How to Use

1. Requirements

   • Unity 6 / URP.

2. Import & Setup

   • Import the package into your URP project.

   • Create a new Material and set its shader to:

     Shader → dev505 → RainyWindow.

   • Assign this material to any window mesh.

   • Make sure that on camera, Opaque Texture is On

   

3. Main Controls (Material Properties)

   • Base Color – Tint and overall brightness of the wet glass.
   • Droplet Tiling (_Size) – How dense/large the droplets are.
   • Time Offset (_T) – Offsets animation time (useful for multiple windows so they don’t sync).
   • Distortion Strength (_Distortion) – How much the drops warp the background.
   • Blur Radius (_Blur) – Strength of radial blur behind the droplets.
   • Rain Intensity (_Intensity) – Amount of visible drops (0 = none, 1 = heavy rain).
   • Drop Aspect (X, Y) (_Aspect) – Shape/stretch of droplets (e.g., wider or taller).
   • Blur Samples (_BlurQuality) – Quality vs performance (8–128 samples).
   • Render Sides (_CullMode) – Choose to render both sides, front or back only (useful in case you need to render only one side).

4. Performance Tips

   • Lower Blur Samples and Blur Radius on low-end hardware.
   • Use smaller Droplet Tiling values for distant windows to keep the pattern readable.

That’s it: add the material to your glass, tweak parameters, and you get Rainy Window.