From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Aikar Date: Thu, 4 Jun 2020 22:43:29 -0400 Subject: [PATCH] Optimize Light Engine Massive update to light to improve performance and chunk loading/generation. 1) Massive bit packing/unpacking optimizations and inlining. A lot of performance has to do with constant packing and unpacking of bits. We now inline a most bit operations, and re-use base x/y/z bits in many places. This helps with cpu level processing to just do all the math at once instead of having to jump in and out of function calls. This much logic also is likely over the JVM Inline limit for JIT too. 2) Applied a few of JellySquid's Phosphor mod optimizations such as - ensuring we don't notify neighbor chunks when neighbor chunk doesn't need to be notified - reduce hasLight checks in initializing light, and prob some more, they are tagged JellySquid where phosphor influence was used. 3) Optimize hot path accesses to getting updating chunk to have less branching 4) Optimize getBlock accesses to have less branching, and less unpacking 5) Have a separate urgent bucket for chunk light tasks. These tasks will always cut in line over non blocking light tasks. 6) Retain chunk priority while light tasks are enqueued. So if a task comes in at high priority but the queue is full of tasks already at a lower priority, before the task was simply added to the end. Now it can cut in line to the front. this applies for both urgent and non urgent tasks. 7) Buffer non urgent tasks even if queueUpdate is called multiple times to improve efficiency. 8) Fix NPE risk that crashes server in getting nibble data diff --git a/src/main/java/net/minecraft/server/level/ChunkProviderServer.java b/src/main/java/net/minecraft/server/level/ChunkProviderServer.java index 19e02d12bb0c5a73066f7c57da40277918276210..f46f3ca87badefd668e70d792de5b3d3c0172a68 100644 --- a/src/main/java/net/minecraft/server/level/ChunkProviderServer.java +++ b/src/main/java/net/minecraft/server/level/ChunkProviderServer.java @@ -1070,7 +1070,7 @@ public class ChunkProviderServer extends IChunkProvider { if (ChunkProviderServer.this.tickDistanceManager()) { return true; } else { - ChunkProviderServer.this.lightEngine.queueUpdate(); + //ChunkProviderServer.this.lightEngine.queueUpdate(); // Paper - not needed return super.executeNext() || execChunkTask; // Paper } } finally { diff --git a/src/main/java/net/minecraft/server/level/LightEngineGraphSection.java b/src/main/java/net/minecraft/server/level/LightEngineGraphSection.java index c8bb040e7ed848877ec9c2f9b30dcda137cadf35..4ee7070364a8989eece4fa4237b529926821f9c9 100644 --- a/src/main/java/net/minecraft/server/level/LightEngineGraphSection.java +++ b/src/main/java/net/minecraft/server/level/LightEngineGraphSection.java @@ -16,14 +16,20 @@ public abstract class LightEngineGraphSection extends LightEngineGraph { @Override protected void a(long i, int j, boolean flag) { + // Paper start + int x = (int) (i >> 42); + int y = (int) (i << 44 >> 44); + int z = (int) (i << 22 >> 42); + // Paper end for (int k = -1; k <= 1; ++k) { for (int l = -1; l <= 1; ++l) { for (int i1 = -1; i1 <= 1; ++i1) { - long j1 = SectionPosition.a(i, k, l, i1); + if (k == 0 && l == 0 && i1 == 0) continue; // Paper + long j1 = (((long) (x + k) & 4194303L) << 42) | (((long) (y + l) & 1048575L)) | (((long) (z + i1) & 4194303L) << 20); // Paper - if (j1 != i) { + //if (j1 != i) { // Paper - checked above this.b(i, j1, j, flag); - } + //} // Paper } } } @@ -34,10 +40,15 @@ public abstract class LightEngineGraphSection extends LightEngineGraph { protected int a(long i, long j, int k) { int l = k; + // Paper start + int x = (int) (i >> 42); + int y = (int) (i << 44 >> 44); + int z = (int) (i << 22 >> 42); + // Paper end for (int i1 = -1; i1 <= 1; ++i1) { for (int j1 = -1; j1 <= 1; ++j1) { for (int k1 = -1; k1 <= 1; ++k1) { - long l1 = SectionPosition.a(i, i1, j1, k1); + long l1 = (((long) (x + i1) & 4194303L) << 42) | (((long) (y + j1) & 1048575L)) | (((long) (z + k1) & 4194303L) << 20); // Paper if (l1 == i) { l1 = Long.MAX_VALUE; diff --git a/src/main/java/net/minecraft/server/level/LightEngineThreaded.java b/src/main/java/net/minecraft/server/level/LightEngineThreaded.java index e066848127cb9a42e8c39422691cc65132cac6bb..0b80569648c1df01aab52d0b8d47028cda925d86 100644 --- a/src/main/java/net/minecraft/server/level/LightEngineThreaded.java +++ b/src/main/java/net/minecraft/server/level/LightEngineThreaded.java @@ -1,6 +1,7 @@ package net.minecraft.server.level; import com.mojang.datafixers.util.Pair; +import it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap; // Paper import it.unimi.dsi.fastutil.objects.ObjectArrayList; import it.unimi.dsi.fastutil.objects.ObjectList; import it.unimi.dsi.fastutil.objects.ObjectListIterator; @@ -16,6 +17,7 @@ import net.minecraft.util.thread.ThreadedMailbox; import net.minecraft.world.level.ChunkCoordIntPair; import net.minecraft.world.level.EnumSkyBlock; import net.minecraft.world.level.chunk.ChunkSection; +import net.minecraft.world.level.chunk.ChunkStatus; import net.minecraft.world.level.chunk.IChunkAccess; import net.minecraft.world.level.chunk.ILightAccess; import net.minecraft.world.level.chunk.NibbleArray; @@ -27,15 +29,149 @@ public class LightEngineThreaded extends LightEngine implements AutoCloseable { private static final Logger LOGGER = LogManager.getLogger(); private final ThreadedMailbox b; - private final ObjectList> c = new ObjectArrayList(); - private final PlayerChunkMap d; + // Paper start + private static final int MAX_PRIORITIES = PlayerChunkMap.GOLDEN_TICKET + 2; + + private boolean isChunkLightStatus(long pair) { + PlayerChunk playerChunk = playerChunkMap.getVisibleChunk(pair); + if (playerChunk == null) { + return false; + } + ChunkStatus status = PlayerChunk.getChunkStatus(playerChunk.getTicketLevel()); + return status != null && status.isAtLeastStatus(ChunkStatus.LIGHT); + } + + static class ChunkLightQueue { + public boolean shouldFastUpdate; + java.util.ArrayDeque pre = new java.util.ArrayDeque(); + java.util.ArrayDeque post = new java.util.ArrayDeque(); + + ChunkLightQueue(long chunk) {} + } + + static class PendingLightTask { + long chunkId; + IntSupplier priority; + Runnable pre; + Runnable post; + boolean fastUpdate; + + public PendingLightTask(long chunkId, IntSupplier priority, Runnable pre, Runnable post, boolean fastUpdate) { + this.chunkId = chunkId; + this.priority = priority; + this.pre = pre; + this.post = post; + this.fastUpdate = fastUpdate; + } + } + + + // Retain the chunks priority level for queued light tasks + class LightQueue { + private int size = 0; + private final Long2ObjectLinkedOpenHashMap[] buckets = new Long2ObjectLinkedOpenHashMap[MAX_PRIORITIES]; + private final java.util.concurrent.ConcurrentLinkedQueue pendingTasks = new java.util.concurrent.ConcurrentLinkedQueue<>(); + private final java.util.concurrent.ConcurrentLinkedQueue priorityChanges = new java.util.concurrent.ConcurrentLinkedQueue<>(); + + private LightQueue() { + for (int i = 0; i < buckets.length; i++) { + buckets[i] = new Long2ObjectLinkedOpenHashMap<>(); + } + } + + public void changePriority(long pair, int currentPriority, int priority) { + this.priorityChanges.add(() -> { + ChunkLightQueue remove = this.buckets[currentPriority].remove(pair); + if (remove != null) { + ChunkLightQueue existing = this.buckets[Math.max(1, priority)].put(pair, remove); + if (existing != null) { + remove.pre.addAll(existing.pre); + remove.post.addAll(existing.post); + } + } + }); + } + + public final void addChunk(long chunkId, IntSupplier priority, Runnable pre, Runnable post) { + pendingTasks.add(new PendingLightTask(chunkId, priority, pre, post, true)); + queueUpdate(); + } + + public final void add(long chunkId, IntSupplier priority, LightEngineThreaded.Update type, Runnable run) { + pendingTasks.add(new PendingLightTask(chunkId, priority, type == Update.PRE_UPDATE ? run : null, type == Update.POST_UPDATE ? run : null, false)); + } + public final void add(PendingLightTask update) { + int priority = update.priority.getAsInt(); + ChunkLightQueue lightQueue = this.buckets[priority].computeIfAbsent(update.chunkId, ChunkLightQueue::new); + + if (update.pre != null) { + this.size++; + lightQueue.pre.add(update.pre); + } + if (update.post != null) { + this.size++; + lightQueue.post.add(update.post); + } + if (update.fastUpdate) { + lightQueue.shouldFastUpdate = true; + } + } + + public final boolean isEmpty() { + return this.size == 0 && this.pendingTasks.isEmpty(); + } + + public final int size() { + return this.size; + } + + public boolean poll(java.util.List pre, java.util.List post) { + PendingLightTask pending; + while ((pending = pendingTasks.poll()) != null) { + add(pending); + } + Runnable run; + while ((run = priorityChanges.poll()) != null) { + run.run(); + } + boolean hasWork = false; + Long2ObjectLinkedOpenHashMap[] buckets = this.buckets; + int priority = 0; + while (priority < MAX_PRIORITIES && !isEmpty()) { + Long2ObjectLinkedOpenHashMap bucket = buckets[priority]; + if (bucket.isEmpty()) { + priority++; + if (hasWork) { + return true; + } else { + continue; + } + } + ChunkLightQueue queue = bucket.removeFirst(); + this.size -= queue.pre.size() + queue.post.size(); + pre.addAll(queue.pre); + post.addAll(queue.post); + queue.pre.clear(); + queue.post.clear(); + hasWork = true; + if (queue.shouldFastUpdate) { + return true; + } + } + return hasWork; + } + } + + final LightQueue queue = new LightQueue(); + // Paper end + private final PlayerChunkMap d; private final PlayerChunkMap playerChunkMap; // Paper private final Mailbox> e; private volatile int f = 5; private final AtomicBoolean g = new AtomicBoolean(); public LightEngineThreaded(ILightAccess ilightaccess, PlayerChunkMap playerchunkmap, boolean flag, ThreadedMailbox threadedmailbox, Mailbox> mailbox) { super(ilightaccess, true, flag); - this.d = playerchunkmap; + this.d = playerchunkmap; this.playerChunkMap = d; // Paper this.e = mailbox; this.b = threadedmailbox; } @@ -122,13 +258,9 @@ public class LightEngineThreaded extends LightEngine implements AutoCloseable { } private void a(int i, int j, IntSupplier intsupplier, LightEngineThreaded.Update lightenginethreaded_update, Runnable runnable) { - this.e.a(ChunkTaskQueueSorter.a(() -> { - this.c.add(Pair.of(lightenginethreaded_update, runnable)); - if (this.c.size() >= this.f) { - this.b(); - } - - }, ChunkCoordIntPair.pair(i, j), intsupplier)); + // Paper start - replace method + this.queue.add(ChunkCoordIntPair.pair(i, j), intsupplier, lightenginethreaded_update, runnable); + // Paper end } @Override @@ -145,8 +277,19 @@ public class LightEngineThreaded extends LightEngine implements AutoCloseable { public CompletableFuture a(IChunkAccess ichunkaccess, boolean flag) { ChunkCoordIntPair chunkcoordintpair = ichunkaccess.getPos(); - ichunkaccess.b(false); - this.a(chunkcoordintpair.x, chunkcoordintpair.z, LightEngineThreaded.Update.PRE_UPDATE, SystemUtils.a(() -> { + // Paper start + //ichunkaccess.b(false); // Don't need to disable this + long pair = chunkcoordintpair.pair(); + CompletableFuture future = new CompletableFuture<>(); + IntSupplier prioritySupplier = playerChunkMap.getPrioritySupplier(pair); + boolean[] skippedPre = {false}; + this.queue.addChunk(pair, prioritySupplier, SystemUtils.a(() -> { + if (!isChunkLightStatus(pair)) { + future.complete(ichunkaccess); + skippedPre[0] = true; + return; + } + // Paper end ChunkSection[] achunksection = ichunkaccess.getSections(); for (int i = 0; i < 16; ++i) { @@ -164,55 +307,48 @@ public class LightEngineThreaded extends LightEngine implements AutoCloseable { }); } - this.d.c(chunkcoordintpair); + // this.d.c(chunkcoordintpair); // Paper - move into post task below }, () -> { return "lightChunk " + chunkcoordintpair + " " + flag; - })); - return CompletableFuture.supplyAsync(() -> { + // Paper start - merge the 2 together + }), () -> { + this.d.c(chunkcoordintpair); // Paper - release light tickets as post task to ensure they stay loaded until fully done + if (skippedPre[0]) return; // Paper - future's already complete ichunkaccess.b(true); super.b(chunkcoordintpair, false); - return ichunkaccess; - }, (runnable) -> { - this.a(chunkcoordintpair.x, chunkcoordintpair.z, LightEngineThreaded.Update.POST_UPDATE, runnable); + // Paper start + future.complete(ichunkaccess); }); + return future; + // Paper end } public void queueUpdate() { - if ((!this.c.isEmpty() || super.a()) && this.g.compareAndSet(false, true)) { + if ((!this.queue.isEmpty() || super.a()) && this.g.compareAndSet(false, true)) { // Paper this.b.a((() -> { // Paper - decompile error this.b(); this.g.set(false); + queueUpdate(); // Paper - if we still have work to do, do it! })); } } + // Paper start - replace impl + private final java.util.List pre = new java.util.ArrayList<>(); + private final java.util.List post = new java.util.ArrayList<>(); private void b() { - int i = Math.min(this.c.size(), this.f); - ObjectListIterator> objectlistiterator = this.c.iterator(); - - Pair pair; - int j; - - for (j = 0; objectlistiterator.hasNext() && j < i; ++j) { - pair = (Pair) objectlistiterator.next(); - if (pair.getFirst() == LightEngineThreaded.Update.PRE_UPDATE) { - ((Runnable) pair.getSecond()).run(); - } + if (queue.poll(pre, post)) { + pre.forEach(Runnable::run); + pre.clear(); + super.a(Integer.MAX_VALUE, true, true); + post.forEach(Runnable::run); + post.clear(); + } else { + // might have level updates to go still + super.a(Integer.MAX_VALUE, true, true); } - - objectlistiterator.back(j); - super.a(Integer.MAX_VALUE, true, true); - - for (j = 0; objectlistiterator.hasNext() && j < i; ++j) { - pair = (Pair) objectlistiterator.next(); - if (pair.getFirst() == LightEngineThreaded.Update.POST_UPDATE) { - ((Runnable) pair.getSecond()).run(); - } - - objectlistiterator.remove(); - } - + // Paper end } public void a(int i) { diff --git a/src/main/java/net/minecraft/server/level/PlayerChunk.java b/src/main/java/net/minecraft/server/level/PlayerChunk.java index 88022e3ccd04f9c041ced68be66a95247c1017e9..d6a5a0b17308913a5efd97cd27fabd0825ef68c6 100644 --- a/src/main/java/net/minecraft/server/level/PlayerChunk.java +++ b/src/main/java/net/minecraft/server/level/PlayerChunk.java @@ -754,6 +754,7 @@ public class PlayerChunk { ioPriority = com.destroystokyo.paper.io.PrioritizedTaskQueue.HIGH_PRIORITY; } chunkMap.world.asyncChunkTaskManager.raisePriority(location.x, location.z, ioPriority); + chunkMap.world.getChunkProvider().getLightEngine().queue.changePriority(location.pair(), getCurrentPriority(), priority); } if (getCurrentPriority() != priority) { this.u.a(this.location, this::getCurrentPriority, priority, this::setPriority); // use preferred priority diff --git a/src/main/java/net/minecraft/server/level/PlayerChunkMap.java b/src/main/java/net/minecraft/server/level/PlayerChunkMap.java index 7318103feafd12ed631f907a450c9dc3d665a9a3..b47cd2a8fb4920531d80acfcfe40f8211fedc9ae 100644 --- a/src/main/java/net/minecraft/server/level/PlayerChunkMap.java +++ b/src/main/java/net/minecraft/server/level/PlayerChunkMap.java @@ -99,6 +99,7 @@ import net.minecraft.world.level.chunk.storage.RegionFile; import net.minecraft.world.level.levelgen.structure.StructureStart; import net.minecraft.world.level.levelgen.structure.templatesystem.DefinedStructureManager; import net.minecraft.world.level.storage.Convertable; +import net.minecraft.world.level.storage.WorldDataServer; import net.minecraft.world.level.storage.WorldPersistentData; import net.minecraft.world.phys.Vec3D; import it.unimi.dsi.fastutil.objects.ObjectRBTreeSet; // Paper @@ -331,6 +332,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d { } // Paper end + private final java.util.concurrent.ExecutorService lightThread; public PlayerChunkMap(WorldServer worldserver, Convertable.ConversionSession convertable_conversionsession, DataFixer datafixer, DefinedStructureManager definedstructuremanager, Executor executor, IAsyncTaskHandler iasynctaskhandler, ILightAccess ilightaccess, ChunkGenerator chunkgenerator, WorldLoadListener worldloadlistener, Supplier supplier, int i, boolean flag) { super(new File(convertable_conversionsession.a(worldserver.getDimensionKey()), "region"), datafixer, flag); //this.visibleChunks = this.updatingChunks.clone(); // Paper - no more cloning @@ -362,7 +364,15 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d { Mailbox mailbox = Mailbox.a("main", iasynctaskhandler::a); this.worldLoadListener = worldloadlistener; - ThreadedMailbox lightthreaded; ThreadedMailbox threadedmailbox1 = lightthreaded = ThreadedMailbox.a(executor, "light"); // Paper + // Paper start - use light thread + ThreadedMailbox lightthreaded; ThreadedMailbox threadedmailbox1 = lightthreaded = ThreadedMailbox.a(lightThread = java.util.concurrent.Executors.newSingleThreadExecutor(r -> { + Thread thread = new Thread(r); + thread.setName(((WorldDataServer)world.getWorldData()).getName() + " - Light"); + thread.setDaemon(true); + thread.setPriority(Thread.NORM_PRIORITY+1); + return thread; + }), "light"); + // Paper end this.p = new ChunkTaskQueueSorter(ImmutableList.of(threadedmailbox, mailbox, threadedmailbox1), executor, Integer.MAX_VALUE); this.mailboxWorldGen = this.p.a(threadedmailbox, false); @@ -708,6 +718,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d { // Paper end } + protected final IntSupplier getPrioritySupplier(long i) { return c(i); } // Paper - OBFHELPER protected IntSupplier c(long i) { return () -> { PlayerChunk playerchunk = this.getVisibleChunk(i); @@ -835,6 +846,7 @@ public class PlayerChunkMap extends IChunkLoader implements PlayerChunk.d { @Override public void close() throws IOException { try { + this.lightThread.shutdown(); // Paper this.p.close(); this.world.asyncChunkTaskManager.close(true); // Paper - Required since we're closing regionfiles in the next line this.m.close(); diff --git a/src/main/java/net/minecraft/server/level/WorldServer.java b/src/main/java/net/minecraft/server/level/WorldServer.java index e7cebe1277cb8fc54a080b93b34a66a2e962119b..0e738ace7d37011547378954aae91f79c7ebd544 100644 --- a/src/main/java/net/minecraft/server/level/WorldServer.java +++ b/src/main/java/net/minecraft/server/level/WorldServer.java @@ -826,6 +826,7 @@ public class WorldServer extends World implements GeneratorAccessSeed { } gameprofilerfiller.exit(); timings.chunkTicksBlocks.stopTiming(); // Paper + getChunkProvider().getLightEngine().queueUpdate(); // Paper // Paper end } } diff --git a/src/main/java/net/minecraft/util/thread/ThreadedMailbox.java b/src/main/java/net/minecraft/util/thread/ThreadedMailbox.java index 2efca1fe92b2e93dcbf5337eea8855b1b2b9a564..72bfda620f073fd3c3e4c43d78583386dadf95e6 100644 --- a/src/main/java/net/minecraft/util/thread/ThreadedMailbox.java +++ b/src/main/java/net/minecraft/util/thread/ThreadedMailbox.java @@ -110,7 +110,8 @@ public class ThreadedMailbox implements Mailbox, AutoCloseable, Runnable { } - @Override + + public final void queue(T t0) { a(t0); } @Override // Paper - OBFHELPER public void a(T t0) { this.a.a(t0); this.f(); diff --git a/src/main/java/net/minecraft/world/level/chunk/NibbleArray.java b/src/main/java/net/minecraft/world/level/chunk/NibbleArray.java index 064d49a36dc1603c92a6bb8e9540ba9cc41a3335..3a85a89be2a736e5b6b7f08032f4becd6bb39ed1 100644 --- a/src/main/java/net/minecraft/world/level/chunk/NibbleArray.java +++ b/src/main/java/net/minecraft/world/level/chunk/NibbleArray.java @@ -10,6 +10,13 @@ import net.minecraft.server.MCUtil; public class NibbleArray { // Paper start + public static final NibbleArray EMPTY_NIBBLE_ARRAY = new NibbleArray() { + @Override + public byte[] asBytes() { + throw new IllegalStateException(); + } + }; + public long lightCacheKey = Long.MIN_VALUE; public static byte[] EMPTY_NIBBLE = new byte[2048]; private static final int nibbleBucketSizeMultiplier = Integer.getInteger("Paper.nibbleBucketSize", 3072); private static final int maxPoolSize = Integer.getInteger("Paper.maxNibblePoolSize", (int) Math.min(6, Math.max(1, Runtime.getRuntime().maxMemory() / 1024 / 1024 / 1024)) * (nibbleBucketSizeMultiplier * 8)); diff --git a/src/main/java/net/minecraft/world/level/lighting/LightEngineBlock.java b/src/main/java/net/minecraft/world/level/lighting/LightEngineBlock.java index f6198069e3ca421b4f551939263c7cf8bd5b754e..e8d2415033c5db3c27e10a38e1ea75e60ebd693e 100644 --- a/src/main/java/net/minecraft/world/level/lighting/LightEngineBlock.java +++ b/src/main/java/net/minecraft/world/level/lighting/LightEngineBlock.java @@ -23,9 +23,11 @@ public final class LightEngineBlock extends LightEngineLayer> 38); + int k = (int) ((i << 52) >> 52); + int l = (int) ((i << 26) >> 38); + // Paper end IBlockAccess iblockaccess = this.a.c(j >> 4, l >> 4); return iblockaccess != null ? iblockaccess.g(this.f.d(j, k, l)) : 0; @@ -40,25 +42,33 @@ public final class LightEngineBlock extends LightEngineLayer= 15) { return k; } else { - int l = Integer.signum(BlockPosition.b(j) - BlockPosition.b(i)); - int i1 = Integer.signum(BlockPosition.c(j) - BlockPosition.c(i)); - int j1 = Integer.signum(BlockPosition.d(j) - BlockPosition.d(i)); + // Paper start - reuse math - credit to JellySquid for idea + int jx = (int) (j >> 38); + int jy = (int) ((j << 52) >> 52); + int jz = (int) ((j << 26) >> 38); + int ix = (int) (i >> 38); + int iy = (int) ((i << 52) >> 52); + int iz = (int) ((i << 26) >> 38); + int l = Integer.signum(jx - ix); + int i1 = Integer.signum(jy - iy); + int j1 = Integer.signum(jz - iz); + // Paper end EnumDirection enumdirection = EnumDirection.a(l, i1, j1); if (enumdirection == null) { return 15; } else { //MutableInt mutableint = new MutableInt(); // Paper - share mutableint, single threaded - IBlockData iblockdata = this.a(j, mutableint); - - if (mutableint.getValue() >= 15) { + IBlockData iblockdata = this.getBlockOptimized(jx, jy, jz, mutableint); // Paper + int blockedLight = mutableint.getValue(); // Paper + if (blockedLight >= 15) { // Paper return 15; } else { - IBlockData iblockdata1 = this.a(i, (MutableInt) null); + IBlockData iblockdata1 = this.getBlockOptimized(ix, iy, iz); // Paper VoxelShape voxelshape = this.a(iblockdata1, i, enumdirection); VoxelShape voxelshape1 = this.a(iblockdata, j, enumdirection.opposite()); - return VoxelShapes.b(voxelshape, voxelshape1) ? 15 : k + Math.max(1, mutableint.getValue()); + return VoxelShapes.b(voxelshape, voxelshape1) ? 15 : k + Math.max(1, blockedLight); // Paper } } } @@ -66,14 +76,19 @@ public final class LightEngineBlock extends LightEngineLayer> 38); + int y = (int) ((i << 52) >> 52); + int z = (int) ((i << 26) >> 38); + long k = SectionPosition.blockPosAsSectionLong(x, y, z); + // Paper end EnumDirection[] aenumdirection = LightEngineBlock.e; int l = aenumdirection.length; for (int i1 = 0; i1 < l; ++i1) { EnumDirection enumdirection = aenumdirection[i1]; - long j1 = BlockPosition.a(i, enumdirection); - long k1 = SectionPosition.e(j1); + long j1 = BlockPosition.getAdjacent(x, y, z, enumdirection); // Paper + long k1 = SectionPosition.getAdjacentFromBlockPos(x, y, z, enumdirection); // Paper if (k == k1 || ((LightEngineStorageBlock) this.c).g(k1)) { this.b(i, j1, j, flag); @@ -98,27 +113,37 @@ public final class LightEngineBlock extends LightEngineLayer> 38); + int baseY = (int) ((i << 52) >> 52); + int baseZ = (int) ((i << 26) >> 38); + long j1 = SectionPosition.blockPosAsSectionLong(baseX, baseY, baseZ); + NibbleArray nibblearray = this.c.updating.getUpdatingOptimized(j1); + // Paper end EnumDirection[] aenumdirection = LightEngineBlock.e; int k1 = aenumdirection.length; for (int l1 = 0; l1 < k1; ++l1) { EnumDirection enumdirection = aenumdirection[l1]; - long i2 = BlockPosition.a(i, enumdirection); + // Paper start + int newX = baseX + enumdirection.getAdjacentX(); + int newY = baseY + enumdirection.getAdjacentY(); + int newZ = baseZ + enumdirection.getAdjacentZ(); + long i2 = BlockPosition.asLong(newX, newY, newZ); if (i2 != j) { - long j2 = SectionPosition.e(i2); + long j2 = SectionPosition.blockPosAsSectionLong(newX, newY, newZ); + // Paper end NibbleArray nibblearray1; if (j1 == j2) { nibblearray1 = nibblearray; } else { - nibblearray1 = ((LightEngineStorageBlock) this.c).a(j2, true); + nibblearray1 = ((LightEngineStorageBlock) this.c).updating.getUpdatingOptimized(j2); // Paper } if (nibblearray1 != null) { - int k2 = this.b(i2, i, this.a(nibblearray1, i2)); + int k2 = this.b(i2, i, this.getNibbleLightInverse(nibblearray1, newX, newY, newZ)); // Paper if (l > k2) { l = k2; diff --git a/src/main/java/net/minecraft/world/level/lighting/LightEngineLayer.java b/src/main/java/net/minecraft/world/level/lighting/LightEngineLayer.java index 944a8c295ff9df0d96800ddc4f6763598cf61d0d..64dad8ed7c16011d9cb3e9d22ac6f892c638e3b2 100644 --- a/src/main/java/net/minecraft/world/level/lighting/LightEngineLayer.java +++ b/src/main/java/net/minecraft/world/level/lighting/LightEngineLayer.java @@ -10,6 +10,7 @@ import net.minecraft.world.level.EnumSkyBlock; import net.minecraft.world.level.IBlockAccess; import net.minecraft.world.level.block.Blocks; import net.minecraft.world.level.block.state.IBlockData; +import net.minecraft.world.level.chunk.IChunkAccess; import net.minecraft.world.level.chunk.ILightAccess; import net.minecraft.world.level.chunk.NibbleArray; import net.minecraft.world.phys.shapes.VoxelShape; @@ -23,10 +24,37 @@ public abstract class LightEngineLayer, S e protected final EnumSkyBlock b; protected final S c; private boolean f; - protected final BlockPosition.MutableBlockPosition d = new BlockPosition.MutableBlockPosition(); + protected final BlockPosition.MutableBlockPosition d = new BlockPosition.MutableBlockPosition(); protected final BlockPosition.MutableBlockPosition pos = d; // Paper private final long[] g = new long[2]; - private final IBlockAccess[] h = new IBlockAccess[2]; + private final IChunkAccess[] h = new IChunkAccess[2]; // Paper + // Paper start - see fully commented out method below (look for Bedrock) + // optimized method with less branching for when scenarios arent needed. + // avoid using mutable version if can + protected final IBlockData getBlockOptimized(int x, int y, int z, MutableInt mutableint) { + IChunkAccess iblockaccess = this.a(x >> 4, z >> 4); + + if (iblockaccess == null) { + mutableint.setValue(16); + return Blocks.BEDROCK.getBlockData(); + } else { + this.pos.setValues(x, y, z); + IBlockData iblockdata = iblockaccess.getType(x, y, z); + mutableint.setValue(iblockdata.b(this.a.getWorld(), this.pos)); + return iblockdata.l() && iblockdata.e() ? iblockdata : Blocks.AIR.getBlockData(); + } + } + protected final IBlockData getBlockOptimized(int x, int y, int z) { + IChunkAccess iblockaccess = this.a(x >> 4, z >> 4); + + if (iblockaccess == null) { + return Blocks.BEDROCK.getBlockData(); + } else { + IBlockData iblockdata = iblockaccess.getType(x, y, z); + return iblockdata.l() && iblockdata.e() ? iblockdata : Blocks.AIR.getBlockData(); + } + } + // Paper end public LightEngineLayer(ILightAccess ilightaccess, EnumSkyBlock enumskyblock, S s0) { super(16, 256, 8192); this.a = ilightaccess; @@ -45,7 +73,7 @@ public abstract class LightEngineLayer, S e } @Nullable - private IBlockAccess a(int i, int j) { + private IChunkAccess a(int i, int j) { // Paper long k = ChunkCoordIntPair.pair(i, j); for (int l = 0; l < 2; ++l) { @@ -54,7 +82,7 @@ public abstract class LightEngineLayer, S e } } - IBlockAccess iblockaccess = this.a.c(i, j); + IChunkAccess iblockaccess = (IChunkAccess) this.a.c(i, j); // Paper for (int i1 = 1; i1 > 0; --i1) { this.g[i1] = this.g[i1 - 1]; @@ -71,37 +99,39 @@ public abstract class LightEngineLayer, S e Arrays.fill(this.h, (Object) null); } - protected IBlockData a(long i, @Nullable MutableInt mutableint) { - if (i == Long.MAX_VALUE) { - if (mutableint != null) { - mutableint.setValue(0); - } - - return Blocks.AIR.getBlockData(); - } else { - int j = SectionPosition.a(BlockPosition.b(i)); - int k = SectionPosition.a(BlockPosition.d(i)); - IBlockAccess iblockaccess = this.a(j, k); - - if (iblockaccess == null) { - if (mutableint != null) { - mutableint.setValue(16); - } - - return Blocks.BEDROCK.getBlockData(); - } else { - this.d.g(i); - IBlockData iblockdata = iblockaccess.getType(this.d); - boolean flag = iblockdata.l() && iblockdata.e(); - - if (mutableint != null) { - mutableint.setValue(iblockdata.b(this.a.getWorld(), (BlockPosition) this.d)); - } - - return flag ? iblockdata : Blocks.AIR.getBlockData(); - } - } - } + // Paper start - comment out, see getBlockOptimized +// protected IBlockData a(long i, @Nullable MutableInt mutableint) { +// if (i == Long.MAX_VALUE) { +// if (mutableint != null) { +// mutableint.setValue(0); +// } +// +// return Blocks.AIR.getBlockData(); +// } else { +// int j = SectionPosition.a(BlockPosition.b(i)); +// int k = SectionPosition.a(BlockPosition.d(i)); +// IBlockAccess iblockaccess = this.a(j, k); +// +// if (iblockaccess == null) { +// if (mutableint != null) { +// mutableint.setValue(16); +// } +// +// return Blocks.BEDROCK.getBlockData(); +// } else { +// this.d.g(i); +// IBlockData iblockdata = iblockaccess.getType(this.d); +// boolean flag = iblockdata.l() && iblockdata.e(); +// +// if (mutableint != null) { +// mutableint.setValue(iblockdata.b(this.a.getWorld(), (BlockPosition) this.d)); +// } +// +// return flag ? iblockdata : Blocks.AIR.getBlockData(); +// } +// } +// } + // Paper end protected VoxelShape a(IBlockData iblockdata, long i, EnumDirection enumdirection) { return iblockdata.l() ? iblockdata.a(this.a.getWorld(), this.d.g(i), enumdirection) : VoxelShapes.a(); @@ -136,8 +166,9 @@ public abstract class LightEngineLayer, S e return i == Long.MAX_VALUE ? 0 : 15 - this.c.i(i); } + protected int getNibbleLightInverse(NibbleArray nibblearray, int x, int y, int z) { return 15 - nibblearray.a(x & 15, y & 15, z & 15); } // Paper - x/y/z version of below protected int a(NibbleArray nibblearray, long i) { - return 15 - nibblearray.a(SectionPosition.b(BlockPosition.b(i)), SectionPosition.b(BlockPosition.c(i)), SectionPosition.b(BlockPosition.d(i))); + return 15 - nibblearray.a((int) (i >> 38) & 15, (int) ((i << 52) >> 52) & 15, (int) ((i << 26) >> 38) & 15); // Paper } @Override diff --git a/src/main/java/net/minecraft/world/level/lighting/LightEngineSky.java b/src/main/java/net/minecraft/world/level/lighting/LightEngineSky.java index 37fa5faea6e2972e3eb8a3cbd1913ef38dc9456f..9cd2dfbfa216fdc58297fd25066d31bb92e13ec2 100644 --- a/src/main/java/net/minecraft/world/level/lighting/LightEngineSky.java +++ b/src/main/java/net/minecraft/world/level/lighting/LightEngineSky.java @@ -4,6 +4,7 @@ import net.minecraft.core.BlockPosition; import net.minecraft.core.EnumDirection; import net.minecraft.core.SectionPosition; import net.minecraft.world.level.EnumSkyBlock; +import net.minecraft.world.level.block.Blocks; import net.minecraft.world.level.block.state.IBlockData; import net.minecraft.world.level.chunk.ILightAccess; import net.minecraft.world.level.chunk.NibbleArray; @@ -38,21 +39,25 @@ public final class LightEngineSky extends LightEngineLayer= 15) { + // Paper start - use x/y/z and optimized block lookup + int jx = (int) (j >> 38); + int jy = (int) ((j << 52) >> 52); + int jz = (int) ((j << 26) >> 38); + IBlockData iblockdata = this.getBlockOptimized(jx, jy, jz, mutableint); + int blockedLight = mutableint.getValue(); + if (blockedLight >= 15) { + // Paper end return 15; } else { - int l = BlockPosition.b(i); - int i1 = BlockPosition.c(i); - int j1 = BlockPosition.d(i); - int k1 = BlockPosition.b(j); - int l1 = BlockPosition.c(j); - int i2 = BlockPosition.d(j); - boolean flag = l == k1 && j1 == i2; - int j2 = Integer.signum(k1 - l); - int k2 = Integer.signum(l1 - i1); - int l2 = Integer.signum(i2 - j1); + // Paper start - inline math + int ix = (int) (i >> 38); + int iy = (int) ((i << 52) >> 52); + int iz = (int) ((i << 26) >> 38); + boolean flag = ix == jx && iz == jz; + int j2 = Integer.signum(jx - ix); + int k2 = Integer.signum(jy - iy); + int l2 = Integer.signum(jz - iz); + // Paper end EnumDirection enumdirection; if (i == Long.MAX_VALUE) { @@ -61,7 +66,7 @@ public final class LightEngineSky extends LightEngineLayer l1; + boolean flag1 = i == Long.MAX_VALUE || flag && iy > jy; // Paper rename vars to iy > jy - return flag1 && k == 0 && mutableint.getValue() == 0 ? 0 : k + Math.max(1, mutableint.getValue()); + return flag1 && k == 0 && blockedLight == 0 ? 0 : k + Math.max(1, blockedLight); // Paper } } } @@ -101,10 +106,14 @@ public final class LightEngineSky extends LightEngineLayer> 38); + int baseY = (int) ((i << 52) >> 52); + int baseZ = (int) ((i << 26) >> 38); + long k = SectionPosition.blockPosAsSectionLong(baseX, baseY, baseZ); + int i1 = baseY & 15; + int j1 = baseY >> 4; + // Paper end int k1; if (i1 != 0) { @@ -119,15 +128,16 @@ public final class LightEngineSky extends LightEngineLayer> 38); + int baseY = (int) ((i << 52) >> 52); + int baseZ = (int) ((i << 26) >> 38); + long j1 = SectionPosition.blockPosAsSectionLong(baseX, baseY, baseZ); + NibbleArray nibblearray = this.c.updating.getUpdatingOptimized(j1); + // Paper end EnumDirection[] aenumdirection = LightEngineSky.e; int k1 = aenumdirection.length; for (int l1 = 0; l1 < k1; ++l1) { EnumDirection enumdirection = aenumdirection[l1]; - long i2 = BlockPosition.a(i, enumdirection); - long j2 = SectionPosition.e(i2); + // Paper start + int newX = baseX + enumdirection.getAdjacentX(); + int newY = baseY + enumdirection.getAdjacentY(); + int newZ = baseZ + enumdirection.getAdjacentZ(); + long i2 = BlockPosition.asLong(newX, newY, newZ); + long j2 = SectionPosition.blockPosAsSectionLong(newX, newY, newZ); + // Paper end NibbleArray nibblearray1; if (j1 == j2) { nibblearray1 = nibblearray; } else { - nibblearray1 = ((LightEngineStorageSky) this.c).a(j2, true); + nibblearray1 = ((LightEngineStorageSky) this.c).updating.getUpdatingOptimized(j2); // Paper } if (nibblearray1 != null) { if (i2 != j) { - int k2 = this.b(i2, i, this.a(nibblearray1, i2)); + int k2 = this.b(i2, i, this.getNibbleLightInverse(nibblearray1, newX, newY, newZ)); // Paper if (l > k2) { l = k2; @@ -215,7 +235,7 @@ public final class LightEngineSky extends LightEngineLayer> e protected final LongSet c = new LongOpenHashSet(); protected final LongSet d = new LongOpenHashSet(); protected volatile M e_visible; protected final Object visibleUpdateLock = new Object(); // Paper - diff on change, should be "visible" - force compile fail on usage change - protected final M f; // Paper - diff on change, should be "updating" + protected final M f; protected final M updating; // Paper - diff on change, should be "updating" protected final LongSet g = new LongOpenHashSet(); - protected final LongSet h = new LongOpenHashSet(); + protected final LongSet h = new LongOpenHashSet(); LongSet dirty = h; // Paper - OBFHELPER protected final Long2ObjectMap i = Long2ObjectMaps.synchronize(new Long2ObjectOpenHashMap()); private final LongSet n = new LongOpenHashSet(); private final LongSet o = new LongOpenHashSet(); @@ -37,33 +37,33 @@ public abstract class LightEngineStorage> e protected volatile boolean j; protected LightEngineStorage(EnumSkyBlock enumskyblock, ILightAccess ilightaccess, M m0) { - super(3, 16, 256); + super(3, 256, 256); // Paper - bump expected size of level sets to improve collisions and reduce rehashing (seen a lot of it) this.l = enumskyblock; this.m = ilightaccess; - this.f = m0; + this.f = m0; updating = m0; // Paper this.e_visible = m0.b(); // Paper - avoid copying light data this.e_visible.d(); // Paper - avoid copying light data } - protected boolean g(long i) { - return this.a(i, true) != null; + protected final boolean g(long i) { // Paper - final to help inlining + return this.updating.getUpdatingOptimized(i) != null; // Paper - inline to avoid branching } @Nullable protected NibbleArray a(long i, boolean flag) { // Paper start - avoid copying light data if (flag) { - return this.a(this.f, i); + return this.updating.getUpdatingOptimized(i); } else { synchronized (this.visibleUpdateLock) { - return this.a(this.e_visible, i); + return this.e_visible.lookup.apply(i); } } // Paper end - avoid copying light data } @Nullable - protected NibbleArray a(M m0, long i) { + protected final NibbleArray a(M m0, long i) { // Paper return m0.c(i); } @@ -77,27 +77,57 @@ public abstract class LightEngineStorage> e protected abstract int d(long i); protected int i(long i) { - long j = SectionPosition.e(i); - NibbleArray nibblearray = this.a(j, true); + // Paper start - reuse and inline math, use Optimized Updating path + final int x = (int) (i >> 38); + final int y = (int) ((i << 52) >> 52); + final int z = (int) ((i << 26) >> 38); + long j = SectionPosition.blockPosAsSectionLong(x, y, z); + NibbleArray nibblearray = this.updating.getUpdatingOptimized(j); + // BUG: Sometimes returns null and crashes, try to recover, but to prevent crash just return no light. + if (nibblearray == null) { + nibblearray = this.e_visible.lookup.apply(j); + } + if (nibblearray == null) { + System.err.println("Null nibble, preventing crash " + BlockPosition.fromLong(i)); + return 0; + } - return nibblearray.a(SectionPosition.b(BlockPosition.b(i)), SectionPosition.b(BlockPosition.c(i)), SectionPosition.b(BlockPosition.d(i))); + return nibblearray.a(x & 15, y & 15, z & 15); // Paper - inline operations + // Paper end } protected void b(long i, int j) { - long k = SectionPosition.e(i); + // Paper start - cache part of the math done in loop below + int x = (int) (i >> 38); + int y = (int) ((i << 52) >> 52); + int z = (int) ((i << 26) >> 38); + long k = SectionPosition.blockPosAsSectionLong(x, y, z); + // Paper end if (this.g.add(k)) { this.f.a(k); } NibbleArray nibblearray = this.a(k, true); - - nibblearray.a(SectionPosition.b(BlockPosition.b(i)), SectionPosition.b(BlockPosition.c(i)), SectionPosition.b(BlockPosition.d(i)), j); - - for (int l = -1; l <= 1; ++l) { - for (int i1 = -1; i1 <= 1; ++i1) { - for (int j1 = -1; j1 <= 1; ++j1) { - this.h.add(SectionPosition.e(BlockPosition.a(i, i1, j1, l))); + nibblearray.a(x & 15, y & 15, z & 15, j); // Paper - use already calculated x/y/z + + // Paper start - credit to JellySquid for a major optimization here: + /* + * An extremely important optimization is made here in regards to adding items to the pending notification set. The + * original implementation attempts to add the coordinate of every chunk which contains a neighboring block position + * even though a huge number of loop iterations will simply map to block positions within the same updating chunk. + * + * Our implementation here avoids this by pre-calculating the min/max chunk coordinates so we can iterate over only + * the relevant chunk positions once. This reduces what would always be 27 iterations to just 1-8 iterations. + * + * @reason Use faster implementation + * @author JellySquid + */ + for (int z2 = (z - 1) >> 4; z2 <= (z + 1) >> 4; ++z2) { + for (int x2 = (x - 1) >> 4; x2 <= (x + 1) >> 4; ++x2) { + for (int y2 = (y - 1) >> 4; y2 <= (y + 1) >> 4; ++y2) { + this.dirty.add(SectionPosition.asLong(x2, y2, z2)); + // Paper end } } } @@ -129,17 +159,23 @@ public abstract class LightEngineStorage> e } if (k >= 2 && j != 2) { - if (this.p.contains(i)) { - this.p.remove(i); - } else { + if (!this.p.remove(i)) { // Paper - remove useless contains - credit to JellySquid + //this.p.remove(i); // Paper + //} else { // Paper this.f.a(i, this.j(i)); this.g.add(i); this.k(i); - for (int l = -1; l <= 1; ++l) { - for (int i1 = -1; i1 <= 1; ++i1) { - for (int j1 = -1; j1 <= 1; ++j1) { - this.h.add(SectionPosition.e(BlockPosition.a(i, i1, j1, l))); + // Paper start - reuse x/y/z and only notify valid chunks - Credit to JellySquid (See above method for notes) + int x = (int) (i >> 38); + int y = (int) ((i << 52) >> 52); + int z = (int) ((i << 26) >> 38); + + for (int z2 = (z - 1) >> 4; z2 <= (z + 1) >> 4; ++z2) { + for (int x2 = (x - 1) >> 4; x2 <= (x + 1) >> 4; ++x2) { + for (int y2 = (y - 1) >> 4; y2 <= (y + 1) >> 4; ++y2) { + this.dirty.add(SectionPosition.asLong(x2, y2, z2)); + // Paper end } } } @@ -165,9 +201,9 @@ public abstract class LightEngineStorage> e return SectionPosition.e(j) == i; }); } else { - int j = SectionPosition.c(SectionPosition.b(i)); - int k = SectionPosition.c(SectionPosition.c(i)); - int l = SectionPosition.c(SectionPosition.d(i)); + int j = (int) (i >> 42) << 4; // Paper - inline + int k = (int) (i << 44 >> 44) << 4; // Paper - inline + int l = (int) (i << 22 >> 42) << 4; // Paper - inline for (int i1 = 0; i1 < 16; ++i1) { for (int j1 = 0; j1 < 16; ++j1) { @@ -194,7 +230,7 @@ public abstract class LightEngineStorage> e NibbleArray nibblearray; while (longiterator.hasNext()) { - i = (Long) longiterator.next(); + i = longiterator.nextLong(); // Paper this.a(lightenginelayer, i); NibbleArray nibblearray1 = (NibbleArray) this.i.remove(i); @@ -212,7 +248,7 @@ public abstract class LightEngineStorage> e longiterator = this.p.iterator(); while (longiterator.hasNext()) { - i = (Long) longiterator.next(); + i = longiterator.nextLong(); // Paper this.l(i); } @@ -223,12 +259,13 @@ public abstract class LightEngineStorage> e Entry entry; long j; + NibbleArray test = null; // Paper while (objectiterator.hasNext()) { entry = (Entry) objectiterator.next(); j = entry.getLongKey(); - if (this.g(j)) { + if ((test = this.updating.getUpdatingOptimized(j)) != null) { // Paper - dont look up nibble twice nibblearray = (NibbleArray) entry.getValue(); - if (this.f.c(j) != nibblearray) { + if (test != nibblearray) { // Paper this.a(lightenginelayer, j); this.f.a(j, nibblearray); this.g.add(j); @@ -241,14 +278,14 @@ public abstract class LightEngineStorage> e longiterator = this.i.keySet().iterator(); while (longiterator.hasNext()) { - i = (Long) longiterator.next(); + i = longiterator.nextLong(); // Paper this.b(lightenginelayer, i); } } else { longiterator = this.n.iterator(); while (longiterator.hasNext()) { - i = (Long) longiterator.next(); + i = longiterator.nextLong(); // Paper this.b(lightenginelayer, i); } } @@ -269,15 +306,20 @@ public abstract class LightEngineStorage> e private void b(LightEngineLayer lightenginelayer, long i) { if (this.g(i)) { - int j = SectionPosition.c(SectionPosition.b(i)); - int k = SectionPosition.c(SectionPosition.c(i)); - int l = SectionPosition.c(SectionPosition.d(i)); + // Paper start + int secX = (int) (i >> 42); + int secY = (int) (i << 44 >> 44); + int secZ = (int) (i << 22 >> 42); + int j = secX << 4; // baseX + int k = secY << 4; // baseY + int l = secZ << 4; // baseZ + // Paper end EnumDirection[] aenumdirection = LightEngineStorage.k; int i1 = aenumdirection.length; for (int j1 = 0; j1 < i1; ++j1) { EnumDirection enumdirection = aenumdirection[j1]; - long k1 = SectionPosition.a(i, enumdirection); + long k1 = SectionPosition.getAdjacentFromSectionPos(secX, secY, secZ, enumdirection); // Paper - avoid extra unpacking if (!this.i.containsKey(k1) && this.g(k1)) { for (int l1 = 0; l1 < 16; ++l1) { diff --git a/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageArray.java b/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageArray.java index da78d4c4b5f8af4648ac82d63c21f6a2a5b73ecb..2ce5cf2e5b6e1dae463439fbfde519fa54677714 100644 --- a/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageArray.java +++ b/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageArray.java @@ -7,13 +7,18 @@ import net.minecraft.world.level.chunk.NibbleArray; public abstract class LightEngineStorageArray> { - private final long[] b = new long[2]; - private final NibbleArray[] c = new NibbleArray[2]; + // private final long[] b = new long[2]; // Paper - unused + private final NibbleArray[] c = new NibbleArray[]{NibbleArray.EMPTY_NIBBLE_ARRAY, NibbleArray.EMPTY_NIBBLE_ARRAY}; private final NibbleArray[] cache = c; // Paper - OBFHELPER private boolean d; protected final com.destroystokyo.paper.util.map.QueuedChangesMapLong2Object data; // Paper - avoid copying light data protected final boolean isVisible; // Paper - avoid copying light data - java.util.function.Function lookup; // Paper - faster branchless lookup + // Paper start - faster lookups with less branching, use interface to avoid boxing instead of Function + public final NibbleArrayAccess lookup; + public interface NibbleArrayAccess { + NibbleArray apply(long id); + } + // Paper end // Paper start - avoid copying light data protected LightEngineStorageArray(com.destroystokyo.paper.util.map.QueuedChangesMapLong2Object data, boolean isVisible) { if (isVisible) { @@ -21,12 +26,14 @@ public abstract class LightEngineStorageArray 0; --k) { - this.b[k] = this.b[k - 1]; - this.c[k] = this.c[k - 1]; - } - - this.b[0] = i; - this.c[0] = nibblearray; - } - + cache[1] = cache[0]; + cache[0] = nibblearray; return nibblearray; } } + // Paper end + + @Nullable + public final NibbleArray c(final long i) { // Paper - final + // Paper start - optimize visible case or missed updating cases + if (this.d) { + // short circuit to optimized + return getUpdatingOptimized(i); + } + + return this.lookup.apply(i); + // Paper end + } @Nullable public NibbleArray d(long i) { @@ -82,13 +91,14 @@ public abstract class LightEngineStorageArray> 38); + int baseY = (int) ((i << 52) >> 52); + int baseZ = (int) ((i << 26) >> 38); + long j = (((long) (baseX >> 4) & 4194303L) << 42) | (((long) (baseY >> 4) & 1048575L)) | (((long) (baseZ >> 4) & 4194303L) << 20); + NibbleArray nibblearray = this.e_visible.lookup.apply(j); + return nibblearray == null ? 0 : nibblearray.a(baseX & 15, baseY & 15, baseZ & 15); + // Paper end } public static final class a extends LightEngineStorageArray { diff --git a/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageSky.java b/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageSky.java index 488403a6765598317faedc2d600ae82238e99e39..6d31b19c851081a37e6fcefdcdfcb7018fce6b26 100644 --- a/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageSky.java +++ b/src/main/java/net/minecraft/world/level/lighting/LightEngineStorageSky.java @@ -28,7 +28,12 @@ public class LightEngineStorageSky extends LightEngineStorage> 38); + int baseY = (int) ((i << 52) >> 52); + int baseZ = (int) ((i << 26) >> 38); + long j = SectionPosition.blockPosAsSectionLong(baseX, baseY, baseZ); + // Paper end int k = SectionPosition.c(j); synchronized (this.visibleUpdateLock) { // Paper - avoid copying light data LightEngineStorageSky.a lightenginestoragesky_a = (LightEngineStorageSky.a) this.e_visible; // Paper - avoid copying light data - must be after lock acquire @@ -49,7 +54,7 @@ public class LightEngineStorageSky extends LightEngineStorage> 52) & 15, (int) baseZ & 15); // Paper - y changed above } else { return 15; } @@ -168,7 +173,7 @@ public class LightEngineStorageSky extends LightEngineStorage> 42) << 4; // Paper + int baseY = (int) (i << 44 >> 44) << 4; // Paper + int baseZ = (int) (i << 22 >> 42) << 4; // Paper j = this.c(i); if (j != 2 && !this.n.contains(i) && this.l.add(i)) { int l; @@ -203,10 +211,10 @@ public class LightEngineStorageSky extends LightEngineStorage> 42) << 4; // Paper + int baseY = (int) (i << 44 >> 44) << 4; // Paper + int baseZ = (int) (i << 22 >> 42) << 4; // Paper if (this.l.remove(i) && this.g(i)) { for (j = 0; j < 16; ++j) { for (k = 0; k < 16; ++k) { - long l3 = BlockPosition.a(SectionPosition.c(SectionPosition.b(i)) + j, SectionPosition.c(SectionPosition.c(i)) + 16 - 1, SectionPosition.c(SectionPosition.d(i)) + k); + long l3 = BlockPosition.a(baseX + j, baseY + 16 - 1, baseZ + k); // Paper lightenginelayer.a(Long.MAX_VALUE, l3, 15, false); }