Simon Ser 5dfaf5ea9c backend/drm: introduce wlr_drm_bo_handle_table ... Using GBM to import DRM dumb buffers tends to not work well. By using GBM we're calling some driver-specific functions in Mesa. These functions check whether Mesa can work with the buffer. Sometimes Mesa has requirements which differ from DRM dumb buffers and the GBM import will fail (e.g. on amdgpu). Instead, drop GBM and use drmPrimeFDToHandle directly. But there's a twist: BO handles are not ref'counted by the kernel and need to be ref'counted in user-space [1]. libdrm usually performs this bookkeeping and is used under-the-hood by Mesa. We can't re-use libdrm for this task without using driver-specific APIs. So let's just re-implement the ref'counting logic in wlroots. The wlroots implementation is inspired from amdgpu's in libdrm [2]. Closes: https://github.com/swaywm/wlroots/issues/2916 [1]: https://gitlab.freedesktop.org/mesa/drm/-/merge_requests/110 [2]: 1a4c0ec9ae/amdgpu/handle_table.c		2021-08-25 10:05:37 -04:00
..
bo_handle_table.h	backend/drm: introduce wlr_drm_bo_handle_table	2021-08-25 10:05:37 -04:00
cvt.h	backend/drm: add support for custom modes	2019-10-27 10:46:47 -04:00
drm.h	backend/drm: introduce wlr_drm_bo_handle_table	2021-08-25 10:05:37 -04:00
iface.h	backend/drm: introduce wlr_drm_bo_handle_table	2021-08-25 10:05:37 -04:00
properties.h	backend/drm: add support for FB_DAMAGE_CLIPS	2021-08-18 20:59:25 +02:00
renderer.h	backend/drm: introduce wlr_drm_bo_handle_table	2021-08-25 10:05:37 -04:00
util.h	backend/drm: introduce wlr_drm_bo_handle_table	2021-08-25 10:05:37 -04:00