Description

A realistic shader pack for Iris (Minecraft Java) focused on natural lighting, detailed water and long view distances, with support for Distant Horizons.

Features

Sky & weather

• Volumetric clouds with changing weather and cloud coverage
• Directional sunrises and sunsets, auroras, rainbows, rain and lightning
• Morning fog and light shafts

Lighting & shadows

• Soft shadows with adjustable distance (up to 512 blocks) and resolution
• Long-range screen-space shadows for far terrain and Distant Horizons LODs
• Coloured block lighting: torches, lava, soul fire, Nether portals and stained glass tint their surroundings
• Ambient occlusion and contact shadows

Water & reflections

• Three selectable water styles, including an ocean-style surface with curved wave lines
• Caustics, shore foam, refraction and depth-based water colour
• Waves created by the player and boats
• Screen-space reflections on water, glass, wet ground, metals and polished blocks
• Stained glass reflects its own colour

Nether, End & more

• Nether and End portals with a parallax depth effect
• Animated light beams above the End pillars
• Lava with animated flow lines
• Camera effects when leaving water, entering water and burning

Image & options

• Bloom, auto exposure, tonemapping and colour grading
• Depth of field, motion blur and TAA
• Quality profiles (Low / Medium / High / Ultra) and many in-game settings

Distant Horizons

Distant terrain is lit, shadowed and given ambient occlusion. Distant water is supported. How fast far terrain generates depends on the Distant Horizons mod settings, not on the shader.

Requirements

• Iris with Sodium
• A GPU with OpenGL 4.3 or newer (the pack uses compute shaders)
• OptiFine is not supported
• Developed and tested on Minecraft 1.21.1 with Iris 1.8.x. Other versions may work but have not been tested.

Performance

Long shadow distance and the screen-space effects are demanding. If your FPS is low, pick a lower quality profile or reduce the shadow distance in the shader settings.

Credits & Licenses

Nebula Shaders is built on ideas and code from other shader packs. Full credit to their authors:

• Photon by SixthSurge: the coloured light volume, parts of the cloud system, colour grading and water wave approach are based on Photon. Used under the Photon Shaders License; the licence file is included in this download.
• Eclipse Shader: the player/boat wave simulation and the camera effects (leaving water, entering water, burning) are adapted from Eclipse.
• Complementary Shaders by EminGT: the idea behind the parallax Nether portal.

All other features (water styles, lava, reflections, End effects, Distant Horizons support, etc.) are original work for Nebula Shaders. Please support the original authors.

Feedback

Found a bug or have a suggestion? Please open an issue or leave a comment, and include a screenshot and your Iris/Minecraft version.