Can you use shaders without OptiFine?

Can you use shaders without OptiFine? We are going to be doing this using the Iris Shaders mod. This is a newer shaders mod that, while it does work with Optifine shaders packs, it does not require Optifine to run shaders. It also works with Fabric allowing you to install Minecraft mods on Fabric with the Iris shaders mod.

We are going to be doing this using the Iris Shaders mod. This is a newer shaders mod that, while it does work with Optifine shaders packs, it does not require Optifine to run shaders. It also works with Fabric allowing you to install Minecraft mods on Fabric with the Iris shaders mod.
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