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[HRJ <1093565@xxxxxxxxxxxxxxxxxx>]

The problem seems to be that in compiz 0.9, a lot of code related to
OpenGL has changed.

More details here: http://wiki.compiz.org/Development/zero-
nine/GLESPorting

THe part releveant to the color filter plugin is:

"ARB Assembly Program Usage

As  GL_ARB_fragment_program  is not part of the OpenGL core profile or
OpenGL|ES, it was removed in favor of GLSL shaders. Unfortunately, that
means that any plugin that uses  GLFragment  to generate GPU assembly
shaders needs to have that part rewritten. That warrants another article
as it is a much larger subject."

So, someone needs to write a color-filter plugin that doesn't use ARB
syntax. It needs to take GLSL shaders as input.

For my part, I will try to write a simple plugin that only filters color
channels based on a percentage value. For example: if the percentages
are (100, 40, 40), then the resultant color would be (r, g*0.4, b*0.4)

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https://bugs.launchpad.net/bugs/1093565

Title:
  Missing compiz color filter plugin since quantal

Status in “compiz-plugins-main” package in Ubuntu:
  Triaged

Bug description:
  Up until Precise, the compiz-plugins-main contained many plugins:
  http://packages.ubuntu.com/oneiric-updates/i386/compiz-plugins-main/filelist

  The one I am particularly interested in is the color-filter plugin.

  Since Quantal however, the plugin is not present:
  http://packages.ubuntu.com/quantal-updates/i386/compiz-plugins-main/filelist

  This is an important plugin for the following reasons:
  1. Some people  have a medical condtion that makes them sensitive to certain colors.
  2. For anyone who needs to work at night, or work in a low light condition, it is often useful to filter green and blue light.

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