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 – The file name with the data for the scanned material; files have a .vrscan extension.

Viewport Color – A color/texture used for previewing the material in a Textured viewport.

Show UV Borders

 – Displays the borders of the material tile in the viewport on the object(s) that have the material applied to it. This only works with the DirectX viewports.

Tiling Factor

 – Global multiplier for U and V coordinates.

Two Sided

 – Enables both sides of the material.

Disable Transparency

 – Turns off transparent properties of the material.

Use triplanar mapping – Ignores the object's default UV mapping and assigns one with U and V axes parallel to the nearest object-space axes. 

Random offset – Randomizes the material offset when triplanar mapping is used.

Random rotation – Randomizes the material rotation when triplanar mapping is used.

Adjust UV tiling – The .vrscan file stores information about the physical size of the scanned sample and by clicking on a point over a given object, the texture tiling is modified so that the texture is the correct size for the clicked point.

Check UV

mapping – Checks if the UV mapping has the necessary quality. Some scanned materials require very precise UV mapping. With this tool you can check the UV mapping before starting a lengthy render. Information about the UV mapping is printed in the Maya script editor.

Information (area) – The text field displays some useful information contained in the .vrscan file, like the actual material sample size.

 – Controls the number of reflection bounces. A value of -1 means that the reflection bounces are controlled by the global V-Ray trace depth in the

 Global switches

 rollout of the Renderer Settings.

Cutoff

 – A threshold used to speed up reflections. If the contribution of reflections falls below this threshold, the reflections are not traced. This is similar to the Cutoff threshold of

the VRayMtl material.

Bump and Parallax Zone – Determines the point where additional bump and parallax no longer exist and only natural height effects remain. This option is especially useful in side views of the material, where it might appear flat or less detailed. A value of 0 adds no additional bump and parallax. Value of 1 adds additional bump and parallax equally regardless of the view angle. All scanned materials by default have the most suitable value loaded for this parameter to achieve the most realistic look. If you need full control over the bump and the parallax, set the value to 1 and work with the Parallax and Bump Multipliers. 

Parallax Multiplier  – Adjusts additional parallax and edge displacement strength. 

Bump Multiplier – Adjusts the additional bump. 

Sampling Type

 – Determines which samples are taken around pixels involved in "blurry" effects such as anti-aliasing, depth of field, indirect illumination, area lights, glossy reflections/refractions, translucency, motion blur, etc.

Importance sampling

 – Bases the number of samples allocated to a value on the importance

 when it comes to things like distance from the camera or if more samples are needed to render a realistic result.
Uniform sampling

 – The number of samples is the evenly taken over the entire image.

Plain

Materials – A strategy used for material display. It controls the visibility of textures (if present). Possible values are:

None

 – The full material evaluation is always used. The object must have valid UV coordinates.
Average BRDF

 – Averages the BRDF and can be used to speed up the rendering for previews. Because texture details are removed, this also removes any tiling artifacts that might arise if the scanned sample does not tile very well. UV coordinates are still needed because most BRDFs are slightly anisotropic.
Average isotropic BRDF

 – Smooth representation of the material with no maps visible.

Color Space – Choose between sRGB, Adobe RGB, and Pro Photo color space models.

Edges Displacement – Uses a special technique that makes the edges of the geometry appear slightly jagged inwards. This option is useful when rendering close-ups of materials with bumps. It is faster than actual displacement and helps to achieve better realism.

No Cached Light

 – Allows you to disable the cached light for the material, ensuring physical accuracy without the need to switch off GI of the entire scene. Disabling this option results in faster, but less physically accurate render.