Microsoft détaille DirectX Raytracing 1.2

À l'occasion de la GDC 2025 Microsoft a détaillé les avancées de son API DirectX Raytracing 1.2. Le géant précise que cela est dû à de nombreuses collaborations avec des géants du secteur, tels qu'AMD, Intel, NVIDIA et Qualcomm...
DXR 1.2 introduces two revolutionary technologies: opacity micromaps (OMM) and shader execution reordering (SER), both of which deliver substantial leaps in raytracing performance:

- Opacity micromaps significantly optimize alpha-tested geometry, delivering up to 2.3x performance improvement in path-traced games. By efficiently managing opacity data, OMM reduces shader invocations and greatly enhances rendering efficiency without compromising visual quality.
- Shader execution reordering offers a major leap forward in rendering performance — up to 2x faster in some scenarios — by intelligently grouping shader execution to enhance GPU efficiency, reduce divergence, and boost frame rates, making raytraced titles smoother and more immersive than ever. This feature paves the way for more path-traced games in the future.
Microsoft mise donc sur l'optimisation de la géométrie et des shaders afin d'obtenir des gains substantielles en Ray Tracing et Path Tracing. […]
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