There is a situation, that we want our application to display a 3d model standing in a scene but we don't want to work on the scene. And then i made this plugin. Sky Dome is to generate a semi-sphere, so that you can have a photorealistic background with just a 360 photo.
And it's not just about semi-sphere mesh. Shader is also important. 1st, the shader uses cubemap instead of texture2d, which has better resolution. 2nd, the shader support deferred rendering, it's not just an unlit shader. 3rd, the plugin uses a tricky to make it works well with Unity Post Processing. using semi-sphere will just give you a dim horizontal line. 4th, the real time shadow