RGB filters for different forms of color blindness

Question

My father is color blind and given that I work in games where the visuals are important, I\'ve always wanted to write a filter for screen shots (or even some type of shader) tha

Answer 1

My Google search came up with this one, which appears to be exactly what you're looking for. Eight different versions of color blindness are simulated by multiplying each of the R,G,B values by 3 different percentages and adding them together.

http://www.colorjack.com/labs/colormatrix/ (dead link)

Working Archived Link (working link)