[#4] Fix the rotation bug due to incorrect front face setting.

Morozov-5F · Nov 28, 2021 · fd3052e · fd3052e
1 parent 92cec70
commit fd3052e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/hittables/rt_instance.c b/hittables/rt_instance.c
@@ -86,7 +86,7 @@ static bool rt_instance_hit(const rt_hittable_t *hittable, const ray_t *ray, dou
     vec3_add(&record->p, instance->offset);
 
     vec3_t new_normal = rt_mat3_mul_vec3(&instance->transform_matrix_bb, &record->normal);
-    rt_hit_record_set_front_face(record, &transformed_ray, &new_normal);
+    rt_hit_record_set_front_face(record, &ray, &new_normal);
 
     return true;
 }