This repository is a Unity shader asset package (com.llcheesell.led_screen_shader) that provides a high-fidelity, multi-pipeline HLSL shader for simulating LED displays. It supports both HDRP and URP pipelines (with a built-in fallback marked as unsupported), featuring subpixel RGB masking, procedural pattern generation (honeycomb, stripe, rectangle), screen-space density fade for anti-aliasing, cabinet grid with brightness variance, hotspot/glow effects, and TAA ghost prevention via motion vector invalidation. The package includes a custom material inspector GUI with foldable property sections, a migration tool to automatically detect and upgrade legacy Shader Graph materials, sample scenes with post-processing volumes, and detailed textures. The shader is designed for real-time rendering of realistic LED panels in architectural visualization, broadcast, or simulation contexts.