Hi Carsten Thank you very much for your reply.
> EFL itself doesn't care what the compositor uses for acceleration. efl > supports > either software rendering using shm protocol with wayland that SHOULD work > everywhere on all wayland compositors regardless of any driver infra, types, > acceleration etc. - there is also egl + gles2 rendering support for acelerated > rendering. of course compositor will then need to handle drm buffers etc. to > make this work. If i choose software rendering using shm protocol,dose weston(compositor) use fbdev-backed? My senario is that my target device do not support hardware accelerate.(do not use gpu) But i have to use EFL to develop application in wayland/weston platform. In order to achieve my task,how do i setup weston? Best regards. Andy > Date: Mon, 18 Aug 2014 15:02:47 +0900 > From: ras...@rasterman.com > To: williamyan...@hotmail.com > CC: ppaala...@gmail.com; wayland-devel@lists.freedesktop.org > Subject: Re: [Help]Question about graphics architecture for weson/wayland > > On Mon, 18 Aug 2014 05:32:41 +0000 Yang Andy <williamyan...@hotmail.com> said: > > > Hi Pekka > > > > Thank you very much for your reply. > > > > > > 3.In order to run weston-launch,do i have to use gpu? > > > No, you can choose e.g. the fbdev backend for Weston, and so Weston > > > will run on the /dev/fb, software rendered. No GPU used there in that > > > sense. Software rendering also means that no application under Weston > > > can use the GPU for rendering windows. > > > > If i choose fbdev backend for weston,can i use EFL/Evas and EGL/OpenGL for > > draw graphics? I mean that EGL/OpenGL which implement Software rendering. > > > > What the difference between > > drm-backend/fbdbin/eolian/impl_generator.c:ev-backend/wayland-backend/x11-backend? > > EFL itself doesn't care what the compositor uses for acceleration. efl > supports > either software rendering using shm protocol with wayland that SHOULD work > everywhere on all wayland compositors regardless of any driver infra, types, > acceleration etc. - there is also egl + gles2 rendering support for acelerated > rendering. of course compositor will then need to handle drm buffers etc. to > make this work. > > > Best regards. > > > > Andy > > > Date: Thu, 14 Aug 2014 16:57:26 +0300 > > > From: ppaala...@gmail.com > > > To: williamyan...@hotmail.com > > > CC: wayland-devel@lists.freedesktop.org > > > Subject: Re: [Help]Question about graphics architecture for weson/wayland > > > > > > On Thu, 14 Aug 2014 08:36:43 +0000 > > > Yang Andy <williamyan...@hotmail.com> wrote: > > > > > > > Hi everyone > > > > > > > > When i run 3D application through weston-launch, it failed because the > > > > graphics driver is not right. > > > > > > weston-launch starts weston, you cannot use it to launch something else. > > > > > > > I have some questions for help. > > > > > > > > 1.Is there any requirement for Hardware(GPU??) / Drivers? > > > > > > Yes, see hardware enabling at > > > http://wayland.freedesktop.org/architecture.html > > > > > > > 2.Is DRM must for weston(compositor),how to setup DRM? > > > > > > Weston's DRM backend depends on DRM. Make sure your kernel has a DRM > > > driver for your graphics chip. > > > > > > > 3.In order to run weston-launch,do i have to use gpu? > > > > > > No, you can choose e.g. the fbdev backend for Weston, and so Weston > > > will run on the /dev/fb, software rendered. No GPU used there in that > > > sense. Software rendering also means that no application under Weston > > > can use the GPU for rendering windows. > > > > > > You can also choose Weston's DRM backend with the software (Pixman) > > > renderer. That will not use the GPU either, but does need DRM and KMS. > > > > > > > 4.Does GPU kernel drvier consist of kernel/driver/gpu/xxxx(xxxx.ko??) > > > > and > > > > of kernel/driver/gpu/drm/xxxx(DRM_xxxx.ko)? > > > > > > Roughly yes. > > > > > > > 5.Does user side drvier consist of EGL/OpenGLES? > > > > > > The user space side of the driver usually implements EGL and OpenGL > > > (desktop/ES/whatever). > > > > > > > 6.graphics architecture is > > > > Application⇒EGL/OpenGLES/⇒libDRM⇒DRM_xxxx.ko⇒xxxx.ko⇒GPU? > > > > > > Yes, where EGL/OpenGLES is actually Mesa, since you have libdrm there. > > > This is specific to the open source drivers. > > > > > > > > > Thanks, > > > pq > > > > -- > ------------- Codito, ergo sum - "I code, therefore I am" -------------- > The Rasterman (Carsten Haitzler) ras...@rasterman.com >
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