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Mirror von https://github.com/PaperMC/Paper.git synchronisiert 2024-12-15 11:00:06 +01:00
Paper/patches/server/0997-Optimize-Voxel-Shape-Merging.patch
Jake Potrebic ac554ad46d
Updated Upstream (Bukkit/CraftBukkit) (#10691)
Updated Upstream (Bukkit/CraftBukkit)

Upstream has released updates that appear to apply and compile correctly.
This update has not been tested by PaperMC and as with ANY update, please do your own testing

Bukkit Changes:
fa99e752 PR-1007: Add ItemMeta#getAsComponentString()
94a91782 Fix copy-pasted BlockType.Typed documentation
9b34ac8c Largely restore deprecated PotionData API
51a6449b PR-1008: Deprecate ITEMS_TOOLS, removed in 1.20.5
702d15fe Fix Javadoc reference
42f6cdf4 PR-919: Add internal ItemType and BlockType, delegate Material methods to them
237bb37b SPIGOT-1166, SPIGOT-7647: Expose Damager BlockState in EntityDamageByBlockEvent
035ea146 SPIGOT-6993: Allow #setVelocity to change the speed of a fireball and add a note to #setDirection about it
8c7880fb PR-1004: Improve field rename handling and centralize conversion between bukkit and string more
87c90e93 SPIGOT-7650: Add DamageSource for EntityDeathEvent and PlayerDeathEvent

CraftBukkit Changes:
4af0f22e8 SPIGOT-7664: Item meta should prevail over block states
c2ccc46ec SPIGOT-7666: Fix access to llama and horse special slot
124ac66d7 SPIGOT-7665: Fix ThrownPotion#getEffects() implementation only bringing custom effects
66f1f439a Restore null page behaviour of signed books even though not strictly allowed by API
6118e5398 Fix regression listening to minecraft:brand custom payloads
c1a26b366 Fix unnecessary and potential not thread-safe chat visibility check
12360a7ec Remove unused imports
147b098b4 PR-1397: Add ItemMeta#getAsComponentString()
428aefe0e Largely restore deprecated PotionData API
afe5b5ee9 PR-1275: Add internal ItemType and BlockType, delegate Material methods to them
8afeafa7d SPIGOT-1166, SPIGOT-7647: Expose Damager BlockState in EntityDamageByBlockEvent
4e7d749d4 SPIGOT-6993: Allow #setVelocity to change the speed of a fireball and add a note to #setDirection about it
441880757 Support both entity_data and bucket_entity_data on axolotl/fish buckets
0e22fdd1e Fix custom direct BlockState being not correctly set in DamageSource
f2182ed47 SPIGOT-7659: TropicalFishBucketMeta should use BUCKET_ENTITY_DATA
2a6207fe1 PR-1393: Improve field rename handling and centralize conversion between bukkit and string more
c024a5039 SPIGOT-7650: Add DamageSource for EntityDeathEvent and PlayerDeathEvent
741b84480 PR-1390: Improve internal handling of damage sources
0364df4e1 SPIGOT-7657: Error when loading angry entities
2024-05-11 23:48:37 +02:00

124 Zeilen
6.1 KiB
Diff

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Aikar <aikar@aikar.co>
Date: Sun, 3 May 2020 22:35:09 -0400
Subject: [PATCH] Optimize Voxel Shape Merging
This method shows up as super hot in profiler, and also a high "self" time.
Upon analyzing, it appears most usages of this method fall down to the final
else statement of the nasty ternary.
Upon even further analyzation, it appears then the majority of those have a
consistent list 1.... One with Infinity head and Tails.
First optimization is to detect these infinite states and immediately return that
VoxelShapeMergerList so we can avoid testing the rest for most cases.
Break the method into 2 to help the JVM promote inlining of this fast path.
Then it was also noticed that VoxelShapeMergerList constructor is also a hotspot
with a high self time...
Well, knowing that in most cases our list 1 is actualy the same value, it allows
us to know that with an infinite list1, the result on the merger is essentially
list2 as the final values.
This let us analyze the 2 potential states (Infinite with 2 sources or 4 sources)
and compute a deterministic result for the MergerList values.
Additionally, this lets us avoid even allocating new objects for this too, further
reducing memory usage.
diff --git a/src/main/java/net/minecraft/world/phys/shapes/IndirectMerger.java b/src/main/java/net/minecraft/world/phys/shapes/IndirectMerger.java
index e164c524aef4fa81fe96ac43454eecff1c38b9c1..9cfbbc61fcfc678f0988d6d45c7994d128051744 100644
--- a/src/main/java/net/minecraft/world/phys/shapes/IndirectMerger.java
+++ b/src/main/java/net/minecraft/world/phys/shapes/IndirectMerger.java
@@ -10,12 +10,33 @@ public class IndirectMerger implements IndexMerger {
private final int[] firstIndices;
private final int[] secondIndices;
private final int resultLength;
+ // Paper start
+ private static final int[] INFINITE_B_1 = new int[]{1, 1};
+ private static final int[] INFINITE_B_0 = new int[]{0, 0};
+ private static final int[] INFINITE_C = new int[]{0, 1};
+ // Paper end
public IndirectMerger(DoubleList first, DoubleList second, boolean includeFirstOnly, boolean includeSecondOnly) {
double d = Double.NaN;
int i = first.size();
int j = second.size();
int k = i + j;
+ // Paper start - optimize common path of infinity doublelist
+ int size = first.size();
+ double tail = first.getDouble(size - 1);
+ double head = first.getDouble(0);
+ if (head == Double.NEGATIVE_INFINITY && tail == Double.POSITIVE_INFINITY && !includeFirstOnly && !includeSecondOnly && (size == 2 || size == 4)) {
+ this.result = second.toDoubleArray();
+ this.resultLength = second.size();
+ if (size == 2) {
+ this.firstIndices = INFINITE_B_0;
+ } else {
+ this.firstIndices = INFINITE_B_1;
+ }
+ this.secondIndices = INFINITE_C;
+ return;
+ }
+ // Paper end
this.result = new double[k];
this.firstIndices = new int[k];
this.secondIndices = new int[k];
diff --git a/src/main/java/net/minecraft/world/phys/shapes/Shapes.java b/src/main/java/net/minecraft/world/phys/shapes/Shapes.java
index 0fdd2cdd8d215ca1523eda8ad7316cdd5f41a6b5..86df4ef44d0a5107ee929dfd40d8ccb0779e8bfc 100644
--- a/src/main/java/net/minecraft/world/phys/shapes/Shapes.java
+++ b/src/main/java/net/minecraft/world/phys/shapes/Shapes.java
@@ -286,9 +286,21 @@ public final class Shapes {
}
@VisibleForTesting
- protected static IndexMerger createIndexMerger(int size, DoubleList first, DoubleList second, boolean includeFirst, boolean includeSecond) {
+ private static IndexMerger createIndexMerger(int size, DoubleList first, DoubleList second, boolean includeFirst, boolean includeSecond) { // Paper - private
+ // Paper start - fast track the most common scenario
+ // doublelist is usually a DoubleArrayList with Infinite head/tails that falls to the final else clause
+ // This is actually the most common path, so jump to it straight away
+ if (first.getDouble(0) == Double.NEGATIVE_INFINITY && first.getDouble(first.size() - 1) == Double.POSITIVE_INFINITY) {
+ return new IndirectMerger(first, second, includeFirst, includeSecond);
+ }
+ // Split out rest to hopefully inline the above
+ return lessCommonMerge(size, first, second, includeFirst, includeSecond);
+ }
+
+ private static IndexMerger lessCommonMerge(int size, DoubleList first, DoubleList second, boolean includeFirst, boolean includeSecond) {
int i = first.size() - 1;
int j = second.size() - 1;
+ // Paper note - Rewrite below as optimized order if instead of nasty ternary
if (first instanceof CubePointRange && second instanceof CubePointRange) {
long l = lcm(i, j);
if ((long)size * l <= 256L) {
@@ -296,15 +308,22 @@ public final class Shapes {
}
}
- if (first.getDouble(i) < second.getDouble(0) - 1.0E-7) {
+ // Paper start - Identical happens more often than Disjoint
+ if (i == j && Objects.equals(first, second)) {
+ if (first instanceof IdenticalMerger) {
+ return (IndexMerger) first;
+ } else if (second instanceof IdenticalMerger) {
+ return (IndexMerger) second;
+ }
+ return new IdenticalMerger(first);
+ } else if (first.getDouble(i) < second.getDouble(0) - 1.0E-7) {
return new NonOverlappingMerger(first, second, false);
} else if (second.getDouble(j) < first.getDouble(0) - 1.0E-7) {
return new NonOverlappingMerger(second, first, true);
} else {
- return (IndexMerger)(i == j && Objects.equals(first, second)
- ? new IdenticalMerger(first)
- : new IndirectMerger(first, second, includeFirst, includeSecond));
+ return new IndirectMerger(first, second, includeFirst, includeSecond);
}
+ // Paper end
}
public interface DoubleLineConsumer {