added specular occlusion from realtime shadows

disabled by default, #define SPECULAR_OCCLUSION_REALTIME_SHADOWS in the config to enable
z3y · Feb 4, 2024 · 2105ac8 · 2105ac8
1 parent a76a59c
commit 2105ac8
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diff --git a/Editor/Importer/LitImporterDefaultProperties.cs b/Editor/Importer/LitImporterDefaultProperties.cs
@@ -42,6 +42,7 @@ [ToggleGroupEnd] [UnIndent] [ToggleOff] _OpaqueLights(""Opaque Lights"", Float)
     // #define NONLINEAR_LIGHTPROBESH // enable non linear lightprobe sh
     // #define DISABLE_LIGHT_PROBE_PROXY_VOLUME // disable LPPV
     // #undef UNITY_SPECCUBE_BLENDING // disable blending of 2 reflection probes
+    // #define SPECULAR_OCCLUSION_REALTIME_SHADOWS // allow realtime directional shadows to affect specular occlusion and subtract from the indirect diffuse light
 DEFINES_END
 
 ";

diff --git a/ShaderLibrary/ForwardLighting.hlsl b/ShaderLibrary/ForwardLighting.hlsl
@@ -438,6 +438,10 @@ namespace CustomLighting
                     half3 bentLight = giData.IndirectDiffuse;
                 #endif
 
+                #if defined(SHADOWS_SCREEN) && defined(SPECULAR_OCCLUSION_REALTIME_SHADOWS)
+                half NoL = saturate(dot(sd.normalWS, mainLightData.direction));
+                bentLight *= NoL * mainLightData.attenuation;
+                #endif
                 half bentLightGrayscale = sqrt(dot(bentLight + giData.Light, 1.0));
                 half bentLightGrayscaleRemap = saturate(lerp(1.0, bentLightGrayscale, surfaceDescription.SpecularOcclusion));
                 reflections *= bentLightGrayscaleRemap;