I'm building a multi-pass CoreImage filter that invokes two kernels
in series. The second kernel depends on the fact that the output
from the first kernel may contain floating-point pixel values
greater than 1.0. This seems to work fine for the RGB components
but alpha seems to behave differently. It appears the alpha
component is being clamped to a smaller value than the others
(perhaps 1.0). Is alpha indeed treated differently than the RGB
components, and if so is there anything I can do to stop this from
happening?
All components are treated the same when passing values from one
filter to another.
John
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