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/ChunkProviderServer.java b/src/main/java/net/minecraft/server/ChunkProviderServer.java index 7c87ef638d538093e944341525a1027be5d15a0e..3a5a9aba111fed8b68818b95332b723ee2bce2ac 100644 --- a/src/main/java/net/minecraft/server/ChunkProviderServer.java +++ b/src/main/java/net/minecraft/server/ChunkProviderServer.java @@ -1045,7 +1045,7 @@ 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/LightEngineBlock.java b/src/main/java/net/minecraft/server/LightEngineBlock.java index 07fadc21ee12138b52cc77c50da536fec5b032f5..a61d0a27e9525505eedaec8cde44216e807eb9a8 100644 --- a/src/main/java/net/minecraft/server/LightEngineBlock.java +++ b/src/main/java/net/minecraft/server/LightEngineBlock.java @@ -13,9 +13,11 @@ 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.h(this.f.d(j, k, l)) : 0; @@ -30,25 +32,33 @@ 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 } } } @@ -56,14 +66,19 @@ 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); @@ -88,27 +103,37 @@ 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/server/LightEngineGraphSection.java b/src/main/java/net/minecraft/server/LightEngineGraphSection.java index 2eb37fb5796d423a70fa7321899a19b6625bbecc..13d067f48647dea63ef1bf3a2a3e0868074ba75f 100644 --- a/src/main/java/net/minecraft/server/LightEngineGraphSection.java +++ b/src/main/java/net/minecraft/server/LightEngineGraphSection.java @@ -13,14 +13,20 @@ 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 } } } @@ -31,10 +37,15 @@ 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/LightEngineLayer.java b/src/main/java/net/minecraft/server/LightEngineLayer.java index 3e9731bcdd4c6370c11ffc93f9fafcaf60fe932b..b5d5dd1075fd6aabbfbbd60f219b76593fc54a76 100644 --- a/src/main/java/net/minecraft/server/LightEngineLayer.java +++ b/src/main/java/net/minecraft/server/LightEngineLayer.java @@ -11,10 +11,37 @@ 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; @@ -33,7 +60,7 @@ 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) { @@ -42,7 +69,7 @@ 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]; @@ -59,37 +86,39 @@ 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(); @@ -124,8 +153,9 @@ 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/server/LightEngineSky.java b/src/main/java/net/minecraft/server/LightEngineSky.java index f0b57784006752e031800a12a1a3c1a5945c636b..32b52ca2462fa206b1184025cb3837d6c326db2d 100644 --- a/src/main/java/net/minecraft/server/LightEngineSky.java +++ b/src/main/java/net/minecraft/server/LightEngineSky.java @@ -29,21 +29,25 @@ 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) { @@ -52,7 +56,7 @@ 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 } } } @@ -92,10 +96,14 @@ 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) { @@ -110,15 +118,16 @@ 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; @@ -206,7 +225,7 @@ 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(); @@ -30,33 +30,33 @@ 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); } @@ -70,27 +70,57 @@ 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 } } } @@ -122,17 +152,23 @@ 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 } } } @@ -158,9 +194,9 @@ 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) { @@ -187,7 +223,7 @@ 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); @@ -205,7 +241,7 @@ public abstract class LightEngineStorage> e longiterator = this.p.iterator(); while (longiterator.hasNext()) { - i = (Long) longiterator.next(); + i = longiterator.nextLong(); // Paper this.l(i); } @@ -216,12 +252,13 @@ 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); @@ -234,14 +271,14 @@ 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); } } @@ -262,15 +299,20 @@ 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/server/LightEngineStorageArray.java b/src/main/java/net/minecraft/server/LightEngineStorageArray.java index 37c44a89f28c44915fcae5a7e2c4797b1c123723..549c2551c2b59730bf53a80f8706d388d96ad932 100644 --- a/src/main/java/net/minecraft/server/LightEngineStorageArray.java +++ b/src/main/java/net/minecraft/server/LightEngineStorageArray.java @@ -5,13 +5,18 @@ import javax.annotation.Nullable; 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) { @@ -19,12 +24,14 @@ 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) { @@ -80,13 +89,14 @@ 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/server/LightEngineStorageSky.java b/src/main/java/net/minecraft/server/LightEngineStorageSky.java index a35e7b392c74fadf2760d1fc2021e98d33858cb5..944094e8e770cc8c0205ef2aa6c48fff55d74639 100644 --- a/src/main/java/net/minecraft/server/LightEngineStorageSky.java +++ b/src/main/java/net/minecraft/server/LightEngineStorageSky.java @@ -22,7 +22,12 @@ 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 @@ -43,7 +48,7 @@ public class LightEngineStorageSky extends LightEngineStorage> 52) & 15, (int) baseZ & 15); // Paper - y changed above } else { return 15; } @@ -162,7 +167,7 @@ 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; @@ -197,10 +205,10 @@ 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); } diff --git a/src/main/java/net/minecraft/server/LightEngineThreaded.java b/src/main/java/net/minecraft/server/LightEngineThreaded.java index a9dc8466278f9ec2becbcb643e6e1c973df72b82..97c41fa1306798dad08ad9797c61f13d0dff6f52 100644 --- a/src/main/java/net/minecraft/server/LightEngineThreaded.java +++ b/src/main/java/net/minecraft/server/LightEngineThreaded.java @@ -15,15 +15,119 @@ 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 final java.util.concurrent.ConcurrentLinkedQueue priorityChanges = new java.util.concurrent.ConcurrentLinkedQueue<>(); + + public void changePriority(long pair, int currentPriority, int priority) { + this.priorityChanges.add(() -> { + ChunkLightQueue remove = this.queue.buckets[currentPriority].remove(pair); + if (remove != null) { + ChunkLightQueue existing = this.queue.buckets[priority].put(pair, remove); + if (existing != null) { + remove.pre.addAll(existing.pre); + remove.post.addAll(existing.post); + } + } + }); + } + + private boolean isChunkLightStatus(long pair) { + PlayerChunk playerChunk = playerChunkMap.getUpdatingChunk(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) {} + } + + + // Retain the chunks priority level for queued light tasks + private class LightQueue { + private int size = 0; + private int lowestPriority = MAX_PRIORITIES; + private final it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap[] buckets = new it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap[MAX_PRIORITIES]; + + private LightQueue() { + for (int i = 0; i < buckets.length; i++) { + buckets[i] = new it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap<>(); + } + } + + public final void add(long chunkId, int priority, LightEngineThreaded.Update type, Runnable run) { + add(chunkId, priority, type, run, false); + } + public final void add(long chunkId, int priority, LightEngineThreaded.Update type, Runnable run, boolean shouldFastUpdate) { + ChunkLightQueue lightQueue = this.buckets[priority].computeIfAbsent(chunkId, ChunkLightQueue::new); + this.size++; + if (type == Update.PRE_UPDATE) { + lightQueue.pre.add(run); + } else { + lightQueue.post.add(run); + } + if (shouldFastUpdate) { + lightQueue.shouldFastUpdate = true; + } + + if (this.lowestPriority > priority) { + this.lowestPriority = priority; + } + } + + public final boolean isEmpty() { + return this.size == 0; + } + + public final int size() { + return this.size; + } + + public boolean poll(java.util.List pre, java.util.List post) { + Runnable run; + while ((run = priorityChanges.poll()) != null) { + run.run(); + } + boolean hasWork = false; + it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap[] buckets = this.buckets; + while (lowestPriority < MAX_PRIORITIES && !isEmpty()) { + it.unimi.dsi.fastutil.longs.Long2ObjectLinkedOpenHashMap bucket = buckets[lowestPriority]; + if (bucket.isEmpty()) { + lowestPriority++; + 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; + } + } + + private 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; } @@ -111,10 +215,10 @@ 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(); - } + // Paper start + int priority = intsupplier.getAsInt(); + this.queue.add(ChunkCoordIntPair.pair(i, j), priority, lightenginethreaded_update, runnable); + // Paper end }, ChunkCoordIntPair.pair(i, j), intsupplier)); } @@ -133,8 +237,27 @@ 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); + this.e.a(ChunkTaskQueueSorter.a(() -> { + // Chunk's no longer needed + if (!isChunkLightStatus(pair)) { + this.d.c(chunkcoordintpair); // copied from end of method to release light ticket + future.complete(ichunkaccess); + return; + } + boolean[] skippedPre = {false}; + this.queue.add(pair, prioritySupplier.getAsInt(), LightEngineThreaded.Update.PRE_UPDATE, SystemUtils.a(() -> { + if (!isChunkLightStatus(pair)) { + this.d.c(chunkcoordintpair); // copied from end of method to release light ticket + future.complete(ichunkaccess); + skippedPre[0] = true; + return; + } + // Paper end ChunkSection[] achunksection = ichunkaccess.getSections(); for (int i = 0; i < 16; ++i) { @@ -152,55 +275,55 @@ public class LightEngineThreaded extends LightEngine implements AutoCloseable { }); } - this.d.c(chunkcoordintpair); + this.d.c(chunkcoordintpair); // Paper - if change, copy into !isChunkLightStatus above }, () -> { return "lightChunk " + chunkcoordintpair + " " + flag; + // Paper start - merge the 2 together })); - return CompletableFuture.supplyAsync(() -> { + + this.queue.add(pair, prioritySupplier.getAsInt(), LightEngineThreaded.Update.POST_UPDATE, () -> { + 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); }); + queueUpdate(); // run queue now + }, pair, prioritySupplier)); + 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(); - } + int i = Math.min(queue.size(), 4); + boolean ran = false; + while (i-- > 0 && queue.poll(pre, post)) { + pre.forEach(Runnable::run); + pre.clear(); + super.a(Integer.MAX_VALUE, true, true); + post.forEach(Runnable::run); + post.clear(); + ran = 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(); + if (!ran) { + // might have level updates to go still + super.a(Integer.MAX_VALUE, true, true); } - + // Paper end } public void a(int i) { diff --git a/src/main/java/net/minecraft/server/NibbleArray.java b/src/main/java/net/minecraft/server/NibbleArray.java index 8cedfdd820cc02a76607b53e0b054fc74654f907..a9795394c9b17f9f0ce4c4f9c8f51a48e950418e 100644 --- a/src/main/java/net/minecraft/server/NibbleArray.java +++ b/src/main/java/net/minecraft/server/NibbleArray.java @@ -8,6 +8,13 @@ import javax.annotation.Nullable; public class NibbleArray { // Paper start + static final NibbleArray EMPTY_NIBBLE_ARRAY = new NibbleArray() { + @Override + public byte[] asBytes() { + throw new IllegalStateException(); + } + }; + 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/server/PlayerChunk.java b/src/main/java/net/minecraft/server/PlayerChunk.java index 446c401b3139f8c6c0e70d883340f0140d94b752..a3bce8f13bf278af2d6870891daa9bf692b4e267 100644 --- a/src/main/java/net/minecraft/server/PlayerChunk.java +++ b/src/main/java/net/minecraft/server/PlayerChunk.java @@ -716,6 +716,7 @@ public class PlayerChunk { ioPriority = com.destroystokyo.paper.io.PrioritizedTaskQueue.HIGH_PRIORITY; } chunkMap.world.asyncChunkTaskManager.raisePriority(location.x, location.z, ioPriority); + chunkMap.world.getChunkProvider().getLightEngine().changePriority(location.pair(), getCurrentPriority(), priority); } if (getCurrentPriority() != priority) { this.v.a(this.location, this::getCurrentPriority, priority, this::setPriority); // use preferred priority diff --git a/src/main/java/net/minecraft/server/PlayerChunkMap.java b/src/main/java/net/minecraft/server/PlayerChunkMap.java index fea219dcfd5a98fc0e48fd70dc7d0fd41b2fc970..ad8a00e0fb5da5df1eb3afbf9ea50acfc89a5ff1 100644 --- a/src/main/java/net/minecraft/server/PlayerChunkMap.java +++ b/src/main/java/net/minecraft/server/PlayerChunkMap.java @@ -653,6 +653,7 @@ 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); diff --git a/src/main/java/net/minecraft/server/ThreadedMailbox.java b/src/main/java/net/minecraft/server/ThreadedMailbox.java index 35f4d2d9591e625ab0bbeab7b606761e74965eec..698d82dd736529a8cbfad5c6bed70ab97f0064bb 100644 --- a/src/main/java/net/minecraft/server/ThreadedMailbox.java +++ b/src/main/java/net/minecraft/server/ThreadedMailbox.java @@ -109,7 +109,8 @@ public class ThreadedMailbox implements Mailbox, AutoCloseable, Runnable { } - @Override + + public 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/server/WorldServer.java b/src/main/java/net/minecraft/server/WorldServer.java index a54e3ed06a7a1757d3c4ce96b21bed0177e1fa86..63c119072968586fab05ce3990f7c83373736f33 100644 --- a/src/main/java/net/minecraft/server/WorldServer.java +++ b/src/main/java/net/minecraft/server/WorldServer.java @@ -709,6 +709,7 @@ public class WorldServer extends World implements GeneratorAccessSeed { } gameprofilerfiller.exit(); timings.chunkTicksBlocks.stopTiming(); // Paper + getChunkProvider().getLightEngine().queueUpdate(); // Paper // Paper end } }