AuraLite Shaders

🆕 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.