> So what you do is, you keep stepping this number up 1 millisecond at a time while playing a smooth animation, until you’ve eliminated any stuttering in the animation. And now you have done something X11 cannot do- eliminated screen tearing with the absolute minimum latency cost possible.
This should be a debugging tool, not something and users should have to do. The system should have a software PLL control system to make sure the rendering starts at the last possible second and not later.
Also, it should be using current mouse pose + velocity to predict where your mouse will be at display time although that may be harder with generic x86 architecture - not sure there’s any software knowledge of what the display scan out time is as it can depend on the physical properties of the display.
This should be a debugging tool, not something and users should have to do. The system should have a software PLL control system to make sure the rendering starts at the last possible second and not later.
Also, it should be using current mouse pose + velocity to predict where your mouse will be at display time although that may be harder with generic x86 architecture - not sure there’s any software knowledge of what the display scan out time is as it can depend on the physical properties of the display.