Creating godrays in Blender - Tip of the Week

Today we will get Evermotion Scene for Blender and change the lighting a bit - I want to add sun and volumetric godrays so we will get some nice, cosy effect. Creating godrays in Blender is easy. First, let's get the scene. I decided to download Evermotion Archinteriors vol 43 for Blender scene number 3. 

This is how the scene looks like when rendered in Blender. 

This is an image that we want to get.

It is our scene in Blender (top view)

This is how it looks in isometric view.

To create volumetric lighting, we need an object with volumetric material first. I add a cube and overlap it with a window.

I change it's apperance in viewport to "Wire" so it will not obstruct our view in non-rendering modes.

And now we have a cube that is presented only as a wireframe in viewport.

I add a Volume Scatter material to the cube and set our density to 0.5. As you can see, it's a bit too much.

I change the size of the cube so it covers both windows and change density to 0.05.

The last thing I need to dchange is the lighting - I chose Nishita sky model and set it to 0.3. I rotated a sun to get this nice rays casting on the floor.

And here is the final render (1200 samples).