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Dreeam
2025-06-03 09:49:56 +08:00
parent da5610cdc4
commit 3d14e36fe8
307 changed files with 1764 additions and 1722 deletions
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leaf-server/minecraft-patches/features/0215-Slightly-optimized-VarInt-write.patch
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@@ -1,87 +0,0 @@
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Taiyou06 <kaandindar21@gmail.com>
Date: Mon, 24 Feb 2025 21:11:09 +0100
Subject: [PATCH] Slightly optimized VarInt#write
Use switch case instead of if-else for branches. It makes it able to use
tableswitch instruction for better efficiency.
Improves it around 1% to 5%
diff --git a/net/minecraft/network/VarInt.java b/net/minecraft/network/VarInt.java
index 6f8dd31582f0e1d3a71acc7a142c1f4ec0539d9e..4c9095995e8515c61d54f1c056be35a12a138ef3 100644
--- a/net/minecraft/network/VarInt.java
+++ b/net/minecraft/network/VarInt.java
@@ -52,35 +52,44 @@ public class VarInt {
public static ByteBuf write(ByteBuf buffer, int value) {
// Gale start - Velocity - optimized VarInt#write
- if ((value & 0xFFFFFF80) == 0) {
- buffer.writeByte(value);
- } else if ((value & 0xFFFFC000) == 0) {
- int w = (value & 0x7F) << 8
- | (value >>> 7)
- | 0x00008000;
- buffer.writeShort(w);
- } else if ((value & 0xFFE00000) == 0) {
- int w = (value & 0x7F) << 16
- | (value & 0x3F80) << 1
- | (value >>> 14)
- | 0x00808000;
- buffer.writeMedium(w);
- } else if ((value & 0xF0000000) == 0) {
- int w = (value & 0x7F) << 24
- | ((value & 0x3F80) << 9)
- | (value & 0x1FC000) >> 6
- | (value >>> 21)
- | 0x80808000;
- buffer.writeInt(w);
- } else {
- int w = (value & 0x7F) << 24
- | (value & 0x3F80) << 9
- | (value & 0x1FC000) >> 6
- | ((value >>> 21) & 0x7F)
- | 0x80808080;
- buffer.writeInt(w);
- buffer.writeByte(value >>> 28);
+ // Leaf start - Slightly optimized VarInt#write
+ int bytesNeeded = getByteSize(value);
+
+ switch (bytesNeeded) {
+ case 1:
+ buffer.writeByte(value);
+ break;
+ case 2:
+ int w2 = ((value & 0x7F) << 8) | (value >>> 7) | 0x00008000;
+ buffer.writeShort(w2);
+ break;
+ case 3:
+ int w3 = (value & 0x7F) << 16
+ | (value & 0x3F80) << 1
+ | (value >>> 14)
+ | 0x00808000;
+ buffer.writeMedium(w3);
+ break;
+ case 4:
+ int w4 = (value & 0x7F) << 24
+ | ((value & 0x3F80) << 9)
+ | (value & 0x1FC000) >> 6
+ | (value >>> 21)
+ | 0x80808000;
+ buffer.writeInt(w4);
+ break;
+ case 5:
+ int w5 = (value & 0x7F) << 24
+ | (value & 0x3F80) << 9
+ | (value & 0x1FC000) >> 6
+ | ((value >>> 21) & 0x7F)
+ | 0x80808080;
+ buffer.writeInt(w5);
+ buffer.writeByte(value >>> 28);
+ break;
}
+ // Leaf end - Slightly optimized VarInt#write
+
return buffer;
}