geforkt von Mirrors/Paper
0f1a8717e8
Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
167 Zeilen
8.3 KiB
Diff
167 Zeilen
8.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Thu, 3 Mar 2016 02:07:55 -0600
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Subject: [PATCH] Optimize isInWorldBounds and getBlockState for inlining
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Hot methods, so reduce # of instructions for the method.
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Move is valid location test to the BlockPosition class so that it can access local variables.
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Replace all calls to the new place to the unnecessary forward.
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Optimize getType and getBlockData to manually inline and optimize the calls
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diff --git a/src/main/java/net/minecraft/core/Vec3i.java b/src/main/java/net/minecraft/core/Vec3i.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/core/Vec3i.java
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+++ b/src/main/java/net/minecraft/core/Vec3i.java
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@@ -0,0 +0,0 @@ public class Vec3i implements Comparable<Vec3i> {
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return CODEC.flatXmap(checkOffsetAxes(maxAbsValue), checkOffsetAxes(maxAbsValue));
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}
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+ // Paper start
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+ public final boolean isInsideBuildHeightAndWorldBoundsHorizontal(net.minecraft.world.level.LevelHeightAccessor levelHeightAccessor) {
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+ return getX() >= -30000000 && getZ() >= -30000000 && getX() < 30000000 && getZ() < 30000000 && !levelHeightAccessor.isOutsideBuildHeight(getY());
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+ }
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+ // Paper end
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+
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public Vec3i(int x, int y, int z) {
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this.x = x;
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this.y = y;
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diff --git a/src/main/java/net/minecraft/world/level/Level.java b/src/main/java/net/minecraft/world/level/Level.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/world/level/Level.java
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+++ b/src/main/java/net/minecraft/world/level/Level.java
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@@ -0,0 +0,0 @@ public abstract class Level implements LevelAccessor, AutoCloseable {
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}
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public boolean isInWorldBounds(BlockPos pos) {
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- return !this.isOutsideBuildHeight(pos) && Level.isInWorldBoundsHorizontal(pos);
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+ return pos.isInsideBuildHeightAndWorldBoundsHorizontal(this); // Paper - use better/optimized check
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}
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public static boolean isInSpawnableBounds(BlockPos pos) {
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diff --git a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/ChunkAccess.java
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@@ -0,0 +0,0 @@ public abstract class ChunkAccess implements BlockGetter, BiomeManager.NoiseBiom
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return GameEventDispatcher.NOOP;
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}
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+ public abstract BlockState getBlockState(final int x, final int y, final int z); // Paper
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@Nullable
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public abstract BlockState setBlockState(BlockPos pos, BlockState state, boolean moved);
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diff --git a/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/EmptyLevelChunk.java
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@@ -0,0 +0,0 @@ public class EmptyLevelChunk extends LevelChunk {
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public void setBlockEmptinessMap(final boolean[] emptinessMap) {}
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// Paper end - starlight
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+ // Paper start
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+ @Override
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+ public BlockState getBlockState(int x, int y, int z) {
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+ return Blocks.VOID_AIR.defaultBlockState();
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+ }
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+ // Paper end
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@Override
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public BlockState getBlockState(BlockPos pos) {
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return Blocks.VOID_AIR.defaultBlockState();
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diff --git a/src/main/java/net/minecraft/world/level/chunk/ImposterProtoChunk.java b/src/main/java/net/minecraft/world/level/chunk/ImposterProtoChunk.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/ImposterProtoChunk.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/ImposterProtoChunk.java
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@@ -0,0 +0,0 @@ public class ImposterProtoChunk extends ProtoChunk {
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public BlockState getBlockState(BlockPos pos) {
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return this.wrapped.getBlockState(pos);
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}
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+ // Paper start
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+ @Override
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+ public final BlockState getBlockState(final int x, final int y, final int z) {
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+ return this.wrapped.getBlockStateFinal(x, y, z);
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+ }
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+ // Paper end
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@Override
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public FluidState getFluidState(BlockPos pos) {
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diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunk.java
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@@ -0,0 +0,0 @@ public class LevelChunk extends ChunkAccess {
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}
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}
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+ // Paper start - Optimize getBlockData to reduce instructions
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@Override
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public BlockState getBlockState(BlockPos pos) {
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- int i = pos.getX();
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- int j = pos.getY();
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- int k = pos.getZ();
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+ return this.getBlockStateFinal(pos.getX(), pos.getY(), pos.getZ());
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+ }
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+
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+ @Override
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+ public BlockState getBlockState(final int x, final int y, final int z) {
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+ return this.getBlockStateFinal(x, y, z);
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+ }
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+ public final BlockState getBlockStateFinal(final int x, final int y, final int z) {
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+ // Method body / logic copied from below
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+ final int i = this.getSectionIndex(y);
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+ if (i < 0 || i >= this.sections.length || this.sections[i].nonEmptyBlockCount == 0 || this.sections[i].hasOnlyAir()) {
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+ return Blocks.AIR.defaultBlockState();
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+ }
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+ // Inlined ChunkSection.getType() and DataPaletteBlock.a(int,int,int)
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+ return this.sections[i].states.get((y & 15) << 8 | (z & 15) << 4 | x & 15);
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+ }
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+
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+ public BlockState getBlockState_unused(int i, int j, int k) {
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+ // Paper end
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if (this.level.isDebug()) {
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BlockState iblockdata = null;
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diff --git a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/LevelChunkSection.java
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@@ -0,0 +0,0 @@ public class LevelChunkSection {
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public static final int SECTION_SIZE = 4096;
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public static final int BIOME_CONTAINER_BITS = 2;
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private final int bottomBlockY;
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- private short nonEmptyBlockCount;
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+ short nonEmptyBlockCount; // Paper - package-private
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private short tickingBlockCount;
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private short tickingFluidCount;
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public final PalettedContainer<BlockState> states;
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diff --git a/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java b/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
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index 0000000000000000000000000000000000000000..0000000000000000000000000000000000000000 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/ProtoChunk.java
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@@ -0,0 +0,0 @@ public class ProtoChunk extends ChunkAccess {
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@Override
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public BlockState getBlockState(BlockPos pos) {
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- int i = pos.getY();
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- if (this.isOutsideBuildHeight(i)) {
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+ // Paper start
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+ return getBlockState(pos.getX(), pos.getY(), pos.getZ());
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+ }
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+ public BlockState getBlockState(final int x, final int y, final int z) {
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+ if (this.isOutsideBuildHeight(y)) {
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return Blocks.VOID_AIR.defaultBlockState();
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} else {
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- LevelChunkSection levelChunkSection = this.getSection(this.getSectionIndex(i));
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- return levelChunkSection.hasOnlyAir() ? Blocks.AIR.defaultBlockState() : levelChunkSection.getBlockState(pos.getX() & 15, i & 15, pos.getZ() & 15);
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+ LevelChunkSection levelChunkSection = this.getSections()[this.getSectionIndex(y)];
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+ return levelChunkSection.hasOnlyAir() ? Blocks.AIR.defaultBlockState() : levelChunkSection.getBlockState(x & 15, y & 15, z & 15);
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}
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}
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+ // Paper end
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@Override
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public FluidState getFluidState(BlockPos pos) {
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