The Float Texture provides a map where the texture data is a floating point value between 0.00 to 1.00. This signifies a grayscale value where the value of 0.00 is darkest and value of 1.00 is lightest.
In figure 1, the Float Texture node is connected to a Glossy materialUsed for shiny materials such as plastics or metals.'s Roughness parameter.
Figure 1: A Float texture is connected to a GlossyThe measure of how well light is reflected from a surface in the specular direction, the amount and way in which the light is spread around the specular direction, and the change in specular reflection as the specular angle changes. Used for shiny materials such as plastics or metals. material's roughness channel.