Two lightweight URP neon shaders for animated emissive signs and tubes. Glowing, pulsing neon with instant on/off switching. Built for PC, mobile, VR, and Steam Deck.Built for the Universal Render Pipeline (URP) 17 or newer on Unity 6. Not compatible with the Built-in Render Pipeline or HDRP. Requires URP Post-processing with Bloom enabled for the glow. Tested with Forward and Forward+ rendering paths. Supports the SRP Batcher, GPU Instancing, and single-pass instanced VR.Custom URP Lit neon shaders for emissive signs, logos, tubes, and cyberpunk-style props. Everything is customizable: base color, HDR emission color and intensity, pulse speed, flicker amount, off-state color, smoothness, and render face (one or two sided).Two variants are included:Prebuild Switchable: on/off compiled out with a shader keyword (zero runtime branch).Runtime Switchable: on/off driven by a uniform, so you can flip it per object from C# with no batching breaks and no first-switch compile hitch.No textures, no material maps, no scene setup. Suitable for any genre that needs neon: cyberpunk, arcade, retro, sci-fi, horror, or urban night scenes.Important: the glow relies on the default URP Bloom post-process. Add a Volume with Bloom enabled to get the neon look. Without Bloom the surface is still emissive but will not visually bloom.2 hand-written URP shaders (Shader Model 3.5).Render pipeline: URP only (not Built-in, not HDRP).Passes: Forward, ShadowCaster, DepthOnly, DepthNormals (casts and receives shadows, works with SSAO and depth-based effects).SRP Batcher compatible, GPU Instancing, single-pass stereo (VR).Pulse and flicker animated on the GPU: no per-frame C# cost.Zero textures and zero samplers: minimal memory and bandwidth.One and two-sided rendering with correct two-sided lighting.Requires the default URP Bloom post-process for the glow.Performance(measured on AMD Ryzen 7 9800X3D, NVIDIA RTX 4090, DDR5-6000 RAM, 1500 instanced objects):Standalone build: ~1250 FPS with standard URP Lit, ~1650 FPS with the neon shader.Unity Editor: ~350 FPS with standard URP Lit, ~400 FPS with the neon shader.Platform support:Windows, macOS, Linux, Android, iOS, consoles, VR, Steam Deck.WebGL: supported only under certain conditions (WebGL 2 or WebGPU, aggressive shader keyword stripping, and a cheap Bloom setting). Heavy shadow and light variants can bloat load time.
