>> - libdrm: used as a last resource fall-back after the above two. the >> sole option used by *BSD, MacOS and Android.
Hi, Unless I am missing something, libdrm is not used on MacOS. On osx, EGL_PLATFORM=x11 eglGetDisplay(NULL) calls dri2_initialize_x11 which fallback to dri2_initialize_x11_swrast. Though libdrm can be built and then EGL_PLATFORM=drm eglGetDisplay(NULL) calls dri2_initialize_drm which fallback to swrast . But not sure how gbm surfaces are useful. And there is no kernel side for drm on darwin right ? Speaking about egl, on linux+x11, the driver name is retrieved with xcb_dri2_connect_driver_name (except swrast which is harcoded) and then loaded with dri2_open_driver (= dlopen of %s_dri.so) So this mechanism is not either libudev, sysfs or libdrm. Am I missing something (or is it part of sysfs) ? Or the X server internally will use one of these 3 ? Also any plan to support eglQueryDevicesEXT ( https://www.khronos.org/registry/egl/extensions/EXT/EGL_EXT_device_enumeration.txt) ? On 9 July 2015 at 22:00, Emil Velikov <emil.l.veli...@gmail.com> wrote: > On 09/07/15 15:40, Axel Davy wrote: > > On 09/07/2015 15:33, Emil Velikov wrote : > >> > >> Yakes forgot about that one. From a quick look we can (I know it feels > >> durty) use readlink( > >> /sys/dev/char/$(major):$(minor)). > >> > >> Everything seems to be there - bus type and exact location of the > >> device on the bus. It's limited to sysfs users, but they are more than > >> the libudev ones (perhaps not by much). How does that sound ? > >> > >> Cheers, > >> Emil > >> > > The idea behind using udev for the tag was that arbitrary tag could be > > used, > > especially to identify usb devices. > > > So avoid breaking peoples' setup the above example can be used to > produce the very same tag(s). Regardles if it's a device on the pci or > usb bus. Speaking of usb, are there any devices supported with upstream > mesa ? > > -Emil > > _______________________________________________ > mesa-dev mailing list > mesa-dev@lists.freedesktop.org > http://lists.freedesktop.org/mailman/listinfo/mesa-dev >
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