From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yann E. MORIN Date: Tue, 23 Aug 2016 23:43:51 +0200 Subject: [Buildroot] [PATCH 1/4] package/libegl: add option for wayland extensions In-Reply-To: <20160823220245.49e1b6e7@free-electrons.com> References: <6d4c564432948310ca9502dc94c2d50a7c97f460.1471968455.git.yann.morin.1998@free.fr> <20160823220245.49e1b6e7@free-electrons.com> Message-ID: <20160823214351.GE5749@free.fr> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Thomas, All, On 2016-08-23 22:02 +0200, Thomas Petazzoni spake thusly: > 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. That's because not everything was converted. Yet. Regards, Yann E. MORIN. -- .-----------------.--------------------.------------------.--------------------. | Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: | | +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ | | +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no | | http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. | '------------------------------^-------^------------------^--------------------'