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Add additional light shadow support to Toon lighting model #445

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Add additional light shadow support to Toon lighting model #445

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18 changes: 17 additions & 1 deletion UOP1_Project/Assets/Shaders/CustomHLSL/CustomLighting.hlsl
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Original file line number Diff line number Diff line change
Expand Up @@ -41,20 +41,36 @@ void DirectSpecular_float(float Smoothness, float3 Direction, float3 WorldNormal
#endif
}

half4 GetShadowMask()
{
// TODO: not sure if/how we can access inputData.shadowMask here.
// Should only be relevant for lightmapped surfaces receiving additional light shadows
// #if defined(SHADOWS_SHADOWMASK) && defined(LIGHTMAP_ON)
// half4 shadowMask = inputData.shadowMask;
// #elif !defined (LIGHTMAP_ON)
#if !defined (LIGHTMAP_ON)
half4 shadowMask = unity_ProbesOcclusion;
#else
half4 shadowMask = half4(1, 1, 1, 1);
#endif
return shadowMask;
}

void AdditionalLights_float(float Smoothness, float3 WorldPosition, float3 WorldNormal, float3 WorldView, out float3 Diffuse, out float3 Specular)
{
float3 diffuseColor = 0;
float3 specularColor = 0;
float4 White = 1;

#if !defined(SHADERGRAPH_PREVIEW)
half4 shadowMask = GetShadowMask();
Smoothness = exp2(10 * Smoothness + 1);
WorldNormal = normalize(WorldNormal);
WorldView = SafeNormalize(WorldView);
int pixelLightCount = GetAdditionalLightsCount();
for (int i = 0; i < pixelLightCount; ++i)
{
Light light = GetAdditionalLight(i, WorldPosition);
Light light = GetAdditionalLight(i, WorldPosition, shadowMask);
half3 attenuatedLightColor = light.color * (light.distanceAttenuation * light.shadowAttenuation);
diffuseColor += LightingLambert(attenuatedLightColor, light.direction, WorldNormal);
specularColor += LightingSpecular(attenuatedLightColor, light.direction, WorldNormal, WorldView, White, Smoothness);
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