Le mercredi 18 mars 2020 à 11:05 +0100, Michel Dänzer a écrit : > On 2020-03-17 6:21 p.m., Lucas Stach wrote: > > That's one of the issues with implicit sync that explicit may solve: > > a single client taking way too much time to render something can > > block the whole pipeline up until the display flip. With explicit > > sync the compositor can just decide to use the last client buffer if > > the latest buffer isn't ready by some deadline. > > FWIW, the compositor can do this with implicit sync as well, by polling > a dma-buf fd for the buffer. (Currently, it has to poll for writable, > because waiting for the exclusive fence only isn't enough with amdgpu) That is very interesting, thanks for sharing, could allow fixing some issues in userspace for backward compatibility. thanks, Nicolas
