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01a13871de
Patch documentation to come Issues with the old system that are fixed now: - World generation does not scale with cpu cores effectively. - Relies on the main thread for scheduling and maintaining chunk state, dropping chunk load/generate rates at lower tps. - Unreliable prioritisation of chunk gen/load calls that block the main thread. - Shutdown logic is utterly unreliable, as it has to wait for all chunks to unload - is it guaranteed that the chunk system is in a state on shutdown that it can reliably do this? Watchdog shutdown also typically failed due to thread checks, which is now resolved. - Saving of data is not unified (i.e can save chunk data without saving entity data, poses problems for desync if shutdown is really abnormal. - Entities are not loaded with chunks. This caused quite a bit of headache for Chunk#getEntities API, but now the new chunk system loads entities with chunks so that they are ready whenever the chunk loads in. Effectively brings the behavior back to 1.16 era, but still storing entities in their own separate regionfiles. The above list is not complete. The patch documentation will complete it. New chunk system hard relies on starlight and dataconverter, and most importantly the new concurrent utilities in ConcurrentUtil. Some of the old async chunk i/o interface (i.e the old file io thread reroutes _some_ calls to the new file io thread) is kept for plugin compat reasons. It will be removed in the next major version of minecraft. The old legacy chunk system patches have been moved to the removed folder in case we need them again.
54 lines
3.1 KiB
Diff
54 lines
3.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Spottedleaf <Spottedleaf@users.noreply.github.com>
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Date: Mon, 23 Aug 2021 04:50:05 -0700
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Subject: [PATCH] Always parse protochunk light sources unless it is marked as
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non-lit
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Chunks not marked as lit will always go through the light engine,
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so they should always have their block sources parsed.
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diff --git a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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index 0254b71ab9af6d74640aa5dc0533afa386e5f57f..34e351e04ac57e47e3cea671c61cc01d17983b77 100644
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--- a/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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+++ b/src/main/java/net/minecraft/world/level/chunk/storage/ChunkSerializer.java
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@@ -325,16 +325,33 @@ public class ChunkSerializer {
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BelowZeroRetrogen belowzeroretrogen = protochunk.getBelowZeroRetrogen();
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boolean flag5 = chunkstatus.isOrAfter(ChunkStatus.LIGHT) || belowzeroretrogen != null && belowzeroretrogen.targetStatus().isOrAfter(ChunkStatus.LIGHT);
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- if (!flag && flag5) {
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- Iterator iterator = BlockPos.betweenClosed(chunkPos.getMinBlockX(), world.getMinBuildHeight(), chunkPos.getMinBlockZ(), chunkPos.getMaxBlockX(), world.getMaxBuildHeight() - 1, chunkPos.getMaxBlockZ()).iterator();
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+ if (!flag) { // Paper - fix incorrect parsing of blocks that emit light - it should always parse it, unless the chunk is marked as lit
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+ // Paper start - let's make sure the implementation isn't as slow as possible
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+ int offX = chunkPos.x << 4;
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+ int offZ = chunkPos.z << 4;
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+
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+ int minChunkSection = io.papermc.paper.util.WorldUtil.getMinSection(world);
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+ int maxChunkSection = io.papermc.paper.util.WorldUtil.getMaxSection(world);
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+
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+ LevelChunkSection[] sections = achunksection;
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+ for (int sectionY = minChunkSection; sectionY <= maxChunkSection; ++sectionY) {
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+ LevelChunkSection section = sections[sectionY - minChunkSection];
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+ if (section == null || section.hasOnlyAir()) {
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+ // no sources in empty sections
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+ continue;
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+ }
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+ int offY = sectionY << 4;
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- while (iterator.hasNext()) {
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- BlockPos blockposition = (BlockPos) iterator.next();
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+ for (int index = 0; index < (16 * 16 * 16); ++index) {
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+ if (section.states.get(index).getLightEmission() <= 0) {
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+ continue;
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+ }
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- if (((ChunkAccess) object1).getBlockState(blockposition).getLightEmission() != 0) {
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- protochunk.addLight(blockposition);
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+ // index = x | (z << 4) | (y << 8)
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+ protochunk.addLight(new BlockPos(offX | (index & 15), offY | (index >>> 8), offZ | ((index >>> 4) & 15)));
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}
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}
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+ // Paper end
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}
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}
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