#ifdef PUDDLES_ON_WATER
    const float WATER_THRESHOLD = 0.5;
#else
    const float WATER_THRESHOLD = 0.0;
#endif


if (water > WATER_THRESHOLD && wetness > 0.001) {
puddles = GetPuddles(worldPos, newCoord, wetness) * clamp01(NoU) * skyRefFactor;
}

#ifdef WEATHER_PERBIOME
	float weatherweight = float(isCold + isDesert + isMesa + isSavanna);
	puddles *= 1.0 - weatherweight;
#endif

puddles *= clamp01(lightmap.y * 32.0 - 31.0);

float ps = sqrt(1.0 - 0.75 * porosity);
float pd = (0.5 * porosity + 0.15);

smoothness = mix(smoothness * 0.85, 1.0, puddles * ps);
f0 = max(f0, puddles * 0.02);

albedo.rgb *= 1.0 - (puddles * pd);

if (puddles > 0.001 && rainStrengthS > 0.001) {
mat3 tbnMatrix = TBN_MATRIX(tangent, binormal, normal);

vec3 puddleNormal = GetPuddleNormal(worldPos, viewPos, tbnMatrix);
newNormal = normalize(mix(newNormal, puddleNormal, puddles * sqrt(1.0 - porosity) * rainStrengthS));
}