shader_scene_route_uPvmPrev( cam->mtx_prev.pv );
shader_scene_route_uMdl( identity_matrix );
shader_scene_route_uCamera( cam->transform[3] );
shader_scene_route_uPvmPrev( cam->mtx_prev.pv );
shader_scene_route_uMdl( identity_matrix );
shader_scene_route_uCamera( cam->transform[3] );