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Remove cHRM check to accomodate ACES AP1 #579

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Remove cHRM check to accomodate ACES AP1 #579

wants to merge 1 commit into from

Commits on Sep 4, 2024

  1. Remove cHRM check to accomodate ACES AP1 

    ACES AP1 has a red endpoint with a negative Z, this triggers the checks
in libpng that ensure that x, y and z (chromaticities) are all >=0.
This removes the checks on the sign of the chromaticities since it is
valid to use negative values for any of them and converts the "internal"
error code return to external (because the internal cases correspond to
negative x, y or z.)

Signed-off-by: John Bowler <jbowler@acm.org>
    @jbowler
    jbowler committed Sep 4, 2024
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