Pyvtron RT Legacy is a shader that is based on the old SEUS Shader.
Release Date: April 26 2025
Features: Volumetric Fog, Water Caustics, Volumetric Clouds, High Resolution Graphics.
Performance Impact: High.
AMD CPU or Intel CPU.
Nvidia GPU.
A graphics card that supports OpenGL 4.6
Note: I currently only have access to Nvidia GPUs for testing.
Because of this, I cannot ensure that this shader will work properly for AMD and Intel GPUs.
That said, I will still try to fix any issues that occur for AMD and Intel users.
First download OptiFine or Iris Shaders
Run the .jar and click on Install.
Download the latest version of Pyvtron
Open the Minecraft Launcher. You’ll see the OptiFine profile or Iris Shaders profile sellect you profile and Start Minecraft.
Go to Options → Video Settings → Shaders → Shaderpacks Folder.
Drag the downloaded shaderpack into the shaderpacks folder.
Select the shaderpack ingame.
Enjoy.
Please Read The License Before Using This Shaderpack Or Modify It