fix: reflect vector (it was not negative viewDir fml)

Author: minteeaa

shader/brdf.cginc

@@ -251,9 +251,8 @@ float3 PrepareIndirectSpecularTerm(in LightingData ld)
 
     float3 Fr = E * ld.indirectSpecular;
 
-    // specular calculated AO (using AO from tex)
     Fr *= ComputeSpecularAO(ld.NoV, _Occlusion, _Roughness);
-    //horizon AO
+
     Fr *= ld.horizon * ld.horizon;
 
     return Fr;

shader/util/util.cginc

@@ -39,7 +39,7 @@ void InitAnisotropyData(inout AnisotropyData ad, in LightingData ld, in v2f i) {
         float3 anisotropicNormal = cross(anisotropicTangent, anisotropyDirection);
         float bendFactor = abs(ad.strength) * saturate(5.0 * _RoughnessPerceptual);
         float3 bentNormal = normalize(lerp(_NormalWS, anisotropicNormal, bendFactor));
-        ad.r = reflect(ld.viewDir, bentNormal);
+        ad.r = reflect(-ld.viewDir, bentNormal);
     #endif
 }
 
@@ -219,7 +219,7 @@ void InitLightingData(inout v2f i, inout LightingData ld, inout VertexLightingDa
     ld.f0 = f0;
 
     float3 h = normalize(lightDir + viewDir);
-    float3 r = reflect(viewDir, _NormalWS);
+    float3 r = reflect(-viewDir, _NormalWS);
     float NoV = abs(dot(_NormalWS, viewDir)) + 1e-5;
     float NoL = clamp(dot(_NormalWS, lightDir), 0.0, 1.0);
     float LoV = clamp(dot(lightDir, viewDir), 0.0, 1.0);