TRELLIS.2 (trellis-2) Complete Guide: Image-to-3D, PBR Textures, GLB Export

What is TRELLIS.2 (trellis-2)?

TRELLIS.2 (also written as trellis-2, trellis 2, or trellis.2) is a modern image-to-3D model that turns a single image into a textured 3D asset. In plain words: you give it a picture, it gives you a 3D model you can rotate, download, and use in your pipeline.

If you’re landing on trellis-2.com, the whole point is simple:

• Upload an image
• Generate a 3D model
• Export as GLB
• Use it in Blender / Unity / Unreal / Three.js

trellis-2 vs trellis 2 vs trellis.2 — do they mean different things?

They’re the same intent keywords people type in different ways:

• trellis-2: hyphen version (common in domains)
• trellis 2: space version (common in search)
• trellis.2: dot version (common in model naming)

On this site, we intentionally include all three so search engines and humans both understand this page is about the same thing: TRELLIS.2 image-to-3D.

How image-to-3D works on trellis-2.com (high-level)

Think of it like a “3D reconstruction + texture painting” workflow, but automated:

1. The model reads your image and guesses the object’s shape in 3D.
2. It builds geometry (the mesh) from that guess.
3. It generates PBR textures so the surface looks realistic.
4. You export a GLB so it works everywhere.

Best input images for TRELLIS.2 (trellis-2)

If you want higher success rate, use images like these:

• A single main object (not a busy background)
• Clear silhouette (strong contrast)
• Good lighting (avoid heavy shadows)
• Ideally alpha-masked / cut-out object (background removed)

Bad inputs usually look like:

• Multiple objects overlapping
• Very cluttered scenes
• Extreme motion blur
• Tiny object in the frame

Key settings you’ll see (and what they actually mean)

Even if the UI shows advanced sliders, the mental model is:

• Resolution (512 / 1024 / 1536): higher = more detail, slower, more GPU.
• Seed: same seed + same image = more repeatable results.
• Decimation target: lowers triangle count (lighter model, less detail).
• Texture size (1024 / 2048 / 4096): higher = sharper textures, larger files.

For most people:

• Start with 1024 resolution
• Texture 2048
• If you need max detail, go 1536 + 4096

Export workflow: GLB → Blender / Unity / Unreal

Blender

1. Import GLB: File → Import → glTF 2.0
2. Check scale, normals, and UVs
3. Optional: decimate / retopo / bake textures

Unity / Unreal

• GLB is a great interchange format.
• If you need FBX, import GLB into Blender first, then export FBX.

FAQ (quick answers)

Is TRELLIS.2 (trellis-2) open source?

The TRELLIS / TRELLIS.2 ecosystem is widely discussed as open research. This site (trellis-2.com) is an independent UI and content hub, not the model author.

Why does the “back side” sometimes look wrong?

Because a single image can’t show the hidden side. The model must predict / hallucinate the unseen area. For best results, use images with strong cues (symmetry, clear materials).

Can I use the 3D model for games?

Yes, but expect to do the same “game-ready” steps you’d do for any generated asset:

• reduce polycount
• check UVs
• fix materials
• create LODs if needed