Update leenkx/Shaders/std/brdf.glsl

leenkx/Shaders/std/brdf.glsl

@@ -86,7 +86,7 @@ vec3 surfaceAlbedo(const vec3 baseColor, const float metalness) {
 }
 
 vec3 surfaceF0(const vec3 baseColor, const float metalness) {
-	return mix(vec3(0.04), baseColor, metalness);
+	return mix(vec3(0.04), baseColor * (2.0 + metalness * 1.2), metalness);
 }
 
 float getMipFromRoughness(const float roughness, const float numMipmaps) {