Pipeline Integration

Metallic Indirect Fallback [URP]

Allows metals to be rendered as diffuse materials. This option is useful to prevent metals from appearing black when there is no source of reflections. It is identical to the Metallic Indirect Fallback checkbox in HDRP.

Performance impact: none

OFF

ON

Ambient Override [URP]

Defines whether Unity's native ambient lighting (e.g., Sky) or GI (e.g., APV) should be removed from the frame before applying HTrace SSGI.

Performance impact: small

OFF

HTrace SSGI is applied on top of existing APV, resulting in double indirect lighting

ON

APV is first removed from the frame (by activating Ambient Override) and then correctly "passed through" HTrace SSGI as a Fallback option

Multibounce [URP]

When enabled, HTrace SSGI calculates multiple "infinite" light bounces by using the previous frame's indirect lighting as input for the current frame. This results in brighter indirect lighting with more accurate color bleeding and less noise, but reduces the temporal responsiveness of GI, since multiple bounces take longer to update compared to a single bounce.

Performance impact: small

OFF

ON

OFF (Debug View)

ON (Debug View)