imput render.drawscreeninfo 1 on the console, now this command lets you see VRAM usage. If you are topping your VRAM usage (according to repi, Mantle is currently using more VRAM compared to DX11), it might explain that you are still getting that random stutter once in a while.
PS: Would be lovely if repi still lurks around this forum, to confirm what these (apparently) new in game commands actually do:
thread.processorcount (default is -1, so I guess driver handles it like the rest of the commands set in -1?)
thread.jobthreadpriority (default is again -1)
thread.minfreeprocessorcount (default is 0)
thread.maxprocessorcount (default is 5 for me)
With default settings drawscreeninfo tells me I currently have 4 Job threads (if I remember correctly, there were 2 main threads, the rest being job threads). Im on a 8320, so that would leave 2 unused threads. Would be lovely if we can get a clearer picture of what those commands do and if you can tune them further beyond defaults for even more performance
Sam what is going on with mantle support and gcn 1.0 cards? I hope you realize more people game on gcn 1.0 hardware then 1.1...
It has worked and worked well since the first mantle patch. Ignore what people who don't even own AMD cards and haven't played the game on MP at all are telling you.
My 290 suffers heavy stuttering as well. But not only on BF4 using mantle, on League of Legends, Black Flag, Tomb Raider and other DX games, stuttering is so heavy that i have to rollback to 13.12 again.
Does anyone suffers the same stuff?
unfortunately not true...It has worked and worked well since the first mantle patch. Ignore what people who don't even own AMD cards are telling you.
It might be helpful if you (and others reporting issues) posted their specs. It's not going to be the same for all setups. Also, if you have any other programs running in the background. There could be interactions going on and we might see a pattern.
Ok, so I had mixed results with AMD rig in sig.
All settings Ultra, 4x MSAA, no PostAA, 1920x1080 @ 144hz Asus VG248QE
Color is fixed and looks the same as DX11 for me and Crossfire stuttering is fixed as well. So big improvement there.
I was trying to figure out what kind of gains I was getting, so first I fired it up in DX11 and on any 64 player map the 7970's were tapping out at about 65% usage which would indicate CPU bottleneck. FPS were in the 70s 80s......
Then I fired up Mantle and can't get GPU usage numbers from that obviously, but FPS was 80's 90's with a couple blips over 100.
I was expecting 120+ with the CPU bottleneck being removed. Another weird thing was that when setting Resolution to 1080p@ 144hz in the video options the computer immediately reboots. It was fine setting it @ 120hz however.
Same settings and everything on my nvidia system in sig (accept the nvidia system accepts the 144hz setting no problem), and GPU usage is 95% + the whole time with FPS over 125 most of the time.
Now I realize the Nvidia system has a much better CPU then my AMD system, but shouldn't Mantle have been the equalizer there? Certainly my 7970's are as fast as my GTX 670's.......
Nvidia system is connected via Dual Link DVI and AMD system connected via DP certified Displayport cable
Thoughts anyone?
Thoughts anyone?
I'm thinking it has to do with the 4xMSAA. A lot of people who see improvements seem to not use AA for one reason or another, while you did.
unfortunately not true...
the behavior is really different regarding the tested setup...
E.g.
the problem on my system is mainly the presence of more than one card and then a mix of graphics settings... and lack of optimization for sure
Catalyst 14.2, GPU Pitcairn 2GB Vram, last BF4 update (Single Player), at 1080p, job threads remains 4 while someone says 7 with FX 8 series CPU (my own CPU, so why? is it correct? in SP it uses 4 threads and maybe 7 in MP ? who knows...i will try soon)
crossfire disabled and 2nd GPU enabled: Star Swarm doesn't run at all (mantle64.dll error).
BF4 oddly stutters every 2 seconds even if the buffer doesn't fill much, unplayable (it seems selecting the 2nd GPU with incorrect voltage instead of the first)
2nd gpu disabled by device manager: Star Swarm runs as usual.
BF4, here depends by the graphics settings, not comparable with D3D11 which manages the same settings in single or crossfire with no apparent issues...
that is, if with Mantle i enable MSAA and use ultra textures ...there is a vram leak (not in D3D)
if enable MSAA, then disable it... ingame is not possible 'cause the buffer remains higher than 2048MB, i have to restart the game
so, with one GPU only is playable IF textures high and MSAA OFF = D3D > Mantle
crossfire enabled: BF4, even here it depends by the graphics settings, can't enable MSAA and ultra textures
so definitely there is a problem about their tests (if they ever made ​​on these cards, Mantle antialiasing maybe bugged)... and Vram usage AND above all if you have multigpu on the system and the crossfire switch....
7000 don't enable crossfire? since when? some 7 cards have issues... crossfire or not doesn't matter... you can't use some graphics settings compared to D3D if you have less than 3GB Vram... you can't compare the same max settings. That is, ATM if you want more quality and stability you have to run D3D. Indeed neither single nor crossfire work good yet now...even the 290 sometimes has abnormal fps drops...What does 7000 series have to do with crossfire? We're talking about completely different things.
7000 don't enable crossfire? since when? some 7 cards have issues... crossfire or not doesn't matter... you can't use some graphics settings compared to D3D if you have less than 3GB Vram... you can't compare the same max settings. That is, ATM if you want more quality and stability you have to run D3D. Indeed neither single nor crossfire work good yet now...even the 290 sometimes has abnormal fps drops...
Is it enough clear to you? :biggrin: however, it's a beta...
ok, nevermind :biggrin:I have absolutely no idea what you are talking about...