Hey folk , i posted an question befor about make Perlin noise on gltf model , but there is also a problem so i will repost it , sorry
i try to calc a computedNormal to the model but there is no showing result
i find this way but cannot know what the issue in
vec3 computedNormal = cross(displacedPositionA - displacedPosition.xyz, displacedPositionB - displacedPosition.xyz);
computedNormal = normalize(computedNormal);
displacedPosition for noise but i need computedNormal to use it in frensel effect , any one have an idea ?
full sandbox:
