Heat simulates the emission of thermal energy, giving materials a warm, glowing appearance. It is commonly used for heated or incandescent objects, such as fire, hot metal, or glowing embers, adding a sense of warmth and energy to the scene.
Emissive provides constant light emission, Heat conveys temperature-based glow, and Fluorescent reacts to environmental lighting, creating vivid, reactive colors. Together, these shaders offer versatile options for creating glowing and illuminated materials in your scene.
A Heat Map (RGB) texture can be assigned to control the color and intensity of the heat emission, which can be baked in Toolbag, sourced from the Toolbag Library, painted using a Texture Project, or created in third-party applications.

Setting | Description |
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Heat Map Texture Slot | Add a heat texture by clicking on the slot or dragging and dropping one from the Library. |
Intensity | Sets the strength of the heat effect. |
Temperature (K) | Sets the temperature, in degrees kelvin, which determines the brightness and color of the light emitted. |
Minimum Temperature (K) | Determines the value that black is mapped to in the texture, which sets the minimum brightness of the light emission. |
Under Clearcoat | When enabled, emission is attenuated by the clearcoat layer so that it looks like it’s coming from inside the object. |