answered FTX PNW - Blue blotches sometimes near water

[JimmiG]

It seems in PNW (possibly other regions, haven't checked yet), I get these blue blotches or spots on the terrain. It only seems to happen with certain terrain textures (in particular, forest textures). I also get the feeling that it happens whenever there's water nearby, like a lake or river.

 

One pretty obvious example is at 21W. Note that I have turned off autogen, shadows etc. to make it more apparent:

 

 

When moving closer, it becomes less obvious:

 

And also when moving farther away:

 

Another example (forested mountainside just above the lake):

 

Again it vanishes when you get closer:

 

I've tried:

Verifying the files
-Running the migration troubleshooter (no errors reported), migrating the files again from FTX Central
Re-installing PNW
-Verifying files of PNW and the OrbX Libs
-Disabling any other addon scenery
-Disabling HDR, shadows, water reflections, FSAA etc
-Increasing and decreasing the LOD radius, tessellation and other World-related settings

[JimmiG]

Another example, see top left for coordinates

 

 

 

 

 

[Holger Sandmann]

Hi Jimmi,

 

the textures in question represent subalpine forests and have small patches of residual snow in them, something that isn't uncommon even in summer. If you use the top-down view the context becomes more obvious.

 

Cheers, Holger

[mopperle]

Holger are you sure that he is talking about the remainings of snow? He is talking about blu coloured patches which nearly disappear when getting closere:

 

[JimmiG]

It definitely has nothing to do with snow. Rather, it seems to be the water effect poking through in certain dark areas of this particular forest texture:

[JimmiG]

I might try a re-install if that would help. But first I was wondering whether anyone is running P3D 4.5 with somewhat similar specs to mine and could check out out 21W?

[Nick Cooper]

Hello,

I am sure that there is nothing wrong with your installation.

I am seeing the same there.

I know that @Holger Sandmann did explain to another customer why this happens but

I regret that at the moment, I cannot find the topic.

[Holger Sandmann]

Hi again,

 

sorry, I misunderstood. Indeed, there's a bug in P3D that interprets near-black pixels as water in textures in the same grid cell as a river or lake and at a specific distance range from the user aircraft. We flagged it with L-M but it hasn't been resolved yet. Sorry, I'm not aware of any work-around or specific display setting that would make a difference.

 

Cheers, Holger

[JimmiG]

On 7/5/2019 at 4:32 PM, Holger Sandmann said:

Hi again,

 

sorry, I misunderstood. Indeed, there's a bug in P3D that interprets near-black pixels as water in textures in the same grid cell as a river or lake and at a specific distance range from the user aircraft. We flagged it with L-M but it hasn't been resolved yet. Sorry, I'm not aware of any work-around or specific display setting that would make a difference.

 

Cheers, Holger

 

Thanks! Then I know there's nothing wrong with my installation so I don't have to waste hours reinstalling everything
It's not a huge deal, and when you have autogen enabled you barely see it. However it would indeed be good if LM fixed this bug.

 

I guess editing the textures so that black pixels are actually very dark instead of pure black would solve it, but it sounds like the problem is purely on LM's side.