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This window allows you to get a quick preview of the material while you are editing it. When you are changing your material parameters, double-click in the preview sample image to refresh the preview with the new parameters, or click on the Refresh Preview button (green double-arrow icon), and Maxwell Render will compute a preview of your material. During the preview, the green icon will be replaced by a red square icon, to indicate that it is calculating your preview.
3. BSDF Properties
BSDF stands for Bidirectional Scattering Distribution Function, which is the usual abbreviation in computer graphics for the main surface definition. It contains Contains the parameters to control the main optical properties for each material component (BSDF, coatings, etc).
4. Surface Properties
Parameters to control the surface properties of a material. The material components section also contains various buttons to control the aspect of the material and material editor.
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