[cairo] CAIRO_BO_GUARD_BITS and coordinate space?

[Vladimir Vukicevic]

Vladimir Vukicevic wrote:
> What's going on here?  We were able to use coordinates up to 32766 
> before the new tessellator, now we're down to 8192?

Sorry, we're down to 4096 -- because the fixed-point numbers are signed, 
  if 8192 is used, 0x20000000 << 2 = 0x80000000, which is -32768.0.  I'm 
guessing this should just be a 64-bit type.

    - Vlad