Polybrush Rainy Puddles Shader for Unity Built-in, Universal and HD Render Pipeline.
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Easy blend up to 2 different materials and 1 animated water layer on one mesh with their Base color, Normal, Metallic, Smoothness, Height map and Ambient occlusion.
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Available at the Unity Asset Store for Built-In, URP and HDRP.
Built-In and URP :
HDRP :