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#ifndef RIM_LIGHTING
#define RIM_LIGHTING
float4 _RimLightColor;
float _RimWidth;
float _RimStrength;
float _RimSharpness;
float _RimLightColorBias;
float4 _RimTexPanSpeed;
float _ShadowMix;
float _ShadowMixThreshold;
float _ShadowMixWidthMod;
UNITY_DECLARE_TEX2D_NOSAMPLER(_RimTex); float4 _RimTex_ST;
UNITY_DECLARE_TEX2D_NOSAMPLER(_RimMask); float4 _RimMask_ST;
float4 rimColor = float4(0, 0, 0, 0);
float rim = 0;
void calculateRimLighting(float2 uv, float cameraDotVert)
{
float rimMask = UNITY_SAMPLE_TEX2D_SAMPLER(_RimMask, _MainTex, TRANSFORM_TEX(uv, _RimMask));
rimColor = UNITY_SAMPLE_TEX2D_SAMPLER(_RimTex, _MainTex, TRANSFORM_TEX(uv, _RimTex) + (_Time.y * _RimTexPanSpeed.xy)) * _RimLightColor;
_RimWidth = lerp(_RimWidth,_RimWidth * lerp(0,1,poiLight.lightMap-_ShadowMixThreshold) * _ShadowMixWidthMod,_ShadowMix);
rim = 1-smoothstep(min(_RimSharpness,_RimWidth),_RimWidth,cameraDotVert);
rim *= _RimLightColor.a * rimColor.a * rimMask;
}
void applyRimColor(inout float4 finalColor)
{
finalColor.rgb = lerp(finalColor.rgb, lerp(finalColor.rgb, rimColor, _RimLightColorBias), rim);
}
void ApplyRimEmission(inout float4 finalColor)
{
finalColor.rgb += rim * rimColor * _RimStrength;
}
#endif
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