[QUOTE=Jacky;34452]
There is a level called Reflections in Content Examples project. Open it and then head to 1.7.
What you see there is a SceneCapture2D actor facing the direction you want reflected. Once you set it up, create a TextureRenderTarget2D in the content browser and insert it to SceneCapture2D’s Texture Target. And then use that texture in the material of your mirror mesh. You can also see the material setup in that same project.
Non of these examples are true realistic mirror. To make a real mirror you have to position camera to correct place, adjust camera near clip plane to mirror surface and capture that image.