IBL Vegetation Shader

This is a specific shader intended for the use on billboarded foliage. It is mostly a subset of the Standard shader with tinted specular.

This page gives technical definitions.  For usage guide see: PBR - Using Standard Shader

Shader Name 

L2IBLVEGETATION

Configuration

Albedo Map

• Map: Enable or Disable the base Albedo Map.
• UV: UV_A, UV_B, UV_C, UV_D or WorldPlanar

AO Specular Map

• Map: Enable or Disable the AO Specular map.
• UV: UV_A, UV_B, UV_C, UV_D or WorldPlanar

Leaf Rough Map

• Map: Enable or Disable the Leaf Rough map.
• UV: UV_A, UV_B, UV_C, UV_D or WorldPlanar

Normal Map

• Map: Enable or Disable the Normal map.
• UV: UV_A, UV_B, UV_C, UV_D or WorldPlanar
  

Translucency

Translucency allows for a simplified version of back-lighting, the effect is limited to the leaf mask.

• Translucency: Enable or Disable Translucency on Albedo Maps.

General Configuration

• Receive Shadows: Enable or Disable receiving shadows.
• Billboard: Enable Billboarding with either default or pointy normals.
• Vertex Color: Disable, AlbedoMultiply. AlbedoOverlay, AlbedoMultiply (Mask by Albedo Alpha), AlbedoOverlay (Mask by Albedo Alpha)
• Vertex Alpha: Disable, FakeShadows or DetailBlend

Parameters

Base_Material

The Base Material parameter section allows the setting of static values when the map for one of the following is disabled in the Shader Configuration.

• Albedo (Color)
• AO
• Specular
• Metallic
• Roughness

UV_Scale

This dialogue allows the scaling of the selected UV for any maps present.

Material_Adjust

This section allows the adjustment of final output of the material. 

• AlbedoTint
• ReflectionAt0Angle
• Specular: 1.0 is recommend default for most materials. For natural materials this may need reduce the specular input in general depending on the nature of your specular maps.
• SpecularTint: This is a colour allowing the tinting of specular reflections. To improve the look of vegetation this defaults to a slightly green colour. The tinting is restricted to the leaf mask.
• Metallic: Adjust overall Roughness, lower than 0.5 makes surfaces less metallic. Above 0.5 makes surfaces more metallic.
• Roughness: Adjust overall Roughness, lower than 0.5 makes surfaces smoother. Above 0.5 makes surfaces rougher.
• NormalShadowInflunce: Adjust the amount of influnce the normal map has on shadows cast onto this surface.

Translucency

• Power: Adjust how broad or refined the effect is.
• Scale: Adjust the overall strength of the effect.

Textures