#if _SNOWGLITTER

         void DoSnowGlitter(Input i, Config c, inout MicroSplatLayer o, float camDist, float3 worldVertexNormal, float snowMask)
         {
            float str = _SnowGlitterStrength * lerp(_SnowGlitterDistFade.z, _SnowGlitterDistFade.w, saturate((camDist - _SnowGlitterDistFade.x) / max(_SnowGlitterDistFade.y, 0.01)));
            
            float uv = c.uv;
            #if _WORLDUV
               uv = i.worldPos.xz;
            #endif
            
            half3 lightDir = GetGlobalLightDir(i);
            
            half3 viewDir = normalize(_WorldSpaceCameraPos.xyz - i.worldPos);
            half specular = saturate(dot(worldVertexNormal, normalize(viewDir + lightDir)));
            specular = pow(specular, abs(_SnowGlitterShininess));


            float boost = pow(specular, abs(_SnowGlitterShininess)) * _SnowGlitterThreshold;

            float2 uvo = sin(uv * _SnowGlitterUVScale.xy * 0.237);
            half2 n = SAMPLE_TEXTURE2D(_GlitterWind, sampler_Diffuse, uv * _SnowGlitterUVScale + i.viewDir.z * _SnowGlitterViewDep).xy;
            half n2 = SAMPLE_TEXTURE2D(_GlitterWind, sampler_Diffuse, uvo + uv * _SnowGlitterUVScale * 0.17921 + 0.5).b;
            n.xy = n.xy * 2 - 1;
            n.xy *= n2;

            n.xy *= _SnowGlitterGraininess * boost;

            boost *= str * snowMask;

            o.Normal.xy = lerp(o.Normal.xy, BlendNormal2(o.Normal, n), boost);
            o.Smoothness = min(1, o.Smoothness + boost);

         }
      #endif