On Tue, 4 Feb 2014 14:40:21 +0100 (CET) Michael Van Canneyt <mich...@freepascal.org> wrote:
> The GUI is for use by humans. That means that there is no point whatsoever > in updating the GUI more than 10 times per second: the human eye cannot > process information faster than that, let alone that the brain can grasp > the *meaning* of what the eye has seen in such a short time. <snip> > if I play a video at full HD, 1 thread handles the screen display. It works > just fine, Combining these two statements sounds like you are running your video at 10 frames per second, which you hopefully don't do. And I am very interested where you got the limitations for the human eye from. Knowing a thing or two about animation I have heard quite different values. Examples: Nearly everyone I know at least feels a difference between an animation running in 60 FPS and one in 30 FPS (both frame rates need the eye and brain to process faster than your claimed 10 updates a second, else there would be no difference). The USAF tested their pilots visual response time by flashing a picture of an aircraft on a screen in a dark room for 1/220th of a second. The pilots were consistently able to identitfy the shown craft. There are more examples but I am not interested in starting a discussion about this. Closing I must admit that for a GUI 10 FPS is mostly enough. It is just that 1/10th of a second as the human eyes limit sounds way to low to me. R. -- _______________________________________________ Lazarus mailing list Lazarus@lists.lazarus.freepascal.org http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
