a88144f9e1
These same magic constants were used in all cases, so move them into a common place. While we are touching all these lines, also change from the four floats into a vec4. This allows further clean-up in the next patch. This makes the code easier to read. Behavior and results are unchanged. Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>