Advanced

Controls the weight of indirect illumination base rays, i.e. the effect of global illumination on the base shading of the Toon shader. By default, the Toon shader has indirect illumination disabled with a Base Indirect Scale of 0. This is frequently desirable so that toon shading remains flat, however, the Base Indirect Scale can be increased to enable the effects of global illumination.

 

Controls the weight of indirect reflection rays, i.e. reflections of other surfaces (including self reflections) — this does not include specular reflections, i.e. reflections of light objects. By default, the Toon shader has indirect reflection disabled with a Reflection Indirect Scale of 0. This is frequently desirable so that toon shading remains flat and looks less like a traditional PBR style, however, the Reflection Indirect Scale can be increased to enable this here.

 

Offsets the transparency level of shadows that are cast on a tone mapped object. Note, the overall tone mapping behavior when in shadow is controlled by the Base Tonemapping Mode.

By default, using a value of 0, the shadow opacity is determined by each light's Shadow Transparency.

Values below 0 reduce the shadow opacity with -1 resulting in no cast shadows.

Values above 0 increase the shadow opacity with +1 forcing all shadows to their darkest tone mapped value.

In the examples below, two fully opaque bars cast a shadow on the objects below and the Toon shader's Base Shadow Opacity is adjusted to demonstrate the effect shadow transparency has on each Tonemap Mode. On the right side is what each Tonemap mode looks like at the default value — in a scenario with opaque shadows, note that both Tonemap modes look identical and only look different when the shadows become transparent. For more detailed information on the behavior of each mode, please see the Base Tonemap Mode section of the Toon shader.

 

In the next example, a large transmissive plane casts a colorful stained glass window effect on the objects below. On the right side is what each Tonemap mode looks like at the default value — in a scenario with shadows cast from a transmissive object, note that the two modes look different from each other. The Light and Opaque Shadow mode takes on the color of the stained glass while the Light and Shadow mode does not.

 

Controls the transparency level of shadows cast on the Specular Reflection layer of the Toon shader, including self shadows.

In the examples below, two fully opaque bars cast a shadow on the objects below and the Toon shader's Reflection Shadow Opacity is adjusted to demonstrate the effect shadow transparency has on each Tonemap Mode. On the right side is what each Tonemap mode looks like at the default value — in a scenario with opaque shadows, note that both Tonemap modes look identical and only look different when the shadows become transparent. For more detailed information on the behavior of each mode, please see the Base Tonemap Mode section of the Toon shader.

 

In the next example, a large transmissive plane casts a colorful stained glass window effect on the objects below. On the right side is what each Tonemap mode looks like at the default value — in a scenario with shadows cast from a transmissive object, note that the two modes look different from each other. The Light and Opaque Shadow mode takes on the color of the stained glass while the Light and Shadow mode does not.

 

This setting controls what is reflected when the Reflection Trace Depth is exceeded.

• Base: The final reflection color is taken from the base color of the toon shader.
• Environment: The final reflection is taken from an available environment shader (like a dome light) or will be black if there is no environment.

When trace depths are low or an object's shape creates many self reflections and this parameter can have an enormous difference on the final look. Increasing the reflection trace depths will fix this issue, resulting in more realistic dark reflections, but this comes at the expense of render times. Sometimes setting Reflection End Color to "Base" is enough to produce a very similar darkened result to increasing the trace depths but avoids increased render times.

 

Controls how the reflection layer observes energy compensation from the following options:

• Use Fresnel: Layering is weighted by the albedo weight multiplied by fresnel. This matches other uber shaders like the Standard Material.
• No Fresnel: Reflection layer weight is based on the Reflection Weight. This can result in the reflection layer completely overpowering the rest of the shader at the default Reflection Weight of 1.
• None: No energy compensation is used, the base and reflection layers are added together.