ZBrush Tip: Bake Polypaint to Production-Ready Texture

Bake your Polypaint to a clean, production-ready texture with Tool > Texture Map > New from Polypaint for a fast, predictable handoff to your DCC or engine.

Before you bake

• Ensure you have UVs. If not, create them with UV Master (low subdivision level, Symmetry on if appropriate, use Control Painting to place seams, then check with Morph UV).
• Verify Polypaint detail. Polypaint is vertex-based: subdivide until brush strokes look crisp at working zoom before baking.
• Set your texture size in Tool > UV Map (2048, 4096, or 8192 as needed). Bigger maps reduce stair-stepping and improve gradients.
• FillObject a base color (Tool > Polypaint > FillObject) to avoid unpainted pixels and edge halos on UV borders.

Core workflow

• Switch to the highest subdivision level so ZBrush samples the densest Polypaint.
• Tool > UV Map: choose final resolution and, if your target requires, disable Smooth UV to keep borders aligned with bake targets.
• Tool > Texture Map > New from Polypaint to generate the diffuse/albedo texture directly from your vertex color.
• If your target app reads flipped V, use Texture Map > Flip V. Test a quick import in your DCC to confirm orientation.
• Export via Texture Map > Clone Txtr, then export from the Texture palette (PSD, PNG, or TIFF). Name per your pipeline convention.

For multi-SubTool or UDIM workflows

• Use ZPlugin > Multi Map Exporter for batch exporting. Enable Texture and set UDIM naming if your UVs span tiles.
• Increase Map Border/Padding (e.g., 16–32) in Multi Map Exporter to minimize seam visibility after mipmapping.

Quality and consistency tips

• Color consistency: Export in sRGB formats (PNG/TIFF/PSD). Disable automatic color transforms on import in your DCC to prevent shifts.
• Edge cleanliness: Keep UVs straight where possible and avoid heavy distortion; uneven texel density can exaggerate vertex-to-pixel interpolation.
• If subtle banding appears, either raise the mesh subdivision before baking or step up the texture size.
• For layered paint workflows, consolidate by baking at the end of your iteration, or use Layers for non-destructive color passes before baking.

Troubleshooting

• Visible seams: Check padding, verify there’s no unpainted base, and ensure UV islands aren’t extremely stretched. Re-bake after adjusting Map Border.
• Soft or blurry detail: Increase mesh subdivisions (for Polypaint fidelity) and/or export a higher-resolution texture map.
• Inverted or rotated textures: Use Flip V in ZBrush or invert vertically in your DCC; confirm gamma settings match your renderer.

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