Under some really strange conditions, parts of the layers start to flicker heavily. This flickering consists mostly of black pixels or short vertical lines or something like that. I already mentioned that in another thread.
They flicker heavily on the screen, which you of course can not see on a screenshot.
Here is an example: On this track, there are three layers. Look closely! There is one texture where there is no flicker. This is layer 3. It has a tick on “highest elevation”, the other two haven’t.
The same image in test mode:
Note how the blue part fits to the flicker-free part of the 1st image. And it does not flicker in test mode at all.
The weirdest thing about this bug are not the ares which flicker but the areas which do not flicker.
Here is another test. Again, there are three layers (1 to 3), only layer 3 has “Highest slopes” ticked.
Here you see a very steep mountain. Note the camera is facing north.
Now I turn off test mode and turn on flicker mode :
Look closely. Very closely. Note how only the areas which are steep are flicker-free. Additionally to that, only the East and West side are flicker-free, but the North and South sides of the mountain do flicker. I also played around with layer angles. They don’t seem to affect at all the flicker-free zone. It seems the minimum steepness required to be flicker-free is a fixed number.
Some conclusions
It seems, the flickering almost certainly appears (at least for me) if these conditions are met:
- Layers 1, 2 and 3 are active.
- The other layers are not active.
- Layer 3 has highest elevation ticked.
- All other active layers haven’t “Highest slopes” ticked.
- Graphics settings: Terrain detail is set to “High”.
- Graphics settings: Triplanar is set to “max 2”.
If the conditions are met, layers 1 and 2 will flicker, but parts of layer 3 won’t flicker. A section is flicker-free if it is on layer 3, on a steep hill and either on an East or a West side hill.
Can anyone reproduce this?
OS: GNU/Linux, Linux 3.12.9
Graphics card: NVIDIA GeForce GTX 460
Graphics driver: NVIDIA 331.38
Stunt Rally: as of commit 5fb442254b0c7e59db3cc38df3f9ac81c3fca234.