How can I use emission type on only one face of an object like… Just take an example of our default cube I want to make one of its face looks like it emitting light how can I do that… ?
As when I try to change material of that face from principle BSDF to emission type then whole object start emitting light rather than that one face.
Give the face a different material. In edit mode. One object does not have to be only one material. Create a second slot and material, then in edit mode select the face you want different, select the new material and hit the ‘assign’ button.
maybe you go too fast, how to do this will be explained. But here we go!
You can assign multiple textures to a single object like your cube.
Add many textures as you like to the object.
then go into EDIT mode.
Select the face you want to have a texture.
Select texture and press ASSIGN below this texture panel.
Repeat this for other textures.
one of your textures, can be emissive (shines light).
But I’m unsure if EMMISIVE will work in principle shader BDSF.
A time ago it didn’t work. And check for Eevee / Cycles differences.
You can ofcouse add an emmisive shader to your texture node layout.