Spot on Rob

Here is a good video of the differences in DX10 and DX11

 

A fairly good comparison but thing the FPS probably lag as they do not have the best drivers for DX11 out yet.  The biggest difference I saw was the more pronounced rock path for DX11 as the rocks looked larger and the DX10 looked kind of flat in places.  Thanks Rob for show the difference(s).  I do not expect DX11 in FSX unless Lockheed Martin can somehow get the permission to do some recoding.  I am very, very happy with my DX10.

 

 

Hi Jim! It's still at 16 'coz I can only concentrate on one thing at a time! (gettin' old).

 

Hi Paul,

I can't believe you can't multi-task!  Just because you authored the AVSIM Software and Hardware guide, the How-To guide for us here in the DX10 Forum, reading and responding to several questions about DX10 and hardware, etc., etc., shouldn't make you lose your concentration. LOL!  I saw that AF setting in some other guides too and around the Internet and it gets confusing seeing all those variations in just one measly setting!  :lol:  Hope you are relaxing and enjoying the weekend. 

 

Best regards,

Jim

Edited April 1, 201313 yr by firehawk44
Bad grammar, sentence structure, etc., in my responses.

That dx10/dx11 movie is nothing more that the "Heaven" graphics card benchmark application. The ONLY reason that DX11 seems laggy in this is that the Heaven benchmark is known for its heavy use of DX11 tessellation, which is something that DX10 flat out does not support. Tessellation is an algorythmic approach for creating polygon meshes; it allows for modeling with much finer detail of 3d shapes with less overhead than if rendered with the same detail using traditional polygon meshes. To compare fps performance of DX10 vs DX11 using that Heaven movie is truely comparing apples to oranges.

Thank you all for a very interesting discussion.

I have now applied these settings

 

to the default Global profile and saved it as MS FSX, linking fsx.exe to it.

 

I have also restored my fsx.cfg file to default

and added only

 

[GRAPHICS]

TEXTURE_MAX_LOAD=2048

HIGHMEMFIX=1

 

[TERRAIN]

LOD_RADIUS=8.500000

 

The frame rate is limited to 30 fps in both NI and FSX.

 

The result is this

 

 

 

 

 

which is fine for me.

 

Regards,

Nick

Thanks for sharing these Nick. Those are very similar to mine. My only comment is that, as others have mentioned, you may experience frame rate loss when flying through heavy cloud at 8x SGSS due to your GPU bogging down. I have a GTX 660, which has just a bit less horsepower than yours, and I max out with these settings in clouds even with my clouds resolution rolled back to 1024X1024. But I notice you're also running at a lower screen resolution than me, so you may not be hitting this.

 

I'm still trying to decide if the modest image improvement at 8X SGSS which I can appreciate all the time versus the more reliable FPS at 4x SGSS I'd get if it happens to be cloudy and I'm in the thick of it, is worth the trade-off. (I think I should just turn off the FPS counter and fly through the clouds and see if I actually notice the drop in FPS.)

 

Cheers, Brian

I remember when the discussion of performance dropping in clouds due to AA first came up and Steve said he knew why and would look at a fix but that was months ago. Anyone seen Steve lately? Nothing has been posted to his FSX blog recently either.

Oh OK... But I just tried 5.5 but it doesn't even load. IT goes into FSX Not responding.

 

Hmm..

Make sure you entered it properly in the FSX.cfg:

 

LOD_Radius=5.5  (make sure that's a period between the 5's and not a comma).

 

When you raise this setting (mine is at 8.5 right now), it will take much longer for FSX to load textures.

 

Best regards,

Jim

I think Steve has gone skiing

 

Great screenshots Nick, love the AC too!

 

 

To compare fps performance of DX10 vs DX11 using that Heaven movie is truely comparing apples to oranges.

 

Disagree, the purpose was to demonstrate the visual benefits that DX11 brings over DX10 ... tessellation ... that's why the DX11 video looks better, but at a cost of frame rates.  I guess I don't understand your point, if one isn't going to make use of Tessallation then there isn't much of a point to move to DX11 ... DX10 does not support "hardware accelerated" Tessellation, DX11 does.  If you remove Tessellation from the process, DX11 and DX10 would look identical and perform (frame rates) almost identically (within a margin of 1 fps).  Are you trying to suggest DX11 (without Tessallation) is faster than DX10?  If so, how are you coming to that conclusion?

 

I'm actually coding that exact process comparison right now ... also using NVidia's PerfHUD and their Nsight Visual Studio Edition 3.0 along with SlimDX (great DX wrapper).  I guess I'm not seeing what your seeing?

Are you trying to suggest DX11 (without Tessallation) is faster than DX10? If so, how are you coming to that conclusion?

You are extrapolating what you quoted from my post.  The quote's meaning is only what is says:  Apples: heavy use of tessellation, Oranges: no use of tessellation.  This is a very biased comparison if FPS performance is the objective; it's just like comparing using heavy AA/AF to no AA/AF at all.  In the end it's nothing but the endless battle of image quality vs. FPS.  BTW, have you ever run Heaven 3.0? (4.0 is a step backwards)  Lots of settings to test, give it a try: http://downloads.guru3d.com/Unigine-Heaven-DX11-Benchmark-3.0-download-2873.html

 

BTW, have you ever run Heaven 3.0? (4.0 is a step backwards) 

 

Heaven 4.0 does not allow selection of DX10, only DX11, DX9c, OpenGL.

 

But here ya go, DX10 and DX11 using Heaven 3.0 with NO tessellation set on either.  Recorded with Fraps but Heaven 3.0 reports frame rates in the upper right corner (kinda hard to see but it's there).  As you can see, no difference in performance from DX10 to DX11 ... maybe DX11 is 1 fps slower but I'd chalk that up to within error tolerance of Heaven 3.0 benchmark tool.

 

Anyway, I just hope those P3D folks understand that DX11 isn't going to make FSX run any "faster" over current DX10 implementation ... at least not a straight-up conversion.  If the P3D folks take apart a lot of FSX code to support multi-GPU processing, then that's a different story ... but than could be done in DX10 or DX11.  I'm really just trying to clarify some mis-conceptions around DX11 and what it'll do.

 

Make sure you watch full screen mode with quality set to "Original" ... 2560 x 1600.  No Tess, 8X AA.

 

DX10

 

DX11

 

Rob