[Blood] Low frame rate when map is open

[oifj34f34f]

Compared to Rednukem, Blood has a low frame rate when the map is open. I'm not sure if this bug exists in Windows (I use Linux), so please check it.

Rednukem (good)

duke.mp4

Blood (bad)

blood.mp4

[tmyqlfpir]

This is by design, Blood does not interpolate the view/angle for 2D map view. It can be fixed by interpolating much like the 3D view does.

[oifj34f34f]

This is by design, Blood does not interpolate the view/angle for 2D map view. It can be fixed by interpolating much like the 3D view does.

Thank you, nice work!

[Hendricks266]

This is by design, Blood does not interpolate the view/angle for 2D map view. It can be fixed by interpolating much like the 3D view does.

I would be interested in upstreaming that, expanding the extent of interpolation is definitely in scope. I believe we've already done stuff like that in VoidSW.

[tmyqlfpir]

See #735

While this issue is open, it's common to see renderDrawMapView() glitch out and render maps like this (E6M1).