First of all, Thanks. I suppose the egl-drm will use /usr/lib/dri/* drivers, what does the pipe_swrast.so for? and why we can't use swrast with DRM? It seems drmdpy->event_handler->new_drm_screen at gallium/state_trackers/egl/drm/native_drm.c is just for it. By the way, <a href="http://configure.ac">configure.ac</a>: if test "$mesa_driver" = dri; then # build egl_dri2 when xcb-dri2 is available PKG_CHECK_MODULES([XCB_DRI2], [x11-xcb xcb-dri2 xcb-xfixes], [have_xcb_dri2=yes],[have_xcb_dri2=no]) Would there need some kind of warnings about package missing or just don't check them up to users? Best Regards, <div class="gmail_quote"> Arthur 2011/1/30 Chia-I Wu <<a href="mailto:olvaffe@gmail.com">olvaffe@gmail.com</a>> <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> <div class="im">On Sat, Jan 29, 2011 at 10:19 PM, Arthur Zhu <<a href="mailto:xiaoxiaomuyusajiangtian@gmail.com">xiaoxiaomuyusajiangtian@gmail.com</a>> wrote: > > drmdpy->event_handler->new_drm_screen(&drmdpy->base, name, drmdpy->fd); > > Dose there have a chance to call new_sw_screen? </div>You cannot use swrast with DRM. Judging by the log below, you have an i915 card. It is best supported by egl_dri2, which is not enabled in your build. You might want to make sure you have the necessary -dev packages installed (xcb-dri2, xcb-fixes, and libudev) and rebuild mesa. <div><div></div><div class="h5">> gallium/state_trackers/egl/drm/native_drm.c > > Thanks, > Arthur > > > > wayland/compositor# ./compositor > libEGL debug: added /usr/lib/egl/egl_gallium.so to module array > libEGL debug: added /usr/lib/egl/egl_glx.so to module array > libEGL debug: dlopen(/usr/lib/egl/egl_gallium.so) > libEGL info: use DRM for display 0x5 > libEGL debug: searching for pipe module i915 > libEGL warning: failed to create DRM screen > libEGL debug: EGL user error 0x3001 (other) in eglInitialize(no usable > display) > > libEGL debug: dlopen(/usr/lib/egl/egl_glx.so) > libEGL debug: EGL user error 0x3001 (other) in eglInitialize > > failed to initialize display > GL User Error: calling GL function without a rendering context > GL User Error: calling GL function without a rendering context > GL User Error: calling GL function without a rendering context > GL User Error: calling GL function without a rendering context > GL User Error: calling GL function without a rendering context > GL User Error: calling GL function without a rendering context > libEGL debug: EGL user error 0x3001 (other) in eglCreateDRMImageMESA > > Segmentation fault > > </div></div>> _______________________________________________ > mesa-dev mailing list > <a href="mailto:mesa-dev@lists.freedesktop.org">mesa-dev@lists.freedesktop.org</a> > <a href="http://lists.freedesktop.org/mailman/listinfo/mesa-dev" target="_blank">http://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> > > -- olv@LunarG.com </blockquote></div>