I found couple posts / questions about glass (or window if you like) material in Unreal Engine 4, so I decided to make easy-to-use templates. Features are described below. Hope you like it.

Glass_preview

I use 2 master materials: Glass_Master and GlassShattered_Master to define various glass materials.

Glass_Master uses additional dirt layer (optional)

Parameters you can control:

• Color // Controls glass tint
• Opacity // Controls opacity
• Refraction // Similar to refractive index. I don’t use physical-based values for glass (~1.490 – 1.492) since, in my opinion, it gives unrealistic results for thin surface (image was too distorted).
• Roughness // A constant that defines how rough is the surface.
• SpecStrength // Controls reflections intensity (based on Roughness value)
• Texture tile // Glass/Normal map tile
• UseNormal // Must be enabled if you want to use Normal Map
• NormalMap
• HeightRatio (only in GlassShattered_Master) // controls BumpOffset
• GlassTexture (only in GlassShattered_Master) // It’s input for RGB texture. R channel blends with glass color, G channel controls opacity, B channel – is used for bumpOffset.
• Dirt color // Color of a dirt layer
• DirtIntensity // 0.0 – no dirt layer, 1.0 – maximum dirt map intensity (based on texture)
• DirtMask // Texture used to create dirt. It uses only red channel
• DirtScale // Controls DirtMask tilling

GlassShattered_Master doesn’t have dirt layer.

Example Material Instanced in the package:
– Clean
– Dirty
– Colored (blue, red, etc)
– Milky
– Shattered 1
– Shattered 2

Did you like this pack?

Check out also the Advances Glass Pack (link)
YouTube: (link)