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Comparaison de la luminance (en fausses couleurs) des graphismes d'un jeu en fonction des modes de rang dynamique (SDR vs Auto HDR vs HDR natif) \/ Cr\u00e9dits : Microsoft<\/figcaption><\/figure>\n

Microsoft est en train de porter une fonctionnalit\u00e9 majeure des Xbox Series X\/S dans Windows 10 : le Auto HDR<\/a>. Vous connaissez sans doute le HDR (haut rang dynamique) une technologie de reproduction de l'image<\/a> qui rend plus finement l'\u00e9tendue de la luminance et des couleurs, pour tirer parti des \u00e9crans dot\u00e9s d'une vaste \u00e9tendue colorim\u00e9trique et de contrastes. Le r\u00e9sultat, ce sont des images beaucoup plus vibrantes, riches, r\u00e9alistes et d\u00e9taill\u00e9es<\/strong>, y compris dans les sc\u00e8nes tr\u00e8s sombres. Le rendu HDR met en effet en valeur autant les d\u00e9tails dans les zones les plus sombres que ceux des zones les plus lumineuses – sans oublier tout ce qui se trouve entre les deux.<\/p>\n

Normalement, pour prendre en charge le HDR, un jeu doit \u00eatre sp\u00e9cifiquement con\u00e7u pour cela. Or, avec les Xbox Series X\/S Microsoft a lanc\u00e9 une fonctionnalit\u00e9 dop\u00e9e \u00e0 l'IA, baptis\u00e9e Auto HDR<\/strong>. L'id\u00e9e c'est que la console est capable d'augmenter le rang dynamique de chaque image \u00e0 la vol\u00e9e, pour un rendu plus proche d'un jeu qui aurait \u00e9t\u00e9 cod\u00e9 pour du rendu HDR.\u00a0 Microsoft souligne que sa technologie ne permet pas d'atteindre l'\u00e9tendue dynamique permise par du HDR natif<\/strong>. Mais comme vous pouvez le voir dans l'illustration en Une de cet article, les am\u00e9liorations sont r\u00e9elles, au point de rendre des titres m\u00eames anciens plus percutants<\/strong>.<\/p>\n