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What's new FeatherLite V1 - Changelog ========================== FeatherLite V1 is a major remake of FeatherLite Shaders v0.1 The pack was reworked from a realistic lighting style into a stylized one, several long-standing bugs were fixed, and the cost per frame was reduced. Based on FeatherLite Shaders v0.1 by resurrect5 Remake by AGAIN resurrect5 big props to myself lol. NEW LOOK (stylized remake) -------------------------- + Soft 3-step toon lighting replaces smooth realistic gradients + Shadows shift toward cool purple-blue instead of just darkening + Warmer sun, blue-purple sky ambient, warm ground bounce + Stronger split toning: cool shadows, warm highlights + Higher color saturation (1.28) and saturated block colors + Subtle ink-style outline on silhouettes and depth edges, fading with distance (new option: OUTLINE_STRENGTH) + Vignette slightly stronger + Realism features turned off by default: normal bump, per-face tilt, sky reflection, wrap lighting; micro detail halved + Richer sky gradient: deeper blue overhead, lighter hazy horizon, faint warm horizon glow toward the sun + Slower, softer clouds (speed 0.35, coverage 0.55) BUG FIXES --------- * Shadows moving/sliding when walking or looking around World position was camera-relative but used as absolute, so shadow lookups, fog distance, lightning distance and per-block variation shifted with your position. Terrain, water, entity and weather vertex shaders now add cameraPosition. (Bug was present in v5.5.) * Shadow map and lookup used different warps shadow.vsh now applies the same radial warp as the lookup. (Present in v5.5.) * Leaves, grass and fences casting solid square shadows shadow.fsh was empty; it now discards transparent pixels (cutout alpha). * Shadow acne (diagonal stripe patterns on leaves and terrain) Added a normal-offset bias scaled to the local shadow texel size. * Shadow edge grain and crawling The dither was tied to screen pixels. The kernel is now a fixed pattern, and shadow taps were raised to 8 to keep edges smooth. * Sky rotating against the camera The sky dome vertices skipped the camera rotation. They now go through the model-view matrix first. * Flat navy slab below the horizon (very visible on low render distance) Replaced with a hazy horizon color that darkens naturally at night. * Hard white cloud stripe at the horizon Clouds now fade out near the horizon and come in higher up. * Grainy block textures Removed the fine per-pixel noise layer from block shading, lowered bump and face-variation strength, and the bump now uses the real atlas texel size instead of a hardcoded 1/256 step. Bump also fades out with distance and is clamped against high-contrast texels. * Dark, flat lighting Higher ambient strength (0.90) and ambient floor, ambient no longer crushed under cover, sunlight can reach through leaf gaps, exposure 1.10, shadow darkening reduced, contrast reduced to stop crushing darks. PERFORMANCE ----------- Notes: these are design changes, not measured benchmarks. Test on your own hardware. + Ambient occlusion skips its kernel on pixels beyond its range (the result was already faded to nothing there, so output is identical) + Coloured shadows off by default (they cost up to 3 texture reads per tap on shadowed pixels) + Normal bump off by default (saves 4 texture reads per fragment) + Bump fades out with distance (saves reads on far geometry) + Outline only runs within a limited distance, and shares the depth read used by AO + Bloom reuses its centre sample + Sun and moon directions computed once per fragment instead of 2-3 times + Shadow kernel and AO kernel reduced to 6 samples (shadow later raised to 8 for quality; see fixes) + Godray sky test restored, unnecessary duplicate work removed + End galaxy is no longer drawn twice; END_COMPOSITE_OVERLAY (new option, off) re-enables the old overlay + Shadow distance 80 -> 72 + New Ultra-Lite profile (AO, godrays, bloom, outline, ripples and frost off) NEW OPTIONS ----------- + OUTLINE_STRENGTH Ink outline strength (0 = off) + END_COMPOSITE_OVERLAY Re-enable the old End galaxy composite overlay CHANGED DEFAULTS ---------------- v5.5 V1 AMBIENT_STRENGTH 0.45 0.90 SUN_STRENGTH 1.20 1.05 TONEMAP_EXPOSURE 0.90 1.10 SATURATION 1.04 1.28 CONTRAST 1.12 1.10 SHADOW_TINT_AMOUNT 0.35 0.80 VIGNETTE 0.06 0.10 BUMP_STRENGTH 1.60 0.00 FACE_VARIATION 0.07 0.00 MICRO_DETAIL 0.80 0.50 SKY_FRESNEL 0.12 0.04 WRAP_LIGHTING 0.04 0.00 SHADOW_TAPS 8 8 AO_SAMPLES 8 6 GODRAYS_SAMPLES 8 6 SHADOW_COLORED on off shadowDistance 80 72 CLOUD_COVERAGE 0.48 0.55 CLOUD_SPEED 0.75 0.35 TRIED AND REJECTED (during development) --------------------------------------- - 2-tap texture bump: it looked equal on smooth ramps but measured about 50% gradient error on real block textures and leaned every normal toward the brighter side. Kept the 4-tap version. - Cheaper hash-based replacements for underwater shimmer, micro detail, face variation, water waves, rain ripples and End sky layers: they caused visible artifacts (hard squares, grid edges, stripes, flatter water). Reverted. - Godrays without the sky depth test: bright ground (snow, sand) cast rays. KNOWN ISSUES ------------ - At low render distance the end of loaded terrain is still visible (game chunk limit). FOG_INTENSITY helps blend it. - WET_GLOSS does nothing (inherited from v5.5) - Night, rain, Nether, End and underwater have had less testing than daytime overworld - Profiles set their own exposure and contrast, overriding the default values - The block-bump option relies on Iris providing atlasSize; otherwise it assumes a 256px atlas TECHNICAL --------- - All shader stages validated with Khronos glslang (0 errors) after inlining Iris includes - All options in shaders.properties checked against lib/settings.glsl - Not benchmarked and not tested on a wide range of GPUs or Iris versions