Wayland Protocols 1.47 Released With Updated Color Management Protocol

Following the Color Management protocol introduced in Wayland Protocols 1.41, out today is Wayland Protocols 1.47 with various revisions to that color management and HDR support.

The Wayland color management protocol has now loosened restrictions on maxCLL and maxFALL since it isn't mandated by the ANSI/CTA-861-H specification and some movies having a maxCLL rather than the Mastering Display Luminance. Thus the prior behavior was determined to be too strict and is now loosened.

Another shortcoming of color-management-v1 is that the description identity is a 32-bit number when it should have been a 64-bit number. As a 32-bit image description identity number if allocated 100 times per second it could theoretically wrap around in 1.4 years... For anyone running a Wayland compositor and keeping an uptime of more than 1.4 years, the ready2 event now mandates a 64-bit image description ID number.