All required dll files are in the executables folder.
Therefore, executable should work right away.

Dragging left mouse button rotates the camera.
Dragging middle mouse button zooms in/out.
Dragging right mouse button pans the view.

Using buttons to the left, three models (bunny, dragon, plane) and light can be added to the scene.
Scene objects can be selected directly by clicking on them.
Scene objects can be translated by dragging the translation gizmos once a scene object is selected.
Other attributes can be set from the left menu. (material, rotation etc.)
Pressing 'D' removes the active object from the scene.
Pressing 'F' centers the camera to the active object.
Pressing 'R' displays lastly rendered image. (Press 'R' again to return to the scene)
Pressing 'H' hides the meshes.

To be able to render, first tree must be generated using buttons to the bottom right.
After either Octree, BSP tree or k-D tree is generated, they can be visualised using commands 
to the upper right corner of the screen.

Render button is used to render the scene.
P. Color button toggles false color graph.