Effect_BackLighting

BackLighting

Back side render of water material.

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Mode Artistic:

Property	Function
Color	Color of the surface.
SpecularPow	Specular power.
SpecularColor	SpecularColor color.
ShadowAttenuation	The intensity of the water receive shadow, the smaller the value, the stronger the shadow.
FresnelTexture	Fresnel intensity map, use only alpha channel.
FresneIntensity	Fresnel intensity.
FresnelColor	Fresnel color.

Methods(HLSL)

half3 GetOceanBackArtisticLighting(half3 worldNormal, half3 worldViewDir, half3 lightDirection, half3 lightColor, float shadowAtten)
{
    half3 diffuse = max(0, dot(worldNormal, lightDirection)) * lightColor;
    half3 ambient = saturate(ShadeSH9(half4(worldNormal, 1.0)));
    half3 specular = pow(max(0, dot(lightDirection, -worldViewDir)), SpecularPow) * SpecularColor * lightColor;

    half fresnel = tex2D(FresnelTexture, half4(max(0, dot(worldViewDir, -worldNormal)), 0.5, 0, 0)).a;
    fresnel = saturate(fresnel * FresneIntensity);
    diffuse = lerp(diffuse, FresneColor, fresnel);

    half3 color = Color;
    color.rgb *= diffuse + ambient;
    color.rgb += specular;
    color.rgb *= saturate(shadowAtten + ShadowAttenuation);
}

Image

Disable under water fog:

Enable under water fog: