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Re:5K iMac Gets 10-Bit Color by 9point6 on Tuesday November 03, 2015 @07:04AM (#10498986)
I wonder why it's not ARG10101010 for 10-bit RGB + Alpha

Surely it's not actually 2 bit Alpha in ARG2101010

Re:5K iMac Gets 10-Bit Color by makomk on Tuesday November 03, 2015 @01:01PM (#10501264)
The alpha part of the framebuffer isn't actually used because monitors don't support an alpha channel, it's just convenient to pad everything out to 32 bits anyway.