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77a5779e24
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: 2ec53f49 PR-1050: Fix empty result check for Complex Recipes 10671012 PR-1044: Add CrafterCraftEvent 4d87ffe0 Use correct method in JavaDoc ae5e5817 SPIGOT-7850: Add API for Bogged shear state 46b6d445 SPIGOT-7837: Support data pack banner patterns d5d0cefc Fix JavaDoc error b3c2b83d PR-1036: Add API for InventoryView derivatives 1fe2c75a SPIGOT-7809: Add ShieldMeta CraftBukkit Changes: 8ee6fd1b8 SPIGOT-7857: Improve ItemMeta block data deserialization 8f26c30c6 SPIGOT-7857: Fix spurious internal NBT tag when deserializing BlockStateMeta 759061b93 SPIGOT-7855: Fire does not spread or burn blocks 00fc9fb64 SPIGOT-7853: AnvilInventory#getRepairCost() always returns 0 7501e2e04 PR-1450: Add CrafterCraftEvent 8c51673e7 SPIGOT-5731: PortalCreateEvent#getEntity returns null for nether portals ignited by flint and steel d53d0d0b1 PR-1456: Fix inverted logic in CraftCrafterView#setSlotDisabled 682a678c8 SPIGOT-7850: Add API for Bogged shear state fccf5243a SPIGOT-7837: Support data pack banner patterns 9c3bd4390 PR-1431: Add API for InventoryView derivatives 0cc6acbc4 SPIGOT-7849: Fix FoodComponent serialize with "using-converts-to" using null 2c5474952 Don't rely on tags for CraftItemMetas 20d107e46 SPIGOT-7846: Fix ItemMeta for hanging signs 76f59e315 Remove redundant clone in Dropper InventoryMoveItemEvent e61a53d25 SPIGOT-7817: Call InventoryMoveItemEvent for Crafters 894682e2d SPIGOT-7839: Remove redundant Java version checks 2c12b2187 SPIGOT-7809: Add ShieldMeta and fix setting shield base colours Spigot Changes: fb8fb722 Rebuild patches 34bd42b7 SPIGOT-7835: Fix issue with custom hopper settings
64 lines
3.8 KiB
Diff
64 lines
3.8 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 b09bc1dac649ce9f4826edc1923c843804226993..ac8447e20531ad59d5e26c6db541d6e844d56c0f 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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@@ -509,6 +509,16 @@ public final class DensityFunctions {
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);
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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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@@ -524,12 +534,26 @@ 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) < -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) < -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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