Celestial v3.1

✨ New

• 💎 RTX-style Ray Tracing (optional). A new Ray Tracing menu, off by default, that turns on the full ray-traced look. With it off, Celestial looks and runs exactly as it did before:
  • Real stained glass: windows glow like cathedral glass and throw deep-coloured beams through dusty air and rich coloured light across the floor.
  • Light beams through windows, doors and holes in roofs.
  • Realistic dark rooms: rooms and caves are lit only by the sky they can really see through their openings, plus the light bounced in.
  • Bounce light with colour: sunny floors light the room behind the window, and a red-lit floor tints the walls around it.
  • Glowing blocks as real lights with soft shadows and their own coloured pools.
  • Reflections on polished blocks (quartz, polished stone, glazed terracotta, ice, metal blocks): glowing blocks, coloured light and stained-glass windows shine in polished floors, even ones behind you.
  • Smoothed over time, so it stays clean and steady. Needs Iris 1.6+ and a strong graphics card.
• Coloured shadows. Sunlight and moonlight through stained glass, ice, slime and honey throw vivid coloured light, and god rays through stained glass glow in its colours.
• Coloured Room Glow. Coloured lights fill the whole room with their colour, like LED strips, instead of just lighting a spot beside each light.
• Coloured held lights. Holding a soul lantern, copper torch, sea lantern, amethyst and other coloured lights lights the ground around you in their colour.

💡 Lighting

• The sun now rises in the east, passes straight overhead at noon and sets in the west (Sun Path Angle 0; tilt it again under Sun & Moon if you like).
• Coloured lights are more vivid, so the colour really shows when you place them.
• Coloured light and shadows no longer depend on where you look: lights and walls behind you keep working.
• Ray Tracing: light beams now only fill rooms, halls and caves, not the open air under overhangs, bridges and floating builds.
• Ray Tracing: fixed sheets of light appearing in the air above and below you while flying, and beams flickering in layers across sunlit ground when you jump or climb.
• Fixed streaky lines smeared across walls indoors when the sky showed through a door or window.

🕳️ The End

• Leaving the black hole is now an event: a shimmering wall of bent light closes in as you reach its edge, and crossing it opens the view to the stars with the black hole towering behind you.
• Fixed a glitchy cyan box that filled the screen when flying out onto the rings.

🔧 Fixes

• Unlit redstone torches, empty respawn anchors and dry sea pickles no longer give off coloured light.

🌟 Constellations

• A big clean-up of the sloppier figures across the themes.
• The OG YouTubers line-up has changed, with several new faces and a redrawn logo or two.

⚙️ New settings

• Lighting & Shadows: Coloured Shadow Strength, Coloured Room Glow
• Ray Tracing: Ray Tracing, Rays per Pixel, Ray Length, Sky Occlusion, Bounce Light, Traced Block Light, Ray-Traced Reflections, Reflection Strength, Light Beams Indoors