mirror of
https://github.com/PaperMC/Paper.git
synced 2024-09-13 07:28:19 +02:00
38f0f0b71a
This should greatly improve performance by using a No Op lock while on the main thread. Vanilla always had a write lock on write operations, but we added a Read Lock during Async Chunks to make concurrent writes non fatal for Async Chunks. This means we added on a bunch of over head to all chunk read operations. This corrects that, as well as disabling the write lock while on main thread. It is a general rule that you do not touch a chunk async once it is loaded into the world, as we never had locks on the chunk before 1.13 even. So once we are on main, we don't expect concurrent access to begin with, so we don't need the write locks either.
78 lines
4.0 KiB
Diff
78 lines
4.0 KiB
Diff
From 1b776a800b336105e8b519498c9ad387a58035b0 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Fri, 28 Sep 2018 20:46:29 -0400
|
|
Subject: [PATCH] Optimize Light Recalculations
|
|
|
|
The server triggers light recalculations even if the new block
|
|
is the same as the old block. At this time, BlockData Properties
|
|
do not impact light calculations.
|
|
|
|
So the only way light should change, is if the block itself
|
|
changes from 1 block to another.
|
|
|
|
Also optimizes to not repeatedly look up the same chunk for
|
|
light lookups.
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
|
|
index 15a327923f..0b2d9a05f4 100644
|
|
--- a/src/main/java/net/minecraft/server/Chunk.java
|
|
+++ b/src/main/java/net/minecraft/server/Chunk.java
|
|
@@ -348,7 +348,7 @@ public class Chunk implements IChunkAccess {
|
|
private void a(int i, int j, int k, int l) {
|
|
if (l > k && this.areNeighborsLoaded(1)) { // Paper
|
|
for (int i1 = k; i1 < l; ++i1) {
|
|
- this.world.c(EnumSkyBlock.SKY, new BlockPosition(i, i1, j));
|
|
+ this.world.updateBrightness(EnumSkyBlock.SKY, new BlockPosition(i, i1, j), this); // Paper
|
|
}
|
|
|
|
this.x = true;
|
|
@@ -579,7 +579,7 @@ public class Chunk implements IChunkAccess {
|
|
} else {
|
|
if (flag1) {
|
|
this.initLighting();
|
|
- } else {
|
|
+ } else if (block != block1) { // Paper - Optimize light recalculations
|
|
this.runOrQueueLightUpdate(() -> { // Paper - Queue light update
|
|
int i1 = iblockdata.b(this.world, blockposition);
|
|
int j1 = iblockdata1.b(this.world, blockposition);
|
|
diff --git a/src/main/java/net/minecraft/server/World.java b/src/main/java/net/minecraft/server/World.java
|
|
index 13f69f1b82..4179ba7cd8 100644
|
|
--- a/src/main/java/net/minecraft/server/World.java
|
|
+++ b/src/main/java/net/minecraft/server/World.java
|
|
@@ -444,7 +444,7 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
|
|
} else {
|
|
IBlockData iblockdata2 = this.getType(blockposition);
|
|
|
|
- if (iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) {
|
|
+ if (iblockdata.getBlock() != iblockdata2.getBlock() && iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) { // Paper - optimize light recalculations
|
|
this.methodProfiler.a("checkLight");
|
|
chunk.runOrQueueLightUpdate(() -> this.r(blockposition)); // Paper - Queue light update
|
|
this.methodProfiler.e();
|
|
@@ -588,8 +588,9 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
|
|
}
|
|
|
|
if (this.worldProvider.g()) {
|
|
- for (i1 = k; i1 <= l; ++i1) {
|
|
- this.c(EnumSkyBlock.SKY, new BlockPosition(i, i1, j));
|
|
+ Chunk chunk = getChunkIfLoaded(i >> 4, j >> 4); // Paper
|
|
+ for (i1 = k; chunk != null && i1 <= l; ++i1) { // Paper
|
|
+ this.updateBrightness(EnumSkyBlock.SKY, new BlockPosition(i, i1, j), chunk); // Paper
|
|
}
|
|
}
|
|
|
|
@@ -2293,6 +2294,11 @@ public abstract class World implements IEntityAccess, GeneratorAccess, IIBlockAc
|
|
public boolean c(EnumSkyBlock enumskyblock, BlockPosition blockposition) {
|
|
// CraftBukkit start - Use neighbor cache instead of looking up
|
|
Chunk chunk = this.getChunkIfLoaded(blockposition.getX() >> 4, blockposition.getZ() >> 4);
|
|
+ // Paper start - optimize light updates where chunk is known
|
|
+ return updateBrightness(enumskyblock, blockposition, chunk);
|
|
+ }
|
|
+ public boolean updateBrightness(EnumSkyBlock enumskyblock, BlockPosition blockposition, Chunk chunk) {
|
|
+ // Paper end
|
|
if (chunk == null || !chunk.areNeighborsLoaded(1) /*!this.areChunksLoaded(blockposition, 17, false)*/) {
|
|
// CraftBukkit end
|
|
return false;
|
|
--
|
|
2.19.0
|
|
|