How can I make transparent line 3d?

[Garryflop]

I created a scene with Draw_Line
And now I want to make the line transparent, but when I put Color(0,0,0,0.3), it does not become like that

[DmitriySalnikov]

Change the project setting debug_draw_3d/settings/3d/rendering/render_mode to transparent, in this case transparency will be taken into account. But also when using transparent material, sorting of objects by distance to the camera does not work, which leads to artifacts.