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[Baybal Ni <145604@xxxxxxxxxxxxxxxxxx>]

Created attachment 40431
Allow changing of hintstyles by FC

http://weirdfellow.wordpress.com/2010/08/01/patching-cairo/

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https://bugs.launchpad.net/bugs/145604

Title:
  VRGB sub-pixel hinting causes black-on-black text rendering

Status in libcairo  -  cairo vector graphics library:
  Confirmed
Status in cairo package in Ubuntu:
  Triaged
Status in compiz package in Ubuntu:
  Invalid
Status in compiz-fusion-plugins-main package in Ubuntu:
  Invalid

Bug description:
  Binary package hint: libcairo2

  There is a long-standing problem (Gutsy, Hardy, Intrepid - possibly
  Jaunty too) with sub-pixel rendering which affects metacity or compiz
  composition (see the images attached to this bug) when VRGB is chosen
  as the sub-pixel format. Comment #15 by MoMaT demonstrates a non-
  compiz scenario. My comments #2 and #10 demonstrate the issue with
  Compiz enabled.

  The underlying issue essentially seems to be: where should sub-pixel
  rendering should be done - in libcairo or in the font renderer
  (FreeType in this case) ?

  There have been two versions of the Ubuntu patch in
  libcairo/libcairo2. Reports seem to suggest that both versions may be
  responsible for the VRGB problem (however, that supposition needs
  checking - see Bob McElrath's comment #19).

  We need to be aware that libcairo (libcairo 1.5.4 in Universe) and
  libcairo2 (cairo 1.6.0 in Main) are similarly patched and will need
  similar fixes.

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