Exporting for Real-Time Engines

Select all objects.

• F3 → “Convert to Mesh”

OR

• Object Mode → Object → Convert → Mesh

This applies all modifiers (including bevel) destructively.

If you prefer manual control: Select one → Modifier tab → Apply Repeat for all (less efficient).

Select all objects. Select one last as active (it becomes the base object)

→ Ctrl + J

All objects become one mesh.

Clean-up:

• Check for duplicate vertices
• Edit Mode → A → M → By Distance
• With everything still selected
• SHIFT + N to recalculate normals

Now that it's one object:

• Edit Mode → A → U → Smart UV Project

Adapt projection method if needed for geometry.

Adjust angle limit if needed.

Open UV Editor and confirm:

• No overlapping islands
• Good space usage

If you want optimal packing: UV → Pack Islands

Switch to Cycles (baking only works in Cycles).

In Shader Editor:

• Add Image Texture node
• Click New
• Choose resolution (512 - 2048 or 4096)
• Name it “Object_Baked_BaseColor”

Bake Base Color (Albedo)

Render → Cycles

Bake Type: Diffuse

Disable:

• Direct
• Indirect
• Leave only Color checked

Press Bake.

Save the image afterward in Image Editor.

Repeat the process for Normal Map:

• Create new Image Texture → “Object_Baked_Normal”
• Select that node
• Bake Type → Normal
• Space → Tangent
• Bake

Repeat the process for Roughness (if needed)

• Bake Type → Roughness

Now create a clean Principled BSDF:

• Plug BaseColor texture into Base Color
• Plug Normal texture → Normal Map node → Principled Normal
• Plug Roughness texture into Roughness

Remove all procedural nodes.

You now have a lightweight material that works in any engine.

Object Mode:

Ctrl + A → Apply Rotation/Scale. In most cases don't apply location if your object is not an independent asset placed at world origin.

GLTF likes clean scale = 1, rotation = 0.

Game engines prefer clean transforms.

Also Shift + N → Recalculate Normals.

Game engines like clean normals.

For example when a window is applying a difference boolean on a wall for easy placement

Recommended Order:

• Finish modeling
• Apply Boolean on wall (for window cutout)
• Clean topology
• Apply bevel
• Join bricks (if needed)
• UV unwrap
• Bake
• Apply transforms
• Export