GTX 260 OC vs DCS BS

[Breakpain]

Hi guys. have borrowed a graphic card from my friend - I want to buy it. It is nVidia GeForce GTX 260 OC, but I have a problem id DCS - I got elipsoid objects on my SHKVAl, when I zoom out in cocpit. When I start zoomin in - every step I get closer, the "circels" on SHKVAL are thinner, when my zoom is from 0 to 50%, there you can notice that. From 50 to 100% zoom, you don´t recognize it. It looks like this, when my zoom is on 0%, so I am fully zoom out in cocpit. (pict)

 

Can anyone help me with settings? I have new drivers 196.21

[Vecko]

You must change driver.Try some older...

[bfeld]

You don't seem to have Anti-Aliasing on, try to turn it on. Should be better then, what you experience is Aliasing.

 

These patterns are caused by the the horizontal line texture on the Shkval, that simulates kind of interlacing I guess. When zoomed out and not filtered, the many details of the structure cause artificial patterns like your ellipses. Filtering (like Anti-Aliasing) prevents this. You could probably also reduce this effect by using a lower resolution for cockpit textures (Shkval and ABRIS).

Edited March 10, 2010 by bfeld

[Breakpain]

You don't seem to have Anti-Aliasing on, try to turn it on. Should be better then, what you experience is Aliasing.

 

These patterns are caused by the the horizontal line texture on the Shkval, that simulates kind of interlacing I guess. When zoomed out and not filtered, the many details of the structure cause artificial patterns like your ellipses. Filtering (like Anti-Aliasing) prevents this. You could probably also reduce this effect by using a lower resolution for cockpit textures (Shkval and ABRIS).

 

Hm, A-A is on :-( .. that´s the problem ... I am still trying, also tried older drivers ... still have this issue. Resolution iin cockpit - doesn´t make any change ...

 

nVidia settings are:

 

Ambient Occlusion - ON

Anisotropic filtering - 8x

Antialiasing - Gamma correction - ON

Antialiasing - Mode - OVERRIDE ANY APPLICATION SETTINGS

Antialiasing - Setting - 8x

Antialiasing - Transparency - MULTISAMPLING

Maximum pre-rendered frames - 8

Multi-display/mixed GPU acceleration - SINGLE DISPLAY PERFORMANCE MODE

Power management mode - PREFER MAXIMUM PERFORMANCE

Texture filtering - Anisotropic sample option - ON

Texture filtering - Negative LOD bias - CLAMP

Texture filtering - Quality - QUALITY

Texture filtering - Trilinear optimization - ON

Threaded optimization - Auto

Triple buffering - ON

Vertical sync - FORCE ON

[DarkWanderer]

Hm, A-A is on :-( .. that´s the problem ... I am still trying, also tried older drivers ... still have this issue. Resolution iin cockpit - doesn´t make any change ...

 

nVidia settings are:

 

Ambient Occlusion - ON

Anisotropic filtering - 8x

Antialiasing - Gamma correction - ON

Antialiasing - Mode - OVERRIDE ANY APPLICATION SETTINGS

Antialiasing - Setting - 8x

Antialiasing - Transparency - MULTISAMPLING

Maximum pre-rendered frames - 8

Multi-display/mixed GPU acceleration - SINGLE DISPLAY PERFORMANCE MODE

Power management mode - PREFER MAXIMUM PERFORMANCE

Texture filtering - Anisotropic sample option - ON

Texture filtering - Negative LOD bias - CLAMP

Texture filtering - Quality - QUALITY

Texture filtering - Trilinear optimization - ON

Threaded optimization - Auto

Triple buffering - ON

Vertical sync - FORCE ON

Try disabling all the options and then enabling them one by one, ideally - by incrementing the value (none/2x/4x/...). It is either AA, as average_pilot pointed out, that is causing the effect, or TF.

[Boulund]

Not really being able to add anything to help you, but wouldn't this more properly be named Moiré patterns? Imo "aliasing" would be the jagged (horrible looking) lines at the edges of the shkval monitor.

Judging from the picture you supplied you either have massive issues with anisotropic filtering on your graphics card or the picture compression is messing things up..

[Breakpain]

That's a good example of real aliasing. You can see the same effect on TV when someone is wearing clothes with thin lines. People working on TV avoid it.

 

That should be happening to everyone...:huh:

YES you are right - I consulted this with my DCS comunity and it was explained to me, that this is normal and everyone has this "issue" ... This should be seen on SKHVAL in DCS, or in real, when you are too far from the screen. With ATI, I didn´t see it, so I thougth, it is wrong now. But now I know, it was wrong with ATI, I should see it. The other thing is, that with ATI I could hardly read the words under switches, know I experienced pure words - sharp and clear:lol:.

 

So my mistake, there is no problem, but I have to get use to it, it is a little bit strange to me ;-).

[bfeld]

Not really being able to add anything to help you, but wouldn't this more properly be named Moiré patterns? Imo "aliasing" would be the jagged (horrible looking) lines at the edges of the shkval monitor.

Judging from the picture you supplied you either have massive issues with anisotropic filtering on your graphics card or the picture compression is messing things up..

 

Hey Boulund,

 

yes and no :). Moiré patterns are caused by aliasing. Aliasing is not only those jagged lines.

 

If you have a digital (discrete) signal, like an image, it is just sampling of the real (continuous) image. The jagged lines, you mentioned, are just sampling points of a real line, that is defined by the continuous world or a mathematical formula, if synthetically rendered.

 

Image signals consist of different frequencies as audio signals do.

 

If your sample rate is too low (Shannons therorem: you must have at least a sampling frequency, that is twice as high as the highest signal frequency you want to catch), you will get false frequencies. Depending on the input signal, they might manifest as jagged lines or Moiré patterns.

 

One kind of anti-alising uses supersampling -- a higher resolution. That means, the sample rate/frequency is higher, which reduces aliasing. Another method is to low pass filter the input signal, that would be bi-/trilinear and anisotropic filtering for example. The low pass filter cuts the higher frequencies of your signal, hence, your sample rate (image resolution) can be lower, without having too much aliasing.

 

Since perfect edges (rectangular signals) are a combination of all frequencies (ranging to infinity), you will never be able to sample them without errors, you would need an infinite resolution.

Edited March 11, 2010 by bfeld