OneAtlas | One-Click Texture Atlas Automation

Preparing multi-part, multi-material 3D assets for Game Engines, AR/VR, WebGL, or Mobile shouldn't take 30 minutes of manual UV unwrapping and shader node setup per model.

OneAtlas v2.3.1 automates the entire optimization pipeline in Blender — combining multiple separate meshes and materials into 1 Merged Mesh • 1 Unified Material • 1 Baked PBR Texture Atlas safely and non-destructively.

Select Meshes → Click One Atlas → Done.

Manual texture atlas workflows usually require:
- Creating new AtlasUV maps across dozens of separate objects
- Separating multi-material faces so their UVs don't overlap
- Scaling UV islands manually to match 3D texel density
- Wiring up image texture nodes inside every material slot
- Baking Diffuse, Roughness, Metallic, Normal, Emission, and AO one by one in Cycles
- Joining meshes and rebuilding a clean Principled BSDF material

OneAtlas handles all of this automatically on safe working copies while preserving your original untouched objects inside a hidden Atlas_Backup collection.

• Automatically calculates the real-world 3D surface area (% share) of every object and material zone.
• Large hero surfaces automatically receive proportional high-resolution UV space, while tiny bolts, pins, or switches get compact UV space so zero pixels are wasted.
• Supports both 1-Click Automated Mode and 2-Stage Interactive UV Mode (Create Atlas UVs → Edit → Bake Textures).

• Automatically detects objects with multiple material slots ([2Mats], [3Mats]) and packs each material zone into its own non-overlapping UV region.
• Interactive Material UV Selector: Click any material slot directly in the OneAtlas panel while in Edit Mode to isolate, move, or scale that material's UV islands independently.

• UV Memory (Save UVs / Restore UVs): Save a snapshot of your UV layout before experimenting and restore it in 1 click.
• UV Placement & Transform Tools: Rotate 90°, Auto Rotate 90°, Fit to Bounds, Corner Anchor (Top/Bottom Left/Right), Align Object, and Stack Islands.
• Smart Re-Pack: Re-pack while keeping your manual island scale or re-pack using Smart 3D Texel Density.
• Split Mesh (Loose Parts): Built-in mesh splitter with camera-ray backface visibility filtering to separate complex kitbashed models cleanly.

• Bakes Diffuse (Base Color), Roughness, Metallic, Normal, Emission, and Ambient Occlusion (AO) in one pass.
• Smart Shader Mode (Auto Detect): Automatically handles both standard Principled BSDF materials and unlit/emissive shaders.
• Auto-Unpack to Disk (//Unpacked_Textures/): Automatically exports all baked .png maps into an Unpacked_Textures/ folder right next to your .blend file.

• Game Developers: Reduce multi-object props and environment assets to 1 Draw Call for Unreal Engine 5, Unity, and Godot.
• AR / VR / XR Developers: Create lightweight single-mesh, single-material assets for ARKit, ARCore, WebXR, Meta Quest, and Apple Vision Pro.
• WebGL & Mobile 3D: Export clean single-atlas glTF / GLB / FBX models for Three.js, PlayCanvas, and Babylon.js.
• 3D Marketplace & BlendKit Creators: Finalize multi-part models into clean, studio-grade single-material assets in seconds.

• Blender Compatibility: Blender 3.0 – 4.x – 5.x+ (Extension & Add-on compatible)
• Render Engines: Works with Cycles & EEVEE scenes (automatically uses Cycles for baking and restores your viewport afterward)
• Output Format: High-quality .png PBR maps automatically unpacked to //Unpacked_Textures/
• Workflow: 100% Non-Destructive (Atlas_Backup collection)
• Platforms: Windows, macOS (Intel & Apple Silicon), Linux