Add PVS (Potentially Visible Set) culling system

.gitignore

@@ -15,3 +15,4 @@
 /active_project
 /test/assets/assets.db
 /test/products/
+_codeql_detected_source_root

runtime/core/include/core/shapes/Shapes.h

@@ -14,6 +14,22 @@ namespace sky {
     bool Intersection(const AABB &aabb, const Frustum &frustum);
     std::pair<bool, int> Intersection(const AABB &aabb, const Plane &plane);
 
+    /**
+     * @brief Ray-AABB intersection test
+     * @param ray Ray to test
+     * @param aabb Axis-aligned bounding box
+     * @return (hit, tMin, tMax) - whether hit occurred, and entry/exit distances
+     */
+    std::tuple<bool, float, float> Intersection(const Ray &ray, const AABB &aabb);
+
+    /**
+     * @brief Ray-AABB intersection test (simple version)
+     * @param ray Ray to test
+     * @param aabb Axis-aligned bounding box
+     * @return true if ray intersects AABB
+     */
+    bool IntersectionTest(const Ray &ray, const AABB &aabb);
+
     // utils
     Plane CreatePlaneByVertices(const Vector3 &v1, const Vector3 &v2, const Vector3 &v3);
     Plane CreatePlaneByNormalAndVertex(const Vector3 &normal, const Vector3 &pt);