{"id":31544,"date":"2019-10-31T21:41:47","date_gmt":"2019-10-31T18:41:47","guid":{"rendered":"https:\/\/prohoster.info\/blog\/trassirovka-luchej-prishla-na-geforce-gtx-mozhete-ubeditsya-sami\/"},"modified":"2019-10-31T21:41:47","modified_gmt":"2019-10-31T18:41:47","slug":"trassirovka-luchej-prishla-na-geforce-gtx-mozhete-ubeditsya-sami","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/trassirovka-luchej-prishla-na-geforce-gtx-mozhete-ubeditsya-sami","title":{"rendered":"Le ray tracing est arriv\u00e9 sur GeForce GTX : vous pouvez le v\u00e9rifier vous-m\u00eame","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

\u00c0 partir d'aujourd'hui, le ray tracing en temps r\u00e9el est support\u00e9 non seulement par les cartes graphiques GeForce RTX, mais \u00e9galement par certaines cartes GeForce GTX 16xx et 10xx. Le pilote GeForce Game Ready 425.31 WHQL, qui dote les cartes graphiques de cette fonctionnalit\u00e9, est d\u00e9j\u00e0 disponible en t\u00e9l\u00e9chargement sur le site officiel de NVIDIA ou peut \u00eatre mis \u00e0 jour via l'application GeForce Now.<\/p>\n

\"Le<\/p>\n

La liste des cartes graphiques prenant en charge le ray tracing en temps r\u00e9el a \u00e9t\u00e9 enrichie par les cartes graphiques GeForce GTX 1660 Ti et GTX 1660, Titan Xp et Titan X (Pascal), GeForce GTX 1080 Ti et GTX 1080, GeForce GTX 1070 Ti et GTX 1070, ainsi que la version GeForce GTX 1060 avec 6 Go de m\u00e9moire. Bien s\u00fbr, le ray tracing fonctionnera ici avec certaines limitations par rapport aux cartes graphiques GeForce RTX. Plus la carte graphique est ancienne, plus ces limitations seront importantes. Cependant, le fait que m\u00eame les propri\u00e9taires de la GeForce GTX 1060, qui n'est pas la plus puissante, puissent \u00ab toucher \u00bb \u00e0 cette nouvelle technologie est r\u00e9jouissant.<\/p>\n

\"Le<\/p>\n

Alors que les cartes graphiques GeForce RTX poss\u00e8dent des unit\u00e9s de calcul sp\u00e9cialis\u00e9es (c\u0153urs RT) qui assurent l'acc\u00e9l\u00e9ration mat\u00e9rielle du ray tracing, les cartes GeForce GTX n'ont tout simplement pas de tels \u00e9l\u00e9ments. Par cons\u00e9quent, le ray tracing est impl\u00e9ment\u00e9 via l'extension DXR pour Direct3D 12, et le traitement des rayons sera g\u00e9r\u00e9 par des shaders de calcul standard sur le groupe de c\u0153urs CUDA.<\/p>\n

\r\n \"Lire\r\n
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Cette approche ne permettra bien s\u00fbr pas aux cartes graphiques bas\u00e9es sur les processeurs Pascal et les Turing inf\u00e9rieurs d\u2019atteindre le m\u00eame niveau de performance en ray tracing que les mod\u00e8les de la s\u00e9rie GeForce RTX. Les diapositives publi\u00e9es par NVIDIA montrant les r\u00e9sultats des tests de performance de diverses cartes graphiques utilisant le ray tracing d\u00e9montrent une \u00e9norme diff\u00e9rence entre les mod\u00e8les GeForce RTX et GeForce GTX.<\/p>\n

<\/center>
\n \"Le <\/p>\n

Par exemple, dans le jeu Metro Exodus, o\u00f9 le ray tracing assure un \u00e9clairage global, aucune des cartes graphiques GeForce GTX n'a \u00e9t\u00e9 capable d'assurer un FPS acceptable. M\u00eame le fleuron de la g\u00e9n\u00e9ration pr\u00e9c\u00e9dente, la GeForce GTX 1080 Ti, n'a r\u00e9ussi \u00e0 afficher que 16,4 images par seconde. En revanche, dans Battlefield V, o\u00f9 le ray tracing ne fournit que des r\u00e9flexions, le fleuron de la g\u00e9n\u00e9ration Pascal a tout de m\u00eame r\u00e9ussi \u00e0 atteindre 30 FPS.<\/p>\n

\"Le <\/p>\n

Cependant, NVIDIA a test\u00e9 les cartes graphiques dans les param\u00e8tres graphiques les plus \u00e9lev\u00e9s, avec une intensit\u00e9 maximale de ray tracing et en r\u00e9solution 2560 \u00d7 1440 points. En d'autres termes, les conditions \u00e9taient, pour le dire suavement, loin d'\u00eatre id\u00e9ales : la GeForce GTX 2060 obtenait en moyenne un peu plus de 34 images par seconde dans Metro Exodus. Pour atteindre un FPS \u00ab jouable \u00bb sur des cartes graphiques plus anciennes, il faudra r\u00e9duire la r\u00e9solution et la qualit\u00e9 graphique. Mais ce sont avant tout les r\u00e9glages de l'intensit\u00e9 de ray tracing qui influenceront leur performance.<\/p>\n

\"Le<\/p>\n

Rappelons qu'\u00e0 ce jour, le ray tracing est disponible dans trois jeux : Battlefield V, Metro Exodus et Shadow of the Tomb Raider. Il est \u00e9galement disponible dans trois d\u00e9mos : Atomic Heart, Justice et Reflections. Tant dans les jeux que dans les d\u00e9monstrations, on nous propose diff\u00e9rentes fa\u00e7ons d'utiliser le ray tracing. Dans certains cas, il est responsable des r\u00e9flexions et des ombres, et dans d'autres, de l'\u00e9clairage global.<\/p>\n

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Source : 3dnews.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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