* Using the Doom-style dome here because it looks better.
* this necessitated changes to the backend to allow both types of sky domes at the same time
* do not clamp panning fields for cloudy sky with the new renderer because this makes the texture jump.
* Build skies need a different mesh for the dome - the one from GZDoom distorts them too much.
* made adjustment to the positioning math after redoing the mesh
* Exhumed abuses some strange effect of the original sky placement math which means the y-offsetting must be disabled for this game.
* RRRA sky initialization fixed. It must be done after setting up the tiles.
* the palette shader was not bound.
* the palette textures were not bound.
* palette mode still used regular lighting on top of the palette emulation
This works a lot better than before but is still not complete.
An empty buffer is a perfectly valid construct that may not be asserted upon. The 3D scene does not use indices so the buffer receives no data and remains empty.
This made the softpoly renderer fail in debug builds. Performance issues aside it works fine now.
Fixes#314
Most of what got added is still unused.
# Conflicts:
# source/build/src/palette.cpp
# Conflicts:
# source/build/src/palette.cpp
# Conflicts:
# source/common/engine/i_interface.h
All games combined there's 11(!!!) scene render blocks, not counting the sub-blocks for ROR and mirrors.
Does it surprise anyone that most of these sub-blocks do not feature all engine capabilities?
