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[ci skip] Add more identifying patch comments

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This commit is contained in:
Nassim Jahnke
2024-01-20 12:50:16 +01:00
parent 8b532bad3a
commit 1b920c7241
43 changed files with 180 additions and 194 deletions
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10
patches/server/Significantly-improve-performance-of-the-end-generat.patch
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@@ -19,7 +19,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
public static final KeyDispatchDataCodec<DensityFunctions.EndIslandDensityFunction> CODEC = KeyDispatchDataCodec.of(MapCodec.unit(new DensityFunctions.EndIslandDensityFunction(0L)));
private static final float ISLAND_THRESHOLD = -0.9F;
private final SimplexNoise islandNoise;
+ // Paper start
+ // Paper start - Perf: Optimize end generation
+ private static final class NoiseCache {
+ public long[] keys = new long[8192];
+ public float[] values = new float[8192];
@@ -28,7 +28,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ }
+ }
+ private static final ThreadLocal<java.util.Map<SimplexNoise, NoiseCache>> noiseCache = ThreadLocal.withInitial(java.util.WeakHashMap::new);
+ // Paper end
+ // Paper end - Perf: Optimize end generation
public EndIslandDensityFunction(long seed) {
RandomSource randomSource = new LegacyRandomSource(seed);
@@ -36,14 +36,14 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
float f = 100.0F - Mth.sqrt((long) x * (long) x + (long) z * (long) z) * 8.0F; // Paper - cast ints to long to avoid integer overflow
f = Mth.clamp(f, -100.0F, 80.0F);
+ NoiseCache cache = noiseCache.get().computeIfAbsent(sampler, noiseKey -> new NoiseCache()); // Paper
+ NoiseCache cache = noiseCache.get().computeIfAbsent(sampler, noiseKey -> new NoiseCache()); // Paper - Perf: Optimize end generation
for(int m = -12; m <= 12; ++m) {
for(int n = -12; n <= 12; ++n) {
long o = (long)(i + m);
long p = (long)(j + n);
- if (o * o + p * p > 4096L && sampler.getValue((double)o, (double)p) < (double)-0.9F) {
- float g = (Mth.abs((float)o) * 3439.0F + Mth.abs((float)p) * 147.0F) % 13.0F + 9.0F;
+ // Paper start - Significantly improve end generation performance by using a noise cache
+ // Paper start - Perf: Optimize end generation by using a noise cache
+ long key = net.minecraft.world.level.ChunkPos.asLong((int) o, (int) p);
+ int index = (int) it.unimi.dsi.fastutil.HashCommon.mix(key) & 8191;
+ float g = Float.MIN_VALUE;
@@ -57,7 +57,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
+ cache.values[index] = g;
+ }
+ if (g != Float.MIN_VALUE) {
+ // Paper end
+ // Paper end - Perf: Optimize end generation
float h = (float)(k - m * 2);
float q = (float)(l - n * 2);
float r = 100.0F - Mth.sqrt(h * h + q * q) * g;