SEUS PTGI E12 And E13 1024x576

SEUS PTGI E12 & E13 for Minecraft 1.16.5

SEUS PTGI is the world’s first raytraced shaderpack for Minecraft which does not require an RTX graphics card. SEUS PTGI is one of the first projects to implement ray traced lighting in a realtime video game.

What is SEUS?

“SEUS” stands for Sonic Ether’s Unbelievable Shaders. It is the name given to all shader projects created by the developer named Sonic Ether. For many years now, Sonic Ether has been the most popular developer of Minecraft shaders. This is because he has frequently pushed the limits of what is possible in Minecraft. SEUS was the first Minecraft shader to implement sunlight shadows, realistic water reflections, volumetric fog, underwater caustic effects, and now raytraced lighting.

SEUS V10.1 Ultra 1024x576
An old version of SEUS v10.1 Ultra from around 2015.

What is Raytracing?

Raytracing is a computer graphics technique that allows for more realistic rendering effects that rasterization, which is what video games use. In the past, raytracing was too slow to be used in realtime, so it was never feasible to implement in a video game; raytracing a single frame can take hours, even days in some cases. It is now that GPU technology has progressed far enough that raytracing in video games is starting to become possible. Nvidia’s RTX graphics cards are helping to make this a reality, although that is not related to SEUS PTGI.

Raytraced Reflections In Minecraft RTX 1024x576
Raytraced reflections in Minecraft RTX, very similar to SEUS PTGI

What is Path Traced Global Illumination?

Path traced global illumination refers to the usage of raytracing to follow the path of light throughout a scene, in order to achieve global illumination. Global illumination is the effect whereby light can appear to bounce off of a surface, indirectly illuminating other surfaces in a scene. PTGI can make Minecraft appear much more realistic and true to life.

SEUS PTGI Global Illumination
Path Traced Global Illumination visible in SEUS PTGI

SEUS PTGI Features:

  • Fully path-traced global illumination
  • Sunlight Shadows
  • Realistic water shader reflections
  • POM (Parallax Occlusion Mapping)
  • Rain effects (wet surface reflections)
  • Godrays
  • Volumetric Clouds
  • Beautiful sunset
  • PBR (Physically Based Lighting)
  • Motion Blur
  • Bloom
  • Similar to Minecraft RTX, without actually using RTX techniques (and therefore compatible with non-RTX graphics cards)

How to Install SEUS PTGI:

  1. Follow our guide to install Optifine for your Minecraft version.
  2. Download SEUS PTGI from Sonic Ether’s Patreon page.
  3. Open the ‘shaderpacks’ folder for your game.
    • Launch the game and click on Options→Resource Packs→Open Pack Folder.
    • A Windows Explorer, or MacOS Finder window will open in your resource packs folder. Navigate up one folder, and you should see the ‘saves’ and ‘shaderpacks’ folders for your game.
  4. Place the SEUS PTGI shaderpack .zip file into your ‘shaderpacks’ folder.
  5. From the Minecraft home screen, navigate to Options→Video Settings→Shaders…, select the shaderpack that you just installed.

SEUS PTGI Download Links:

SEUS PTGI can only be downloaded from Sonic Ether’s Official Patreon Page.

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