Bias octahedral tangent y axis to avoid errors around 0

godotengine · Feb 14, 2023 · 5a800e6 · 5a800e6
1 parent 4a2c217
commit 5a800e6
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/core/math/vector3.cpp b/core/math/vector3.cpp
@@ -108,7 +108,9 @@ Vector3 Vector3::octahedron_decode(const Vector2 &p_oct) {
 }
 
 Vector2 Vector3::octahedron_tangent_encode(const float sign) const {
+ const float bias = 1.0f / 32767.0f;
  Vector2 res = this->octahedron_encode();
+ res.y = MAX(res.y, bias);
  res.y = res.y * 0.5f + 0.5f;
  res.y = sign >= 0.0f ? res.y : 1 - res.y;
  return res;