geforkt von Mirrors/Paper
e45b853e60
light calculations repeatedly looks up the same chunk while going down on the Y access. Pass the chunk to it to skip many round trips to the map lookup process. while the gains arent as big since we have last access cache, it should hopefully avoid many callstacks of depth and improve inlining, as well as avoids entering a synchronized code block. The avoiding of entering synchronized section is the main goal here.
78 Zeilen
4.0 KiB
Diff
78 Zeilen
4.0 KiB
Diff
From f8d45609bd1247f999df8ac62ca914e8b18e0b28 Mon Sep 17 00:00:00 2001
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From: Aikar <aikar@aikar.co>
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Date: Fri, 28 Sep 2018 20:46:29 -0400
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Subject: [PATCH] Optimize Light Recalculations
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The server triggers light recalculations even if the new block
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is the same as the old block. At this time, BlockData Properties
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do not impact light calculations.
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So the only way light should change, is if the block itself
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changes from 1 block to another.
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Also optimizes to not repeatedly look up the same chunk for
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light lookups.
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diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
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index 9162151e2a..651bb23be9 100644
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--- a/src/main/java/net/minecraft/server/Chunk.java
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+++ b/src/main/java/net/minecraft/server/Chunk.java
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@@ -347,7 +347,7 @@ public class Chunk implements IChunkAccess {
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private void a(int i, int j, int k, int l) {
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if (l > k && this.areNeighborsLoaded(1)) { // Paper
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for (int i1 = k; i1 < l; ++i1) {
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- this.world.c(EnumSkyBlock.SKY, new BlockPosition(i, i1, j));
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+ this.world.updateBrightness(EnumSkyBlock.SKY, new BlockPosition(i, i1, j), this); // Paper
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}
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this.x = true;
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@@ -578,7 +578,7 @@ public class Chunk implements IChunkAccess {
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} else {
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if (flag1) {
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this.initLighting();
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- } else {
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+ } else if (block != block1) { // Paper - Optimize light recalculations
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this.runOrQueueLightUpdate(() -> { // Paper - Queue light update
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int i1 = iblockdata.b(this.world, blockposition);
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int j1 = iblockdata1.b(this.world, blockposition);
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diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
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index 13f69f1b82..4179ba7cd8 100644
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--- a/src/main/java/net/minecraft/server/World.java
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+++ b/src/main/java/net/minecraft/server/World.java
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@@ -444,7 +444,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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} else {
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IBlockData iblockdata2 = this.getType(blockposition);
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- if (iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) {
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+ if (iblockdata.getBlock() != iblockdata2.getBlock() && iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) { // Paper - optimize light recalculations
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this.methodProfiler.a("checkLight");
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chunk.runOrQueueLightUpdate(() -> this.r(blockposition)); // Paper - Queue light update
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this.methodProfiler.e();
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@@ -588,8 +588,9 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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}
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if (this.worldProvider.g()) {
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- for (i1 = k; i1 <= l; ++i1) {
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- this.c(EnumSkyBlock.SKY, new BlockPosition(i, i1, j));
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+ Chunk chunk = getChunkIfLoaded(i >> 4, j >> 4); // Paper
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+ for (i1 = k; chunk != null && i1 <= l; ++i1) { // Paper
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+ this.updateBrightness(EnumSkyBlock.SKY, new BlockPosition(i, i1, j), chunk); // Paper
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}
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}
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@@ -2293,6 +2294,11 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
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public boolean c(EnumSkyBlock enumskyblock, BlockPosition blockposition) {
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// CraftBukkit start - Use neighbor cache instead of looking up
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Chunk chunk = this.getChunkIfLoaded(blockposition.getX() >> 4, blockposition.getZ() >> 4);
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+ // Paper start - optimize light updates where chunk is known
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+ return updateBrightness(enumskyblock, blockposition, chunk);
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+ }
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+ public boolean updateBrightness(EnumSkyBlock enumskyblock, BlockPosition blockposition, Chunk chunk) {
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+ // Paper end
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if (chunk == null || !chunk.areNeighborsLoaded(1) /*!this.areChunksLoaded(blockposition, 17, false)*/) {
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// CraftBukkit end
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return false;
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--
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2.19.0
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