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PaperMC/Spigot-Server-Patches/0380-Optimize-Light-Recalculations.patch

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Remove Water optimization from the Light Optimizations case was found where it could cause light to become incorrect But we still get to optimize out any same block updates which reduces light operations
2018-09-29 04:37:43 +02:00
From 4f23ede23ade4b6f09398c7b12f6044ad88914d7 Mon Sep 17 00:00:00 2001
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. Additionally, as of 1.13, water now only blocks 1 light level instead of 3, meaning that light level decreasing is the same as air. This means, transitions between water and air also do not need to recalculate light, which saves a TON of updates caused by fluids flowing.
2018-09-29 03:30:03 +02:00
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.
diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
Remove Water optimization from the Light Optimizations case was found where it could cause light to become incorrect But we still get to optimize out any same block updates which reduces light operations
2018-09-29 04:37:43 +02:00
index 53aab97866..e4bda70bb9 100644
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. Additionally, as of 1.13, water now only blocks 1 light level instead of 3, meaning that light level decreasing is the same as air. This means, transitions between water and air also do not need to recalculate light, which saves a TON of updates caused by fluids flowing.
2018-09-29 03:30:03 +02:00
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
Remove Water optimization from the Light Optimizations case was found where it could cause light to become incorrect But we still get to optimize out any same block updates which reduces light operations
2018-09-29 04:37:43 +02:00
@@ -578,7 +578,7 @@ public class Chunk implements IChunkAccess {
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. Additionally, as of 1.13, water now only blocks 1 light level instead of 3, meaning that light level decreasing is the same as air. This means, transitions between water and air also do not need to recalculate light, which saves a TON of updates caused by fluids flowing.
2018-09-29 03:30:03 +02:00
} else {
if (flag1) {
this.initLighting();
- } else {
Remove Water optimization from the Light Optimizations case was found where it could cause light to become incorrect But we still get to optimize out any same block updates which reduces light operations
2018-09-29 04:37:43 +02:00
+ } else if (block != block1) { // Paper - Optimize light recalculations
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. Additionally, as of 1.13, water now only blocks 1 light level instead of 3, meaning that light level decreasing is the same as air. This means, transitions between water and air also do not need to recalculate light, which saves a TON of updates caused by fluids flowing.
2018-09-29 03:30:03 +02:00
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
Remove Water optimization from the Light Optimizations case was found where it could cause light to become incorrect But we still get to optimize out any same block updates which reduces light operations
2018-09-29 04:37:43 +02:00
index 13f69f1b82..763401835d 100644
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. Additionally, as of 1.13, water now only blocks 1 light level instead of 3, meaning that light level decreasing is the same as air. This means, transitions between water and air also do not need to recalculate light, which saves a TON of updates caused by fluids flowing.
2018-09-29 03:30:03 +02:00
--- 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()) {
Remove Water optimization from the Light Optimizations case was found where it could cause light to become incorrect But we still get to optimize out any same block updates which reduces light operations
2018-09-29 04:37:43 +02:00
+ if (iblockdata.getBlock() != iblockdata2.getBlock() && iblockdata2.b(this, blockposition) != iblockdata1.b(this, blockposition) || iblockdata2.e() != iblockdata1.e()) { // Paper - optimize light recalculations
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. Additionally, as of 1.13, water now only blocks 1 light level instead of 3, meaning that light level decreasing is the same as air. This means, transitions between water and air also do not need to recalculate light, which saves a TON of updates caused by fluids flowing.
2018-09-29 03:30:03 +02:00
this.methodProfiler.a("checkLight");
chunk.runOrQueueLightUpdate(() -> this.r(blockposition)); // Paper - Queue light update
this.methodProfiler.e();
--
2.19.0
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