Hands-On Challenge: Custom Meshes with GenAI

• Access the MeshGen tool within the Desktop Editor.
• Write effective prompts to generate 3D meshes.
• Select mesh complexity (Small, Medium, Large).
• Texture and save your generated models to the Asset Library.
• Integrate your custom meshes into your world scene.

What You'll Need:

• Access to the Meta Worlds Desktop Editor.
• An existing world project or a new one to work in.
• Familiarity with basic Desktop Editor navigation (opening panels, managing assets).

Challenge Steps:

1. Access the MeshGen Tool

• Open the Meta Worlds Desktop Editor.
• Open your world in the Desktop Editor.
• Locate and click the GenAI icon in the top toolbar to open the GenAI panel.
• Inside the GenAI panel, click the 3D model icon to switch to the Mesh Generation tool.

2. Generate Your First Mesh

• Choose a mesh size. Start with Small or Medium for this challenge.
• In the prompt box, type a description of an object. Let's try: "old wooden treasure chest with metal clasps".
• Click the Generate button. Wait a few moments for the preview shapes to appear.

3. Texture and Refine

• Review the generated shape previews.
• Hover over the shape you like best.
• Click Texture this model. The AI will apply textures based on your original prompt. You will be able to retexture on step 6.

4. Save Your Creation

• Once the texturing is complete and you're happy with the result, click Save model.
• By default, it saves to the ‘Gen AI Asset’ folder in your Asset Library. You can move it later if needed by right-clicking the asset and selecting "Move".

5. Implement in Your World

• Navigate to your Asset Library (usually found in a panel on the left or bottom).
• Find your newly saved mesh in the ‘Gen AI Asset’ folder.
• Drag and drop the asset directly into your world.
• Use the transform tools (move, rotate, scale) to position it where you want.

6. Retexture Your Model (Optional)

• If you need to change the texture of your model, follow these next points. Otherwise, skip this step.
• Click the wavy square icon to switch to the Texture Generation tool.
• Select your model and write in a new prompt. Try something like "cute purple wooden treasure chest with plastic clasps".
• Click the Generate button. Wait a few moments for the preview texture to appear.
• Click the “Save and apply texture” button to add the texture to your Assets folder.

7. Enhance the Scene

• Repeat steps 1-6 and create the following:
• • A wall
  • A floor
  • A wall decoration
  • A character (e.g., animal, person, mystical creature)

Level Up:

• Try generating a Large mesh with a more complex prompt (e.g., "moss-covered stone archway, ancient ruins style").
• Experiment with different keywords in your prompts (like "cartoony", "realistic", "low-poly") to see how they affect the style.
• Generate multiple related assets (e.g., a pirate ship, a cannon, a barrel) using consistent keywords to build a themed scene.
• Select your generated mesh in the scene, go back to the GenAI panel, and try the Texture option with a new prompt to change its appearance.

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