聽說nv的尚方寶劍"ultra shadow"還沒出鞘說...
 

據說doom3中還尚未啟用6800 5900 5700系列的ultra shadow功能
我冽....等到nv新驅動開啟之後，不就如虎添翼了嗎??
超期待的說.....希望我的5900xt跑起來能比9800xt更快 :)

期待吧
哪裡聽來的啊.....

Firing Squad "3D Performance with DOOM 3: Part 1 High-End Cards"
http://www.firingsquad.com/hardware...perf/page11.asp

Quote
"The most startling part about it is that NVIDIA’s ace in the hole, UltraShadow, isn’t even enabled currently in DOOM 3. With the extensive use of stencil shadows throughout DOOM 3’s dark levels, UltraShadow could play a huge role in improving NVIDIA’s current performance even more."

Beyond3D在DOOM3出版後有訪問John Carmark。
http://www.beyond3d.com/interviews/carmack04/

其中有提到UltraShadowII部份:

Q: What's the situation with regards to depth bounds test implementation in the game? Doesn't appear to have any effect on a NV35 or NV40 using the cvar.

A: Nvidia claims some improvement, but it might require unreleased drivers. It's not a big deal one way or another.

其中﹐UltraShadowII的實際技巧為depth bounds test﹐也就是說﹐超過某距離的shader不去做計算﹐節省GPU畫圖的時間。John說﹐NV聲稱UltraShadow有一些加速功能﹐不過需要開發中 driver。間接的也默認ID software有在測試beta driver。他最後對此功能結論是無關痛癢。

UltraShadowII只是NV的一個行銷名詞/手段罷了。

如果有空回去翻翻ati/nvidia以往的新產品發佈的spec的話，
你會發現有很多“尚方寶劍”“根本沒有出鞘”過… :stupefy:

Yeah，knift大說的是，我看ATi 這次的"3Dc 曲面法線貼圖（Normal Map）壓縮技術"，也有可能成為這種沒機會出鞘的尚方寶劍喔。 :flash: