Glass Shader

The Glass shader renders windows and other glass objects, imparting refractive, tint, fog, and cracking effects for both breakable and non-breakable glass objects. Use the Illum Shader instead if you require non-refractive effects for non-breakable glass objects.

Here are a few things to keep in mind when using the Glass shader:

• Ambient diffuse lighting from cube maps isn’t taken into account.
• The shader uses the sky color exclusively for all ambient lighting.
• Except for the sun, all deferred lights don’t affect transparent glass objects.
• The shader can’t receive sun shadows.

Shader Parameters

Back light scale
Controls the amount of light that gets through the glass.
Default value: 0.5

Blur Amount
Controls the amount of blur.
This parameter requires that the Blur refraction – PC Only shader generation parameter is enabled.
Default value: 0.5

Bump Map Tiling
Adjusts tiling of the bump map independently from diffuse.
Default value: 1

Bump Scale
Sets the reflection and refraction bump scale.
Default value: 0.005

Cloudiness Masks Blur
Applies blur to just cloudy areas.
This parameter requires that the Tint map – Tint/Gloss/Spec shader generation parameter is enabled.
Default value: 0

Cloudiness Masks Gloss
Makes cloudy areas less glossy.
This parameter requires that the Tint map – Tint/Gloss/Spec shader generation parameter is enabled.
Default value: 0.5

Fog color
Sets fog color.
This parameter requires that the Depth Fog shader generation parameter is enabled.
Default value: 255,255,255

Fog cutoff end depth
Sets the distance, in meters, after which fog doesn’t get any stronger.
This parameter requires that the Depth Fog shader generation parameter is enabled.
Default value: 20

Fog density
Sets fog density.
This parameter requires that the Depth Fog shader generation parameter is enabled.
Default value: 1

Indirect bounce color
Sets the amount of indirectly bounced color.
Not used if the Depth Fog shader generation parameter is enabled.
Default value: 136,136,136

Tint Cloudiness
Adjusts the cloudiness of tinted areas.
Default value: 0

Tint Color
Applies a tint color to the glass.
Default value: 255,255,255

Shader Generation Parameters

Use Diffuse map
Enables diffuse map for dirt, and so on. Requires alpha channel.

Environment map
Enables environment map as a separate texture.

Tint map – Tint/Gloss/Spec
Enables the RGB spec map to control tinting in red channel, cloudiness in green channel, and specular in blue channel.

Use Tint Color Map
Enables the Tint Color map. Used for multicolored glass, which goes in the custom Tint Color map slot.

Blur refraction – PC Only
Enables the blurring of objects seen through the glass.

Depth Fog
Enables depth fog behind the glass surface.

Disable Lights
Disables the reflection of lights.