precise_look.Y) > abs(precise_look.X)) << 1) |
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((abs(precise_look.Z) > abs(precise_look.X) && abs(precise_look.Z) > abs(precise_look.Y)) << 2);
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// Queue next blocks for processing:
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// - Examine "far" sides of the current blocks, i.e. never move towards the camera
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// - Only traverse the sides that are not occluded
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// - Only traverse the sides that are not opaque
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// When queueing, mark the relevant side on the next block as 'visible'
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for (s16 axis = 0; axis < 3; axis++) {
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// Select a bit from transparent_sides for the side
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u8 far_side_mask = 1 << (2 * axis);
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// axis flag
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u8 my_side = 1 << axis;
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u8 adjacent_sides = my_side ^ 0x07;
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auto traverse_far_side = [&](s8 next_pos_offset) {
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// far side is visible if adjacent near sides are transparent, or if opposite side on dominant axis is transparent
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bool side_visible = ((near_transparency & adjacent_sides) | (near_transparency & my_side & dominant_axis)) != 0;
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side_visible = side_visible && ((far_side_mask & transparent_sides) != 0);
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v3s16 next_pos = block_coord;
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next_pos[axis] += next_pos_offset;
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// If a side is a see-through, mark the next block's side as visible, and queue
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if (side_visible) {
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auto &next_flags = blocks_seen.getChunk(next_pos).getBits(next_pos);
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next_flags |= my_side;
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blocks_to_consider.push(next_pos);
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}
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else {
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sides_skipped++;
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}
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};
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// Test the '-' direction of the axis
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if (look[axis] <= 0 && block_coord[axis] > p_blocks_min[axis])
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traverse_far_side(-1);
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// Test the '+' direction of the axis
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far_side_mask <<= 1;
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if (look[axis] >= 0 && block_coord[axis] < p_blocks_max[axis])
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traverse_far_side(+1);
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}
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}
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g_profiler->avg("MapBlocks occlusion culled [#]", blocks_occlusion_culled);
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g_profiler->avg("MapBlocks sides skipped [#]", sides_skipped);
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g_profiler->avg("MapBlocks examined [#]", blocks_visited);
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g_profiler->avg("MapBlocks drawn [#]", m_drawlist.size());
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}
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}
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else {
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m_drawlist.clear();
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ScopeProfiler sp(g_profiler, "CM::updateDrawList()", SPT_AVG);
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m_needs_update_drawlist = false;
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v3s16 cam_pos_nodes = floatToInt(m_camera_position, BS);
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for (auto &i : m_drawlist) {
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v3s16 p_blocks_min;
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MapBlock *block = i.second;
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v3s16 p_blocks_max;
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block->refDrop();
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getBlocksInViewRange(cam_pos_nodes, &p_blocks_min, &p_blocks_max);
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}
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m_drawlist.clear();
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v3s16 cam_pos_nodes = floatToInt(m_camera_position, BS);
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// Number of blocks occlusion culled
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u32 blocks_occlusion_culled = 0;
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// Blocks visited by the algorithm
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u32 blocks_visited = 0;
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// Block sides that were not traversed
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u32 sides_skipped = 0;
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v3s16 p_blocks_min;
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// No occlusion culling when free_move is on and camera is inside ground
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v3s16 p_blocks_max;
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bool occlusion_culling_enabled = true;
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getBlocksInViewRange(cam_pos_nodes, &p_blocks_min, &p_blocks_max);
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if (m_control.allow_noclip) {
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MapNode n = getNode(cam_pos_nodes);
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// Number of blocks currently loaded by the client
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if (n.getContent() == CONTENT_IGNORE || m_nodedef->get(n).solidness == 2)
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u32 blocks_loaded = 0;
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occlusion_culling_enabled = false;
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// Number of blocks with mesh in rendering range
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u32 blocks_in_range_with_mesh = 0;
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// Number of blocks occlusion culled
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u32 blocks_occlusion_culled = 0;
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// No occlusion culling when free_move is on and camera is inside ground
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bool occlusion_culling_enabled = true;
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if (m_control.allow_noclip) {
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MapNode n = getNode(cam_pos_nodes);
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if (n.getContent() == CONTENT_IGNORE || m_nodedef->get(n).solidness == 2)
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occlusion_culling_enabled = false;
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}
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v3s16 camera_block = getContainerPos(cam_pos_nodes, MAP_BLOCKSIZE);
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m_drawlist = std::map<v3s16, MapBlock*, MapBlockComparer>(MapBlockComparer(camera_block));
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auto is_frustum_culled = m_client->getCamera()->getFrustumCuller();
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// Uncomment to debug occluded blocks in the wireframe mode
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// TODO: Include this as a flag for an extended debugging setting
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//if (occlusion_culling_enabled && m_control.show_wireframe)
|
|
||||||
// occlusion_culling_enabled = porting::getTimeS() & 1;
|
|
||||||
|
|
||||||
for (const auto §or_it : m_sectors) {
|
|
||||||
MapSector *sector = sector_it.second;
|
|
||||||
v2s16 sp = sector->getPos();
|
|
||||||
|
|
||||||
blocks_loaded += sector->size();
|
|
||||||
if (!m_control.range_all) {
|
|
||||||
if (sp.X < p_blocks_min.X || sp.X > p_blocks_max.X ||
|
|
||||||
sp.Y < p_blocks_min.Z || sp.Y > p_blocks_max.Z)
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
MapBlockVect sectorblocks;
|
|
||||||
sector->getBlocks(sectorblocks);
|
|
||||||
|
|
||||||
/*
|
|
||||||
Loop through blocks in sector
|
|
||||||
*/
|
|
||||||
|
|
||||||
u32 sector_blocks_drawn = 0;
|
|
||||||
|
|
||||||
for (MapBlock *block : sectorblocks) {
|
|
||||||
/*
|
|
||||||
Compare block position to camera position, skip
|
|
||||||
if not seen on display
|
|
||||||
*/
|
|
||||||
|
|
||||||
if (!block->mesh) {
|
|
||||||
// Ignore if mesh doesn't exist
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
v3s16 block_coord = block->getPos();
|
|
||||||
v3f mesh_sphere_center = intToFloat(block->getPosRelative(), BS)
|
|
||||||
+ block->mesh->getBoundingSphereCenter();
|
|
||||||
f32 mesh_sphere_radius = block->mesh->getBoundingRadius();
|
|
||||||
// First, perform a simple distance check.
|
|
||||||
if (!m_control.range_all &&
|
|
||||||
mesh_sphere_center.getDistanceFrom(intToFloat(cam_pos_nodes, BS)) >
|
|
||||||
m_control.wanted_range * BS + mesh_sphere_radius)
|
|
||||||
continue; // Out of range, skip.
|
|
||||||
|
|
||||||
// Keep the block alive as long as it is in range.
|
|
||||||
block->resetUsageTimer();
|
|
||||||
blocks_in_range_with_mesh++;
|
|
||||||
|
|
||||||
// Frustum culling
|
|
||||||
// Only do coarse culling here, to account for fast camera movement.
|
|
||||||
// This is needed because this function is not called every frame.
|
|
||||||
constexpr float frustum_cull_extra_radius = 300.0f;
|
|
||||||
if (is_frustum_culled(mesh_sphere_center,
|
|
||||||
mesh_sphere_radius + frustum_cull_extra_radius))
|
|
||||||
continue;
|
|
||||||
|
|
||||||
// Occlusion culling
|
|
||||||
if (occlusion_culling_enabled && isBlockOccluded(block, cam_pos_nodes)) {
|
|
||||||
blocks_occlusion_culled++;
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
|
|
||||||
// Add to set
|
|
||||||
block->refGrab();
|
|
||||||
m_drawlist[block_coord] = block;
|
|
||||||
|
|
||||||
sector_blocks_drawn++;
|
|
||||||
} // foreach sectorblocks
|
|
||||||
|
|
||||||
if (sector_blocks_drawn != 0)
|
|
||||||
m_last_drawn_sectors.insert(sp);
|
|
||||||
}
|
|
||||||
|
|
||||||
g_profiler->avg("MapBlock meshes in range [#]", blocks_in_range_with_mesh);
|
|
||||||
g_profiler->avg("MapBlocks occlusion culled [#]", blocks_occlusion_culled);
|
|
||||||
g_profiler->avg("MapBlocks drawn [#]", m_drawlist.size());
|
|
||||||
g_profiler->avg("MapBlocks loaded [#]", blocks_loaded);
|
|
||||||
}
|
}
|
||||||
|
|
||||||
|
v3s16 camera_block = getContainerPos(cam_pos_nodes, MAP_BLOCKSIZE);
|
||||||
|
m_drawlist = std::map<v3s16, MapBlock*, MapBlockComparer>(MapBlockComparer(camera_block));
|
||||||
|
|
||||||
|
auto is_frustum_culled = m_client->getCamera()->getFrustumCuller();
|
||||||
|
|
||||||
|
// Uncomment to debug occluded blocks in the wireframe mode
|
||||||
|
// TODO: Include this as a flag for an extended debugging setting
|
||||||
|
// if (occlusion_culling_enabled && m_control.show_wireframe)
|
||||||
|
// occlusion_culling_enabled = porting::getTimeS() & 1;
|
||||||
|
|
||||||
|
std::queue<v3s16> blocks_to_consider;
|
||||||
|
|
||||||
|
// Bits per block:
|
||||||
|
// [ visited | 0 | 0 | 0 | 0 | Z visible | Y visible | X visible ]
|
||||||
|
MapBlockFlags blocks_seen(p_blocks_min, p_blocks_max);
|
||||||
|
|
||||||
|
// Start breadth-first search with the block the camera is in
|
||||||
|
blocks_to_consider.push(camera_block);
|
||||||
|
blocks_seen.getChunk(camera_block).getBits(camera_block) = 0x07; // mark all sides as visible
|
||||||
|
|
||||||
|
// Recursively walk the space and pick mapblocks for drawing
|
||||||
|
while (blocks_to_consider.size() > 0) {
|
||||||
|
|
||||||
|
v3s16 block_coord = blocks_to_consider.front();
|
||||||
|
blocks_to_consider.pop();
|
||||||
|
|
||||||
|
auto &flags = blocks_seen.getChunk(block_coord).getBits(block_coord);
|
||||||
|
|
||||||
|
// Only visit each block once (it may have been queued up to three times)
|
||||||
|
if ((flags & 0x80) == 0x80)
|
||||||
|
continue;
|
||||||
|
flags |= 0x80;
|
||||||
|
|
||||||
|
blocks_visited++;
|
||||||
|
|
||||||
|
// Get the sector, block and mesh
|
||||||
|
MapSector *sector = this->getSectorNoGenerate(v2s16(block_coord.X, block_coord.Z));
|
||||||
|
|
||||||
|
if (!sector)
|
||||||
|
continue;
|
||||||
|
|
||||||
|
MapBlock *block = sector->getBlockNoCreateNoEx(block_coord.Y);
|
||||||
|
|
||||||
|
MapBlockMesh *mesh = block ? block->mesh : nullptr;
|
||||||
|
|
||||||
|
|
||||||
|
// Calculate the coordinates for range and frutum culling
|
||||||
|
v3f mesh_sphere_center;
|
||||||
|
f32 mesh_sphere_radius;
|
||||||
|
|
||||||
|
v3s16 block_pos_nodes = block_coord * MAP_BLOCKSIZE;
|
||||||
|
|
||||||
|
if (mesh) {
|
||||||
|
mesh_sphere_center = intToFloat(block_pos_nodes, BS)
|
||||||
|
+ mesh->getBoundingSphereCenter();
|
||||||
|
mesh_sphere_radius = mesh->getBoundingRadius();
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
mesh_sphere_center = intToFloat(block_pos_nodes, BS) + v3f((MAP_BLOCKSIZE * 0.5f - 0.5f) * BS);
|
||||||
|
mesh_sphere_radius = 0.0f;
|
||||||
|
}
|
||||||
|
|
||||||
|
// First, perform a simple distance check.
|
||||||
|
if (!m_control.range_all &&
|
||||||
|
mesh_sphere_center.getDistanceFrom(intToFloat(cam_pos_nodes, BS)) >
|
||||||
|
m_control.wanted_range * BS + mesh_sphere_radius)
|
||||||
|
continue; // Out of range, skip.
|
||||||
|
|
||||||
|
// Frustum culling
|
||||||
|
// Only do coarse culling here, to account for fast camera movement.
|
||||||
|
// This is needed because this function is not called every frame.
|
||||||
|
float frustum_cull_extra_radius = 300.0f;
|
||||||
|
if (is_frustum_culled(mesh_sphere_center,
|
||||||
|
mesh_sphere_radius + frustum_cull_extra_radius))
|
||||||
|
continue;
|
||||||
|
|
||||||
|
// Calculate the vector from the camera block to the current block
|
||||||
|
// We use it to determine through which sides of the current block we can continue the search
|
||||||
|
v3s16 look = block_coord - camera_block;
|
||||||
|
|
||||||
|
// Occluded near sides will further occlude the far sides
|
||||||
|
u8 visible_outer_sides = flags & 0x07;
|
||||||
|
|
||||||
|
// Raytraced occlusion culling - send rays from the camera to the block's corners
|
||||||
|
if (occlusion_culling_enabled && m_enable_raytraced_culling &&
|
||||||
|
block && mesh &&
|
||||||
|
visible_outer_sides != 0x07 && isBlockOccluded(block, cam_pos_nodes)) {
|
||||||
|
blocks_occlusion_culled++;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
|
||||||
|
// The block is visible, add to the draw list
|
||||||
|
if (mesh) {
|
||||||
|
// Add to set
|
||||||
|
block->refGrab();
|
||||||
|
m_drawlist[block_coord] = block;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Decide which sides to traverse next or to block away
|
||||||
|
|
||||||
|
// First, find the near sides that would occlude the far sides
|
||||||
|
// * A near side can itself be occluded by a nearby block (the test above ^^)
|
||||||
|
// * A near side can be visible but fully opaque by itself (e.g. ground at the 0 level)
|
||||||
|
|
||||||
|
// mesh solid sides are +Z-Z+Y-Y+X-X
|
||||||
|
// if we are inside the block's coordinates on an axis,
|
||||||
|
// treat these sides as opaque, as they should not allow to reach the far sides
|
||||||
|
u8 block_inner_sides = (look.X == 0 ? 3 : 0) |
|
||||||
|
(look.Y == 0 ? 12 : 0) |
|
||||||
|
(look.Z == 0 ? 48 : 0);
|
||||||
|
|
||||||
|
// get the mask for the sides that are relevant based on the direction
|
||||||
|
u8 near_inner_sides = (look.X > 0 ? 1 : 2) |
|
||||||
|
(look.Y > 0 ? 4 : 8) |
|
||||||
|
(look.Z > 0 ? 16 : 32);
|
||||||
|
|
||||||
|
// This bitset is +Z-Z+Y-Y+X-X (See MapBlockMesh), and axis is XYZ.
|
||||||
|
// Get he block's transparent sides
|
||||||
|
u8 transparent_sides = (occlusion_culling_enabled && block) ? ~block->solid_sides : 0x3F;
|
||||||
|
|
||||||
|
// compress block transparent sides to ZYX mask of see-through axes
|
||||||
|
u8 near_transparency = (block_inner_sides == 0x3F) ? near_inner_sides : (transparent_sides & near_inner_sides);
|
||||||
|
|
||||||
|
// when we are inside the camera block, do not block any sides
|
||||||
|
if (block_inner_sides == 0x3F)
|
||||||
|
block_inner_sides = 0;
|
||||||
|
|
||||||
|
near_transparency &= ~block_inner_sides & 0x3F;
|
||||||
|
|
||||||
|
near_transparency |= (near_transparency >> 1);
|
||||||
|
near_transparency = (near_transparency & 1) |
|
||||||
|
((near_transparency >> 1) & 2) |
|
||||||
|
((near_transparency >> 2) & 4);
|
||||||
|
|
||||||
|
// combine with known visible sides that matter
|
||||||
|
near_transparency &= visible_outer_sides;
|
||||||
|
|
||||||
|
// The rule for any far side to be visible:
|
||||||
|
// * Any of the adjacent near sides is transparent (different axes)
|
||||||
|
// * The opposite near side (same axis) is transparent, if it is the dominant axis of the look vector
|
||||||
|
|
||||||
|
// Calculate vector from camera to mapblock center. Because we only need relation between
|
||||||
|
// coordinates we scale by 2 to avoid precision loss.
|
||||||
|
v3s16 precise_look = 2 * (block_pos_nodes - cam_pos_nodes) + MAP_BLOCKSIZE - 1;
|
||||||
|
|
||||||
|
// dominant axis flag
|
||||||
|
u8 dominant_axis = (abs(precise_look.X) > abs(precise_look.Y) && abs(precise_look.X) > abs(precise_look.Z)) |
|
||||||
|
((abs(precise_look.Y) > abs(precise_look.Z) && abs(precise_look.Y) > abs(precise_look.X)) << 1) |
|
||||||
|
((abs(precise_look.Z) > abs(precise_look.X) && abs(precise_look.Z) > abs(precise_look.Y)) << 2);
|
||||||
|
|
||||||
|
// Queue next blocks for processing:
|
||||||
|
// - Examine "far" sides of the current blocks, i.e. never move towards the camera
|
||||||
|
// - Only traverse the sides that are not occluded
|
||||||
|
// - Only traverse the sides that are not opaque
|
||||||
|
// When queueing, mark the relevant side on the next block as 'visible'
|
||||||
|
for (s16 axis = 0; axis < 3; axis++) {
|
||||||
|
|
||||||
|
// Select a bit from transparent_sides for the side
|
||||||
|
u8 far_side_mask = 1 << (2 * axis);
|
||||||
|
|
||||||
|
// axis flag
|
||||||
|
u8 my_side = 1 << axis;
|
||||||
|
u8 adjacent_sides = my_side ^ 0x07;
|
||||||
|
|
||||||
|
auto traverse_far_side = [&](s8 next_pos_offset) {
|
||||||
|
// far side is visible if adjacent near sides are transparent, or if opposite side on dominant axis is transparent
|
||||||
|
bool side_visible = ((near_transparency & adjacent_sides) | (near_transparency & my_side & dominant_axis)) != 0;
|
||||||
|
side_visible = side_visible && ((far_side_mask & transparent_sides) != 0);
|
||||||
|
|
||||||
|
v3s16 next_pos = block_coord;
|
||||||
|
next_pos[axis] += next_pos_offset;
|
||||||
|
|
||||||
|
// If a side is a see-through, mark the next block's side as visible, and queue
|
||||||
|
if (side_visible) {
|
||||||
|
auto &next_flags = blocks_seen.getChunk(next_pos).getBits(next_pos);
|
||||||
|
next_flags |= my_side;
|
||||||
|
blocks_to_consider.push(next_pos);
|
||||||
|
}
|
||||||
|
else {
|
||||||
|
sides_skipped++;
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
|
||||||
|
// Test the '-' direction of the axis
|
||||||
|
if (look[axis] <= 0 && block_coord[axis] > p_blocks_min[axis])
|
||||||
|
traverse_far_side(-1);
|
||||||
|
|
||||||
|
// Test the '+' direction of the axis
|
||||||
|
far_side_mask <<= 1;
|
||||||
|
|
||||||
|
if (look[axis] >= 0 && block_coord[axis] < p_blocks_max[axis])
|
||||||
|
traverse_far_side(+1);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
g_profiler->avg("MapBlocks occlusion culled [#]", blocks_occlusion_culled);
|
||||||
|
g_profiler->avg("MapBlocks sides skipped [#]", sides_skipped);
|
||||||
|
g_profiler->avg("MapBlocks examined [#]", blocks_visited);
|
||||||
|
g_profiler->avg("MapBlocks drawn [#]", m_drawlist.size());
|
||||||
}
|
}
|
||||||
|
|
||||||
void ClientMap::touchMapBlocks()
|
void ClientMap::touchMapBlocks()
|
||||||
{
|
{
|
||||||
if (!m_new_occlusion_culler)
|
|
||||||
return;
|
|
||||||
|
|
||||||
v3s16 cam_pos_nodes = floatToInt(m_camera_position, BS);
|
v3s16 cam_pos_nodes = floatToInt(m_camera_position, BS);
|
||||||
|
|
||||||
v3s16 p_blocks_min;
|
v3s16 p_blocks_min;
|
||||||
|
|||||||
@ -66,7 +66,6 @@ void set_default_settings()
|
|||||||
settings->setDefault("max_out_chat_queue_size", "20");
|
settings->setDefault("max_out_chat_queue_size", "20");
|
||||||
settings->setDefault("pause_on_lost_focus", "false");
|
settings->setDefault("pause_on_lost_focus", "false");
|
||||||
settings->setDefault("enable_split_login_register", "true");
|
settings->setDefault("enable_split_login_register", "true");
|
||||||
settings->setDefault("occlusion_culler", "bfs");
|
|
||||||
settings->setDefault("enable_raytraced_culling", "true");
|
settings->setDefault("enable_raytraced_culling", "true");
|
||||||
settings->setDefault("chat_weblink_color", "#8888FF");
|
settings->setDefault("chat_weblink_color", "#8888FF");
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user