The Absorption and Scattering targets allows changing the water volume color at the texel level. These are separate simulations, but are often used together.
They both contain depth-based absorption/scattering, which can simulate suspended matter, dissolved matter and other scattering elements close to shore.
User Inputs¶
The Absorption/Scattering Input component can write data to the simulation and supports the Texture Mode, Spline Mode, Paint Mode and Renderer Mode.
Texture¶
Be aware that the absorption simulation stores a computed absorption value, not the absorption color you will see on materials and scripts. This is an issue when using this mode, as the input texture needs to be in the computed value. To calculate the absorption value, see CalculateAbsorptionValueFromColor.
Renderer¶
The following shaders are available under Crest/Inputs/Absorption and Crest/Inputs/Scattering if using the Renderer Mode:
Color a basic shader for writing a color.
Material¶
If you need to change the absorption value via script, then do the following:
var material = WaterRenderer.Instance.Material;
var color = Color.red; // Replace with your color.
material.SetColor(Shader.PropertyToID("_Crest_AbsorptionColor"), color);
material.SetVector(Shader.PropertyToID("_Crest_Absorption"), WaterRenderer.CalculateAbsorptionValueFromColor(color));