Lightmap Texture Viewer / Dumper

Adds a debug command to display the lightmap or gui items atlas to the screen, also allows the lightmap to be dumped to a texture

308 Downloads

fabricutility

Rent Server with this Mod

Screenshots

About this Mod

Texture Viewer

Adds a debug command that displays the lightmap and gui items atlas for debugging purposes. As of v1.1, also allows the lightmap to be dumped to a texture using the F3 + S keybind

Run /eg_texture_viewer <viewer name> <boolean> to enable or disable the viewers, alternatively you can use /eg_texture_viewer <viewer name> <int> to change the size. <viewer name> can be either lightmap or items_atlas

The items_atlas viewer will only show when an item is currently being rendered in a gui. This is not the same thing as the block/item texture atlas, its mainly just part of this mod as I was curious how it looked ingame

Available Versions

v1.2 for mc 1.21.11release

MC 1.21.11fabric

December 29, 2025

v1.1.1 for mc 25w41arelease

MC 25w41afabric

October 10, 2025

v1.1 for mc 1.21.9 - 1.21.10release

MC 25w35a, 25w36a, 25w36b, 1.21.9, 1.21.10fabric

September 8, 2025

v1.0 for mc 1.21.7 - 1.21.8release

MC 1.21.7, 1.21.8fabric

September 8, 2025

How to Install Lightmap Texture Viewer / Dumper on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.11).

Install Mod

Open the mod browser in the dashboard and search for "Lightmap Texture Viewer / Dumper". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabric

Minecraft Versions

1.21.11, 25w41a, 1.21.10 (+6 more)

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Lightmap Texture Viewer / Dumper server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.11). You can switch loaders with one click in the panel.

Is Lightmap Texture Viewer / Dumper compatible with fabric?

Lightmap Texture Viewer / Dumper officially supports fabric for Minecraft 1.21.11, 25w41a, 1.21.10. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Lightmap Texture Viewer / Dumper – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Lightmap Texture Viewer / Dumper consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.