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maddoc

Lod_Radius 6,5 or 10,5 ?

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Does anyone note any differences in using the lod_radius at 6,5 or 10,5 changing it via the p3d.cfg file ??

 

Thanks

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I'm using 16.5.  I use LOD_RADIUS=16.500000 to define how far away from the aircrafts ground position ground textures are loaded to the clearest level.  I think each LOD is a tiles distance.  I don't see much impact on a GTX 780 with that setting, in fact I might try higher, but it gives a fairly realistic appearance.

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16.5 ???  :blink:

If you set such value in FSX or P3D 1.4 maybe you can wait for 20-30 minutes to load the scenery.

 

Is P3D 2.2 different in this? 

I have to try this value at least ine time...

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Ok, so did you try it?  What did it do?  Am I hallucinating?

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What I wish to know is if really increasing the lod radius we will get better resolution texture. It seems to be no significative difference between lod_radius6,5 or 10,5 just like 6,5 is the maximum allowed setting.

What 'a your experience about that ??

 

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Are texture mipmaps really controlled by LOD_RADIUS? I thought  it was MipBias that caused sharper textures to be used at a distance.

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I am almost certain I see a difference at 16.5.  Photoreal ground textures are drawn out farther.

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I am almost certain I see a difference at 16.5.  Photoreal ground textures are drawn out farther.

One call it the placebo effect.

Spirit

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Are texture mipmaps really controlled by LOD_RADIUS? I thought  it was MipBias that caused sharper textures to be used at a distance.

o.k. good to know! Can that "MipBias"-value be changed?

 

I find the loading of textures very anoying when I fly close to it... I would love to see that those sharper textures would "fade" in (like the AutoGen does) or "morph-in".

 

Also to see the mesh resolution beeing so low in the distance is spoiling some reality for me. Can that be changed?

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I am almost certain I see a difference at 16.5.  Photoreal ground textures are drawn out farther.

Can you take two screenshots one with 6.5 and another one with 16.5 please? :)

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Can you take two screenshots one with 6.5 and another one with 16.5 please? :)

 

This. I'd be interested to see the results, especially given that LM are supposed to have capped it at 6.5,

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But that might distort my reality.  Why would I do that?  I'm happy.

 

Maybe later this morning I can investigate my visions..

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In that case I'm setting mine at 17.5 and will then sit back and bask in my reflected glory :P

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I am almost certain I see a difference at 16.5.  Photoreal ground textures are drawn out farther.

 

Take comparison screenshots, that's probably placebo.

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By Locked Martin

 

 

We handle the lod radius a bit differently now so it doesn't map 1-to-1 because the radius varies for each level for more efficient use of memory. It also can't be overridden in the cfg to be higher than the max so values greater than 6.5 won't work. As noted above, there are also various other issues people have had with blurry textures. These can be related to AA setting, having settings too high, or having bad affinity masks. Beau Hollis
Rendering System Lead - Prepar3D® Team

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I can only say from FSX point of view, LOD_RADIUS should affect photoreal textures and mesh because they use LODs, but landclass texture tiles are mipmapped as far as I know, so they would be affected instead by MipBias. Supposedly increasing MipBias to something like 6 helps give sharper landclass tiles at a distance but also causes shimmer unless you adjust video driver settings:

http://iblueyonder.com/fsx-relief-for-the-blurries/

 

Dunno if this applies at all to P3D though.

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Supposedly increasing MipBias to something like 6

How does one increase MipBias?

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6.5 is as far as you need it. I personally use 4.5 and find it sufficient.

 

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How does one increase MipBias?

 

Add it to DISPLAY.Device section in your fsx.cfg or prepar3d.cfg (assuming P3D supports it):

 

[DISPLAY.Device.NVIDIA ...]

Mode=...

MipBias=6

 

 

Remember to set Negative LOD Bias in your video card to "Clamp"

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