more color screen stuff; made advanced screen 4 bit, pro screen 8 bit (which is actually pretty much for a pseudo computer in a game with 16x16 textures...); depth can be dynamically changed; colors are always provided as 32bit rgb from the lua side to make things easier, so it's ok to call these even on a color-less gpu+screen; added vertical gap between chars in char texture to avoid bleeding when interpolating due to downscaling; made some programs use colors (sh, lua and ls); screw scanlines, aliasing is too much of a pain
20 files changed
