Seamless Shaders
by jacobxny
Seamless Shaders lets players switch between Iris shaders quickly, without opening the shader screen first.
What it does
A Fabric client mod for Iris Shaders. Once installed, shader packs can be changed in game with the arrow keys, which skips the settings menu for everyday switching. Its only job is that shortcut, so it adds no blocks, items or world content.
Sodium and Fabric API are required dependencies, and Iris Shaders is needed as well because the mod switches its packs. Only the client needs Seamless Shaders: a server runs without it, and players may join a server that does not have it. Files are published for Fabric across 12 release versions, 1.21 – 1.21.11, and the latest, 1.0.0+1.21.11, targets 1.21.11.
The code is released under the MIT License, but the project is not open source in the sense of a public repository. Players who only want quicker shader changes, rather than a full shader menu, are the likely audience.
Key features
Arrow key shader switching
The arrow keys move through installed Iris shader packs during play, so a new pack can be tried without leaving the game view.
No shader screen needed
Changing packs does not require opening the shader settings screen, which keeps switching to a few key presses.
Iris integration
The mod works with the shader packs Iris already loads, so no separate pack list has to be maintained.
Compatibility
Latest build for each game version and loader.
1.21.x12 of 12 versions with builds
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 3
Use cases
Trying shader packs
Someone comparing several shader packs can cycle through them quickly and see each one in the current scene.
Who it’s for: Players who use Iris Shaders on Fabric and change packs often. Players who rarely change shaders gain little from it.
How it compares
Shader Toggle is a Fabric mod for 1.21.11 that switches shaders too, but it is client and server, under the Creative Commons Attribution 4.0 license, and not open source. Render Distance Toggle is an open source Fabric client mod under the MIT License for 1.21.8 – 1.21.11, and it changes render distance rather than shaders.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Seamless Shaders | Fabric | 1.21 – 1.21.11 | Client-side only | 2025-12-09 |
| Shader Toggle | Fabric | 1.21.11 | Client and server | 2026-03-15 |
| Render Distance Toggle | Fabric | 1.21.8 – 1.21.11 | Client-side only | 2025-12-20 |
Questions
Does Seamless Shaders need Iris Shaders?
Must the server have Seamless Shaders?
Which game versions does it support?
In the catalog
Seamless Shaders is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
More from jacobxny
Similar mods
What the author says
Seamless Shaders adds a quick way to switch Iris shaders in game without needing to open the shader screen.
Official listing
- Modrinth page
- modrinth.com/mod/seamless-shaders
- Owner
- jacobxny
- Published
- 2025-11-02
- Updated on Modrinth
- 2025-12-09
- Facts verified
- 2026-10-15