VrayDisplaceMaterial

• General
• Parameters
  • Basic Properties
  • Parameters
  • Assignment
• Notes

General

This material allows you to control displacement of objects. Displacement is a technique for adding detail to your scene geometry without having to model it first. The concept is very similar to material bump. However, bump is a shading effect that only changes the appearance of a surface, while displacement actually modifies the surface. 

 

VrayDisplaceMaterial used in the same way like usual vray material.

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Parameters

Basic Properties

Name - here you can enter a name for the object.

 

Layer -  If an element was assigned to a layer its layer color will be displayed here. This field reflects the layer color in the Layer Palette. You can drag & drop layers from the Layer Browser or similar layer fields onto this field. You can also assign layers or remove elements from current layers using the menus located behind the small triangle.

 

Preview Quality - quality of material preview in preview window.

 

Use Displacement -  when this option is checked Vray Displace Material will affect object.

 

Use as Subdivision Surface - when this option is checked Vray Displace Material will apply a subdivision scheme to the object. For triangular portions of a mesh, the Loop subdivision scheme is used. For quadrangular portions, the Catmull-Clark scheme is used. Other polygons are first converted to triangles.

Parameters

Texture - the displacement map. This can be any texture map - a bitmap, procedural map etc.

 

Texture Type - for displacement texture you can use a classic luminace grayscale based map (Luminance texture) or Normal Map (RGB).

 

Amount - the amount of displacement. A value of 0.0 means the object will appear unchanged. Higher values produce a greater displacement effect. This can also be negative, in which case the displacement will push geometry inside the object. Intensity of the displacement is sets in really world units, thous units are taken from the c4d units of the file, if you change the units there also the displacement size changes accordingly.

 

Shift - this specifies a constant, which will be added to the displacement map values, effectively shifting the displaced surface up and down along the normals. This can be either positive or negative.

 

Keep continuity - using this will try to produce a connected surface, without splits.

 

Use Global parameters - when this option is off VRAYforC4D's displacement tag will use own displacement parameters, not Displacement Render Settings values.

 

View dependent - when this is on, Edge length determines the maximum length of a subtriangle edge, in pixels. A value of 1.0 means that the longest edge of each sub triangle will be about one pixel long when projected on the screen. When View-dependent is off, Edge length is the maximum sub triangle edge length in world units. 

 

Edge length - this determines the quality of the displacement. Each triangle of the original mesh is subdivided into a number of subtriangles. More subtriangles mean more detail in the displacement, slower rendering times and more RAM usage. Less subtriangles mean less detail, faster rendering and less RAM. The meaning of Edge length depends on the View-dependent parameter below.

 

Max subdivs - this controls the maximum subtriangles generated from any triangle of the original mesh. The value is in fact the square root of the maximum number of subtriangles. For example, a value of 256 means that at most 256 x 256 = 65536 subtriangles will be generated for any given original triangle. It is not a good idea to keep this value very high. If you need to use higher values, it will be better to tessellate the original mesh itself into smaller triangles instead. 

Notes

• You can use with VrayDisplaceMaterial normal maps in Texture slot in RGB mode of Texture Type.