Switch –Values are defined by the assigned Switch texture, or the Switch value when no texture is specified. When no material is linked to the current value, the geometry doesn't have valid shading and is not visible in the render.
Texture– The texture which is sampled to switch between the assigned materials. Materials used are based on the value of the switch texture.
ID Range Mix – Specifies a strength amount for the texture map. The value specified here is multiplied by the Texture and the Switch valuesThis slider represents the range of the material IDs, when a Texture is applied. Reducing the percent, reduces the number of materials used. For example, with 5 materials used, a value of 19% uses the first material in the list. A value of 67%, uses the first three materials in the list.
Round Mode– Determines how to round the switch value.
When Round Nearest is selected, the switch range is taken as follows:
Code Block
ID(x) = [x - 0.5; x + 0.49]
For example, a list of 3 materials will have the following range: Material 1 with ID 1 is assigned for values 0.5 - 1.49; Material 2 with ID 2 is assigned for values 1.5 - 2.49; Material 3 with ID 3 is assigned for values 2.5 - 3.49.
When Round Down is selected, the switch range is taken as follows:
Code Block
ID(x) = [x, x + 0.99]
For example, a list of 3 materials will have the following range: Material 1 with ID 1 is assigned for values 1.0 - 1.99; Material 2 with ID 2 is assigned for values 2.0 - 2.99; Material 3 with ID 3 is assigned for values 3.0 - 3.99.
Loop Materials– If the switch value is out of range, V-Ray goes to the next available material assigned, skipping empty slots and looping from the beginning.
You can add or remove materials from the list by using the Add and Clear buttons.
MATERIAL
Enabled – Select whether the material is used when V-Ray goes through the list.
Move Up– Moves the material with one position up in the list.
Move Down– Moves the material with one position down in the list.
Remove– Removes only the selected material.
ID – Specifies an ID for the switch. This is the value used to loop the texture through the list of materials. See how V-Ray assigns this value based on the Round Mode above.
