ModsFinder

GFX-Debuggers (NSight and Renderdoc Injector)

by xirreal

GFX-Debuggers lets players attach NSight Graphics or RenderDoc to Minecraft from inside the game, without editing launcher JVM arguments.

FabricClient-side onlyMIT LicenseOpen source1.18 – 26.3

What it does

The mod is for graphics debugging on the client. Installing it removes the need to fiddle with launcher JVM settings: after the mod is in the mods folder and the game is launched, the player picks the debugger they want to use and attaches the game process through the chosen debugger. A dialog can be skipped in development environments through a debugger system property.

If a debugger is not found automatically, its location can be supplied through a launch setting, and the system property takes priority when both a property and a variable are set. For NSight Graphics, the path can point to the ngfx executable or to the installation root directory containing it. For RenderDoc, the path can point to the renderdoc.dll or librenderdoc.so library file, or to the directory containing it. On Linux a legacy environment variable still expects a direct path to librenderdoc.so.

The mod requires Fabric and runs on the client alone. Files are published for Fabric across 32 release versions, 1.18 – 26.3, and the latest file is 3.2.0 for 26.3, released 2026-03-26 under the MIT License. The code is open source.

Key features

  1. Debugger attachment from the game

    The player picks NSight Graphics or RenderDoc on launch and attaches the running game process to it.

  2. Automatic installation lookup

    Default install paths for NSight Graphics are checked on Windows and Linux, so most setups need no extra input.

  3. Manual path settings

    A launch setting gives the location of ngfx or the RenderDoc library when detection fails.

  4. Development dialog skip

    A system property suppresses the debugger selection dialog, which suits development environments that always use the same tool.

Compatibility

Latest build for each game version and loader.

26.x5 of 5 versions with builds
26.33.2.0
26.23.2.0
26.1.23.2.0
26.1.13.2.0
26.13.2.0
1.21.x12 of 12 versions with builds
1.21.113.2.0
1.21.103.2.0
1.21.93.2.0
1.21.83.2.0
1.21.73.2.0
1.21.63.2.0
1.21.53.2.0
1.21.43.2.0
1.21.33.2.0
1.21.23.2.0
1.21.13.2.0
1.213.2.0
1.20.x7 of 7 versions with builds
1.19.x5 of 5 versions with builds
1.18.x3 of 3 versions with builds
ReleaseBetaAlphaNot available

Only full game releases are shown. This mod publishes no snapshot builds.

How it compares

Full comparison

SuppressGL is a Fabric mod for the client, under the GNU General Public License v3.0 only, published for 1.19.4 – 1.21.3, and it is open source. Compose API is also Fabric and used on the client alone, licensed under CC0 1.0 Universal, and built for 1.21.11 – 26.1.2.

ModLoadersGame versionsEnvironmentUpdated
GFX-Debuggers (NSight and Renderdoc Injector)Fabric1.18 – 26.3Client-side only2026-03-26
SuppressGLFabric1.19.4 – 1.21.3Client-side only2024-11-30
Compose APIFabric1.21.11 – 26.1.2Client-side only2026-05-31

Questions

Does GFX-Debuggers require Fabric API?

No required dependency is listed for Fabric.

Does GFX-Debuggers need to be installed on a server?

No. Only the client needs the mod, because it is client-side only.

What if NSight Graphics or RenderDoc is not found?

Point the mod to the installation with a launch setting. A system property takes priority over an environment variable when both are set.

In the catalog

GFX-Debuggers (NSight and Renderdoc Injector) is one of 36,990 Utility mods on ModsFinder, and one of 25,772 Utility mods for Fabric. 8,071 mods support Minecraft 26.3.

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What the author says

The last option reads the saved configuration from the picker dialog (stored in.minecraft/config/gfx-debuggers.properties), including the selected debugger, platform, and any GPU Trace options. If no saved config exists, it falls back to showing the picker dialog. Both accept a direct path to the ngfx executable, an…
xirreal, on the Modrinth page

Official listing

Owner
xirreal
Published
2024-05-03
Updated on Modrinth
2026-03-26
Facts verified
2026-10-15

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