AuraLite Shaders

🆕 What's New in v1.0.5 — Expanded Localization

Version 1.0.5 is a localization-focused release that adds 10 new in-game languages, bringing the total to 69 supported locales. No shader logic, profile defaults, or rendering behavior was changed — this is a pure translation / metadata update on top of v1.0.4.

🌐 New Languages

The following fully-translated .lang files were added (every option name, value label, profile name and tooltip — 289 keys each, 100% key parity with the English source):

• As with all non-English locales, the in-game ⚠ Translations may contain errors notice applies — some strings in rarer languages may be imperfect; compare with the English original if anything looks off.

🆕 What's New in v1.0.4 — Profile Rebalance, Translucent Blocks & Glass Rendering

Version 1.0.4 delivers a full quality-profile rebalance for smoother progression, introduces proper translucent block rendering for ice and glass, adds a dedicated Iris/Oculus translucent terrain pass, and fixes a cross-vendor GLSL compatibility issue.

🔄 Full Profile Rebalance

All six quality profiles (VERY_LOW → EXTREME) have been rebalanced for a smoother, more logical feature progression:

🧊 Split Ice & Glass Block Rendering

• Regular ice (minecraft:ice, block ID 10005) now renders with its actual texture and semi-transparency instead of being fully opaque. Transparency scales with the WATER_TRANSPARENCY setting (Clear / Balanced / Deep).
• Packed ice, blue ice, and frosted ice (block ID 10007) are now rendered opaque with texture — distinct from regular ice so the visual difference is clear.
• All glass blocks and panes (block ID 10008), including every stained-glass variant and tinted glass, now render with their actual texture and proper transparency. Glass opacity scales with WATER_TRANSPARENCY. This eliminates the old "invisible glass" problem where glass blocks disappeared against bright skies.
• Both ice types and glass are handled by the new gbuffers_terrain_translucent pass, ensuring correct rendering on Iris/Oculus split-translucent pipelines.

🪟 New Translucent Terrain Pass (gbuffers_terrain_translucent)

• A new gbuffers_terrain_translucent.fsh / .vsh shader pair was added. This pass handles water, ice, glass, and nether-portal blocks in a single Iris/Oculus-compatible translucent terrain path.
• Mirrors the existing gbuffers_water.fsh logic so translucent blocks render identically regardless of whether the loader uses a unified or split translucent G-buffer path.
• Nether portal plasma, ice Fresnel, glass opacity, and water Fresnel/ripples all route through this pass.

🛠️ GLSL Compatibility Fix

• Replaced all fma() calls with direct multiply-add expressions across every shader file. The fma() intrinsic, while correct on most modern GPUs, caused compilation failures on certain drivers (particularly older Intel iGPUs and some Mesa versions). The replacement a * b + c expressions are mathematically equivalent and compile universally.

🆕 What's New in v1.0.3 — Anti-Aliasing & PBR Performance

Version 1.0.3 adds configurable spatial anti-aliasing (FXAA / SMAA) and a PBR render distance control that skips expensive Cook-Torrance specular calculations on distant terrain.

🖼️ Spatial Anti-Aliasing (FXAA / SMAA)

• SPATIAL_AA_MODE — new toggle in the [Post-Processing] menu with 3 modes:
  • Off — no spatial AA (TAA-only or nothing).
  • FXAA — Fast Approximate AA. Sobel gradient-directed edge detection with conservative blend weights. Cheap and effective.
  • SMAA — Subpixel Morphological AA. Combines luminance Sobel gradient with depth discontinuity detection for superior edge detection on geometry where luma contrast is low. Slightly more expensive than FXAA.
• Both modes operate in linear space before tone mapping and are conservative enough to avoid washing out the image (max blend weight 0.15–0.18, high edge thresholds).
• Freely combinable with TAA (composite1 pass) for temporal + spatial smoothing.
• Added to all 6 quality profiles: VERY_LOW=Off, LOW/MED=FXAA, HIGH/ULTRA/EXTREME=SMAA.

⚡ PBR Render Distance

• PBR_DISTANCE — new setting in the [Lighting Settings] menu with 4 levels:
  • Near (16m) — PBR specular only on very close surfaces. Maximum GPU savings.
  • Standard (48m) — balanced distance. Default for LOW/MED profiles.
  • Far (128m) — extended range. Default for HIGH/ULTRA profiles.
  • Unlimited — no distance limit. EXTREME profile only.
• Beyond the fade range, the entire Cook-Torrance BRDF block (GGX distribution, Smith geometry, Fresnel-Schlick) is completely skipped via early-out — no wasted ALU on sub-pixel specular.
• Fade is smooth (smoothstep between start and end distance) to avoid visible pop-in.

🌐 Localization

• Full English and Russian localization for both new settings (option names + value labels).
• Other language files fall back to English labels.

🌿 Foliage Subsurface Scattering (also finalized in v1.0.3)

• FOLIAGE_SSS — toggle in the [Foliage Settings] menu. Enables light bleeding through leaves and plants when looking toward the sun, plus a soft wrap term for the shaded side. Controlled per-profile (enabled from MED upward by default). Uses material ID tagging in gbuffers_terrain and a dedicated SSS pass in composite.fsh.
• Added to all quality profiles (VERY_LOW → EXTREME) with the !FOLIAGE_SSS or FOLIAGE_SSS flag.
• Full English + Russian localization strings added.

🆕 What's New in v1.0.2 — Foliage Subsurface Scattering

Version 1.0.2 adds realistic subsurface scattering (SSS) for vegetation. Leaves, grass, and plants now look more translucent and alive when light shines through them.

🌿 Foliage Subsurface Scattering (FOLIAGE_SSS)

• New toggle in the [Foliage Settings] menu.
• Light bleeding from the back side of foliage + soft wrap term on the unlit side.
• Enabled from MED profile upward by default (disabled on VERY_LOW/LOW for maximum FPS).
• Integrated with existing PBR pipeline using material ID tagging (matID 10001–10004) in gbuffers_terrain.
• Full English and Russian localization.

This is a focused, low-cost visual enhancement that makes forests and plants feel much more natural under direct sunlight.

🆕 What's New in v1.0.1 — Stability, HDR Bloom & Photographic Tone Mapping

Version 1.0.1 is a focused hotfix on top of v1.0.0 that addresses five edge-case rendering issues and introduces a new cinematic tone-mapping curve with lightweight HDR bloom.

🛠️ Bug Fixes

• TAA history acceptance threshold. Added historySample.a < 0.99 guard in composite1.fsh so uninitialised or stale history buffers (e.g. right after shader reload or resolution change) are rejected instead of causing ghosting.
• Vibrancy math. applyVibrancy in final.fsh now correctly handles negative saturation values — oversaturation works as intended rather than relying on undefined GLSL mix extrapolation followed by hard clamping.
• SSR normal NaN guard. Added length(N) > 0.5 check before traceSSR() so invalid normals from edge pixels are silently skipped instead of producing black reflections.
• SSR near-field trace precision. Minimum raymarch step lowered from 1.0 to 0.3 view-space units, dramatically improving hit rate on close surfaces (ripples, shallow pools, wet stone).
• Meteor moon-brightness curve. gbuffers_skybasic.fsh now uses cos²(phase × π/8) — identical to getMoonPhaseBrightness() in composite.fsh — so moon washout is physically consistent.

🎨 Visual Enhancements

• HDR Bloom (v1.0.1). Cheap single-pass 3×3 neighbour blur for overbright pixels (luminance threshold 0.75). Naturally affects sun/moon disks, lava, portals, bright specular highlights, and torches — without smearing the entire scene or requiring extra render targets.
• Photographic (AgX-like) Tone Mapping (v1.0.1). A new CONTRAST = 4 option in final.fsh provides a sigmoidal tone curve with natural highlight chromatic attenuation, soft toe, and lifted blacks — giving a cinematic, non-clipped look that keeps foliage saturation under control while handling extreme brightness gracefully.
• EXTREME profile updated. Now uses CONTRAST=4 (Photographic/AgX-like) instead of CONTRAST=3 for cinematic highlight handling.

🆕 What's New in v1.0.0 — Meteor Showers & Finalized Reflection Pipeline

Version 1.0.0 builds on the volumetric aurora work from v0.3.0 and introduces the first v1.0.0 source snapshot in this repository. The update adds a physically-inspired meteor system to the night sky, finalizes the modern SSR path for reliable Iris compatibility, and refreshes the documentation so the project now correctly points to the shaders v1.0.0/ folder.

☄️ Physically-Based Meteors / Falling Stars

• True great-circle sky arcs. Meteors are rendered as moving arcs on the celestial sphere instead of flat 2D streaks, so showers converge toward a shared radiant like real meteor photography.
• Ablation-based brightness curve. Each meteor rises, peaks, and fades with a bell-shaped light curve inspired by atmospheric entry.
• Blackbody plasma colouring. Meteor heads are tinted with the same Kelvin-based colour pipeline used by AuraLite's sun/moon lighting, giving physically consistent warm-to-white fireball tones.
• Moonlight washout and weather attenuation. Faint meteors are suppressed by bright moon phases, rain, and daytime sky brightness, improving realism and avoiding visual clutter in poor visibility.
• Persistent trains on bright fireballs. The strongest events leave a short-lived glowing ionization trail, including a subtle green oxygen-style tint on the lingering train.
• Available in both Overworld and The End. Overworld meteors respect moonlight and atmosphere; End meteors render against the permanent night sky without moon washout.

🪞 Finalized v1.0.0 SSR / Water Reflection Path

• colortex6 fully removed from the reflection workflow. The older MRT export path was retired; final.fsh now reads normals directly from colortex2 and roughness from colortex1, matching AuraLite's already-working PBR data path.
• Depth-based water-surface detection. Water is identified by comparing depthtex0 and depthtex1, making reflections robust on Iris paths where water G-buffer writes may be inconsistent.
• More stable water normals. Reflection normals are reconstructed from neighbouring depth samples and then perturbed with coherent world-space ripple gradients, reducing faceting and torn reflections.
• Cleaner post-pass reliability. The reflection pipeline now lives entirely in the final post-processing pass, simplifying the frame graph and avoiding loader-specific MRT issues.

🎛️ New Sky Settings & Profile Integration

• New configurable options: SHOOTING_STARS, SHOOTING_STARS_FREQUENCY, and SHOOTING_STARS_BRIGHTNESS.
• Shooting stars are disabled on the lightest presets and enabled from MED upward through the normal profile system.
• English and Russian UI text was expanded for the new night-sky controls, while other language files continue to fall back safely.

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