This simple tutorial demonstrates how to create an incandescent metal material. It uses a variety of shaders such as facing_ratio, range, multiply and cell_noise connected to the emission_color of the standard_surface shader. Thanks to Slava Sych for the assistance with this tutorial.

The shader used in this tutorial can be found here.

Standard Surface

Create a standard_surface shader and assign to your model.

• Increase metalness to 1

Cell Noise

Create a cell_noise shader (cell_noise1) and change the following parameters:

• pattern : worley2

• additive : Enabled

• octaves : 4

• lacunarity : 1.76

• amplitude : 0.72

• scale XYZ: 25 25 25 (remember that Scale values depend on the size of your model).

Range shader (range3)

Create a range shader and connect it to the base_weight of the standard_surface shader. Connect the cell_noise shader to the Input of range3 . Change the following parameters:

• input_min : 0.249

• output_min : 0.3

• output_max : 0.7

• smoothstep : Enabled

Range shader (range2)

Create another Range shader and change the following parameters:

• input_min : 0.3

• input_max : 0.7

• output_min : 0.1

• smoothstep : Enabled

Bump2D

Create a bump2D shader and change the bump_height to 0.02. Connect the range shader (range2) to bump_map in the bump2d shader, and connect the bump2d shader to normal of the standard_surface shader.

Facing Ratio

Create a facing_ratio shader and change the following parameters:

• bias : 0.6

• gain : 0.48

• linear : Enabled

• invert : Enabled

Color Correct

• Create a color_correct shader. Change the input color RGBA to: 2.9642 0.5212 0 1

Connect the facing_ratio shader and color_correct shaders to a multiply shader (multiply1).

Range Shader (range4)

Create another range shader and change the following parameters:

• input_min : 0.249

• input_max : 0.484

• output_min : 0.7

• output_max : 1

• Enable smoothstep

Connect the cell_noise shader (cell_noise1) to the input of the range shader (range4).

Create a multiply shader (multiply2) . Connect multiply1 to the Input 1 of multiply2.

Connect the range shader (range4) to input2 of multiply2.

Range shader (range 1)

Create a range shader.

• Change the output_max to 3.

Connect the multiply shader (multiply2) to the input of range shader (range1) . This is required for the higher value color intensity values.

Connect the range shader (range1) to the emission_color of the standard_surface shader.

Now it is possible to control the incandescence using the emission_weight (0 to 1). If you require more intensity, increase the output_max value in range shader (range1).

_{Final shading network}