QUADIFY
By Anvil Interactive Solutions
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Quadify Ultra

Quadify Ultra is a professional AI-powered retopology add-on for Blender 5.0. It converts triangle and n-gon meshes into clean quad topology in one click, automatically routing each mesh to the most appropriate algorithm based on its geometry type.

Unlike the Base, Premium, and Pro editions — which use deterministic, rule-based workflows — Ultra's ML engine learns from every operation and continuously improves its routing decisions. After 30+ operations on your machine, recommendations are tuned to your specific mesh types.

Requirements

Quadify Ultra requires Blender 5.0 or newer. It will not run on Blender 4.x. NumPy and QuadriFlow are both included with Blender 5.0 and require no separate installation.

Installation

Download quadify_ultra.zip from your Superhive purchase. In Blender, go to Edit → Preferences → Extensions → Install from Disk, select the zip file, and enable Quadify Ultra in the extensions list. The Quadify Ultra tab will appear in the N-panel — press N in the 3D Viewport to open it.

Quick Start

Select a mesh object in Object Mode, then press Ctrl+Shift+Q or click the Quadify button in the panel. Ultra automatically selects the right algorithm for your mesh. The panel displays before/after statistics after each operation. Use Ctrl+Z to undo at any time — a backup is saved before every destructive operation.

If you're unsure which engine to use, click "Ask AI: How to handle this mesh" in the main panel (requires Anthropic API key in the Agent tab). The AI Mesh Advisor analyses your mesh and recommends the best engine and settings instantly.

Quick Remesh UI

The main panel uses two dropdowns to guide remesh decisions:

  • "What is your mesh?" — Scan data, AI-generated, Organic/character, Hard surface, Mixed
  • "What do you need?" — Best topology, Fast preview, Exact face count

The run button label updates live to show which engine and settings will be used before you click. "Exact face count" always routes to Voxel + QuadriFlow (fixed in v1.5.0).

Algorithms

Ultra includes seven retopology algorithms. The ML system routes automatically, but you can override the selection manually.

  • Smart — edge flip and greedy quad matching. Works on any mesh. Never moves vertices, so geometry is preserved exactly. Best for open panels such as car doors, fenders, and clothing.
  • Hard Edge Preserving — detects sharp feature edges first, then constrains quad generation within those boundaries. Best for CAD imports and boolean results where edge definition matters.
  • Dissolve + Requadify — dissolves coplanar edges to recover true panel topology, then requadifies. Best for CAD-style flat surfaces with many n-gons from arbitrary triangulation.
  • QuadriFlow + Transfer — field-guided remesh that generates globally consistent quad flow, then transfers UVs and vertex weights back from the original. Best for flat closed meshes and windshields.
  • Voxel Remesh + Transfer — voxel field into QuadriFlow pipeline for closed organic meshes. Handles broken topology, scan noise, and complex geometry. Smart UV Project runs after remesh in all cases (fixed in v1.5.0).
  • Full Remesh (QuadWild) — complete retopology using the bundled QuadWild Bi-MDF engine. Non-blocking with a live viewport HUD showing elapsed time and current phase. Press ESC to cancel cleanly. Four resolution presets — Draft (~8K), Medium (~18K), Fine (~40K), Ultra (~150K) — now produce genuinely different output densities (fixed in v1.5.0).
  • Instant Meshes — field-aligned remesh via the Instant Meshes engine. Requires the Instant Meshes binary path to be set in Settings.

When To Use Each Algorithm

  • Open curved panels (doors, fenders) → Smart
  • Flat open panels (windshields, hoods) → QuadriFlow + Transfer
  • CAD imports with n-gons → Dissolve
  • Boolean results with hard edges → Hard Edge Preserving
  • Organic or character meshes → Voxel Remesh
  • Scan and photogrammetry data → Voxel Remesh
  • Full character or organic retopology → Full Remesh (QuadWild)
  • High-genus topology (ironwork, lattice, filigree) → Voxel + QuadriFlow ("Exact face count") — QuadWild hangs on these regardless of face count

AI Mesh Advisor

Select any mesh and click "Ask AI: How to handle this mesh" in the main panel to get instant retopology advice tailored to that specific mesh. The advisor analyses face count, topology type, non-manifold edge count, and complexity, then recommends the best engine and settings. Advice history is saved per session — each entry is collapsible and copyable to clipboard. Requires an Anthropic API key set in the Agent tab.

Known Limitations

  • Shape keys cannot be transferred through remesh operations (QuadriFlow, Voxel Remesh, QuadWild). Bake shape keys to separate meshes before using these modes.
  • Meshes above ~500K faces may cause Blender to be temporarily unresponsive during Voxel + QuadriFlow processing. Manually reduce polycount first, or use the AI Advisor for guidance.
  • Meshes with high-genus topology (ironwork, lattice, filigree) cause QuadWild to hang regardless of face count. Use "Exact face count" (Voxel + QuadriFlow) for these mesh types instead.
  • Bake Texture from Original is experimental and produces inconsistent results on multi-material meshes.
  • Mirror modifier — a warning appears if detected; process one half of the mesh with the modifier unapplied, then re-apply the mirror.