Texture Painting - How to paint in precision?

James

I always wonder can software like armor paint, surface painter, paint in precision?
Like for example painting a straight line or a straight curve.

lilweep

Can only speak to Substance Painter.  You can paint with a brush then hold Shift in Substance Painter (just like Photoshop) to connect a straight line between start and end point. In substance painter, you can paint in various projection spaces, like surface tangent wrap, UV, camera projection, etc, so the line you paint will be straight in that chosen space you are painting the line in. Typically you would do it in Tangent Wrap projection mode since that is representing the 3d surface.

You can also make a straight line in another program and then add as new layer.

Texel density of your UV set up will play a role in how detailed you can make anything in a texture painting program