Ren'Py does not currently support High Dynamic Range (HDR) rendering natively. While modern displays and engines (like Unreal or Unity) have moved toward HDR pipelines to handle brighter highlights and wider color gamuts, Ren'Py remains rooted in a Standard Dynamic Range (SDR) workflow.
Beatrix’s Bookshop. Dusty, cramped, smelling of cloves. renpy hdr
However, developers can achieve a high-fidelity look that feels like HDR by focusing on , rather than chasing the technical specifications of HDR10 or Dolby Vision. Ren'Py does not currently support High Dynamic Range
Ultrawide monitors HDR mode issues #6021 - renpy ... - GitHub smelling of cloves. However
Microsoft's Auto HDR can sometimes "upgrade" SDR games. However, because Ren’Py uses OpenGL or Angle (DirectX translation) by default, it may not trigger automatically.