diff options
Diffstat (limited to 'servers/rendering_server.cpp')
| -rw-r--r-- | servers/rendering_server.cpp | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/servers/rendering_server.cpp b/servers/rendering_server.cpp index 6e9b525f31..3aa042ce78 100644 --- a/servers/rendering_server.cpp +++ b/servers/rendering_server.cpp @@ -566,7 +566,8 @@ Error RenderingServer::_surface_set_data(Array p_arrays, uint64_t p_format, uint float angle; Vector3 axis; // Generate an arbitrary vector that is tangential to normal. - Vector3 tan = Vector3(0.0, 1.0, 0.0).cross(normal_src[i].normalized()); + // This assumes that the normal is never (0,0,0). + Vector3 tan = Vector3(normal_src[i].z, -normal_src[i].x, normal_src[i].y).cross(normal_src[i].normalized()).normalized(); Vector4 tangent = Vector4(tan.x, tan.y, tan.z, 1.0); _get_axis_angle(normal_src[i], tangent, angle, axis); @@ -689,7 +690,8 @@ Error RenderingServer::_surface_set_data(Array p_arrays, uint64_t p_format, uint // Set data for tangent. for (int i = 0; i < p_vertex_array_len; i++) { // Generate an arbitrary vector that is tangential to normal. - Vector3 tan = Vector3(0.0, 1.0, 0.0).cross(normal_src[i].normalized()); + // This assumes that the normal is never (0,0,0). + Vector3 tan = Vector3(normal_src[i].z, -normal_src[i].x, normal_src[i].y).cross(normal_src[i].normalized()).normalized(); Vector2 res = tan.octahedron_tangent_encode(1.0); uint16_t vector[2] = { (uint16_t)CLAMP(res.x * 65535, 0, 65535), |