forked from bartvdbraak/blender
Eevee: Principled: Fix Subsurface input behaviour
Match Cycles behaviour of scalling the SSS radius and don't interpolate between diffuse and SSS result.
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@ -1145,15 +1145,18 @@ void node_bsdf_principled_clearcoat(vec4 base_color, float subsurface, vec3 subs
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clearcoat *= 0.25;
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clearcoat *= 1.0 - transmission;
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vec3 mixed_ss_base_color = mix(diffuse, subsurface_color.rgb, subsurface);
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#ifdef USE_SSS
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diffuse = mix(diffuse, vec3(0.0), subsurface);
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diffuse = vec3(0.0);
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#else
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diffuse = mix(diffuse, subsurface_color.rgb, subsurface);
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diffuse = mixed_ss_base_color;
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#endif
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f0 = mix(f0, vec3(1.0), transmission);
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float sss_scalef = dot(sss_scale, vec3(1.0 / 3.0));
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eevee_closure_principled(N, diffuse, f0, int(ssr_id), roughness,
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float sss_scalef = dot(sss_scale, vec3(1.0 / 3.0)) * subsurface;
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eevee_closure_principled(N, mixed_ss_base_color, f0, int(ssr_id), roughness,
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CN, clearcoat, clearcoat_roughness, 1.0, sss_scalef, ior,
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out_diff, out_trans, out_spec, out_refr, ssr_spec);
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@ -1178,9 +1181,9 @@ void node_bsdf_principled_clearcoat(vec4 base_color, float subsurface, vec3 subs
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result.sss_data.a = sss_scalef;
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result.sss_data.rgb = out_diff + out_trans;
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# ifdef USE_SSS_ALBEDO
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result.sss_albedo.rgb = mix(vec3(0.0), subsurface_color.rgb, subsurface);
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result.sss_albedo.rgb = mixed_ss_base_color;
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# else
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result.sss_data.rgb *= mix(vec3(0.0), subsurface_color.rgb, subsurface);
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result.sss_data.rgb *= mixed_ss_base_color;
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# endif
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result.sss_data.rgb *= (1.0 - transmission);
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#endif
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