Minecraft Bug - Water generation creates a visual barrier and some white spots resembling particles. #125

New Issue

2026-05-11T21:38:02Z

Zhekrom commented

2026-05-11 21:38:02 +00:00

Description

When exploring while flying over the water, a blue barrier forms�similar to the one seen in the image�but it is visible only from outside the water; it cannot be seen from underwater. Additionally, very small white blocks appear, seemingly the result of this same visual bug�or perhaps a different one.

Observed Behavior

When flying over the water, a blue barrier forms, visible only from outside the water.
It cannot be seen from underwater.
Very small white blocks appear, resembling particles.

Expected Behavior

No visual barriers should form over water.
No white spots or blocks should appear.

Impact

Affects visual experience during exploration.
May confuse players with false barriers.

Classification

Type: bug
Area: Minecraft / water generation / visual rendering / flying
Severity: low
Impact: Visual artifacts create false barriers and spots during flight over water

## Description When exploring while flying over the water, a blue barrier forms�similar to the one seen in the image�but it is visible only from outside the water; it cannot be seen from underwater. Additionally, very small white blocks appear, seemingly the result of this same visual bug�or perhaps a different one. ## Observed Behavior - When flying over the water, a blue barrier forms, visible only from outside the water. - It cannot be seen from underwater. - Very small white blocks appear, resembling particles. ## Expected Behavior - No visual barriers should form over water. - No white spots or blocks should appear. ## Impact - Affects visual experience during exploration. - May confuse players with false barriers. ## Classification - Type: bug - Area: Minecraft / water generation / visual rendering / flying - Severity: low - Impact: Visual artifacts create false barriers and spots during flight over water

Screenshot 2026-05-11 173718.png

3.2 MiB

Zhekrom changed title from ~~Minecraft Bug � Water generation creates a visual barrier and some white spots resembling particles.~~ to Minecraft Bug - Water generation creates a visual barrier and some white spots resembling particles.

2026-05-11 21:38:25 +00:00

spikerj commented

2026-06-15 05:52:04 +00:00

Partially addressed by spikersoft-angular PR #50. The white specks/particles are the same coplanar depth-fighting as #167 — water was drawing translucent faces against opaque blocks, which fight the opaque face and flicker as white/bright specks. PR #50 culls those faces, which should remove the specks.

The "blue barrier visible only from outside the water, not from underwater" is a separate matter — that's back-face culling of a water-vs-air surface (single-sided face), so it shows from one side only. I'd like to confirm against the build after PR #50 merges before deciding whether to make those surfaces double-sided. Leaving this open pending re-check of the barrier specifically; the speck part should be resolved.

Partially addressed by `spikersoft-angular` PR #50. The **white specks/particles** are the same coplanar depth-fighting as #167 — water was drawing translucent faces against opaque blocks, which fight the opaque face and flicker as white/bright specks. PR #50 culls those faces, which should remove the specks. The **"blue barrier visible only from outside the water, not from underwater"** is a separate matter — that's back-face culling of a water-vs-air surface (single-sided face), so it shows from one side only. I'd like to confirm against the build after PR #50 merges before deciding whether to make those surfaces double-sided. Leaving this open pending re-check of the barrier specifically; the speck part should be resolved.

spikerj commented

2026-06-15 09:57:51 +00:00

Partial fix landed: the white blocks / particle-like specks in this report share a root cause with #167 — translucent water faces were being drawn coplanar with opaque neighbour faces and z-fighting. That's fixed by the water face-culling change in spikersoft-angular PR #50 (now merged): water now only draws faces against air or translucent blocks.

The remaining item — the blue barrier visible only from outside the water (not from underwater) when flying over it — is a separate water-surface rendering behavior (the surface quad is single-sided, so it's culled when viewed from below). PR #50 changed which water faces are emitted, so its appearance may already differ. Could you re-test this part in-game now that #50 is merged and confirm whether the barrier still looks wrong? Keeping this open for that re-test; the specks portion is resolved.

Partial fix landed: the **white blocks / particle-like specks** in this report share a root cause with #167 — translucent water faces were being drawn coplanar with opaque neighbour faces and z-fighting. That's fixed by the water face-culling change in `spikersoft-angular` PR #50 (now merged): water now only draws faces against air or translucent blocks. The remaining item — the **blue barrier visible only from outside the water (not from underwater) when flying over it** — is a separate water-*surface* rendering behavior (the surface quad is single-sided, so it's culled when viewed from below). PR #50 changed which water faces are emitted, so its appearance may already differ. Could you re-test this part in-game now that #50 is merged and confirm whether the barrier still looks wrong? Keeping this open for that re-test; the specks portion is resolved.

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