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31699ae9a8
* 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: a6a9d2a4 Remove some old ApiStatus.Experimental annotations be72314c SPIGOT-7300, PR-829: Add new DamageSource API providing enhanced information about entity damage b252cf05 SPIGOT-7576, PR-970: Add methods in MushroomCow to change stew effects b1c689bd PR-902: Add Server#isLoggingIPs to get log-ips configuration 08f86d1c PR-971: Add Player methods for client-side potion effects 2e3024a9 PR-963: Add API for in-world structures a23292a7 SPIGOT-7530, PR-948: Improve Resource Pack API with new 1.20.3 functionality 1851857b SPIGOT-3071, PR-969: Add entity spawn method with spawn reason cde4c52a SPIGOT-5553, PR-964: Add EntityKnockbackEvent CraftBukkit Changes: 38fd4bd50 Fix accidentally renamed internal damage method 80f0ce4be SPIGOT-7300, PR-1180: Add new DamageSource API providing enhanced information about entity damage 7e43f3b16 SPIGOT-7581: Fix typo in BlockMushroom ea14b7d90 SPIGOT-7576, PR-1347: Add methods in MushroomCow to change stew effects 4c687f243 PR-1259: Add Server#isLoggingIPs to get log-ips configuration 22a541a29 Improve support for per-world game rules cb7dccce2 PR-1348: Add Player methods for client-side potion effects b8d6109f0 PR-1335: Add API for in-world structures 4398a1b5b SPIGOT-7577: Make CraftWindCharge#explode discard the entity e74107678 Fix Crafter maximum stack size 0bb0f4f6a SPIGOT-7530, PR-1314: Improve Resource Pack API with new 1.20.3 functionality 4949f556d SPIGOT-3071, PR-1345: Add entity spawn method with spawn reason 20ac73ca2 PR-1353: Fix Structure#place not working as documented with 0 palette 3c1b77871 SPIGOT-6911, PR-1349: Change max book length in CraftMetaBook 333701839 SPIGOT-7572: Bee nests generated without bees f48f4174c SPIGOT-5553, PR-1336: Add EntityKnockbackEvent
64 lines
4.0 KiB
Diff
64 lines
4.0 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: SuperCoder7979 <25208576+SuperCoder7979@users.noreply.github.com>
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Date: Tue, 3 Nov 2020 23:48:05 -0600
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Subject: [PATCH] Significantly improve performance of the end generation
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This patch implements a noise cache for the end which significantly reduces the computation time of generation. This results in about a 3x improvement.
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Original code by SuperCoder7979 and Gegy in Lithium, licensed under LGPL-3.0 (Source: https://github.com/jellysquid3/lithium-fabric)
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Co-authored-by: Gegy <gegy1000@gmail.com>
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Co-authored-by: Dylan Xaldin <Puremin0rez515@gmail.com>
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Co-authored-by: pop4959 <pop4959@gmail.com>
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diff --git a/src/main/java/net/minecraft/world/level/levelgen/DensityFunctions.java b/src/main/java/net/minecraft/world/level/levelgen/DensityFunctions.java
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index fac92f37c32e0398ebc05d9a0378446fcabaef1a..01b60aaf484e1e327ca42d3573fd86d2abd749fa 100644
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--- a/src/main/java/net/minecraft/world/level/levelgen/DensityFunctions.java
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+++ b/src/main/java/net/minecraft/world/level/levelgen/DensityFunctions.java
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@@ -490,6 +490,16 @@ public final class DensityFunctions {
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public static final KeyDispatchDataCodec<DensityFunctions.EndIslandDensityFunction> CODEC = KeyDispatchDataCodec.of(MapCodec.unit(new DensityFunctions.EndIslandDensityFunction(0L)));
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private static final float ISLAND_THRESHOLD = -0.9F;
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private final SimplexNoise islandNoise;
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+ // Paper start - Perf: Optimize end generation
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+ private static final class NoiseCache {
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+ public long[] keys = new long[8192];
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+ public float[] values = new float[8192];
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+ public NoiseCache() {
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+ java.util.Arrays.fill(keys, Long.MIN_VALUE);
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+ }
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+ }
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+ private static final ThreadLocal<java.util.Map<SimplexNoise, NoiseCache>> noiseCache = ThreadLocal.withInitial(java.util.WeakHashMap::new);
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+ // Paper end - Perf: Optimize end generation
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public EndIslandDensityFunction(long seed) {
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RandomSource randomSource = new LegacyRandomSource(seed);
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@@ -505,12 +515,26 @@ public final class DensityFunctions {
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float f = 100.0F - Mth.sqrt((long) x * (long) x + (long) z * (long) z) * 8.0F; // Paper - cast ints to long to avoid integer overflow
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f = Mth.clamp(f, -100.0F, 80.0F);
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+ NoiseCache cache = noiseCache.get().computeIfAbsent(sampler, noiseKey -> new NoiseCache()); // Paper - Perf: Optimize end generation
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for(int m = -12; m <= 12; ++m) {
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for(int n = -12; n <= 12; ++n) {
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long o = (long)(i + m);
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long p = (long)(j + n);
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- if (o * o + p * p > 4096L && sampler.getValue((double)o, (double)p) < (double)-0.9F) {
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- float g = (Mth.abs((float)o) * 3439.0F + Mth.abs((float)p) * 147.0F) % 13.0F + 9.0F;
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+ // Paper start - Perf: Optimize end generation by using a noise cache
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+ long key = net.minecraft.world.level.ChunkPos.asLong((int) o, (int) p);
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+ int index = (int) it.unimi.dsi.fastutil.HashCommon.mix(key) & 8191;
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+ float g = Float.MIN_VALUE;
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+ if (cache.keys[index] == key) {
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+ g = cache.values[index];
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+ } else {
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+ if (o * o + p * p > 4096L && sampler.getValue((double)o, (double)p) < (double)-0.9F) {
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+ g = (Mth.abs((float) o) * 3439.0F + Mth.abs((float) p) * 147.0F) % 13.0F + 9.0F;
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+ }
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+ cache.keys[index] = key;
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+ cache.values[index] = g;
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+ }
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+ if (g != Float.MIN_VALUE) {
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+ // Paper end - Perf: Optimize end generation
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float h = (float)(k - m * 2);
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float q = (float)(l - n * 2);
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float r = 100.0F - Mth.sqrt(h * h + q * q) * g;
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