Hi Rob, Thanks for your answer and your example (https://github.com/robclark/kmscube/blob/master/kmscube.c). I understood standalone KMS without x11 (as written by you @ http://lists.freedesktop.org/archives/dri-devel/2012-September/027348.html ). But, looking at Linux Graphics stack (http://en.wikipedia.org/wiki/File:Linux_Graphics_Stack_2013.svg), I am confused. Does libGL calls always directly calls libDRM and never to x-server? If so, then how simple gl example ‘drawf.c’ (http://www.glprogramming.com/red/chapter08.html) using glBitmap() work well when x11 server running? Also, when switching between multiple windows, x server running in backgroung, why drm_mode_addfb (DRM_IOCTL_MODE_ADDFB) getting called many times? (as I think, fb might have already created for multiple windows.) Thanks for your patience, Rob. Akash Hajari. On 1/14/14, Rob Clark <robdclark@xxxxxxxxx> wrote: > On Tue, Jan 14, 2014 at 5:15 AM, Akash Hajari <akashhajari@xxxxxxxxx> > wrote: >> Hi, >> I am new to DRM & KMS and I had seen your pdf named "why & how to use kms >> as >> your user space display api if choice". >> I have to understand initial mode setting flow of x server. So is it >> located in /xorg-server/hw/xfree86/modes/ or some where else? > > > currently it is in each different DDX driver (for example, > xf86-video-intel, xf86-video-modesetting, etc) > > Perhaps either tests/modetest/modetest.c (in libdrm tree) or kmscube > (https://github.com/robclark/kmscube/blob/master/kmscube.c) might be a > simpler stand-alone example to look at (the former does only modeset, > the later does modeset + gl) > >> And, I don't know use control node. What's use of /dev/dri/control node? > > I don't think it is really used for much yet.. but mostly people just > use drmOpen() in libdrm and it figures out what device file to open. > > BR, > -R > >> >> Akash Hajari. >> >> _______________________________________________ >> dri-devel mailing list >> dri-devel@xxxxxxxxxxxxxxxxxxxxx >> http://lists.freedesktop.org/mailman/listinfo/dri-devel >> > _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
