NVIDIA顯卡爆發式飛躍揭秘:悄然上平鋪式 - 3C

By Todd Johnson
at 2016-08-02T09:57
at 2016-08-02T09:57
Table of Contents
http://news.mydrivers.com/1/493/493738.htm
NVIDIA顯卡近些年的性能飛躍是有目共睹的,架構也在不斷演進:特斯拉、費米、開普勒
、麥克斯韋、帕斯卡……那麼,除了架構設計改進、工藝頻率提升、加入新功能之類的,
NVIDIA還有什麼秘密嗎?
顯然是的,畢竟誰都不會把自己的所有家底都亮出來,比如說麥克斯韋架構,我們知道它
SM體系大幅調整從而提高利用效率、互連功耗損失降低、二級緩存容量顯著增大、晶體管
底層做大量優化,但是NVIDIA仍然隱藏了一項重要信息。
很長時間以來,一直有人懷疑,NVIDIA在麥克斯韋架構內使用了一些來自移動端的能效管
理技術,畢竟它是NVIDIA第一個以移動端為優先的GPU架構。
Real World Tech的技術大牛David Kanter經過一番挖掘之後,主要是研究了一些處理器
三角形光柵化的DirectX代碼,終於發現了其中的秘密。
原來,NVIDIA在麥克斯韋架構中悄然加入了平鋪式渲染(Tile Based Render),從而改變
了三角形處理方式。
PC端顯卡一直以來都在使用即時模式渲染(Immediate Mode Render),對整個畫面統一進
行光柵化處理,性能突出,但需要消耗大量內存和電力。
平鋪式渲染也並不是新鮮事物,不過長期用於移動GPU,Imagination PowerVR、ARM Mali
都在用。它會將一副畫面分割成不同區塊,然後一塊一塊地進行光柵化處理,而且基本靠
GPU就能完成,很省內存很省電。
顯然,NVIDIA找到了在PC GPU中使用平鋪式渲染的方法,而且克服了它的負面影響以及兼
容性問題,但具體細節必然是商業機密,就無從知曉了。
麥克斯韋架構的GTX 700/900系列顯卡能效提升巨大,平鋪式渲染顯然功不可沒。
原文出處:http://www.realworldtech.com/tile-based-rasterization-nvidia-gpus/
--
開放下面推文「快推!不然別人以為我看不懂」
--
NVIDIA顯卡近些年的性能飛躍是有目共睹的,架構也在不斷演進:特斯拉、費米、開普勒
、麥克斯韋、帕斯卡……那麼,除了架構設計改進、工藝頻率提升、加入新功能之類的,
NVIDIA還有什麼秘密嗎?
顯然是的,畢竟誰都不會把自己的所有家底都亮出來,比如說麥克斯韋架構,我們知道它
SM體系大幅調整從而提高利用效率、互連功耗損失降低、二級緩存容量顯著增大、晶體管
底層做大量優化,但是NVIDIA仍然隱藏了一項重要信息。
很長時間以來,一直有人懷疑,NVIDIA在麥克斯韋架構內使用了一些來自移動端的能效管
理技術,畢竟它是NVIDIA第一個以移動端為優先的GPU架構。
Real World Tech的技術大牛David Kanter經過一番挖掘之後,主要是研究了一些處理器
三角形光柵化的DirectX代碼,終於發現了其中的秘密。
原來,NVIDIA在麥克斯韋架構中悄然加入了平鋪式渲染(Tile Based Render),從而改變
了三角形處理方式。
PC端顯卡一直以來都在使用即時模式渲染(Immediate Mode Render),對整個畫面統一進
行光柵化處理,性能突出,但需要消耗大量內存和電力。
平鋪式渲染也並不是新鮮事物,不過長期用於移動GPU,Imagination PowerVR、ARM Mali
都在用。它會將一副畫面分割成不同區塊,然後一塊一塊地進行光柵化處理,而且基本靠
GPU就能完成,很省內存很省電。
顯然,NVIDIA找到了在PC GPU中使用平鋪式渲染的方法,而且克服了它的負面影響以及兼
容性問題,但具體細節必然是商業機密,就無從知曉了。
麥克斯韋架構的GTX 700/900系列顯卡能效提升巨大,平鋪式渲染顯然功不可沒。
原文出處:http://www.realworldtech.com/tile-based-rasterization-nvidia-gpus/
--
開放下面推文「快推!不然別人以為我看不懂」
--
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