On Wed, Mar 09, 2016 at 10:15:17AM -0300, Alberto Simón Francés wrote: > Hello, > > I have a question with regards to the libdrm library. I'm currently working > on an app that relies on KMS, DRM and EGL to output accelerated graphics > without a display server in between. It does so to reduce input latency. > The system this app will run is connected to a CRT monitor and I'd like to > be able to switch resolutions in order to use the best resolution depending > on the input of the user and do so as fast as possible. I understand that > this might pose problems to the user but it will run on a custom > installation of Linux devoted just to this application. It doesn't need to > interact with other apps at all. > > The problem I have is that I haven't found info on how I would go about > doing this with libdrm. I need to be able to set custom timings to drive > the display, since it's not just about driving the monitor with standard > resolutions. This monitor doesn't report correct EDID info and won't report > it either. Currently it's using a single default resolution I baked in, but > the idea is to be able to switch between them. > > I know that this is possible by drivers, I've seen examples in the drivers > themselves, but I still haven't been able to make the connection since the > documentation on the specific calls, functions and structures is sparse. > > I'd appreciate any help you could give me or any pointers. Just populate a drmModeModeInfo with whatever custom timings you want, and then feed it to drmModeSetCrtc(). -- Ville Syrjälä Intel OTC _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
