Join Now

Snow bump doesn’t look right when mixed with other bumps

Forum Archive › Snow bump doesn’t look right when mixed with other bumps

Viewing 6 posts - 1 through 6 (of 6 total)
  • Author
    Posts
  • July 15, 2024 at 4:59 am #18300
    Tania Argiolas
    Participant

      Hi, working on the snow, I made the material and it went alright. Then I mix the bumps and something doesn’t look right with the values and i don’t understand where I am going wrong.

      I also tried adding a map range right after the noise texture for the snow placement and nothing it seems like the bumps for the textures are not so compatible together so I tried with a map range for the noise texture bump and it seems a little better, but they won’t mix.

      Thank you for the help!

      July 15, 2024 at 5:37 am #87414
      Adrian Bellworthy
      Participant

        Hey @tatasarts,
        It is hard to see where you may have gone wrong, because of the external image viewer.
        But I can see you are using a later version of Blender. Some behaviors may be a little different, exact numbers as in the course will not get the same result. Notably the lack of a Musgrave texture and the color mix nodes have changed, as well as the Principled BSDF.

        I also notice you are not using any subsurface…
        This can make a difference to the look of the snow.

        It also looks like you may have an issue with the leaves, they look like they are using a negative normal/bump.

        Try laying out the nodes as you see them on the screen, this helps to identify any missing nodes or connections, and to tweak values based on the video to see what does what.

        If you can share your file via dropbox, google drive or similar we can take a closer look.

        July 15, 2024 at 7:07 am #87415
        Tania Argiolas
        Participant

          Okay, thank for the response Adrian!

          I knew I wasn’t using subsurface but I didn’t know it would change the result drastically!

          Yeah I know about the Musgrave Texture missing in Blender 4, but I found a way to use the noise as Musgrave.

          Screenshot (25).png

          Definitely better than before, there’s still some small adjustments to make but in the end the problem was that the map range of the dirt noise and the leaves was really cranked and, beacuse of that, I couldn’t put the bump of the snow above of everything.

          Screenshot (23).pngScreenshot (24).png

          July 15, 2024 at 8:03 am #87416
          Adrian Bellworthy
          Participant

            Excellent!
            Awesome job problem solving the issue, problems with shader nodes can be as simply as a connection disconnected, a value not what you thought it was.
            Double checking will usually solve most problems.

            July 15, 2024 at 10:37 am #87417
            Martin Bergwerf
            Participant

              The Musgrave Texture isn’t really gone, but just incorporated into the Noise Texture Node, as @tatasarts has already figured out.

              You can use a conversion, if you want to match numbers from a tutorial, but I recommend just using your eyes to get the result you want.

              The default Musgrave translates in 4.1 to a Noise Texture with a Roughness of 0.250 and a Detail of 1.000.

              Increasing the Dimension to 4.000, would mean decreasing the Roughness of the Noise to 0.0625.

              In fact, let’s get this over with and give a formula for the conversion. This is what I came up with:

              Musgrave with a Detail of d, a Dimension of m and a Lacunarity of l converts to a
              Noise with a Detail of (d – 1) and a Roughness of 1/(l^m) (and a Lacunarity of l, obviously).

              July 15, 2024 at 11:17 am #87418
              Adrian Bellworthy
              Participant

                Yeah! Totally obvious… 🤯

              • Author
                Posts
              Viewing 6 posts - 1 through 6 (of 6 total)
              • The topic ‘Snow bump doesn’t look right when mixed with other bumps’ is closed to new replies.