> This happens here as well (nVidia 8600GT (256MB VRAM) on linux). Now
> that I
> think of it it looks and behaves like graphics card memory bandwidth
> issue,
> maybe it is cured with the image cache set with CACHE_ALL? as by adding
> some
> more sistem RAM things haven't improved here.

Hm, I'm running an nVidia GeForce 8600M GT from linux - unless the mobile
version makes all the difference, that would argue against a graphics card
issue (or maybe I'm missing something, I'm not a hardware specialist
either...).


> At one point I thought it was because of your code, as I remember
> something
> about a custom "culling" thing in there (maybe I remember wrong, or
> understood something wrong).

The code has an option 'asymmetric buffering' which does remove clouds
from the scenery to improve performance. However, there are several
reasons to think that this has nothing to do with what is observed:

1) 'asymmetric buffering' removes clouds in the backward hemisphere of the
airplane, not of the view axis, i.e. you can turn the view to look into
the rear of the plane and see the gap in the clouds. If the effect depends
on the view axis, it must be something else.

2) 'asymmetric buffering' is off by default, it doesn't (ot at least it
shouldn't) do anything unless you activate it

3) the effect of clouds (dis-)appearing when the view changes persists if
all running Nasal code of Local Weather is terminated

4) the effect is somehow system dependent - I have never ever seen it,
others never got rid of it.

So unless there is a fairly developed conspiracy of bugs which somehow
mixes plane orientation and view axis, improperly reads out options and
keeps loops running despite a termination signal, it can't be related.

* Thorsten


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