Complementary Unbound Shaders 1.21 / 1.20

3,474,015 views BY EminGTR — Last updated 3 February 2026

Complementary Shaders is the perfect shader pack to improve Minecraft’s graphics and performance. If you ever played Minecraft for more than five minutes, you know the game is incredibly fun – but a little bit lackluster in the graphics department. Fortunately for all Minecraft lovers out there, this shader pack is here to change that. That’s not to say you should expect a complete, 3D graphics overhaul. When you’re playing Minecraft, you’re not exactly in it because of realistic textures. That’s not what Complementary Shaders is here to change. Instead, this shaders improves a little bit of everything, while still maintaining its essence. Complementary Shaders is an off-shoot of another popular shader pack called BSL Shader. If you liked that pack, you’re going to love this one. This shaders takes the best out of BSL Shader and improves the rest. You can install it if you want to experience better graphics, gameplay, compatibility, and more.

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It’ll help you improve an already-great game like Minecraft is. Although it improves a little bit of everything, it will not ruin your performance. This shader pack is specially designed to keep everything running smoothly. Simply put, it just works. Not only that, but it’ll also fix compatibility issues that you might have with other shader packs. This Complementary Shaders pack always has the player in mind. With Complementary Shaders, you’ll realize Minecraft will run rather fast and better than with most other shader packs. No matter what GPU or drivers you have, this shader pack will make your game smoother compared to other shaders. Keep in mind this is a one-of-a-kind shaderpack. You can’t install it like the other ones. Make sure you pay attention to the installation guide before you do anything. Check and double-check it. Then, enjoy everything that Complementary Shaders has in store for you!

Complementary Unbound should be compatible with all of these Minecraft versions: 1.21.11 - 1.21.10 - 1.21.9 - 1.21.8 - 1.21.7 - 1.21.6 - 1.21.5 - 1.21.4 - 1.21.3 - 1.21.2 - 1.21.1 - 1.21 - 1.20.6 - 1.20.5 - 1.20.4 - 1.20.3 - 1.20.2 - 1.20.1 - 1.20 - 1.19.4 - 1.19.3 - 1.19.2 - 1.19.1 - 1.19 - 1.18.2 - 1.18.1 - 1.18 - 1.17.1 - 1.17 - 1.16.5 - 1.16.4 - 1.16.3 - 1.16.2 - 1.16.1 - 1.16 - 1.15.2 - 1.15.1 - 1.15 - 1.14.4 - 1.14.3 - 1.14.2 - 1.14 - 1.13.2 - 1.13.1 - 1.13 - 1.12.2 - 1.12 - 1.11.2 - 1.11 - 1.10.2 - 1.10 - 1.9.4 - 1.9 - 1.8.9 - 1.8.8 - 1.8.6 - 1.8.1 - 1.8

Complementary Unbound — Video & Screenshots

How to install Complementary Shaders:

Download and install Minecraft.
Open Minecraft launcher and setup your game profile for the Minecraft version you want to run. – in the top menu, select the “Installations” tab, click “New installation”, under the “Version” dropdown, select your preferred Minecraft version and click “Create”.
Download and install Optifine or Iris. – we recommend Iris, it’s a bit more optimized;
Open Minecraft launcher and select the newly created Optifine or Iris profile. – if in step 3 you chose to install optifine it will have an optifine profile, if iris it will have an iris profile;
Download the Complementary shader pack from the download section below.
Launch Minecraft.
For Optifine: Go to Options > Video Settings > Shaders and click “Shaders Folder” to open shaderpacks folder.
For Iris: Go to Options > Video Settings > Shader packs and click “Open Shader Pack Folder” to open shaderpacks folder.
Put the Complementary shader pack (.zip file) downloaded in step 5 into the .minecraft\shaderpacks folder you opened in step 7.
In the game, select Complementary Shaders from the list and click “Done”.

Complementary Unbound - Comparison Slider #1 day

Comparison slider #1 for those who want to compare vanilla Minecraft without any shaders installed (on the left) with Minecraft using this particular shader pack (on the right).

Vanilla

Complementary Shaders

Complementary Unbound - Comparison Slider #2 night

Comparison slider #2 for those who want to compare vanilla Minecraft without any shaders installed (on the left) with Minecraft using this particular shader pack (on the right).

Vanilla

Complementary Shaders

Complementary Unbound - Comparison Slider #3 day

Comparison slider #3 for those who want to compare vanilla Minecraft without any shaders installed (on the left) with Minecraft using this particular shader pack (on the right).

Vanilla

Complementary Shaders

Complementary Unbound Shader Pack Download

Credit for the creation of Complementary Unbound goes to EminGTR.
We do not modify or edit any resource packs. All resource packs, shaders and tools found on this website are linked directly to official sources rather than hosted on our own servers. We provide only the official download links from the original creators to ensure that your files are safe and secure.
These official links are updated manually and may occasionally stop working when a new version is released. We work hard to keep everything current so that you have a smooth experience. Please let us know in the comments if you find a link that no longer works.
Minecraft is a trademark of Mojang Studios and has no official connection to this website. Our goal is simply to share the best creations from the community with other players.
Please consider leaving a comment or voting for your favorite packs. This feedback helps authors improve their projects over time. You can also support the creators directly by visiting the official links located below the download section.

DOWNLOAD LINKS

The Java Edition of this shader pack requires Optifine or Iris to run and will not work without them! Get optifine here or get Iris here.

Java Edition:

[1.21.x – 1.7.x] Download Complementary Unbound Shaders

Download instructions:

Curseforge: download starts automatically after a few seconds;

Mediafire: click the big blue button with the text "DOWNLOAD";

Google Drive: in the top right corner you will see a small download icon (down arrow), click it and the download should start;

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AUTHOR LINKS EminGTR

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Official Complementary Website

Complementary Shaders on Modrinth

Complementary Shaders on Curseforge

Author: EminGTR

Last updated: 3 February 2026

Category: Shaders

Compatibility: Java

213 comments

Comments regarding "incompatibility message" will no longer be approved as the "incompatibility message" can be easily ignored by simply clicking "Yes" when prompted, or read our article How to fix «made for older version» problem with most resource packs?
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Before commenting that the resource pack crashed your game, google your crash log. This is usually a graphic card driver issue.