/// <summary>
/// Creates the rain material.
/// </summary>
/// <param name="shaderType"></param>
/// <param name="renderQueue"></param>
/// <returns></returns>
public static Material CreateRainMaterial(RainDropShaderType shaderType, int renderQueue)
{
var shader = Shader.Find(GetShaderName(shaderType));
var mat = new Material(shader);
mat.renderQueue = renderQueue;
return(mat);
}
/// <summary>
/// Apply the values to a material of rain object
/// </summary>
/// <param name="material"></param>
/// <param name="shaderType"></param>
/// <param name="normalMap"></param>
/// <param name="overlayTexture"></param>
/// <param name="distortionValue"></param>
/// <param name="overlayColor"></param>
/// <param name="reliefValue"></param>
/// <param name="blur"></param>
/// <param name="darkness"></param>
public static void ApplyRainMaterialValue(
Material material,
RainDropShaderType shaderType,
Texture normalMap,
Texture overlayTexture = null,
float distortionValue = 0f,
Color?overlayColor = null,
float reliefValue = 0f,
float blur = 0f,
float darkness = 0f
)
{
// Apply shader values
switch (shaderType)
{
case RainDropShaderType.Expensive:
material.SetColor("_Color", overlayColor ?? Color.white);
material.SetFloat("_Strength", distortionValue);
//material.SetFloat("_HeightOffset", 0.5f);
material.SetFloat("_Relief", reliefValue);
if (blur != 0f)
{
material.EnableKeyword("BLUR");
material.SetFloat("_Blur", blur);
}
else
{
material.DisableKeyword("BLUR");
material.SetFloat("_Blur", blur);
}
material.SetFloat("_Darkness", darkness);
material.SetTexture("_Distortion", normalMap);
material.SetTexture("_ReliefTex", overlayTexture);
break;
case RainDropShaderType.Cheap:
material.SetFloat("_Strength", distortionValue);
material.SetTexture("_Distortion", normalMap);
break;
case RainDropShaderType.NoDistortion:
material.SetTexture("_MainTex", overlayTexture);
material.SetTexture("_Distortion", normalMap);
material.SetColor("_Color", overlayColor ?? Color.white);
material.SetFloat("_Darkness", darkness);
material.SetFloat("_Relief", reliefValue);
break;
default:
break;
}
}
//public static string SHADER_DEFFERED = "RainDrop/Internal/RainDistortion (Deffered)";
/// <summary>
/// Get the shader name from RainDropShaderType
/// </summary>
/// <param name="shaderType"></param>
/// <returns></returns>
public static string GetShaderName(RainDropShaderType shaderType)
{
switch (shaderType)
{
case RainDropShaderType.Expensive:
return(SHADER_FORWARD);
case RainDropShaderType.Cheap:
return(SHADER_CHEAP);
case RainDropShaderType.NoDistortion:
return(SHADER_NO_DISTORTION);
default:
return("");
}
}