Work with transparency - when on, VRayDirt will take into account the opacity of the occluding objects. This can be used, for example, if you want to calculate ambient occlusion from opacity-mapped trees etc. When off (the default), occluding objects are always assumed to be opaque. Note that working with correct opacity is slower, since in that case VRayDirt must examine and evaluate the material on the occluding objects. Ignore Self Occlusion - when this option is on the object will not occlude itself. It will still be occluded by other objects in the scene. Environment Occlusion - when this option is checked V-Ray will use the environment when calculating the occlusion of areas that are not occluded by other objects. Occlusion Mode - allows you to specify the mode in which the dirt map is going to be calculated - Ambient occlusion - normal ambient occlusion will be calculated
- Reflection occlusion (Phong, Blinn, Ward) - reflection occlusion will be used. The difference between ambient and reflection occlusion is basically in the direction in which rays are traced. With ambient occlusion rays are traced in all directions uniformly while with reflection occlusion the direction depends on the viewing direction (just as when calculating reflections) and the spread of the rays depends on the Reflection glossiness and BRDF type used
Affect Reflection Elements - when checked the ambient reflection will affect the reflection render elements. This can be used to create reflection masks Glossiness - this parameter controls the spread of the rays traced for reflection occlusion. A value of 1 means that just a single ray is traced (just like when tracing clear reflections), smaller values make the spread of the traced rays. Render Nodes
This specifies a list of objects which will be affected by the V-Ray Dirt texture. Excluded object will not get occluded even if the texture is assigned to them. Affect Result Affect
This specifies a list of objects which will affect the calculation of the VRayDirt map. Excluded objects will be considered "invisible" for the calculations of the VRayDirt map. |