AMD新驅動封殺DX12異步運算:老卡用户發飆 - 3C
By Heather
at 2016-12-07T12:26
at 2016-12-07T12:26
Table of Contents
DX11時代,AMD被NVIDIA的產品力壓制,不過在Win10帶領業界進入DX12時代後
畫風出現了扭轉,AMD這兩代GCN架構的顯卡獲得了幅度方面絕對領先N卡的提升。
例子很多,比如市面上的7款DX12遊戲跑分、3D Mark TimeSpy測試等
這背後應當說有AMD多年的技術耕耘,如Mantle API、非同步計算等。
然而reddit網友稱,事實上,AMD在更新Crimson 16.9.2驅動之後,就關閉了老卡的非同
步計算特性支援。
Crimson 16.9.2驅動發佈於今年9月,當時優化的是《極限競速:地平線3》。
不支援的顯卡是GCN1.0架構的產品,也就是HD 7000/200/370系列,而GCN1.1/1.2和2.0則
正常
當然,老外也不是憑感覺意氣用事,Beyond3D有用戶跑了《奇點灰燼》
的benchmark發現,15.7.1驅動下非同步運算正常開啟,16.9.2就不行,導致繪圖渲染效
率降低。
這名reddit用戶則用16.3.1驅動對比了下,他用的是R9 200系普通卡
前者開非同步,幀數平均提升在3~5幀,而16.9.2上,幀數基本不變甚至降低。
雖然大家振振有詞,但幾乎不指望AMD會解決
因為早先有名用戶在AMD官方社區質疑為啥自己的GCN 1.0老卡玩《戰錘:全面戰爭》開不
了DX12
官方人員竟然回答:去問開發者……
雖然《奇點灰燼》不是很熱門的遊戲,但碰上較真的老外,肯定要刨根“憑什麼”
這麼看來的話,AMD這先給一樹棗再給一棒的做法還不如NV,費米卡含糊其詞,索性至今
也不給支持DX12。
AMD的做法是,GPU劃分出三條佇列,分別運行渲染、計算、複製任務,而且分別可達100%
滿載,互不影響
這樣的好處有三點,其一是可以實現更高的畫面播放速率,讓遊戲更加流暢
第二是在“虛擬實境”中的應用,它可以減少延遲;第三則可以帶來更好的圖像品質。
來源:http://news.mydrivers.com/1/510/510828.htm
NVIDIA:你也懂放生 AMD:嘻嘻,更正式去問開發者
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