�� struct d3drm_viewport
��{
�� �� ��struct d3drm_object obj;
+�� �� IDirect3DRMFrame *camera;
�� �� ��IDirect3DRMViewport IDirect3DRMViewport_iface;
�� �� ��IDirect3DRMViewport2 IDirect3DRMViewport2_iface;
+�� �� IDirect3DViewport *d3d_viewport;
+�� �� IDirect3DMaterial *material;
�� �� ��IDirect3DRM *d3drm;
�� �� ��D3DVALUE back;
�� �� ��D3DVALUE front;