This page provides information about the V-Ray Decal in Maya.
Overview
VRayDecal provides an easy way to project one material on top of another regardless of the target UV set. The projected material is placed in an adjustable VRayDecal gizmo that controls its size, placement and projection limits in the Viewport.
Multiple VRayDecals can be stacked on top of each other and their overlapping is controlled by the parameters in each VRayDecal object.
The VRayDecal’s effect is visible at render time only.
The material is projected only on the surfaces within the gizmo.
UI path: ||V-Ray Shelf|| > Create V-Ray Decal
UI Path: V-Ray menu > V-Ray Decal
UI Path: Create menu > V-Ray > V-Ray Decal
Parameters
Enabled – Enables the use of VRayDecal. See the example below on one of many decal applications.
Width – Specifies the width of the VRayDecal gizmo in centimeters.
Length – Specifies the length of the VRayDecal gizmo in centimeters.
Height – Specifies the height of the VRayDecal gizmo in centimeters.
Normal Angle – Specifies the angle to which the decal is applied onto the surface below.
Fade Out – Enables the use of a fade out angle to position the decal.
Fade Out Angle – Specifies the angle where the decal effect fades out. The Normal and Fade Out angles determine the start and end points of the decal effect onto the surface. Note that the Fade Out Angle should not be smaller than the Normal Angle. See the Fade Out Angle Example below for more information.
Order – Specifies a layering order when multiple VRayDecal gizmos are present. The decal with the larger Order value is set on top.
Mask – Masks the projected material based on a texture. The material must be applied to the VRayDecal.
Exclude – Specifies a list of objects that are not affected by the VRayDecal.
Example: Decal
The example shows the decal effect applied onto a motorcycle.
Example: Fade Out Angle
The Normal Angle is set to 40 degrees. The first image shows the decal effect without a Fade Out Angle. The second render has a Fade Out Angle set to 120 degrees. Note how the effect is closed between the Normal and Fade Out angles.
