RenderUVAtlas - ComfyUI Built-in Node Documentation - ComfyUI

Renders a mesh’s UV layout as an image. Each connected UV region (chart) is filled with a distinct color, and chart boundaries are outlined in black on a dark gray background.

Inputs

Parameter	Description	Data Type	Required	Range
`mesh`	The 3D mesh whose UV layout will be rendered. The mesh must have UV coordinates; otherwise an error is raised.	MESH	Yes	-
`resolution`	The width and height, in pixels, of the rendered image (default: 1024).	INT	Yes	64 to 4096 (step 64)

Note: If the mesh has no UV coordinates, the node raises the error “mesh has no UVs to render. Run UnwrapMesh first.” If the mesh contains a batch dimension (3D UV or face arrays), only the first item in the batch is rendered.

Outputs

Output Name	Description	Data Type
`image`	The rendered UV atlas image, with each chart colored and chart boundary edges outlined in black.	IMAGE

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