Added blas-tlas;

Added Multi-Scattering GGX;

header/Material/Material.h

@@ -29,6 +29,8 @@ typedef struct
     uint32_t sample_index;
     uint32_t bounce_depth;
 
+    const struct scene_t* scene;
+
     const bvh_tree_t* bvh_tree;
     const triangle_collection_t* triangles;
     const light_collection_t* lights;