eric-venti-seeds/sphere-light-render-comfyui

Sphere-Light-Render-ComfyUI is a small custom node for ComfyUI, a visual node-based interface for running AI image generation models. Its job is narrow and specific: it renders a 1024 by 1024 pixel image of a sphere lit from a chosen direction, which is then used as a reference so an AI image model knows which way sunlight should be coming from in the image it generates. It is meant to be paired with a companion model called Sun Direction Lora, built for a text-to-image model named Flux 2 Klein 9B. A Lora is a small add-on file that adjusts how a larger AI model behaves without retraining the whole thing, and in this case it teaches the model to follow the lighting direction shown in the sphere image this node produces. The Lora itself is not included in this repository. It has to be downloaded separately from a linked Hugging Face page. Installing the node is a matter of cloning the repository directly into ComfyUI's custom_nodes folder and restarting ComfyUI. The README states that the core node needs no additional Python packages beyond what ComfyUI already provides. The README is quite short and does not go into detail about the node's internal settings, what light angles or intensities can be configured, or how exactly the sphere image should be wired into a larger ComfyUI workflow alongside the Lora. Anyone using it would likely need to look at the node's inputs directly inside ComfyUI or examine the linked example images to understand the full range of options.