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[pcper] Frame Rating: Battlefield 4 Mantle CrossFire Early Performance with FCAT

post #1 of 41
Thread Starter 
Quote:
BF4 Integrates FCAT Overlay Support

Back in September AMD publicly announced Mantle, a new lower level API meant to offer more performance for gamers and more control for developers fed up with the restrictions of DirectX. Without diving too much into the politics of the release, the fact that Battlefield 4 developer DICE was integrating Mantle into the Frostbite engine for Battlefield was a huge proof point for the technology. Even though the release was a bit later than AMD had promised us, coming at the end of January 2014, one of the biggest PC games on the market today had integrated a proprietary AMD API.

When I did my first performance preview of BF4 with Mantle on February 1st, the results were mixed but we had other issues to deal with. First and foremost, our primary graphics testing methodology, called Frame Rating, wasn't able to be integrated due to the change of API. Instead we were forced to use an in-game frame rate counter built by DICE which worked fine, but didn't give us the fine grain data we really wanted to put the platform to the test. It worked, but we wanted more. Today we are happy to announce we have full support for our Frame Rating and FCAT testing with BF4 running under Mantle.

http://www.pcper.com/reviews/Graphics-Cards/Frame-Rating-Battlefield-4-Mantle-CrossFire-Early-Performance-FCAT



This info as come to light that there is more than 1 frame pacing method built into BF4.
Quote:
Originally Posted by humbug;26104277 
From the Lt.

LT has been hard at work. in his conversation with Johan yesterday on twitter he told me that there is two different frame pacing methods. Tell people to type RenderDevice.FramePacingMethod 1 into the console. It works wonderfully and gives the same fps as with it disabled. Method 2 (default since the patch) is what hits fps hard but gives the most consistent and tight (ridiculously so) frame times, hence the lower fps. Check my attached screenshots and post them to the thread. Look at the fps gain while using Method 1 vs Method 2. Incidentally frame pacing is so tight and consistent i cannot tell a difference between both on or off regardless of method used.


Frame Pacing Method 1

framepacingmethod1_zpsae1cf66c.jpg


Frame Pacing Method 2

framepacingmethod2_zpsa17f0853.jpg

http://forums.overclockers.co.uk/showpost.php?p=26104277&postcount=14
post #2 of 41
I'm kinda lost... is this frame pacing something I can enable, or some kind of testing tool???

If the former, what are the advantages? Is it Mantle only?
post #3 of 41
Thread Starter 
There is Frame pacing available in CCC for games in general as long as there is a profile which you can turn on or off per game bases or globally.

There is now frame pacing built into BF4 itself and it seems that this method is reliant on Mantle, maybe..
post #4 of 41
Those straight lines in the frame timing graph? Never seen that before? Bug? (i rarely every played BF4 so not saying it has to be a bug because of my own experience)
post #5 of 41
Crossfire mantle is very smooth in BF4, first thing to stick out compared to DX11 mode.
post #6 of 41



That Crossfire + Mantel frametime doesn't seem possible.... It's so flat.
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post #7 of 41
Those straight line smile.gif
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post #8 of 41
Thread Starter 
Quote:
Originally Posted by FallenFaux View Post




That Crossfire + Mantel frametime doesn't seem possible.... It's so flat.

Frame pacing benefits multi GPU the most and yeah hard to believe that it could be that good.
Edited by Final8ty - 4/3/14 at 7:25am
post #9 of 41
Quote:
Originally Posted by FallenFaux View Post




That Crossfire + Mantel frametime doesn't seem possible.... It's so flat.

WoW !
Such smooth
so sexy
impossibru
mantle god
post #10 of 41
so they lower the performance to decrease the frametime..
and they still need to improve on systems with low-end cpus
Edited by jmcosta - 4/3/14 at 10:00am
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