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Tiny Graphics Interface

oliverschmidt edited this page Apr 4, 2013 · 4 revisions

Driver classification

driver double page best colors best resolution
a2.hi.tgi  
a2.lo.tgi    
a2e.hi.tgi  
a2e.lo.tgi    
atari3.tgi      
atari4.tgi      
atari5.tgi      
atari6.tgi      
atari7.tgi      
atari8.tgi    
atr8p2.tgi  
atari9.tgi    
atr9p2.tgi  
atari10.tgi      
atr10p2.tgi    
atari11.tgi    
atari14.tgi      
atari15.tgi      
atr15p2.tgi    
atmos-240-200-2.tgi  
c128-vdc.tgi    
c128-vdc2.tgi  
c64-hi.tgi  
geos-tgi.tgi  
lynx-160-102-16.tgi

TGI bitmap fonts

  • Starting coordinates are: Lower left corner (not baseline).
  • Drawing is done transparently (meaning non-glyph "background" pixels are left as they are).
  • A driver states via a bit in the header if it supports 8.8 fixed point scaling (or only integer scaling).
  • Based on that bit (and the already existing integer x and y size values) the TGI kernel does clipping on character granularity.
  • The parameters to the OUTTEXT driver entry point are no C string but kind of a Pascal string in order to facilitate copy-free clipping for TGI kernel.