Proprietary 3D application files, such as.Maxand.Blendfile formats from 3D Studio Max or Blender for example. Either should enable you to get your meshes into Unity, but there are considerations as to which type you choose: Exported 3D files ...
They are not HDRIs, but for testing your Skybox in your engine its a really great tool. Rendering a Cubemap in Blender Now that we know what we have to do we can imagine a cube in a 3D-World and each face of the cube is a camera. The view angle of that camera has to be 90...