The discussion arose on X in a thread about NVIDIA RTX Hair technology for more realistic hair rendering. Later, the conversation shifted to ray tracing. An enthusiast under the nickname LeviathanGamer, interested in processor architecture and games, said that Sony and Microsoft are aiming to support it, although AMD is "lagging behind." According to him, the basis of progress will be fast matrix mathematics: "RDNA 4 has already laid the foundation by 90%." He also listed steps that could accelerate RT: double acceleration of intersection checks, combining LDS/L0 cache, a dedicated stack and scene traversal control unit, hardware sorting by coherence, hardware decompression of geometry by three coordinates.
Later, insider Kepler L2 commented on the Neogaf forum: "AMD already has all this and more." But in response to a question about prospects, he added: "We are two decades away from ray tracing without compromises."
According to him, Sony is actively working on accelerating ray tracing in PS6, placing more emphasis on it than on increasing rasterization performance.