Re: [PATCH RFC wayland-protocols] Add secure output protocol

2018-11-20 Thread Scott Anderson
Hi, As far as I understand, the different types and versions of protection a client would want is based on the resolution of the content, rather than anything about what the content actually is. Is there any particular reason a client would care if their content is being used on a higher HDCP

[PATCH wayland-protocols v2] unstable/linux-dmabuf: add wp_linux_dmabuf_hints

2018-11-20 Thread Simon Ser
On multi-GPU setups, multiple devices can be used for rendering. Clients need hints about the device in use by the compositor. For instance, if they render on another GPU, then they need to make sure the memory is accessible between devices and that their buffers are not placed in hidden memory. T

Re: question about drm backend

2018-11-20 Thread Pekka Paalanen
On Tue, 20 Nov 2018 20:32:53 +0800 zou lan wrote: > Hi pekka > > Thank you so much to explain the drm backend details. I ask these because > some company may implement their own drm backend, changes on interfaces > between libweston > and drm backend may increase the merge effort. > > Could I a

Re: question about drm backend

2018-11-20 Thread zou lan
Hi pekka Thank you so much to explain the drm backend details. I ask these because some company may implement their own drm backend, changes on interfaces between libweston and drm backend may increase the merge effort. Could I also ask is weston backward compatible from weston 2.0 to weston 5.0

Re: question about drm backend

2018-11-20 Thread Pekka Paalanen
On Tue, 20 Nov 2018 17:37:34 +0800 zou lan wrote: > Hi pekka > > Thank you for your reply. I have other questions about drm backend. > I find weston 5.0 modify so much about drm backend and the interfaces of > compositor communicate with drm backend. > Is there any documents about the drm backe

Re: question about drm backend

2018-11-20 Thread zou lan
Hi pekka Thank you for your reply. I have other questions about drm backend. I find weston 5.0 modify so much about drm backend and the interfaces of compositor communicate with drm backend. Is there any documents about the drm backend design? Why compositor need to add a structure weston_head? I