431 Zeilen
20 KiB
Diff
431 Zeilen
20 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 32446e874fdad36f9f80d22481a4d990967f38e3..8f135c8a4c4fe7cc1b1b8ae8db6f740227b5df50 100644
|
|
--- a/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
+++ b/src/main/java/net/minecraft/server/level/ServerLevel.java
|
|
@@ -645,6 +645,10 @@ 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();
|
|
@@ -654,10 +658,10 @@ 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.spigotConfig.thunderChance > 0 && this.random.nextInt(this.spigotConfig.thunderChance) == 0) { // Spigot // 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
|
|
@@ -681,64 +685,75 @@ 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();
|
|
+ // 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 = (Biome) this.getBiome(blockposition).value();
|
|
|
|
- if (biomebase.shouldFreeze(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
|
|
}
|
|
+ blockposition.setY(downY); // Paper
|
|
|
|
- BlockState iblockdata = this.getBlockState(blockposition1);
|
|
+ BlockState iblockdata = this.getBlockState(blockposition); // Paper
|
|
Biome.Precipitation biomebase_precipitation = biomebase.getPrecipitation();
|
|
|
|
- if (biomebase_precipitation == Biome.Precipitation.RAIN && biomebase.coldEnoughToSnow(blockposition1)) {
|
|
+ if (biomebase_precipitation == Biome.Precipitation.RAIN && biomebase.coldEnoughToSnow(blockposition)) { // Paper
|
|
biomebase_precipitation = Biome.Precipitation.SNOW;
|
|
}
|
|
|
|
- iblockdata.getBlock().handlePrecipitation(iblockdata, this, blockposition1, biomebase_precipitation);
|
|
+ iblockdata.getBlock().handlePrecipitation(iblockdata, 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.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 62251727788d48a461ea6f7945771d7d6bdc7282..106610ccc74b70b557b01c61262d56c4f1147acf 100644
|
|
--- a/src/main/java/net/minecraft/util/BitStorage.java
|
|
+++ b/src/main/java/net/minecraft/util/BitStorage.java
|
|
@@ -20,4 +20,15 @@ public interface BitStorage {
|
|
void unpack(int[] is);
|
|
|
|
BitStorage copy();
|
|
+
|
|
+ // Paper start
|
|
+ void forEach(DataBitConsumer consumer);
|
|
+
|
|
+ @FunctionalInterface
|
|
+ interface DataBitConsumer {
|
|
+
|
|
+ void accept(int location, int data);
|
|
+
|
|
+ }
|
|
+ // Paper end
|
|
}
|
|
diff --git a/src/main/java/net/minecraft/util/SimpleBitStorage.java b/src/main/java/net/minecraft/util/SimpleBitStorage.java
|
|
index 6426d6c2c31ead49444fe56e2230266290fa79dd..881a2318aac72526e0451688af58c620e4f525d1 100644
|
|
--- a/src/main/java/net/minecraft/util/SimpleBitStorage.java
|
|
+++ b/src/main/java/net/minecraft/util/SimpleBitStorage.java
|
|
@@ -124,6 +124,28 @@ public class SimpleBitStorage implements BitStorage {
|
|
return this.bits;
|
|
}
|
|
|
|
+ // Paper start
|
|
+ @Override
|
|
+ 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;
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
+
|
|
@Override
|
|
public void getAll(IntConsumer action) {
|
|
int i = 0;
|
|
diff --git a/src/main/java/net/minecraft/util/ZeroBitStorage.java b/src/main/java/net/minecraft/util/ZeroBitStorage.java
|
|
index 9686ce7536c9924b1b2aced4f013f46759cbc72e..5d8e9bdf5538b19681f21949368d862fab8a89ad 100644
|
|
--- a/src/main/java/net/minecraft/util/ZeroBitStorage.java
|
|
+++ b/src/main/java/net/minecraft/util/ZeroBitStorage.java
|
|
@@ -46,6 +46,15 @@ public class ZeroBitStorage implements BitStorage {
|
|
return 0;
|
|
}
|
|
|
|
+ // Paper start
|
|
+ @Override
|
|
+ public void forEach(DataBitConsumer consumer) {
|
|
+ for(int i = 0; i < this.size; ++i) {
|
|
+ consumer.accept(i, 0);
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
+
|
|
@Override
|
|
public void getAll(IntConsumer action) {
|
|
for(int i = 0; i < this.size; ++i) {
|
|
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 1b0be28ebfd7ec2f978b5d87f6d26e4d5913fb06..ac17fd4454730db831cf9b781963062db8614bb7 100644
|
|
--- a/src/main/java/net/minecraft/world/entity/animal/Turtle.java
|
|
+++ b/src/main/java/net/minecraft/world/entity/animal/Turtle.java
|
|
@@ -85,7 +85,7 @@ 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 843c36a8272ea5affe0a4f3baa9e15823ad74059..67cb2f94f1f2f2b8ae82d65e19b7f173157076b9 100644
|
|
--- a/src/main/java/net/minecraft/world/level/Level.java
|
|
+++ b/src/main/java/net/minecraft/world/level/Level.java
|
|
@@ -1318,10 +1318,18 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
|
|
public abstract RecipeManager getRecipeManager();
|
|
|
|
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 cdd17e501c678a4f4bebbaaccdaec1682351e2f2..6afad987f6dd1fd7243dfa6c50549c2a88768962 100644
|
|
--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
|
|
+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
|
|
@@ -26,6 +26,7 @@ public class LevelChunkSection {
|
|
private short tickingFluidCount;
|
|
public final PalettedContainer<BlockState> states;
|
|
private final PalettedContainer<Holder<Biome>> biomes;
|
|
+ public final com.destroystokyo.paper.util.maplist.IBlockDataList tickingList = new com.destroystokyo.paper.util.maplist.IBlockDataList(); // Paper
|
|
|
|
public LevelChunkSection(int chunkPos, PalettedContainer<BlockState> blockStateContainer, PalettedContainer<Holder<Biome>> biomeContainer) {
|
|
this.bottomBlockY = LevelChunkSection.getBottomBlockY(chunkPos);
|
|
@@ -83,6 +84,9 @@ public class LevelChunkSection {
|
|
--this.nonEmptyBlockCount;
|
|
if (iblockdata1.isRandomlyTicking()) {
|
|
--this.tickingBlockCount;
|
|
+ // Paper start
|
|
+ this.tickingList.remove(x, y, z);
|
|
+ // Paper end
|
|
}
|
|
}
|
|
|
|
@@ -94,6 +98,9 @@ public class LevelChunkSection {
|
|
++this.nonEmptyBlockCount;
|
|
if (state.isRandomlyTicking()) {
|
|
++this.tickingBlockCount;
|
|
+ // Paper start
|
|
+ this.tickingList.add(x, y, z, state);
|
|
+ // Paper end
|
|
}
|
|
}
|
|
|
|
@@ -125,40 +132,31 @@ public class LevelChunkSection {
|
|
}
|
|
|
|
public void recalcBlockCounts() {
|
|
- class a implements PalettedContainer.CountConsumer<BlockState> {
|
|
-
|
|
- public int nonEmptyBlockCount;
|
|
- public int tickingBlockCount;
|
|
- public int tickingFluidCount;
|
|
-
|
|
- a() {}
|
|
-
|
|
- public void accept(BlockState iblockdata, int i) {
|
|
- FluidState fluid = iblockdata.getFluidState();
|
|
-
|
|
- if (!iblockdata.isAir()) {
|
|
- this.nonEmptyBlockCount += i;
|
|
- if (iblockdata.isRandomlyTicking()) {
|
|
- this.tickingBlockCount += i;
|
|
- }
|
|
+ // Paper start - unfuck this
|
|
+ this.tickingList.clear();
|
|
+ this.nonEmptyBlockCount = 0;
|
|
+ this.tickingBlockCount = 0;
|
|
+ this.tickingFluidCount = 0;
|
|
+ this.states.forEachLocation((BlockState iblockdata, int i) -> {
|
|
+ FluidState fluid = iblockdata.getFluidState();
|
|
+
|
|
+ if (!iblockdata.isAir()) {
|
|
+ this.nonEmptyBlockCount = (short) (this.nonEmptyBlockCount + 1);
|
|
+ if (iblockdata.isRandomlyTicking()) {
|
|
+ this.tickingBlockCount = (short)(this.tickingBlockCount + 1);
|
|
+ this.tickingList.add(i, iblockdata);
|
|
}
|
|
+ }
|
|
|
|
- if (!fluid.isEmpty()) {
|
|
- this.nonEmptyBlockCount += i;
|
|
- if (fluid.isRandomlyTicking()) {
|
|
- this.tickingFluidCount += i;
|
|
- }
|
|
+ if (!fluid.isEmpty()) {
|
|
+ this.nonEmptyBlockCount = (short) (this.nonEmptyBlockCount + 1);
|
|
+ if (fluid.isRandomlyTicking()) {
|
|
+ this.tickingFluidCount = (short) (this.tickingFluidCount + 1);
|
|
}
|
|
-
|
|
}
|
|
- }
|
|
|
|
- a a0 = new a();
|
|
-
|
|
- this.states.count(a0);
|
|
- this.nonEmptyBlockCount = (short) a0.nonEmptyBlockCount;
|
|
- this.tickingBlockCount = (short) a0.tickingBlockCount;
|
|
- this.tickingFluidCount = (short) a0.tickingFluidCount;
|
|
+ });
|
|
+ // Paper end
|
|
}
|
|
|
|
public PalettedContainer<BlockState> getStates() {
|
|
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 d886320211c7fa80960042c9b9ef4951eb34aaf1..73d0a52e0b9bcd81caf5c8a91c3d8052ad6d1da8 100644
|
|
--- a/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
|
|
+++ b/src/main/java/net/minecraft/world/level/chunk/PalettedContainer.java
|
|
@@ -354,6 +354,14 @@ public class PalettedContainer<T> implements PaletteResize<T> {
|
|
}
|
|
}
|
|
|
|
+ // Paper start
|
|
+ public void forEachLocation(PalettedContainer.CountConsumer<T> consumer) {
|
|
+ this.data.storage.forEach((int location, int data) -> {
|
|
+ consumer.accept(this.data.palette.valueFor(data), location);
|
|
+ });
|
|
+ }
|
|
+ // Paper end
|
|
+
|
|
@FunctionalInterface
|
|
public interface CountConsumer<T> {
|
|
void accept(T object, int count);
|