Overview of Materials in Cycles - Blender Cycles Materials and Textures - page 5

5. Now you can rotate and translate the view or the Cube itself, and the view gets

updated in real time (the speed of the update is restricted only by the complexity
of the scene and the computing power of your CPU or graphics card).

Let's learn more by performing the following steps:

1. Select the Lamp item in the Outliner window (by default, it's a Point lamp).

2. Go to the Object data window under the Properties panel on the right-hand side

of the screen.

3. Under the Nodes tab, click on Use Nodes to activate a node system for the selected

light in the scene. This node system is made by an Emission shader connected to a
Lamp Output node.

4. Go to the Strength item, which is set to 100.000 by default, and start increasing the

value. As the intensity of the Lamp increases, you will see the Cube and the Plane
rendered in the viewport getting brighter, as shown in the following screenshot:

The Viewport Shading menu with the Rendered item and the Lamp Object data window with the Strength slider

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