Video drivers

Drivers must be able to start even with no physical monitor attached to the card.

Rendering tinkering

• Tweak DPI to make toolkits use bigger icons & fonts etc.
• Xrandr panning support
  • provides basic zoom
• Gamma tuning & color inversion
  • To tune colors
• Xrandr screen mirror
• TODO: gtk3 "perfect" magnification
  • widget is requested to render in a bigger pixmap