This page provides information on the V-Ray TexTemperature node.
Overview
The V-Ray Temperature texture map is typically used in conjunction with specific light sources to emulate a specific value, like a Kelvin temperature.
This is very useful for different parts of mesh lights, or to map the color of V-Ray Light Material changing from a warm to cool value.
Parameters
Mode – Specifies the mode in which the color is determined:
Color – The color is directly specified by the Color parameter.
Temperature – The color temperature (in Kelvin) is specified by the Temperature parameter.
Temperature – Specifies the temperature in Kelvin.
Color – Specifies the texture color.
RGB Multiplier – Specifies a multiplier for the color strength.
Alpha – Specifies the value for the Alpha channel. Note that the full intensity is reached at 1.0 for this parameter (and not 255).
Gamma Correction – Specifies a gamma correction applied during rendering. This does not affect the Color swatch.
Common Uses
In each example below, the sphere lights have the same V-Ray Light applied to them. A V-Ray Temperature texture map is applied to the V-Ray Light material to show various color temperatures between each example image. The Temperature texture has Mode set to Temperature.
In the final image below, five separate V-Ray Temperature texture maps were used, each with a different color temperature to show a variation. No other changes were made to the V-Ray Light.
Mode = Temperature
Temperature = 4000.000
Mode = Temperature
Temperature = 2700.000
Mode = Temperature
Temperature = 10000.000
Each mesh lights uses a different BRDFLight material & Temperature texture,
each with its Mode set to a different Temperature value