<html> <head> <style></style></head> <body class='hmmessage'><div dir='ltr'>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/fbdev-backend/wayland-backend/x11-backend? Best regards. Andy <div>> Date: Thu, 14 Aug 2014 16:57:26 +0300 > From: ppaalanen@gmail.com > To: williamyang13@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 <williamyang13@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$B"M(BEGL/OpenGLES/$B"M(BlibDRM$B"M(BDRM_xxxx.ko$B"M(Bxxxx.ko$B"M(BGPU? > > Yes, where EGL/OpenGLES is actually Mesa, since you have libdrm there. > This is specific to the open source drivers. > > > Thanks, > pq </div> </div></body> </html>