Renderings can be developed by adding effects one at a time, trading increased realism for rendering speed. Initial renderings may be simply shaded. To increase realism, global illumination effects may be added one at a time. Portions of the scene may be rendered with the Render Area rectangle, allowing for small snapshots of scene to be generated at much reduced rendering speed.
Starting with a basic rendering and a sun light only.
Adding final gather gives better light distribution.
Enabling atmoshperic light adds illumination from directions other than the direct sun light.
A short amount of time spent by radiosity distributes the light further.
In the final stages, ambient occlusion adds subtle shading in corners and around the furniture.
Testing different floor materials using the Render Area feature.