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authorclayjohn <claynjohn@gmail.com>2023-02-13 19:24:14 -0800
committerclayjohn <claynjohn@gmail.com>2023-02-13 19:24:14 -0800
commit5a800e68f1699c278078ff96100b0c0ea9a1780e (patch)
tree484fc9e0920e3f94cd975019cd9e393b9c0d0323 /core/math
parent4a2c2170b40b4e5562c9ad0f1e0ed84c6bf5c7b7 (diff)
Bias octahedral tangent y axis to avoid errors around 0
Diffstat (limited to 'core/math')
-rw-r--r--core/math/vector3.cpp2
1 files changed, 2 insertions, 0 deletions
diff --git a/core/math/vector3.cpp b/core/math/vector3.cpp
index d732f1e8b2..ae009fc4ef 100644
--- 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;