Introduction to UV Mapping in Blender 2.8 - Blender Tutorial | Beginner to Advanced


January 12, 2019

Introduction to UV Mapping in Blender 2.8

introduction to uv unwrapping in blender 2.8

Hello friends in this tutorial you will know what is UV Mapping and how to do it in Blender 2.8. So let's start. In this tutorial we will UV Unwrap the Chair we have modeled before. You can see the tutorial here.

What is UV Mapping?

In simple language UV Mapping is a process of projecting a 2D image to a 3D object's surface for texture mapping. The "U" and "V" simply means direction in 2D space like X, Y and Z in 3D space. You can't paint directly on the 3D model. The 3D model should be cut into a 2D flat surface. For example take World map. Our earth is a sphere but we have cut the sphere into a flat surface, that we call map.

In the same way we will create a flat surface version of the chair we have modeled before. The flat surface version of any model is called a UV Map and the process is called UV Mapping or UV Unwrapping. Later we will export this UV map to a different program so that we can paint on it and bring the texture again in Blender 2.8 and apply the texture to the model with materials. So now learn how to UV Unwrap in Blender 2.8.

What will we cover today?

The UV Editing Workspace in Blender 2.8

Blender 2.8 uv editing workspace

Blender 2.8 has a nice workspace only for UV Editing. In this workspace everything is arranged for UV Editing. In this workspace you can see two screens. The right side is the 3d model and its in the edit mode and left one is flat surface version of the 3D cube. In Blender 2.8 all default models like cube, sphere etc are already UV Mapped. But if we edit the cube then we have to  unwrap it again.In this tutorial we will UV Unwrap the chair we made before. So open the file by going to File > Open and select the file where you save it  and click on Open. After that go again in UV Editing workspace.

Marking Seams

So now we will mark some seams in the model. First go to edge selection mode by pressing 2 on keyboard. Then select the edges where you want to cut it.Then press CTRL + E and select Mark Seam from the list. You can now see that the edges gone red which are marked seam.  In this tutorial I am using a add-on so that you can see what keys I am pressing in Blender. Here is the link If you need it. Now check the below video to see how to Mark Seams in Blender 2.8.

UV Unwrapping

After you selected all edges and marked the seams. Now select all Edges by pressing A on your keyboard. After that just press U on your keyboard. It will open a Unwrapping Menu. From there select Unwrap. Now you have successfully created your UV map from the Chair model. See the below video for detailed explanation. 

Smart UV Unwrapping

In Blender 2.8 you don't need to manually select the edges and marked them seams and Unwrap the model. Blender 2.8 will do the job for you. This is not fully controllable but it will do the job for you for simple model. You can try it, its really simple. You can always press CTRL + Z to Undo all your work. In the below video you will see how its done. 

So now you have learned how to unwrap a model in Blender 2.8. In the later tutorial I will show you how you to texture the chair in Gimp or any other painting program.

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