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#ifndef DND_LIGHTING
#define DND_LIGHTING
sampler2D _ToonRamp;
float _AdditiveSoftness;
float _AdditiveOffset;
float _ForceLightDirection;
float _ShadowStrength;
float _OutlineShadowStrength;
float _ShadowOffset;
float3 _LightDirection;
float _ForceShadowStrength;
float _CastedShadowSmoothing;
float _MinBrightness;
float _MaxBrightness;
float _IndirectContribution;
float _AttenuationMultiplier;
UNITY_DECLARE_TEX2D_NOSAMPLER(_AOMap); float4 _AOMap_ST;
float _AOStrength;
float3 ShadeSH9Indirect()
{
return ShadeSH9(half4(0.0, -1.0, 0.0, 1.0));
}
float3 ShadeSH9Direct()
{
return ShadeSH9(half4(0.0, 1.0, 0.0, 1.0));
}
float3 ShadeSH9Normal(float3 normalDirection)
{
return ShadeSH9(half4(normalDirection, 1.0));
}
half3 GetSHLength()
{
half3 x, x1;
x.r = length(unity_SHAr);
x.g = length(unity_SHAg);
x.b = length(unity_SHAb);
x1.r = length(unity_SHBr);
x1.g = length(unity_SHBg);
x1.b = length(unity_SHBb);
return x + x1;
}
float FadeShadows(float attenuation, float3 worldPosition)
{
float viewZ = dot(_WorldSpaceCameraPos - worldPosition, UNITY_MATRIX_V[2].xyz);
float shadowFadeDistance = UnityComputeShadowFadeDistance(worldPosition, viewZ);
float shadowFade = UnityComputeShadowFade(shadowFadeDistance);
attenuation = saturate(attenuation + shadowFade);
return attenuation;
}
float calculateAOMap(float AOMap, float AOStrength)
{
return lerp(1, AOMap, AOStrength);
}
void calculateBasePassLighting(float3 normal, float2 uv)
{
poiLight.direction = _WorldSpaceLightPos0;
poiLight.nDotL = dot(normal, poiLight.direction);
float AOMap = 1;
#ifndef OUTLINE
AOMap = UNITY_SAMPLE_TEX2D_SAMPLER(_AOMap, _MainTex, TRANSFORM_TEX(uv, _AOMap));
AOMap = calculateAOMap(AOMap, _AOStrength);
#endif
poiLight.finalLighting = saturate((GetSHLength() + poiLight.color) * AOMap);
}
void calculateDNDLighting(v2f i)
{
#ifdef OUTLINE
_ShadowStrength = _OutlineShadowStrength;
#endif
UNITY_LIGHT_ATTENUATION(attenuation, i, i.worldPos.xyz)
poiLight.attenuation = FadeShadows(attenuation, i.worldPos.xyz);
poiLight.color = _LightColor0.rgb;
#ifdef FORWARD_BASE_PASS
calculateBasePassLighting(i.normal, i.uv);
#else
#if defined(POINT) || defined(SPOT)
poiLight.position = _WorldSpaceLightPos0.xyz;
poiLight.direction = normalize(poiLight.position - i.worldPos);
poiLight.nDotL = dot(i.normal, poiLight.direction);
poiLight.finalLighting = poiLight.color * poiLight.attenuation * smoothstep(.499, .5, .5 * poiLight.nDotL + .5);
#endif
#endif
}
void applyDNDLighting(inout float4 finalColor)
{
finalColor.rgb *= poiLight.finalLighting;
}
#endif
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