Luster Shaders

# v5.0b ## Fixed - **Crepuscular rays:** Fixed shader compilation failures when disabled or when blocky clouds are enabled. - **Volumetric fog smoothing:** Corrected fog buffer comments, fixed blur tap spacing to match the fog buffer's resolution, and updated smoothing descriptions across all nine language files. - **GUI visibility:** Fixed missing settings, including entity shadows, vanilla AO, cave fog, motion blur, and Purkinje shift. ## Changed - **Nether fog:** Made turbulent, ember-glowing smoke the only fog model, removing the old flat-glow emission option. - **TAA and CAS:** Made temporal anti-aliasing and sharpening permanently enabled, removing their toggles and intensity sliders. TAAU remains unchanged. - **Coloured light shafts:** Now automatically follow the coloured-shadows setting. - **Sandstorms and ozone:** Removed per-layer toggles; both effects now use their master settings. - **Sun and moon:** Removed vanilla texture options and angular-radius sliders, leaving shader-drawn celestial bodies. - **Cloud settings:** Listed all cloud layers directly on the Sky screen, removing the intermediate cloud submenus. - **GUI cleanup:** Removed an empty Space screen slot and renamed `crepuscularRays` to `crepRays`, fixing single-column screen layouts. ## Technical - **Library cleanup:** Renamed utility includes to `util.glsl`, moved cloud utilities to `clouds/util/`, renamed `encoding.glsl` to `encode.glsl`, and merged checkerboard utilities into `bicubic.glsl`. - **Localization:** Renamed language files to lowercase locale codes and removed obsolete settings from all nine locales.

## v5.0a ### Fixed - **Sky colour space**: the atmosphere scattering LUT is now decoded from Rec.2020 into the pack's working colour space before it is used, instead of being read as if it were already in the display gamut. Previously the sky picked up a shift in hue and saturation (and could wash out / look wrongly tinted) because Rec.2020 primaries were interpreted as sRGB. - The conversion uses the pack's row-vector convention (`v * M`), so the matrix order in `color.glsl` is `rec2020ToWorkingColor (rec2020ToXyz * xyzToWorkingColor)`. ### Technical - Added `rec2020ToXyz`, `xyzToWorkingColor` and the `rec2020ToWorkingColor` macro in `shaders/lib/util/color.glsl`. - Applied the conversion at all six scattering-LUT sample sites in `shaders/lib/atmos/air/atmosphere.glsl` (single-scatter + multi-scatter rays, both the in-scatter and the transmittance/ambient paths).

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