IL-2 and OpenGL

[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

[Flanker35M]

S!

After rigorous testing the biggest hit on FPS is when using LandShading=3. If using 2 then FPS is same as when using NV card, within only a few FPS. So maybe TD could look into this item?