Bug #522
flat changing sky issue
100%
Description
If you try to change a sky flat with XG, it renders the new flat partially suspended above where it should be.
In short, as if the ceiling is x unit's higher than it really is. The void is visible from where the flat should be rendered up to where the flat is incorrectly being rendered.
Labels: Graphics
History
#1
Updated by danij over 16 years ago
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This is due to the way the sky fix has been implemented (it is only checked once on map load). It is unusual to want to change an outdoor area to an indoor one but there is no reason the engine should prevent it (other than the minor bookkeeping issues it presents).
Just don't do it too often ;)
The sky fix logic should be changed so that it re-runs whenever a plane height/material change occurs (and improved so that a pass over the entire map is not required).
#2
Updated by vermil over 16 years ago
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Interestingly, this bug doesn't seem to occur if the sky has a 2nd layer. It only seems to occur on single layer skies.
#3
Updated by danij almost 16 years ago
I have reworked the sky fix logic to fix in order to support a DOOM.exe rendering trick that to date, Doomsday has not supported:
Middle textures on twosided linedefs in sectors whose floor/ceiling is a sky surface are not clipped to the height of the respective floor/ceiling plane.
In the process of which I have fixed this issue also.
I'm still tidying up my changes but they will be ready to commit to svn later on today.