On Wed, 12 Feb 2020 11:07:56 +0000 Carsten Haitzler <[email protected]> wrote:
> On Wed, 12 Feb 2020 12:40:15 +0200 Pekka Paalanen <[email protected]> said: > > > On Wed, 12 Feb 2020 10:21:02 +0000 > > Carsten Haitzler (The Rasterman) <[email protected]> wrote: > > > > > even better - if the /dev/dri/card0 > > > device exists, dlopen libdrm and get some symbols from it and ... use it > > > to > > > request the drm device sent you vsync events so you can use the vsync > > > interrupt as your frame event. this will be another fd to listen on in > > > select() and of course you can turn this vblank event stream on and off. > > > > Please don't. Talk to the X server instead. > > and what vsync events does the xserver provide? You don't want vsync events. You have no idea what they correspond to, or even if you opened the right device. https://gitlab.freedesktop.org/xorg/proto/xorgproto/blob/master/presentproto.txt Thanks, pq
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