True
The Rhun project, a graphics tool available on GitHub under developer vshvedov, consists of two components — an editor and a pixel renderer — that are built on the same x86-64 assembly core, according to the project's public repository.
The project's repository describes the editor and the pixel renderer as sharing a common core written in x86-64 assembly. The repository also hosts a 512-pixel project icon, indicating an asset structure typical of a maintained open-source tool.
Details such as target platforms beyond the x86-64 architecture, licensing terms, and release status are not specified in the reviewed source material. The exact division of responsibilities between the editor and the renderer within the shared core likewise remains unconfirmed.
For the Korean semiconductor and hardware community, the project offers a rare example of a graphics tool whose central processing core is written directly in x86-64 assembly rather than a higher-level language.
The claim that the editor and the pixel renderer share an x86-64 assembly core is True.