Optional ReadonlymaxMaximum pixels per invocation. Defaults to 1920 × 1080. Six RGBA16F attachments cost 48 bytes per pixel; Clustered DDGI + SSGI adds three matching baseline attachments (72 bytes per pixel total), excluding shared scene color/depth and resource-pool retention. Larger invocations fail before allocation, rather than silently lowering quality.
Optional ReadonlymaxMaximum projected three-sigma kernel radius, from 1 to 256 pixels. Defaults to 64.
Optional ReadonlynormalMinimum view-normal cosine accepted across the kernel, from 0 to 1. Defaults to 0.5.
Optional ReadonlysampleTaps per axis: 9, 17 (default), or 25. Two separable passes use exactly twice this count.
Bounded portable, full-resolution subsurface diffusion controls.