ABZA Shader

A shader pack made for the ABZA modpack (Minecraft 1.20.1, Forge), built on Sundial Lite by GeForceLegend. Inspired by Complementary and Photon.

The pack is dedicated to the ABZA modpack. It runs in other 1.20.1 Forge setups with Oculus, but the planets and their skies come from the modpack; see "Outside the modpack" below.

Presets

Gallery

What it adds to Sundial Lite

• Ad Astra's sky: the sun, moon and planets Ad Astra draws are the visible ones, and the shader's light, shadows and light shafts come from that same sun. Water reflects the sun's square shape. Ad Astra's coloured stars keep their colours, and on airless worlds they stay visible by day.
• Planet fog in each biome's own fog colour, from the ground to the horizon, Distant Horizons terrain included.
• Exposure modes (Post processing > Exposure): Steady (the default) follows the time of day, the weather and the world, never where you look; Metered follows the brightness on screen; Off keeps one exposure per world. Dark worlds stay dark in every mode.
• Glowing ores, vanilla and modded: only the ore-coloured pixels glow.
• Shading where blocks meet: crease shading on top of screen-space ambient occlusion, and vanilla's block corner shading. Ambient occlusion and ray-traced bounce light each have a switch (Lighting > Ray tracing).
• Sunshine sheen: a soft sunlit highlight on ground and grass, plants that glow when lit from behind, and darker shade.
• Speed: clouds and light shafts are computed at half resolution and smoothed over frames, reflections reuse the clouds already on screen, and Umbra skips its shadow pass. Costly settings go much lower than in Sundial, with separate switches for entity, player and block-entity shadows.
• Mod fixes: no ghost rings when aiming TaCZ optics, no mirror glare on held glass, and Distant Horizons blocks glow by their light level.

Outside the modpack

• The large square sun, the moon and the planets in Earth's sky come from the modpack's Ad Astra sky files, not from the shader. Without them, Earth shows Minecraft's usual sun and moon, and the shader lights the world from those.
• Interloper, Cinder, Eden, Umbra and their orbits exist only in the modpack. The Moon and the Earth and Moon orbits come with Ad Astra.
• Dimensions from other mods use the pack's base settings: Sundial's look with ABZA's shared changes. The Nether and the End use Sundial's own.
• Glowing ores cover the modpack's ore mods; ores from other mods render normally.

Known issues

• Taking a TaCZ gun for the first time can show long dark spikes under the terrain. Reloading shaders (F3+R) fixes it; stock Sundial does it too.
• Outside the modpack, water reflects a square sun about twice the size of Minecraft's sun.
• Zombie Awareness's blood marks aren't drawn with shaders on.

Credit

Sundial Lite is made by GeForceLegend and released under the GNU General Public License v3.0 (GitHub, Modrinth, CurseForge). ABZA Shader is an independent fork, not affiliated with or endorsed by GeForceLegend, released under the same licence. The source is on GitHub.