eevee/3dfloors-notes.md

## 3dfloors-notes.md

      
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              3dfloors-notes.md
            
          
3d floors

somewhat critical problem: ordering 3d floors by height means that the selection changes if you mousewheel the height above/below another floor

maybe i should get rid of the duplicated extra_floor_t struct and instead give each sector just a list of the control sectors, then identify by those instead of index?
could still stay sorted, even
it IS possible to have the same control sector mapped to two 3d floors, though.  but is that ever useful??
i really wish i had faux flat/wall objects

i REALLY WISH i could just pass around sector pointers and bail if they're bogus??


can't highlight or select an inner flat of a 3d floor
mousewheel to change a regular ceiling height is super slow in my dump3 map; i think the full mapspecials thing is too expensive

may need to do actual incremental updates in this branch, right now!  OH NO


there was some kind of problem i had...  but i don't remember it now...  something to do with modifying 3d floors in realtime...
currently most of the properties are drawn from the wrong place, e.g., floor/ceiling should use the control sector's offsets and rotations and whatnot

for the most part, the only property of the target sector that's actually used is its geometry


don't draw walls between adjacent chunks of the same 3d floor
why do i keep popping out of 3d mode??  (hasn't happened in a while)  (started happening again after i added lighting code)
need to sort translucent flats by distance, i think

make a stack of several floors in a test map and see what happens


with flats_use_vbo off, slopes aren't rendered.  oops!  seems straightforward, in renderFlat.
support palette blends
make sure transferring the sector color is correct?
handle light effects

flats: need to propagate downwards to next floor
walls: may require splitting quads, ouch (but would make partial wall light trivial)


draw walls on two-sided lines!

support upper/lower flag as well


fix selection to have a way to refer to a certain 3d floor section of a line or sector

currently selection is unstable, since you can change the order of the floors, oops!


sector info overlay still needs work

says "ceiling texture", "ceiling height", etc when looking at a floor; is that right?
flat lighting is wrong (i think mapspecials should intervene here)
doesn't know about "flat plane at ceiling height"
should probably show floor type?
haven't touched walls at all and not sure how that should even work


make all the keybindings do the right thing when highlighting a 3d floor

changing wall texture, offset, scaling
changing flat texture, panning, scaling
resetting
changing flat height, wall height

for flat height, should understand "flat plane at ceiling height"


changing linked lighting -- consider flags
changing unlinked lighting
auto-align (!!!)
floodfill selection


did i break the errory rendering of a missing flat?  can you have a missing flat
support vavoom floors??  can i even find an example of them?  their wiki has been broken for ages...
STILL some bizarre rendering errors

first time in 3d mode, inside of this floor doesn't render; second time, it does??  what?
ONCE ONLY, i still got fucked-up VBOs when switching back to 2D mode, sigh

i've seen this during normal usage too!


some sectors (/without/ 3d floors!) don't have textures
modifying sectors in 3d mode can corrupt the polygons in very strange ways, presumably vbos getting crossed
3D floors are now flickering between light levels, what on earth

is it trying to draw the inside AND outside flats, and they're fighting??  how does DRAWBOTH work?


when moving mouse from one 3D floor to another, highlight briefly flickers to the floor of the actual sector rather than the 3D floor
2D mode doesn't always correctly update VBOs when deleting a sector (or possibly while creating a new one, etc)


fix all remaining TODOs!