Custom Toon Shader (Shader Graph/HLSL)

Description

This shader is the Master Environment Shader for a stylized game titled Burglar Battle, a 4-player split screen dungeon escape game.

The shader was inspired by shaders from Telltale Games where outlines are black in light but white in shadows (inverted).

For the outlines, a workflow was authored in Adobe Photoshop using Adjustments and Filters to create outlines from Ambient Occlusion textures.

A video directed guide for this shader can be viewed here.

The parameters and directions are as follows:

• Add Texture? – Activate only if adding a texture. Deactivate if a texture is not used.
• Triplanar? – Activates automatic Triplanar feature. This feature will enable automatic scaling, tiling of textures and noises and projection axis settings.
• Texture – Textures should be added here. Textures should have black details and white negative space.
• Texture Tiling – Tiling of the texture in the X and Y axes.
• Texture Offset – Offset of the texture in the X and Y axes. This can also be used for offsetting or moving textures with time.
• Triplanar Texture Rotation – Rotation of the Triplanar Projector in degrees for the X, Y and Z axes. This will rotate the texture ONLY when the Triplanar? parameter is activated.
• Shadow Texture Tint – Tints the colour of the texture in shadow.
• Ambient Shadow Colour – Adjusts the ambient colour of shadows.
• Object Colour – Adjusts the object’s original colour. Adjusting this parameter may seem subtle as light colour is added to it.
• Smoothness – Adjusts the smoothness of the material. This will alter the specular size of the material.
• Specular – Adjusts the Specular Colour of the material.
• Specular Dots Amount – Adjusts the number of Half-Tone Dots in the specular portion of the material.
• Spot Shadows – Activate to render shadows for spot and point lights.
• Add Highlight? – Activate to add (fresnel) highlights.
• Highlight Value – Adjusts the highlight amount.
• Highlight Colour – Adjusts the highlight colour.
• Add Mask? – Activate to add a noise mask.
• Mask Scale – Adjusts the scale of the noise mask.
• Mask Value – Adjusts the noise amount of the mask.
• Mask Colour – Adjusts the colour of the mask.
• Mask Outline Amount – Adjusts the outline width of the mask.
• Mask Outline Steps – Adjusts the number of steps for the outline.
• Mask Outline Colour – Adjusts the colour of the outline.
• Inverted Outlines? – Makes the outlines semi-transparent and inverts the colour while in light.
• Mask Offset – Offset of the noise mask in the X and Y axes. This can also be used for offsetting or moving noise masks with time.