this is my first message on this forum; I hope I am posting in the appropriate section.
I have recently started learning Blender by completing several short tutorials. I am now trying my hand at longer ones, such as “How to make a cave with Blender”, by Andrew Price on blenderguru (I reckon I cannot post URLs for now).
The first part of the tutorial (modeling) went well, but I am now facing issues with node-based material definition.
Possible but unlikely. 2.71 is old though, we’re at 2.73a, 2.74 test build is available so a new version right behind the corner.
Too many variables. Going to guess that the object has unapplied and non-uniform scale which might have messed with UV unwrap or displacement. Object scale is on the 3D view properties (hotkey N) and it should be 1,1,1. Ctrl+A -> scale to apply. Both obviously in object mode.
My signature has link to instructions on how to prepare and upload a .blend. What it doesn’t mention is that you can delete part of the model geometry if there is a lot of it and the file size is too big. Select an area that showcases the problem in edit mode, ctrl+i to invert the selection and delete faces.
This seems like a good hint. during the course of the tutorial I actually did a first bad unwrapping due to non-uniform scale, then fixed it in the way you suggested. But it seems like I actually kept the previous, bad unwrap.
I will try to rebuild my material node by node now than I have a cleaner unwrap, and see if it matches more closely the tutorial look.