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This is a massive overhaul of the shader pack. Almost the entire rendering pipeline was rewritten to add a big batch of new features. Compatible with Iris and OptiFine, Minecraft 1.20.1 and current versions. New features Global Illumination (screen-space approximation) + hemisphere sky/ground ambient bounce lighting Screen-Space Ambient Occlusion (SSAO), denoised/blurred Real screen-space reflections (SSR) on water — reflects actual terrain, not just a fake sky color Volumetric fog / light shafts (ray-marched against the shadow map) Improved water/hydrodynamics: Gerstner-style waves, shoreline foam, rain ripples Bloom (proper two-pass blur) + Tone Mapping (Reinhard / ACES / Filmic) + Exposure control Depth of Field and Motion Blur Immersive weather: wet surfaces with rain, extra fog/ripples when raining Celestial phenomena: aurora borealis, twinkling stars, shooting stars, sun/moon halo Render-distance pop-in fade ("geometry fade") to hide chunk edge culling Visual style presets: Vibrant, Cinematic, Realistic, Nocturnal, plus the usual quality tiers (Potato → Super Ultra) Known issues (being worked on) Water: reflections can still look inconsistent or "mosaic-like" over complex geometry (waterfalls over stairs, many overlapping blocks). A fix was applied but it's not 100% perfect yet in every scenario. Player hand / entities / dropped items: since these are rendered through a different pipeline stage than terrain, some post-processing effects (motion blur, ambient occlusion) can occasionally cause them to look slightly off (too dark, semi-transparent, or affected by leftover data from a previous frame). Several fixes have been applied, but if you still notice glitches specifically on the hand, mobs, or other players, please report it with a screenshot. Notes This pack does not use real hardware ray tracing (RTX) — GLSL 1.20 (the language OptiFine/Iris shaders run on) doesn't support compute shaders or BVH acceleration structures. "Ray tracing" here refers to ray-marching techniques (SSR, volumetric light shafts), the same approach used by other well-known Minecraft shader packs. If you hit a shader compile error or a visual bug, a screenshot + which profile you're using helps a lot to track it down.