: Replaces the default flat skin textures with shaders that react better to light sources, often used to achieve a more "realistic" or soft anime aesthetic.

Lighting is arguably the most critical element of a good render. In Koikatsu , shaders generally fall into two categories: and PBR (Physically Based Rendering) . XUKMI shaders, along with default Shader Forge and KKUTS, belong to the NPR system . Traditionally, these NPR shaders only support a single directional light source. However, XUKMI shaders are a notable exception, as they support multi-point lights and spotlights , providing much greater flexibility for complex scene setups.

Early versions (v1.0–v1.3) were simple—a color inverter and a basic scanline generator. However, by version 2.0, the suite exploded in complexity, introducing multi-layered noise, pixel sorting, and real-time CRT emulation.

Turn your cozy suburban home into an abandoned VHS recording. With Xukmi_PixelSorter and Xukmi_VHS_Overlay, The Sims 4 transforms into an eerie, analog horror experience. Watch your Sim smile while her face glitches into a pixel waterfall.

Koikatsu!, tutorial, GirlsBandCry / Xukmi Shaders & Haruka PPE

Before diving into the specifics of Xukmi FX, it is essential to understand the core role of shaders in modern computer graphics.

Developed by the modder xukmi , these custom ShaderLab and HLSL scripts fix long-standing engine limitations regarding how anime models interact with light. By overriding stock code, they enable features like matcap shadowing, advanced tessellation, and specialized screen-space post-processing.

(or similar mod managers) to ensure that the files are placed in the correct directories within your Koikatsu installation folder.

| Effect | Description | Uniforms | |---------------|--------------------------------------------------|-------------------------------------------| | | Edge detection + blur + additive blend | u_Intensity , u_Color , u_Threshold | | Wave Distortion | Sine-based UV displacement | u_Frequency , u_Amplitude , u_Speed | | Pixelate | Blocky retro look | u_BlockSize | | ChromAb | Red/blue channel offset | u_Strength , u_Angle | | Ripple | Expanding ring distortion (touch-reactive) | u_Center , u_Radius , u_Time | | HeatHaze | Refraction-like warp | u_Intensity , u_NoiseScale |

: These shaders are frequently used alongside other popular visual mods like Graphics or Post-Processing Stack (PPS). Installation & Usage