Prototype for Virtual Reality with Photoshop

Quickly mockup a design for VR in photoshop

1) Load up equirectangular image
2) 3D > Spherical Panorama > New Panorama Layer from Selected Layers(s)
3) Draw on Panorama Layer
4) 3D > Spherical Panorama > Export Panorama

Tip: Draw on a new empty layer for non-destructive editing, but don't move the camera orientation before applying to the 3D layer. Select the new layer > "Merge Down" > Export Panorama