Node Material

[visualtracing__]

perfect, thanks for the explanation

[sirio76]

visualtracing__, connect the Bitmap to Occluded Color, not directly to the radius. This will enable you to adjust the radius using the slider. (see example)

Hi,
I think there's a bug in the dirt node.

Lets say that I want to give to the occluded and unoccluded surfaces two different color and a radius of 100cm, as you can see it works as expected:



But if I want to introduce some randomness in the radius by adding a bitmap or a procedural shader, I do not have the control over the radius anymore:



Of course this will work when using the standard material editor where we can add a bitmap to the radius and still get control over the radius:

[sirio76]

Using the float arithmetic node it will work but I think is very counterintuitive and can be very confusing especially for new users

[zhanet.georgieva]

Hi sirio76,

As mentioned earlier, you can control the radius when applying texture to this slot by utilizing the Float Arithmetic Node. It differs from the standard material editor, where this feature is designed for added convenience.

[jon_leeke]

Amazing, thanks so much zhanet.georgieva . I got there! Much to learn.

[zhanet.georgieva]

Great job, jon_leeke! Feel free to ask if you need more help.

[lukas_kostka]

Hi zhanet.georgieva, I am following the tutorial from the same author as mentioned above regarding procedural foam on ocean waves, but for me the Radius slot in a Dirt Node is not working to mask dirt scatter in the texture. I tried to use Maxon noise as well as random black and white texture and if I plug it into Radius the shader becomes black. Can you please advise me as well what am I doing wrong? What I need to achieve is to mask the dirt only so it has "patches" as in the grayscale texture. Thanks.

P.S. OK I just saw the page 2 of the discussion where the problem is explained as a bug, I will try the approach with Float Arithmetic Node.
BTW What does this node exactly do?

P.P.S I just tested it and the dirt mask works if pluged in Occluded color directly, with OR without the Float Arithmetic Node. Using this node does not change anything. Also with this node applied pluging it in the Radius slot does not work as well..

[zhanet.georgieva]

Hi lukas_kostka,

The Float Arithmetic Node performs various mathematical operations on float values. In your case multiplying the value of the Radius in the Dirt Node.

Please refer to the attached image for the correct setup.

If you have any further questions or need assistance with this setup, please let me know.