I have a 3D door with some pattern
I can do the normal map for it
but when I try to bake the color or diffuse map unto a plane I don’t get anything in color
so is there some trick here to get it working ?
I get a black image !
The version doesn’t matter much.
You might be baking plane by mistake (which has a blue diffuse color).
Here is a gif how to bake color and normal (I forgot to add other material but you’ll just add same image texture node to it, select same color texture and then hit bake):
The reason you get this error is that you didn’t select image texture node in node editor.
Only for normal map baking, yes.
You want the colors of door, right? So, plane object is not involved in this.
Just select your door (object or edit mode doesn’t matter)
Create an image
Create an image texture node for both materials in your door and choose the image you created. (Don’t forget to select image texture node by left clicking!)
when you create image for each material
do you need to make a new image for each material or use same image then the first material ?
I never done this color diffuse one
cause I don’t do BGE game texturing
but in this project I have a big scene
with let say around 50 doors like that
and that creates like 500 000 verts
so may be i can save some verts using some color UV map and NOR map
Have you considered instancing the doors (left and right open) instead? When angles get as pronounced as this with high amount of screen realestate, especially of the materials have lots of glossy and low roughness, you should always consider doing it with geometry (Cycles). Using normal maps you can at close to glancing angles produce black responses from glossy, whereas with geometry it would get properly masked.
If doing overview shots only, then those black/darkened spots would be insignificant and I probably wouldn’t care. But for shots with door being big part of image, I’d do geometry based at least for grand angles. The door shown doesn’t appear to have 10000 verts, unless you plan to add lots of ornaments to it later.
I never have to do detailed “door works” in my projects so my doors tend to be vert friendly, and they’re also not the focus of what we do. But I still use instance groups to create them on a bigger office space.