Skip impossible deposit variants

- Scan pack once per data load for declared depositVariants
- Placed ores skip the per-block cave biome lookup when none exist
This commit is contained in:
Brian Neumann-Fopiano
2026-09-28 11:11:20 -04:00
parent 2ce36eb6f1
commit b47c7ae6aa
2 changed files with 96 additions and 4 deletions
@@ -45,15 +45,20 @@ import art.arcane.volmlib.util.scheduling.PrecisionStopwatch;
import art.arcane.volmlib.nativelib.terrain.NativeBlockState;
import art.arcane.iris.generation.block.B;
import art.arcane.iris.generation.block.VectorMap;
import art.arcane.iris.pack.loading.IrisData;
import art.arcane.iris.pack.loading.IrisRegistrant;
import art.arcane.iris.pack.loading.ResourceLoader;
import java.util.ArrayList;
import java.util.List;
import java.util.function.Function;
public class IrisDepositModifier extends EngineAssignedModifier<NativeBlockState> {
private static final int CLUMPS_PER_BATCH = 8;
private static final int PREPARATION_BATCH_COUNT = 4;
private final RNG rng;
private volatile DepositVariantScan variantScan;
public IrisDepositModifier(Engine engine) {
super(engine, "Deposit");
@@ -271,6 +276,7 @@ public class IrisDepositModifier extends EngineAssignedModifier<NativeBlockState
boolean oreDeposit = deposit.ore();
IrisDimensionCarvingResolver.State carvingState = new IrisDimensionCarvingResolver.State();
IrisDimension dimension = getDimension();
boolean variants = depositVariantsPossible();
for (PreparedClump prepared : deposit.clumps()) {
IrisObject clump = prepared.object();
int x = prepared.x();
@@ -325,8 +331,8 @@ public class IrisDepositModifier extends EngineAssignedModifier<NativeBlockState
if (chunk.get(nx, ny, nz, MatterCavern.class) == null) {
NativeBlockState ore = cursor.value();
NativeBlockState remapped = resolveDepositVariant(
cx, cz, nx, ny, nz, ore, dimension, context, carvingState);
NativeBlockState remapped = variants ? resolveDepositVariant(
cx, cz, nx, ny, nz, ore, dimension, context, carvingState) : null;
NativeBlockState finalBlock = remapped != null
? remapped
: B.toDeepSlateOre(current, ore);
@@ -460,6 +466,51 @@ public class IrisDepositModifier extends EngineAssignedModifier<NativeBlockState
return Math.max(minimum, Math.min(center, maximum));
}
/**
* The per-block variant lookup resolves a cave biome for every placed ore, but it can only ever match when
* some biome, region or the dimension of the loaded pack declares variants. Anything the scan cannot
* enumerate (stacked dimensions, unreadable loaders) keeps the lookup.
*/
private boolean depositVariantsPossible() {
IrisData data = getData();
DepositVariantScan scan = variantScan;
if (scan == null || scan.data() != data) {
scan = new DepositVariantScan(data, scanDepositVariants(data));
variantScan = scan;
}
return scan.possible();
}
private boolean scanDepositVariants(IrisData data) {
IrisDimension dimension = getDimension();
if (data == null || dimension == null || getEngine().getDimensionStackContext() != null
|| dimension.getDepositVariants() == null || !dimension.getDepositVariants().isEmpty()) {
return true;
}
Boolean regions = declaresVariants(data.getRegionLoader(), IrisRegion::getDepositVariants);
Boolean biomes = declaresVariants(data.getBiomeLoader(), IrisBiome::getDepositVariants);
return regions == null || regions || biomes == null || biomes;
}
private static <T extends IrisRegistrant> Boolean declaresVariants(ResourceLoader<T> loader,
Function<T, ? extends List<IrisDepositVariant>> variants) {
String[] keys = loader == null ? null : loader.getPossibleKeys();
if (keys == null) {
return null;
}
for (String key : keys) {
T loaded = loader.load(key);
if (loaded == null) {
continue;
}
List<IrisDepositVariant> declared = variants.apply(loaded);
if (declared == null || !declared.isEmpty()) {
return true;
}
}
return false;
}
private NativeBlockState resolveDepositVariant(int cx, int cz, int nx, int localY, int nz, NativeBlockState ore, IrisDimension dimension, ChunkContext context, IrisDimensionCarvingResolver.State carvingState) {
int worldX = (cx << 4) + nx;
int worldZ = (cz << 4) + nz;
@@ -548,6 +599,9 @@ public class IrisDepositModifier extends EngineAssignedModifier<NativeBlockState
private record DepositPlan(IrisDepositGenerator generator, long seed, boolean ore, int attempts) {
}
private record DepositVariantScan(IrisData data, boolean possible) {
}
private record PreparedDeposit(IrisDepositGenerator generator, boolean ore, List<PreparedClump> clumps) {
}
@@ -30,12 +30,15 @@ import org.junit.Before;
import org.junit.ClassRule;
import org.junit.Test;
import org.mockito.MockedStatic;
import art.arcane.iris.pack.loading.ResourceLoader;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.ArgumentMatchers.anyInt;
@@ -84,8 +87,25 @@ public class IrisDepositModifierParityTest {
}
}
@SuppressWarnings("unchecked")
@Test
public void variantFreePacksSkipPerBlockCaveBiomeLookupsWithIdenticalOutput() {
for (long seed : new long[]{101L, -73L, 90181L}) {
AtomicInteger scannedLookups = new AtomicInteger();
AtomicInteger unscannedLookups = new AtomicInteger();
long[] scanned = generateConfigured(seed, false, false, true, scannedLookups);
long[] unscanned = generateConfigured(seed, false, false, false, unscannedLookups);
assertArrayEquals("seed=" + seed, unscanned, scanned);
assertTrue(scannedLookups.get() < unscannedLookups.get());
}
}
private long[] generateConfigured(long seed, boolean multicore) {
return generateConfigured(seed, multicore, true, false, new AtomicInteger());
}
@SuppressWarnings("unchecked")
private long[] generateConfigured(long seed, boolean multicore, boolean caveVariant, boolean enumerablePack,
AtomicInteger caveBiomeLookups) {
Engine engine = mock(Engine.class, RETURNS_DEEP_STUBS);
ChunkContext context = mock(ChunkContext.class, RETURNS_DEEP_STUBS);
IrisDimension dimension = new IrisDimension();
@@ -99,7 +119,9 @@ public class IrisDepositModifierParityTest {
denied.setLoadKey("denied");
IrisDepositVariant variant = new IrisDepositVariant().setMinHeight(-64).setMaxHeight(64);
variant.getRemap().put("minecraft:gold_ore", "minecraft:redstone_ore");
cave.getDepositVariants().add(variant);
if (caveVariant) {
cave.getDepositVariants().add(variant);
}
dimension.getDeposits().add(generator("granite", IrisDepositShape.IRIS, 25, 70,
IrisDepositHeightDistribution.CLIPPED_UNIFORM, "stone", "deepslate"));
region.getDeposits().add(generator("iron_ore", IrisDepositShape.VANILLA_ELLIPSOID, 20, 110,
@@ -118,7 +140,23 @@ public class IrisDepositModifierParityTest {
when(engine.getMinHeight()).thenReturn(-64);
when(engine.getSeedManager().getDeposit()).thenReturn(seed);
when(engine.getDimension()).thenReturn(dimension);
if (enumerablePack) {
IrisData data = mock(IrisData.class);
ResourceLoader<IrisBiome> biomes = mock(ResourceLoader.class);
ResourceLoader<IrisRegion> regions = mock(ResourceLoader.class);
when(data.getBiomeLoader()).thenReturn(biomes);
when(data.getRegionLoader()).thenReturn(regions);
when(biomes.getPossibleKeys()).thenReturn(new String[]{"allowed", "denied", "surface"});
when(biomes.load("allowed")).thenReturn(cave);
when(biomes.load("denied")).thenReturn(denied);
when(biomes.load("surface")).thenReturn(surface);
when(regions.getPossibleKeys()).thenReturn(new String[]{"region"});
when(regions.load("region")).thenReturn(region);
when(engine.getData()).thenReturn(data);
when(engine.getDimensionStackContext()).thenReturn(null);
}
when(engine.getCaveBiome(anyInt(), anyInt(), anyInt(), any())).thenAnswer(invocation -> {
caveBiomeLookups.incrementAndGet();
int x = invocation.getArgument(0);
int y = invocation.getArgument(1);
int z = invocation.getArgument(2);