Static lighting
Baker
Bake lightmaps and probe volumes directly in Unreal.
- Separate Fast and Full modes
- Spectral, Intel OIDN, or firefly denoising
- Uncompressed, BC7, or compact output
Built for baked lighting
The go-to solution for light baking in Unreal Engine 5.
Shape the light. Bake it into your world.
Prepare lightmaps, place probe fields, and build your lighting in one Unreal workflow. Spectral gives you control over where the detail goes, how the bake is filtered, and how much lighting data your scene uses.
Explore the baking workflow
Prepare your scene
Generate lightmap UVs and set consistent surface detail.
Bake with control
Choose resolution, sampling, and denoising for the result you need.
Light the space, too
Use baked probe fields for moving objects, with fog and capsule lighting on supported renderers.
Trailer
See Spectral in action
Spectral trailer
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Spectral systems
Lighting tools that work together
Spectral covers the path from preparing meshes and placing lighting fields to baking, shading, atmosphere, and final inspection.
Global illumination
Probe Fields
Place lighting detail only where the scene needs it.
- Density, fade, and overlap controls
- Bilinear or bicubic interpolation
- Movable fields and prefab volumes
UVs and density
Lightmap Tools
Generate UVs and keep lightmap detail consistent.
- xAtlas packing and channel controls
- Density measured in texels per meter
- Chart denoising and seam stitching
Soft static shadowing
Baked Shadows
Bake directional shadows with controlled softness.
- Static and movable caster support
- PCSS quality and softness controls
- Near and far sampling controls
Atmosphere and grounding
Fog and GTAO
Light local volumes and volumetric Exponential Height Fog from probes.
- Direct, emissive, bounced, and ambient fog
- Density, color, height, and fade controls
- Four GTAO quality levels with denoising
Look development
Diagnostics
Inspect lighting in the editor or at runtime.
- Fullbright view in editor and packaged games
- Probe, density, and fog visualizers
- Multiple built-in tone operators
Scene systems
Captures and Prefabs
Reuse baked lighting and reflection setups.
- Editable box reflection captures
- Embedded lightmaps and probe fields
- Optional reflection rebuilds after baking
Movable character shadows
Capsule Lighting
Use baked probes to ground movable characters in the scene.
- Probe-driven direction, spread, and strength
- Unreal Stock, Realistic, or Grounded modes
- Adjustable ground bias for stronger contact
Real editor workflow
Spectral inside Unreal
Baking, rendering features, diagnostics, memory, and setup all live in one editor panel. Select a view to inspect the real interface.
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