What is comfyui-bss_flsampler?

FLSampler is a custom add-on for ComfyUI, a popular tool for generating images with AI. Standard image generators apply the same processing uniformly across an entire image, which can produce blurry textures in some areas or over-sharp artifacts in others. FLSampler takes a different approach inspired by how human eyes work: the center of your visual field is sharp and detailed, while the periphery is less so. The sampler uses that idea to focus detailed processing only on the parts of an image that are actively changing and forming structure. At each step of the generation process, the sampler computes which regions of the image are changing most, creates a soft focus map for those zones, and applies two enhancements there: a sharpening pass that clarifies edges and object boundaries without creating halos, and a micro-noise injection that resolves into fine surface textures like skin, fabric, or hair. The focus map smooths gradually between steps rather than jumping around, which produces more natural results. Both the finished image and the focus map itself are available as outputs, so you can preview exactly where the sampler directed its attention during generation. The node replaces the standard KSampler node in ComfyUI workflows and introduces a small set of controls. Fovea strength adjusts how much texture detail is injected. Sharpness controls edge clarity. Mask inertia sets how quickly the focus zones shift between steps. Standard controls for denoising strength, generation steps, and guidance scale are also present. The README also describes a premium visual theme built into the node's interface: a dark graphite background with gold-colored sliders, knobs, and borders. Installation involves cloning the repository into ComfyUI's custom nodes folder and restarting the application. The project is all-rights-reserved copyright, not open-source, and unauthorized copying or redistribution is explicitly prohibited.