On 10/21/2016 03:20 PM, Adam Williamson wrote: > Out of curiosity, do you know if that's hidpi-style 'scale everything' > scaling, or is it just font size scaling? It's hidpi-style 'scale everything'. Apps can either natively draw at 1.5x or 1.25x, or be scaled by the compositor (with what looks like a bicubic approximation). > I read somewhere that Apple came up with a trick for doing 1.5x hidpi > scaling - they just scale everything 3x in software then tell the GPU > to scale it back down by 2x on output. Which is a neat wheeze. Be > trickier to do 1.25x that way, though. Yup, in theory this should be implementable by a Wayland compositor, too. The downside is that this approach is disastrous to memory bandwidth - you're rendering over double the number of pixels that you need to, and then you have to sample from all of those pixels in the compositor, too. It's also not compatible with hinting (which Apple doesn't do anyway). _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx
