Microsoft has announced DirectX Raytracing 1.2 at the GDC conference with claims of "game changing ... technologies rather than introducing new features and so may not be the ray-tracing performance ...

Microsoft says DXR 1.2 offers up to a 2.3x performance boost in ray tracing games. DXR 1.2 includes shader execution reordering and opacity micromaps. These features orginally debuted with Nvidia's ...