Displacement

[scarabrae]

Hi again.

I've read the docs and still have questions about displacement.

1. Under V-Ray Mtl Common we have Displacement Distance
2. Under V-Ray Geometry Properties we have Displacement Amount

The questions I have are -

Is this a duplication of an option?

Are they different? If so, in what way?

Thanks

Pete

[vladimir.nedev]

These two options are multiplied together to get the final displacement distance.
They are different in the sense that one is per-material while the other is per-mesh.

I am not sure it was a good idea to have both of them...probably should have left only the material one.

Note that the displacement distance from the material multiplies the following values:
- displacement amount from geometry properties
- displacement shift from geometry properties
- water level from geometry properties
i.e. the displament amount/shift and water level are relative to each other.
So if you have 1m displacement amount, a water level of 0.5m will cut the displacement in half, irrespective of the displacement distance from the material, which could be 5mm for example.

Greetings,
Vladimir Nedev

[scarabrae]

Cheers, Vladimir.

[brijcharan]

I used the Material common one, and noted the render time was a fair bit longer when you enable the displacement.

[vladimir.nedev]

You can enable static displacement from the V-Ray Geometry Properties to improve the render time.
I will change the default in the future.

Greetings,
Vladimir Nedev