Hi, After you remove all the shadow information from a diffuse, the non-shadowed area are still lit by the sun. In case we only have the diffuse and no object space normal/AO and such maps is there a rule of thumb in place there for making the lit textures more unlit/overcast-ish ?
The tree likely does have tiling, its just used in combination with a normal map for the trees volume. Combining two normal maps usually means that the diffuse output us multiplied, and means the diffuse has to be RGB 0.5 darker.
Modelling looks good. But I think the main issue is that you have way to much information in your diffuse. Metal is defined by the spec/reflect/glossiness and putting too much info into your diffuse takes away from those.
Photoshop and i create normal map in quixel.I saw your portfolio your diffuse map looks very good compared to mine.It looks like 3D, i mean more realistic.How i create that kind of diffuse map.
yes. Grumble grumble. turn you spec map into a mask rather than bitmap put the spec map in one slot, and the diffuse alpha in te other you can reuse the diffuse texture, just use the alpha component
You can load up a diffuse texture and bake that in xnormal, as long as your highres has uvs etc, auto uvs in zbrush should be fine. XN doesn't have any way to bake vertex colors to diffuse AFIAK.
Top tip of the day™ - Metallic (or electrically conductive) objects have a colour specular map, generally a similar colour as the diffuse. Non-metallic objects tend to have a white specular map (or even an inversed diffuse map in the spec'). :)
Your specular map really lacks contrast, and is missing the details like the scratches wich should be stronger in the specular than in the diffuse. Try a combination of: Dark scratch in the diffuse and strong/bright in the specular. This works for metal in general quite good.
Window > Relationship Editors > UV Linking , then just pick either texture centric or UV centric. So, for instance if you have a blinn with a diffuse, and transparency texture, you can link the diffuse to one UV set, and the transparency to another.
Your spec is much more important then your diffuse here. Make sure that you are creating them at the same time. Your diffuse details will be relatively light on the wear and tear. Alot of your detail will just be unique to your spec.