Half-Life: ReSrced is a mod for Half-Life, Opposing Force and Blue Shift that gives the game HD textures upscaled from the original low-res textures using advanced AI-powered software. Combined with detail textures and support for a variety of HD model packs for Half-Life and its expansion packs, ReSrced makes the classic game look sharp and modern, while keeping true to the original aesthetic.
Half-Life: ReSrced's HD textures and detail textures in action. This screenshot also shows off the HD model texture support or the third party HD Pack v2 (aka Super Definition Pack) mod.