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fix(streaming): load water-surface chunks over submerged columns

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MDietermann
2026-06-03 14:13:26 +02:00
parent 225c6f7253
commit 102d8166aa
2 changed files with 113 additions and 42 deletions
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13
World/Streaming/ChunkStreamer.cs
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@@ -175,8 +175,9 @@ public sealed class ChunkStreamer : IDisposable
// Fills `into` with the chunk positions to load for a viewer at chunk
// `center`, over a square horizontal region of Chebyshev radius `radiusH`.
// Per column the full vertical stack from bedrock (cy 0) up to the
// surface-top chunk is loaded, plus any section above the surface holding
// player edits (e.g. a built tower).
// surface-top chunk (clamped up to the sea-level chunk so submerged columns
// load their opaque-water surface) is loaded, plus any section above that
// holding player edits (e.g. a built tower).
private void CollectTargets(Vector3i center, int radiusH, HashSet<Vector3i> into)
{
for (int dx = -radiusH; dx <= radiusH; dx++)
@@ -185,7 +186,13 @@ public sealed class ChunkStreamer : IDisposable
int cx = center.X + dx;
int cz = center.Z + dz;
int surfaceTop = ChunkMath.FloorDiv(this.SurfaceTopHeight(cx, cz), VoxelChunk.Size);
// Clamp the column top up to at least the sea-level chunk: where the
// terrain surface is below sea level, WorldGenerator fills opaque water
// from the surface up to SeaLevel, so the column must load through the
// waterline or the submerged water surface renders as see-through holes.
int surfaceTop = Math.Max(
ChunkMath.FloorDiv(this.SurfaceTopHeight(cx, cz), VoxelChunk.Size),
ChunkMath.FloorDiv(WorldConstants.SeaLevel, VoxelChunk.Size));
ChunkStreamer.AddColumn(into, cx, cz, 0, surfaceTop);
int clampedTop = Math.Min(WorldConstants.WorldHeightChunks - 1, surfaceTop);