From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Tue, 23 Aug 2016 22:02:45 +0200 Subject: [Buildroot] [PATCH 1/4] package/libegl: add option for wayland extensions In-Reply-To: <6d4c564432948310ca9502dc94c2d50a7c97f460.1471968455.git.yann.morin.1998@free.fr> References: <6d4c564432948310ca9502dc94c2d50a7c97f460.1471968455.git.yann.morin.1998@free.fr> Message-ID: <20160823220245.49e1b6e7@free-electrons.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hello, On Tue, 23 Aug 2016 18:26:32 +0200, Yann E. MORIN wrote: > Wayland requires that an OpenGL/EGL implementation provides a few > extensions, so that wayland servers and clients can exchange buffers. > > Currently, only one OpenGL/EGL implementation provides those extensions: > mesa3d. > > However, other implementations are catching up, especially the > proprietary NVidia driver, which has as of late introduced those > extensions. Other, non-public implementations may also provide those > extensions. > > A lot of wayland-related packages require those extensions, and > currently they have to depend on mesa3d to provide OpenGL/EGL, which > precludes using those packages when a non-mesa3d provider is enabled, > even when that providers implements the necessary extensions. > > Add an option to the libegl virtual package, that providers on > OpenGL/EGL can select to state they provide those extensions. > > Pacakges that need those extensions can additionally depend on this new > option, instead of the existing libegl package. > > Signed-off-by: "Yann E. MORIN" > --- > package/opengl/libegl/Config.in | 4 ++++ > 1 file changed, 4 insertions(+) Applied to next, thanks. One thing that surprises me though is that weston itself doesn't use this new option, and still has: config BR2_PACKAGE_WESTON_DRM bool "DRM compositor" depends on BR2_PACKAGE_MESA3D_OPENGL_EGL select BR2_PACKAGE_LIBDRM select BR2_PACKAGE_WESTON_HAS_COMPOSITOR # Uses libgbm from mesa3d comment "DRM compositor needs an OpenGL EGL backend provided by mesa3d" depends on !BR2_PACKAGE_MESA3D_OPENGL_EGL So it's weird to have a new OpenGL implementation that is said to be Wayland capable, but doesn't allow to build the reference Wayland implementation. Thomas -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com