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This article explains the settings and values for the Corona Multi Shader in Cinema 4D.

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Overview

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The Corona Multi Shader can be used to create a single material, which will show shows randomized textures (or solid colors) on each object (formally known as Instance), polygons, material IDs, or based on other modes. The random items are distributed among all the objects using this shader.

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The colors or textures can be blended together using the Mix amount parameter.

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Randomize by – Using this option, the occlusion can be controlled by a texture map or shader.Available randomization modes:

Primitives – When this mode is used, each of the items (color or textures)

will be

are randomly distributed on each mesh primitive (triangle).

  • Sub-primitive – When this mode is used,

    • Material name – When this mode is used, the items (color or textures)

    will be

    are randomly applied to the different materials the Multi shader is assigned to.
    Objects – When this mode is used, each of the items (color or textures)

    will be

    are randomly distributed on each of the instances (objects).
    Material tag index – When this mode is used, each of the items (color or textures)

     will be

    are randomly distributed based on the object’s material ID. 
    Material ID – When this mode is used, each of the items (color or textures)

     will be

     are randomly distributed based on the material’s Buffer ID.

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    Material IDs can be set via the advanced tab in each material.

    Object buffer ID – When this mode is used, each of the items (color or textures)

     will be

     are distributed based on the object’s Buffer ID.

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    Object Buffer's IDs can be set using the Corona Compositing tag for each object.

    Mesh Element – When this mode is used, items (color or textures)

     will be

     are randomly distributed on all mesh elements (in case the mesh consists of multiple elements). 
    Polygon – When this mode is used, items (color or textures)

     will be

     are randomly distributed on all mesh faces. (only available in Corona 8 and newer)
    Decal – When this mode is used, items (color or textures)

    will be

    are randomly distributed per decal object. (only available in Corona 8 and newer)
    Tile ID– Randomizes by different tiles if Corona Tile Map is used.
    Multiple properties – This option allows you to randomize the result by combining different modes.

    Batch load textures – This option allows you to load multiple texture maps at the same time.

    Layer count – This value defines the number of elements (layers) that will be are randomized.

    Mix amount – This value controls the blending of all elements (layers). A value of 100% will completely blend blends all element's colors or textures.

    Blur multiplier – This

    Seed – This value creates different randomizations.

    Hue random – This value randomizes the Hue for each element (layer).

    Saturation random – This value randomizes the Saturation for each element (layer).

    Gamma random – This value randomizes the Gamma for each element (layer).

     
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    Corona Multi Shader: Randomize by

    Panel
    titleRandomized by = Objects

    Panel
    titleRandomized by = Mesh elements

    Panel
    titleRandomized by = Polygons

    Panel
    titleRandomized by = Tile ID

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    Corona Multi Shader: Mix amount

    Panel
    titleMix amount = 0%

    Panel
    titleMix amount = 50%

    Panel
    titleMix amount = 100%

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    Corona Multi Shader Blur multiplier

    Panel
    titleBlur multiplier = 1

     

    Panel
    titleBlur multiplier = 50

     

    Panel
    titleBlur multiplier = 100

     

     

     



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    Corona Multi Shader: Hue random

    Panel
    titleHue random = 0%

    Panel
    titleHue random = 50%

    Panel
    titleHue random = 100%

     
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    Corona Multi Shader: Saturation random

    Panel
    titleSaturation random = 0%

    Panel
    titleSaturation random = 50%

    Panel
    titleSaturation random = 100%

     
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    Corona Multi Shader: Gamma random

    Panel
    titleGamma random = 0%

    Panel
    titleGamma random = 15%

    Panel
    titleGamma random = 30%

     

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    Color – This is the color for each element (layer).

    Frequency – This value controls the probability (frequency) of appearance for each element (layer).

    Texture – This slot allows you to use a texture map or shader for each element (layer). If a texture map or shader is loaded, it will override overrides the element's color.

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    It's possible to capture any specific color even from an open image file by using the eye dropper tool that is right next to the color slot.

     
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    Corona Multi Shader: Color

    Panel
    titleColor = Default color scheme

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    titleClick here to see the shader setup.

    Panel
    titleColor = Complementary colors

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    titleClick here to see the shader setup.

    Panel
    titleColor = 1 color + Hue, Sat, and Gamma randomization

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    titleClick here to see the shader setup.

     
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    Corona Multi Shader: Frequency

    Panel
    titleFrequency = All set to 1

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    titleClick here to see the shader setup.

    Panel
    titleFrequency = 0.25 increments

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    titleClick here to see the shader setup.

    Panel
    titleFrequency = Random values

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    titleClick here to see the shader setup.

     
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    Corona Multi Shader: Texture

    Panel
    titleTexture = 1 Color + 2 Textures

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    titleClick here to see the shader setup.

    Panel
    titleTexture = 4 Wood textures

    UI Expand
    titleClick here to see the shader setup.

    Panel
    titleTexture = 1 texture + Hue, Saturation, and Gamma randomization

    UI Expand
    titleClick here to see the shader setup.

     

     

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