mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-18 20:53:09 +01:00
de6173b061
Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com> Co-authored-by: Lulu13022002 <41980282+Lulu13022002@users.noreply.github.com> Co-authored-by: Bjarne Koll <git@lynxplay.dev>
37 lines
1.7 KiB
Diff
37 lines
1.7 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Barnaby <22575741+barnabwhy@users.noreply.github.com>
|
|
Date: Sat, 29 Jun 2024 12:04:48 +0100
|
|
Subject: [PATCH] Optimise color distance check in MapPalette by removing
|
|
floating point math
|
|
|
|
|
|
diff --git a/src/main/java/org/bukkit/map/MapPalette.java b/src/main/java/org/bukkit/map/MapPalette.java
|
|
index c80faa079eca1564847070f0338fc98024639829..55a46db9d73885ea967ac929013906b687e476bb 100644
|
|
--- a/src/main/java/org/bukkit/map/MapPalette.java
|
|
+++ b/src/main/java/org/bukkit/map/MapPalette.java
|
|
@@ -29,14 +29,19 @@ public final class MapPalette {
|
|
}
|
|
|
|
private static double getDistance(@NotNull Color c1, @NotNull Color c2) {
|
|
- double rmean = (c1.getRed() + c2.getRed()) / 2.0;
|
|
- double r = c1.getRed() - c2.getRed();
|
|
- double g = c1.getGreen() - c2.getGreen();
|
|
+ // Paper start - Optimize color distance calculation by removing floating point math
|
|
+ int rsum = c1.getRed() + c2.getRed(); // Use sum instead of mean for no division
|
|
+ int r = c1.getRed() - c2.getRed();
|
|
+ int g = c1.getGreen() - c2.getGreen();
|
|
int b = c1.getBlue() - c2.getBlue();
|
|
- double weightR = 2 + rmean / 256.0;
|
|
- double weightG = 4.0;
|
|
- double weightB = 2 + (255 - rmean) / 256.0;
|
|
+ // All weights are 512x their original to avoid floating point division
|
|
+ int weightR = 1024 + rsum;
|
|
+ int weightG = 2048;
|
|
+ int weightB = 1024 + (255*2 - rsum);
|
|
+
|
|
+ // Division by 256 here is unnecessary as this won't change the result of the sort
|
|
return weightR * r * r + weightG * g * g + weightB * b * b;
|
|
+ // Paper end
|
|
}
|
|
|
|
@NotNull
|