The bias to use when computing shadows. Increasing bias can fix shadow acne on the resulting baked lightmap, but can introduce peter-panning (shadows not connecting to their casters). Real-time Light3D shadows are not affected by this bias property.

The energy multiplier for each bounce. Higher values will make indirect lighting brighter. A value of 1.0 represents physically accurate behavior, but higher values can be used to make indirect lighting propagate more visibly when using a low number of bounces. This can be used to speed up bake times by lowering the number of bounces then increasing bounce_indirect_energy.

Number of light bounces that are taken into account during baking. Higher values result in brighter, more realistic lighting, at the cost of longer bake times. If set to 0, only environment lighting, direct light and emissive lighting is baked.

The CameraAttributes resource that specifies exposure levels to bake at. Auto-exposure and non exposure properties will be ignored. Exposure settings should be used to reduce the dynamic range present when baking. If exposure is too high, the LightmapGI will have banding artifacts or may have over-exposure artifacts.

The distance in pixels from which the denoiser samples. Lower values preserve more details, but may give blotchy results if the lightmap quality is not high enough. Only effective if use_denoiser is true and ProjectSettings.rendering/lightmapping/denoising/denoiser is set to JNLM.

The strength of denoising step applied to the generated lightmaps. Only effective if use_denoiser is true and ProjectSettings.rendering/lightmapping/denoising/denoiser is set to JNLM.

If true, bakes lightmaps to contain directional information as spherical harmonics. This results in more realistic lighting appearance, especially with normal mapped materials and for lights that have their direct light baked (Light3D.light_bake_mode set to Light3D.BAKE_STATIC and with Light3D.editor_only set to false). The directional information is also used to provide rough reflections for static and dynamic objects. This has a small run-time performance cost as the shader has to perform more work to interpret the direction information from the lightmap. Directional lightmaps also take longer to bake and result in larger file sizes.

The color to use for environment lighting. Only effective if environment_mode is ENVIRONMENT_MODE_CUSTOM_COLOR.

The color multiplier to use for environment lighting. Only effective if environment_mode is ENVIRONMENT_MODE_CUSTOM_COLOR.

The sky to use as a source of environment lighting. Only effective if environment_mode is ENVIRONMENT_MODE_CUSTOM_SKY.

The environment mode to use when baking lightmaps.

The level of subdivision to use when automatically generating LightmapProbes for dynamic object lighting. Higher values result in more accurate indirect lighting on dynamic objects, at the cost of longer bake times and larger file sizes.

If true, ignore environment lighting when baking lightmaps.

The LightmapGIData associated to this LightmapGI node. This resource is automatically created after baking, and is not meant to be created manually.

The maximum texture size for the generated texture atlas. Higher values will result in fewer slices being generated, but may not work on all hardware as a result of hardware limitations on texture sizes. Leave max_texture_size at its default value of 16384 if unsure.

The quality preset to use when baking lightmaps. This affects bake times, but output file sizes remain mostly identical across quality levels.

Experimental: This property may be changed or removed in future versions.

If true, lightmaps are baked with the texel scale multiplied with supersampling_factor and downsampled before saving the lightmap (so the effective texel density is identical to having supersampling disabled).

The factor by which the texel density is multiplied for supersampling. For best results, use an integer value. While fractional values are allowed, they can result in increased light leaking and a blurry lightmap.

Scales the lightmap texel density of all meshes for the current bake. This is a multiplier that builds upon the existing lightmap texel size defined in each imported 3D scene, along with the per-mesh density multiplier (which is designed to be used when the same mesh is used at different scales). Lower values will result in faster bake times.

If true, uses a GPU-based denoising algorithm on the generated lightmap. This eliminates most noise within the generated lightmap at the cost of longer bake times. File sizes are generally not impacted significantly by the use of a denoiser, although lossless compression may do a better job at compressing a denoised image.

If true, a texture with the lighting information will be generated to speed up the generation of indirect lighting at the cost of some accuracy. The geometry might exhibit extra light leak artifacts when using low resolution lightmaps or UVs that stretch the lightmap significantly across surfaces. Leave use_texture_for_bounces at its default value of true if unsure.