The content generation of 3D graphics is a hard task, because it has so many kinds of virtual objects, such as material, particle, terrain, weather, visual effects, and so on. In this paper, an integrated development framework is proposed, which contains a real-time graphics rendering engine, and several visual toolkits for content creation. This platform becomes a full environment for real-time 3D content generation, which supports WYSWYP (what you see is what you play). The application fields contain digital display, network game, military simulation, and augmented reality.