mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-11 09:23:42 +01:00
369 lines
18 KiB
Diff
369 lines
18 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Spottedleaf <Spottedleaf@users.noreply.github.com>
|
|
Date: Sun, 20 Jun 2021 16:19:26 -0700
|
|
Subject: [PATCH] Optimise random block ticking
|
|
|
|
Massive performance improvement for random block ticking.
|
|
The performance increase comes from the fact that the vast
|
|
majority of attempted block ticks (~95% in my testing) fail
|
|
because the randomly selected block is not tickable.
|
|
|
|
Now only tickable blocks are targeted, however this means that
|
|
the maximum number of block ticks occurs per chunk. However,
|
|
not all chunks are going to be targeted. The percent chance
|
|
of a chunk being targeted is based on how many tickable blocks
|
|
are in the chunk.
|
|
This means that while block ticks are spread out less, the
|
|
total number of blocks ticked per world tick remains the same.
|
|
Therefore, the chance of a random tickable block being ticked
|
|
remains the same.
|
|
|
|
diff --git a/src/main/java/io/papermc/paper/util/math/ThreadUnsafeRandom.java b/src/main/java/io/papermc/paper/util/math/ThreadUnsafeRandom.java
|
|
new file mode 100644
|
|
index 0000000000000000000000000000000000000000..e8b4053babe46999980b92643125405064af1c04
|
|
--- /dev/null
|
|
+++ b/src/main/java/io/papermc/paper/util/math/ThreadUnsafeRandom.java
|
|
@@ -0,0 +1,46 @@
|
|
+package io.papermc.paper.util.math;
|
|
+
|
|
+import java.util.Random;
|
|
+
|
|
+public final class ThreadUnsafeRandom extends Random {
|
|
+
|
|
+ // See javadoc and internal comments for java.util.Random where these values come from, how they are used, and the author for them.
|
|
+ private static final long multiplier = 0x5DEECE66DL;
|
|
+ private static final long addend = 0xBL;
|
|
+ private static final long mask = (1L << 48) - 1;
|
|
+
|
|
+ private static long initialScramble(long seed) {
|
|
+ return (seed ^ multiplier) & mask;
|
|
+ }
|
|
+
|
|
+ private long seed;
|
|
+
|
|
+ @Override
|
|
+ public void setSeed(long seed) {
|
|
+ // note: called by Random constructor
|
|
+ this.seed = initialScramble(seed);
|
|
+ }
|
|
+
|
|
+ @Override
|
|
+ protected int next(int bits) {
|
|
+ // avoid the expensive CAS logic used by superclass
|
|
+ return (int) (((this.seed = this.seed * multiplier + addend) & mask) >>> (48 - bits));
|
|
+ }
|
|
+
|
|
+ // Taken from
|
|
+ // https://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction/
|
|
+ // https://github.com/lemire/Code-used-on-Daniel-Lemire-s-blog/blob/master/2016/06/25/fastrange.c
|
|
+ // Original license is public domain
|
|
+ public static int fastRandomBounded(final long randomInteger, final long limit) {
|
|
+ // randomInteger must be [0, pow(2, 32))
|
|
+ // limit must be [0, pow(2, 32))
|
|
+ return (int)((randomInteger * limit) >>> 32);
|
|
+ }
|
|
+
|
|
+ @Override
|
|
+ public int nextInt(int bound) {
|
|
+ // yes this breaks random's spec
|
|
+ // however there's nothing that uses this class that relies on it
|
|
+ return fastRandomBounded(this.next(32) & 0xFFFFFFFFL, bound);
|
|
+ }
|
|
+}
|
|
diff --git a/src/main/java/net/minecraft/server/level/ServerLevel.java b/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
index a999fece43b1b3f687061b541a975d889886db60..f512d68cbeb243fbef8fad73472ea6587112f889 100644
|
|
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
@@ -743,6 +743,10 @@ public class ServerLevel extends Level implements WorldGenLevel {
|
|
entityplayer.stopSleepInBed(false, false);
|
|
});
|
|
}
|
|
+ // Paper start - optimise random block ticking
|
|
+ private final BlockPos.MutableBlockPos chunkTickMutablePosition = new BlockPos.MutableBlockPos();
|
|
+ private final io.papermc.paper.util.math.ThreadUnsafeRandom randomTickRandom = new io.papermc.paper.util.math.ThreadUnsafeRandom();
|
|
+ // Paper end
|
|
|
|
public void tickChunk(LevelChunk chunk, int randomTickSpeed) {
|
|
ChunkPos chunkcoordintpair = chunk.getPos();
|
|
@@ -752,10 +756,10 @@ public class ServerLevel extends Level implements WorldGenLevel {
|
|
ProfilerFiller gameprofilerfiller = this.getProfiler();
|
|
|
|
gameprofilerfiller.push("thunder");
|
|
- BlockPos blockposition;
|
|
+ final BlockPos.MutableBlockPos blockposition = this.chunkTickMutablePosition; // Paper - use mutable to reduce allocation rate, final to force compile fail on change
|
|
|
|
if (!this.paperConfig.disableThunder && flag && this.isThundering() && this.random.nextInt(100000) == 0) { // Paper - Disable thunder
|
|
- blockposition = this.findLightningTargetAround(this.getBlockRandomPos(j, 0, k, 15));
|
|
+ blockposition.set(this.findLightningTargetAround(this.getBlockRandomPos(j, 0, k, 15))); // Paper
|
|
if (this.isRainingAt(blockposition)) {
|
|
DifficultyInstance difficultydamagescaler = this.getCurrentDifficultyAt(blockposition);
|
|
boolean flag1 = this.getGameRules().getBoolean(GameRules.RULE_DOMOBSPAWNING) && this.random.nextDouble() < (double) difficultydamagescaler.getEffectiveDifficulty() * paperConfig.skeleHorseSpawnChance && !this.getBlockState(blockposition.below()).is(Blocks.LIGHTNING_ROD); // Paper
|
|
@@ -778,65 +782,78 @@ public class ServerLevel extends Level implements WorldGenLevel {
|
|
}
|
|
|
|
gameprofilerfiller.popPush("iceandsnow");
|
|
- if (!this.paperConfig.disableIceAndSnow && this.random.nextInt(16) == 0) { // Paper - Disable ice and snow
|
|
- blockposition = this.getHeightmapPos(Heightmap.Types.MOTION_BLOCKING, this.getBlockRandomPos(j, 0, k, 15));
|
|
- BlockPos blockposition1 = blockposition.below();
|
|
+ if (!this.paperConfig.disableIceAndSnow && this.randomTickRandom.nextInt(16) == 0) { // Paper - Disable ice and snow // Paper - optimise random ticking
|
|
+ // Paper start - optimise chunk ticking
|
|
+ this.getRandomBlockPosition(j, 0, k, 15, blockposition);
|
|
+ int normalY = chunk.getHeight(Heightmap.Types.MOTION_BLOCKING, blockposition.getX() & 15, blockposition.getZ() & 15) + 1;
|
|
+ int downY = normalY - 1;
|
|
+ blockposition.setY(normalY);
|
|
+ // Paper end
|
|
Biome biomebase = this.getBiome(blockposition);
|
|
|
|
- if (biomebase.shouldFreeze((LevelReader) this, blockposition1)) {
|
|
- org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockFormEvent(this, blockposition1, Blocks.ICE.defaultBlockState(), null); // CraftBukkit
|
|
+ // Paper start - optimise chunk ticking
|
|
+ blockposition.setY(downY);
|
|
+ if (biomebase.shouldFreeze(this, blockposition)) {
|
|
+ org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockFormEvent(this, blockposition, Blocks.ICE.defaultBlockState(), null); // CraftBukkit
|
|
+ // Paper end
|
|
}
|
|
|
|
if (flag) {
|
|
+ blockposition.setY(normalY); // Paper
|
|
if (biomebase.shouldSnow(this, blockposition)) {
|
|
org.bukkit.craftbukkit.event.CraftEventFactory.handleBlockFormEvent(this, blockposition, Blocks.SNOW.defaultBlockState(), null); // CraftBukkit
|
|
}
|
|
|
|
- BlockState iblockdata = this.getBlockState(blockposition1);
|
|
+ blockposition.setY(downY); // Paper
|
|
+ BlockState iblockdata = this.getBlockState(blockposition); // Paper
|
|
+ blockposition.setY(normalY); // Paper
|
|
Biome.Precipitation biomebase_precipitation = this.getBiome(blockposition).getPrecipitation();
|
|
|
|
- if (biomebase_precipitation == Biome.Precipitation.RAIN && biomebase.isColdEnoughToSnow(blockposition1)) {
|
|
+ blockposition.setY(downY); // Paper
|
|
+ if (biomebase_precipitation == Biome.Precipitation.RAIN && biomebase.isColdEnoughToSnow(blockposition)) { // Paper
|
|
biomebase_precipitation = Biome.Precipitation.SNOW;
|
|
}
|
|
|
|
- iblockdata.getBlock().handlePrecipitation(iblockdata, (Level) this, blockposition1, biomebase_precipitation);
|
|
+ iblockdata.getBlock().handlePrecipitation(iblockdata, (Level) this, blockposition, biomebase_precipitation); // Paper
|
|
}
|
|
}
|
|
|
|
- gameprofilerfiller.popPush("tickBlocks");
|
|
+ // Paper start - optimise random block ticking
|
|
+ gameprofilerfiller.popPush("randomTick");
|
|
timings.chunkTicksBlocks.startTiming(); // Paper
|
|
if (randomTickSpeed > 0) {
|
|
- LevelChunkSection[] achunksection = chunk.getSections();
|
|
- int l = achunksection.length;
|
|
-
|
|
- for (int i1 = 0; i1 < l; ++i1) {
|
|
- LevelChunkSection chunksection = achunksection[i1];
|
|
-
|
|
- if (chunksection != LevelChunk.EMPTY_SECTION && chunksection.isRandomlyTicking()) {
|
|
- int j1 = chunksection.bottomBlockY();
|
|
-
|
|
- for (int k1 = 0; k1 < randomTickSpeed; ++k1) {
|
|
- BlockPos blockposition2 = this.getBlockRandomPos(j, j1, k, 15);
|
|
-
|
|
- gameprofilerfiller.push("randomTick");
|
|
- BlockState iblockdata1 = chunksection.getBlockState(blockposition2.getX() - j, blockposition2.getY() - j1, blockposition2.getZ() - k);
|
|
+ LevelChunkSection[] sections = chunk.getSections();
|
|
+ int minSection = io.papermc.paper.util.WorldUtil.getMinSection(this);
|
|
+ for (int sectionIndex = 0; sectionIndex < sections.length; ++sectionIndex) {
|
|
+ LevelChunkSection section = sections[sectionIndex];
|
|
+ if (section == null || section.tickingList.size() == 0) {
|
|
+ continue;
|
|
+ }
|
|
|
|
- if (iblockdata1.isRandomlyTicking()) {
|
|
- iblockdata1.randomTick(this, blockposition2, this.random);
|
|
- }
|
|
+ int yPos = (sectionIndex + minSection) << 4;
|
|
+ for (int a = 0; a < randomTickSpeed; ++a) {
|
|
+ int tickingBlocks = section.tickingList.size();
|
|
+ int index = this.randomTickRandom.nextInt(16 * 16 * 16);
|
|
+ if (index >= tickingBlocks) {
|
|
+ continue;
|
|
+ }
|
|
|
|
- FluidState fluid = iblockdata1.getFluidState();
|
|
+ long raw = section.tickingList.getRaw(index);
|
|
+ int location = com.destroystokyo.paper.util.maplist.IBlockDataList.getLocationFromRaw(raw);
|
|
+ int randomX = location & 15;
|
|
+ int randomY = ((location >>> (4 + 4)) & 255) | yPos;
|
|
+ int randomZ = (location >>> 4) & 15;
|
|
|
|
- if (fluid.isRandomlyTicking()) {
|
|
- fluid.randomTick(this, blockposition2, this.random);
|
|
- }
|
|
+ BlockPos blockposition2 = blockposition.set(j + randomX, randomY, k + randomZ);
|
|
+ BlockState iblockdata = com.destroystokyo.paper.util.maplist.IBlockDataList.getBlockDataFromRaw(raw);
|
|
|
|
- gameprofilerfiller.pop();
|
|
- }
|
|
+ iblockdata.randomTick(this, blockposition2, this.randomTickRandom);
|
|
+ // We drop the fluid tick since LAVA is ALREADY TICKED by the above method (See LiquidBlock).
|
|
+ // TODO CHECK ON UPDATE
|
|
}
|
|
}
|
|
}
|
|
-
|
|
+ // Paper end - optimise random block ticking
|
|
timings.chunkTicksBlocks.stopTiming(); // Paper
|
|
gameprofilerfiller.pop();
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/util/BitStorage.java b/src/main/java/net/minecraft/util/BitStorage.java
|
|
index 07e1374ac3430662edd9f585e59b785e329f0820..9f9c0b56f0891e9c423d79f8ae4c3643a2b91048 100644
|
|
--- a/src/main/java/net/minecraft/util/BitStorage.java
|
|
+++ b/src/main/java/net/minecraft/util/BitStorage.java
|
|
@@ -104,4 +104,32 @@ public class BitStorage {
|
|
}
|
|
|
|
}
|
|
+
|
|
+ // Paper start
|
|
+ public final void forEach(DataBitConsumer consumer) {
|
|
+ int i = 0;
|
|
+ long[] along = this.data;
|
|
+ int j = along.length;
|
|
+
|
|
+ for (int k = 0; k < j; ++k) {
|
|
+ long l = along[k];
|
|
+
|
|
+ for (int i1 = 0; i1 < this.valuesPerLong; ++i1) {
|
|
+ consumer.accept(i, (int) (l & this.mask));
|
|
+ l >>= this.bits;
|
|
+ ++i;
|
|
+ if (i >= this.size) {
|
|
+ return;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+
|
|
+ @FunctionalInterface
|
|
+ public static interface DataBitConsumer {
|
|
+
|
|
+ void accept(int location, int data);
|
|
+
|
|
+ }
|
|
+ // Paper end
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/world/entity/animal/Turtle.java b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
|
|
index 00dbe5046c3b93e402218a6903ea2f087410388b..7d001f42c448fd328b6384d133dcc4b72aab756c 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/animal/Turtle.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
|
|
@@ -91,7 +91,7 @@ public class Turtle extends Animal {
|
|
}
|
|
|
|
public void setHomePos(BlockPos pos) {
|
|
- this.entityData.set(Turtle.HOME_POS, pos);
|
|
+ this.entityData.set(Turtle.HOME_POS, pos.immutable()); // Paper - called with mutablepos...
|
|
}
|
|
|
|
public BlockPos getHomePos() {
|
|
diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
|
|
index a6891e051b3b2863fa8ca108af418892515d7295..64d5e71a8a26116385cee195d86fce1ef1574a8c 100644
|
|
--- a/src/main/java/net/minecraft/world/level/Level.java
|
|
+++ b/src/main/java/net/minecraft/world/level/Level.java
|
|
@@ -1365,10 +1365,18 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
|
|
public abstract TagContainer getTagManager();
|
|
|
|
public BlockPos getBlockRandomPos(int x, int y, int z, int l) {
|
|
+ // Paper start - allow use of mutable pos
|
|
+ BlockPos.MutableBlockPos ret = new BlockPos.MutableBlockPos();
|
|
+ this.getRandomBlockPosition(x, y, z, l, ret);
|
|
+ return ret.immutable();
|
|
+ }
|
|
+ public final BlockPos.MutableBlockPos getRandomBlockPosition(int x, int y, int z, int l, BlockPos.MutableBlockPos out) {
|
|
+ // Paper end
|
|
this.randValue = this.randValue * 3 + 1013904223;
|
|
int i1 = this.randValue >> 2;
|
|
|
|
- return new BlockPos(x + (i1 & 15), y + (i1 >> 16 & l), z + (i1 >> 8 & 15));
|
|
+ out.set(x + (i1 & 15), y + (i1 >> 16 & l), z + (i1 >> 8 & 15)); // Paper - change to setValues call
|
|
+ return out; // Paper
|
|
}
|
|
|
|
public boolean noSave() {
|
|
diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
|
|
index c1c95ac9deb134a0cf5c7763090ac5f3cddf24cc..72e3264dc74822f746fb84fec0be400047d2d9f5 100644
|
|
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
|
|
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
|
|
@@ -19,6 +19,7 @@ public class LevelChunkSection {
|
|
private short tickingBlockCount;
|
|
private short tickingFluidCount;
|
|
public final PalettedContainer<BlockState> states; // Paper - package-private // Paper - public
|
|
+ public final com.destroystokyo.paper.util.maplist.IBlockDataList tickingList = new com.destroystokyo.paper.util.maplist.IBlockDataList(); // Paper
|
|
|
|
// Paper start - Anti-Xray - Add parameters
|
|
@Deprecated public LevelChunkSection(int yOffset) { this(yOffset, null, null, true); } // Notice for updates: Please make sure this constructor isn't used anywhere
|
|
@@ -79,6 +80,9 @@ public class LevelChunkSection {
|
|
--this.nonEmptyBlockCount;
|
|
if (blockState.isRandomlyTicking()) {
|
|
--this.tickingBlockCount;
|
|
+ // Paper start
|
|
+ this.tickingList.remove(x, y, z);
|
|
+ // Paper end
|
|
}
|
|
}
|
|
|
|
@@ -90,6 +94,9 @@ public class LevelChunkSection {
|
|
++this.nonEmptyBlockCount;
|
|
if (state.isRandomlyTicking()) {
|
|
++this.tickingBlockCount;
|
|
+ // Paper start
|
|
+ this.tickingList.add(x, y, z, state);
|
|
+ // Paper end
|
|
}
|
|
}
|
|
|
|
@@ -125,22 +132,28 @@ public class LevelChunkSection {
|
|
}
|
|
|
|
public void recalcBlockCounts() {
|
|
+ // Paper start
|
|
+ this.tickingList.clear();
|
|
+ // Paper end
|
|
this.nonEmptyBlockCount = 0;
|
|
this.tickingBlockCount = 0;
|
|
this.tickingFluidCount = 0;
|
|
- this.states.count((state, count) -> {
|
|
+ this.states.forEachLocation((state, location) -> { // Paper
|
|
FluidState fluidState = state.getFluidState();
|
|
if (!state.isAir()) {
|
|
- this.nonEmptyBlockCount = (short)(this.nonEmptyBlockCount + count);
|
|
+ this.nonEmptyBlockCount = (short)(this.nonEmptyBlockCount + 1); // Paper
|
|
if (state.isRandomlyTicking()) {
|
|
- this.tickingBlockCount = (short)(this.tickingBlockCount + count);
|
|
+ // Paper start
|
|
+ this.tickingBlockCount = (short)(this.tickingBlockCount + 1);
|
|
+ this.tickingList.add(location, state);
|
|
+ // Paper end
|
|
}
|
|
}
|
|
|
|
if (!fluidState.isEmpty()) {
|
|
- this.nonEmptyBlockCount = (short)(this.nonEmptyBlockCount + count);
|
|
+ this.nonEmptyBlockCount = (short)(this.nonEmptyBlockCount + 1); // Paper
|
|
if (fluidState.isRandomlyTicking()) {
|
|
- this.tickingFluidCount = (short)(this.tickingFluidCount + count);
|
|
+ this.tickingFluidCount = (short)(this.tickingFluidCount + 1); // Paper
|
|
}
|
|
}
|
|
|
|
diff --git a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
|
|
index 79fd7a6e8a6eb1f699d03801910d97066677311c..c9e942669458668a184aaec3bc0a5509dd6ab5f0 100644
|
|
--- a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
|
|
+++ b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
|
|
@@ -320,4 +320,12 @@ public class PalettedContainer<T> implements PaletteResize<T> {
|
|
public interface CountConsumer<T> {
|
|
void accept(T object, int count);
|
|
}
|
|
+
|
|
+ // Paper start
|
|
+ public void forEachLocation(PalettedContainer.CountConsumer<T> datapaletteblock_a) {
|
|
+ this.storage.forEach((int location, int data) -> {
|
|
+ datapaletteblock_a.accept(this.palette.valueFor(data), location);
|
|
+ });
|
|
+ }
|
|
+ // Paper end
|
|
}
|