mod
Faster Iris Shadow Mapper [FISM]Minecraft mod for 26.3
Slightly improves the speed of Iris' shadow mapper. Built-in in Iris since Iris 1.11.2
- Latest version
- 1.0.7
- Minecraft
- 1.20.1 to 26.3
- Java
- Java 25+
- Loaders
- Fabric, Quilt, NeoForge, Forge
- Licence
- MIT
- Downloads
- 601.2k
- Updated
- 2 mo ago
- Available on
- Modrinth
Screenshots
Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.
Minecraft versions
Every version Faster Iris Shadow Mapper [FISM] declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 26.3 | Fabric, Quilt, NeoForge, Forge | 25+ | declared | 15 Sept 2026 |
| 26.2 | Forge, Quilt, NeoForge, Fabric | 25+ | declared | 16 Jun 2026 |
| 26.1.2 | Forge, Quilt, NeoForge, Fabric | 25+ | declared | 9 Apr 2026 |
| 26.1.1 | Forge, Quilt, NeoForge, Fabric | 25+ | declared | 1 Apr 2026 |
| 26.1 | Forge, Quilt, NeoForge, Fabric | 25+ | declared | 24 Mar 2026 |
| 1.21.11 | Forge, Quilt, NeoForge, Fabric | 21+ | declared | 9 Dec 2025 |
| 1.21.10 | Forge, Quilt, NeoForge, Fabric | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Forge, Quilt, NeoForge, Fabric | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Fabric, Forge, NeoForge, Quilt | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Fabric, Quilt, NeoForge, Forge | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Forge, Quilt, NeoForge, Fabric | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Forge, Quilt, NeoForge, Fabric | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Forge, Quilt, NeoForge, Fabric | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | NeoForge, Quilt, Forge, Fabric | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Fabric, Quilt, NeoForge, Forge | 21+ | declared | 22 Oct 2024 |
| 1.21.1 | Forge, Quilt, NeoForge, Fabric | 21+ | declared | 8 Aug 2024 |
| 1.21 | Forge, Quilt, NeoForge, Fabric | 21+ | declared | 13 Jun 2024 |
| 1.20.1 | NeoForge, Forge, Fabric, Quilt | 17+ | declared | 12 Jun 2023 |
Download
From Faster Iris Shadow Mapper [FISM]’s own host. Nothing is re-hosted here.
For Minecraft 26.3
Choose the loader you use before downloading.
- Choose file on publisher ↗
Fabric, Quilt
1.0.7 · 20 Sept 2026
Multiple loaders are listed; verify the file before downloading.
Most recently published release
fastershadowmapper+26.3-1.0.7.jar · 22 KB · for 26.3 · Fabric, Quilt
e89d733559a4…Older versions7Hide older versions
- 1.0.621 Jun 20261.20.123 KB
12ec620c3241…Choose file on publisher ↗ - 1.0.515 Jun 20261.21.1, 1.21, 1.20.121 KB
2f0b39bada45…Choose file on publisher ↗ - 1.0.415 Jun 202626.2, 26.1.2, 26.1.1, 26.1, 1.21.1 +2 more23 KB
6094675395a2…Choose file on publisher ↗ - 1.0.314 Jun 20261.21.1, 1.21, 1.20.123 KB
cd846942c879…Choose file on publisher ↗ - 1.0.214 Jun 202626.1.2, 26.1.1, 26.1, 1.21.11, 1.21.10 +11 more24 KB
be8a6fde7cde…Choose file on publisher ↗ - 1.0.111 Jun 202626.1.2, 26.1.1, 26.1, 1.21.11, 1.21.10 +11 more25 KB
77a3a9226f69…Choose file on publisher ↗ - 1.0.011 Jun 20261.21.10, 1.21.929 KB
f34ffe7003eb…Choose file on publisher ↗
Dependencies
What Faster Iris Shadow Mapper [FISM]declares it needs, from the author’s own release metadata. A required one has to be installed alongside it or it will not load.
Frequently asked
Does Faster Iris Shadow Mapper [FISM] work on Minecraft 26.3?
Yes. 26.3 is the newest Minecraft version Faster Iris Shadow Mapper [FISM] declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does Faster Iris Shadow Mapper [FISM] support?
Everything the author has declared, from 1.20.1 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Faster Iris Shadow Mapper [FISM] on the client or the server?
The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.
Which platform or loader does Faster Iris Shadow Mapper [FISM] support?
Fabric, Quilt, NeoForge, Forge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Faster Iris Shadow Mapper [FISM]?
Among the supported Minecraft releases above, the highest recorded requirement is Java 25 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.
What does Faster Iris Shadow Mapper [FISM] need to run?
It declares Fabric API as required, so that has to be installed alongside it or it will not load. Each one is linked in the dependencies section above.
What licence is Faster Iris Shadow Mapper [FISM] under?
MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Faster Iris Shadow Mapper [FISM]?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Faster Iris Shadow Mapper [FISM] safely?
Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .