IL-2 and OpenGL

[HanneG]

4.04 was released, what, five years ago? ATi cards at the time didn't support some SM3 features (VTF, if I remember correctly). All recent cards, 3xxx+ do. You can't be serious about performance, anything that is not totally ghetto smokes Il-2, whether it's NV, AMD, Intel.

[Flanker35M]

S!

Easy enough to check for the optimizations and what is enabled when you use either NV or AMD card: shift + tab to bring up the console when a track starts ora mission. When NV card is selected and properly detected(have tested this) you get more shader nad NV optimizations for use. With AMD card the list is shorter and it loads a generic 3D algorithm.

These days AMD can do all the same tricks in OGL than NV can. And there is not much AMD can do if the code is specifically tailored to suit NV. Or should they create a profile in drivers that cheats IL-2 to believe all cards are NV? I do not think they would do that.

I have ran nVidia and AMD with IL-2, there is a clear difference between them. For example now even IL-2 runs at solid 60fps with VSync on I get some stutters and slowdowns in certain conditions where NV did not have them. All because of a piece of code done for NV.

There has been discussions about this that if it would be possible to do anything. Sure yes, but not for free as TD or other enthusiasts do. So the ball is at TD now IF they at some time could even check this. IF not then must live with it

[Xallo]

I still can't run effects=2 on my rig! It's worse fps than DCS:a10c at low level, when blasting all guns on a 110!

[Flanker35M]

S!

Even Oleg has said the Effects=2 is buggy and NOT recommended. True FPS killer on any rig out there. So stick to Effects=0 or 1.

[KG26_Alpha]

Originally Posted by Flanker35M

S!


These days AMD can do all the same tricks in OGL than NV can. And there is not much AMD can do if the code is specifically tailored to suit NV. Or should they create a profile in drivers that cheats IL-2 to believe all cards are NV? I do not think they would do that.

You do know this:

The OGL config is the only optimization area, this is where IL2 applies the settings.

Perhaps you could start there as IL2 wont recognize what GPU you are using unless you tell it, in the OGL, if the ATI drivers are optimized as Nvidia are then they will run the same settings if not then ATI have to make the drivers to run the same as Nvidia.

I cant for the life of me see what it has to do with TD

Its a ATI thing surely ?

[Flanker35M]

S!

It is. The thing goes back to original IL-2 and had email exchange with Oleg and programmer of IL2 about it. IL2 is NV optimized due various reasons. Period. On the other hand it could be hard to press AMD to make any specific changes to their drivers for a game over 10 years old when there is a ton of "boom headshot" games that draw most attention

I can set my card as NV in IL2 setup but if looking at the console you see that the game reverts to a generic 3D algorithm no matter what. Same applies to water, set it to 3 or 4 and you end up with 1.

Also the slight issues with AMD seems to be the water mainly. I benched this a lot lately and it seems that the water itself is a piece of cake for AMD but when Perfect is enabled the sky reflection moving on the water surface causes slight stutter at certain angles and loss of FPS combined with water splashes. This was not the case with NV card I used.

Anyways if TD could check this then it would be nice. If too much of a work then no can do. Yet for one game I do not change my GPU, other games run perfectly with AMD cards

[KG26_Alpha]

For fun

I used to do a bit of work with PE Explorer before my brain exploded a few years ago.



Open up the graphics.dll in IL2 and have a look in there.

You will see the various calls on the shaders and 3d management.

Its no easy thing you are asking for TD probably impossible without the original coder who made the .dll

Unless they can put an extra line in the conf.ini OGL section for ATI to use NV shaders say like

TexATI.Nv=1

then use the dll to link over.

Pure fantasy though

[Flanker35M]

S!

Is this PE Explorer a free software? IF so, then worth taking a look Was there any structure in the dll that could tell anything how it works for various cards? The IL-2 programmer did help with AMD driver issue(blue hue and blocky text) by giving information what to look for in drivers. IF he could be contacted again he possibly could help? That would be great

It is easy to test the stutter issue for example with AMD over water. I set it to 2 and fly over water at around 100-500m. Take external view and look straight down above your plane and you see a slight stutter even FPS is a solid 60fps with VSync. Now move the camera to a lesser angle, say 80-45deg and the stutter is gone. Strange ain't it? Above ground this does not happen.

[KG26_Alpha]

It will show the structure of the file and some other things too

Well I did look at it briefly to see what was causing the "Nvidia Ring" after asking for a fix since the 8800 series cards but was told the programmers no longer available.

[Flanker35M]

S!

NV got the ring on water yet AMD does not have it at all. Kind of odd. This was the first thing I noticed with the 6970HD compared to my previous card 580GTX. Really, both NV and AMD offer damned good performance in any game you throw at them. IL-2 is the only one I've seen a difference with AMD.

Hmm..gotta ask around a bit