Commit Graph

1261 Commits

Author SHA1 Message Date
Andri Yngvason e136a4168b types/seat: Clear focus in wlr_seat_destroy()
This fixes use-after-free in surface destroy signal listeners.
2021-01-07 14:35:08 +01:00
Simon Ser 07d75c99db render: remove EGL config and visual from wlr_renderer_autocreate
This isn't used anymore by any backend.

Some examples still provide an EGL config to wlr_egl_init, so we can't
drop it yet there.
2021-01-06 12:05:51 +01:00
Ilia Bozhinov 01dcfb360e types: add wlr_xdg_foreign_v2
Co-authored-by: Jason Francis <cycl0ps@tuta.io>
2021-01-05 20:32:56 +01:00
Ilia Bozhinov 162f160def types: add wlr_xdg_foreign_v1
Co-authored-by: Jason Francis <cycl0ps@tuta.io>
2021-01-05 20:32:56 +01:00
Ilia Bozhinov 37602e153b types: add wlr_xdg_foreign_registry 2021-01-05 20:32:56 +01:00
Ilia Bozhinov 42d033e738 xdg-shell: add wlr_xdg_toplevel_set_parent
Co-authored-by: Jason Francis <cycl0ps@tuta.io>
2021-01-05 20:32:56 +01:00
Isaac Freund 83fdfa511d docs: wlr_surface_from_resource cannot return NULL
Surfaces never become inert.
2021-01-05 12:22:47 +01:00
Simon Ser e8d56ca415 backend/session: allow wlr_session_find_gpus to return an error
Sometimes wlr_session_find_gpus will encounter an error. This is
different from finding zero GPUs.

On error, wlr_session_find_gpus already returns -1. However, this is
casted to size_t, so callers uncorrectly assume this is a success.

Instead, make wlr_session_find_gpus return a ssize_t and allow callers
to handle the error accordingly.
2021-01-04 19:46:44 +01:00
Simon Ser 4b03bdc3ab Remove wlr_create_renderer_func_t
This callback allowed compositors to customize the EGL config used by
the renderer. However with renderer v6 EGL configs aren't used anymore.
Instead, buffers are allocated via GBM and GL FBOs are rendered to. So
customizing the EGL config is a no-op.
2020-12-30 17:09:40 +01:00
Isaac Freund f6fc4c2883 subsurface: handle NULL parent in get_root_surface 2020-12-22 15:55:05 +01:00
Isaac Freund c9760569ae docs: fix error in wlr_output_set_damage() comment
output-buffer-local coordinates are neither scaled nor transformed
2020-12-07 20:45:36 +01:00
Dominik Honnef 431ec52b9c xwayland: use pipe instead of SIGUSR1 to signal readiness
Closes: https://github.com/swaywm/wlroots/issues/2154
2020-12-07 12:24:56 +01:00
Simon Ser 513eca8dab
build: add leftover WLR_HAS_LIBCAP
We don't support libcap anymore. This was left as a comment by Meson:

    /* #undef WLR_HAS_LIBCAP */
2020-12-03 00:05:38 +01:00
Ilia Bozhinov d2329ac07a xwm: add wlr_xwayland_surface_restack() 2020-11-30 11:29:28 +01:00
Simon Ser 83a5d03bf3 render/egl: remove wlr_egl.external_only_dmabuf_formats
Replace it with wlr_egl.dmabuf_render_formats.
2020-11-30 11:08:44 +01:00
Simon Ser c94ab99ae2 render: rename wlr_renderer_get_formats
Rename wlr_renderer_get_formats to wlr_renderer_get_shm_texture_formats.
This makes it clear those formats are only suitable for shm import.
2020-11-30 11:08:44 +01:00
Simon Ser 49115e9d5d render: rename wlr_renderer_get_dmabuf_formats
Rename wlr_renderer_get_dmabuf_formats to
wlr_renderer_get_dmabuf_texture_formats. This makes it clear the formats
are only suitable for creating wlr_textures.
2020-11-30 11:08:44 +01:00
Simon Ser 5d008d9030 render: introduce wlr_renderer_get_dmabuf_render_formats
It describes which DMA-BUF formats can be used to render.
2020-11-30 11:08:44 +01:00
Simon Ser 61612ecb36 render: remove wlr_renderer_format_supported
Instead, callers can just use wlr_renderer_get_formats and iterate over
the list.

This function was unused in wlroots.
2020-11-30 11:08:44 +01:00
Simon Ser c15ca3793e render: expand wlr_renderer_get{,_dmabuf}_formats docs
Make it clear formats returned are only suitable for import/sampling.
These formats can't be used to be rendered to.
2020-11-30 11:08:44 +01:00
Kenny Levinsen ebecc5404b surface: Make send_enter store entered outputs
wlr_surface_send_enter now stores outputs that have been entered.
Combined with a new 'bind' event on wlr_output, this allows us to delay
enter events as necessary until the respective wl_output global has been
bound.

Closes: https://github.com/swaywm/wlroots/issues/2466
2020-11-23 10:58:50 +01:00
Simon Ser 0e76f92de7 backend/session: replace session_signal with events.active
This is more idiomatic wlroots API. The new name makes it clear that the
signal is emitted when wlr_session.active changes.
2020-11-19 22:47:49 +01:00
Simon Ser fbf11a41e1 backend/session: wait for DRM device if none found
Wait for a DRM device if none is found in wlr_session_find_gpus. This
can happen if the compositor is loaded before the display kernel driver.

This supersedes the logind CanGraphical property.

To test, e.g. with i915 and sway:

    rmmod -f i915
    sway &
    modprobe i915

Closes: https://github.com/swaywm/wlroots/issues/2093
2020-11-19 22:47:49 +01:00
Simon Ser 76bcddf071 backend/session: introduce wlr_session.events.add_drm_card
This is triggered when a new DRM card is added.

An easy way to test this patch is `modprobe vkms`.
2020-11-19 22:47:49 +01:00
Simon Ser 44a4792fd8 backend/session: operate on wlr_device
Instead of operating on FDs in {open,close}_device, operate on
wlr_devices. This avoids the device lookup in wlr_session and allows
callers to have access to wlr_device fields.

For now, we use it to remove wlr_session_signal_add and replace it with
a more idiomatic wlr_session.events.change field. In the future, other
events will be added.
2020-11-19 22:47:49 +01:00
Ilia Bozhinov 6284af121f texture: document that functions should not be called while rendering 2020-11-19 11:35:04 +01:00
Simon Ser e18599b05e render/egl: stop including eglmesaext.h
This is a Mesa-specific header that was needed because some Wayland EGL
extensions were missing from the Khronos registry. Now that this has
been fixed [1] and Mesa [2] & glvnd [3] have sync'ed their headers, we
can drop this workaround.

[1]: https://github.com/KhronosGroup/EGL-Registry/pull/95
[2]: https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4953
[3]: https://gitlab.freedesktop.org/glvnd/libglvnd/-/merge_requests/225
2020-11-19 00:42:09 +01:00
Simon Ser eb8360bda3 render: introduce wlr_renderer_get_drm_fd 2020-11-15 22:54:07 +01:00
Simon Ser c8d95acc37 render/egl: introduce wlr_egl_dup_drm_fd 2020-11-15 22:54:07 +01:00
Simon Ser c88c54fb38 render: introduce wlr_renderer_bind_buffer 2020-11-15 22:48:42 +01:00
Simon Ser 0b40d09a21 buffer: add wlr_client_buffer_get 2020-11-15 22:48:42 +01:00
Isaac Freund e06c9e43af Remove unneeded includes from wlr_input_device.h
This uncovered many places where we were using things without directly
including them.
2020-11-11 15:40:47 +01:00
Isaac Freund 0724b3c453 Use uint32_t in wlr_renderer_begin signature
This matches the signature of wlr_renderer_impl.begin
2020-11-11 11:01:46 +01:00
Isaac Freund 7693f61d81 Replace wlr_key_state with wl_keyboard_key_state
There's no reason to have duplicate enums
2020-11-11 10:58:38 +01:00
Isaac Freund 8348fc3ef8 xwayland: remove unused listener 2020-11-05 13:18:04 +01:00
Simon Ser 51fc7ddb29 screencopy: perform DMA-BUF copy on output commit 2020-11-05 09:43:42 +01:00
Simon Ser f0945e112f export-dmabuf: export DMA-BUF on output commit
We were previously exporting DMA-BUFs when receiving the capture_output
request, and sending a done event on wlr_output.events.precommit. Instead,
export and send done on wlr_output.events.commit.
2020-11-05 09:43:42 +01:00
Simon Ser 8c8164c4a6 output: add when field to wlr_output_event_commit
Similar to the one already present in wlr_output_event_precommit.
2020-11-05 09:43:42 +01:00
Simon Ser ccd313e01a output: update docs to reflect reality
The docs were outdated and weren't matching what the DRM backend does
(the only implementor of wlr_output_export_dmabuf).
2020-11-05 09:43:42 +01:00
Simon Ser c2db691cad gamma-control-v1: apply gamma LUT when output gets enabled
Closes: https://github.com/swaywm/wlroots/issues/2372
2020-11-03 17:47:04 +01:00
Simon Ser f0ddcd361e
render: define EGL_NO_PLATFORM_SPECIFIC_TYPES (#2452)
This avoids Xlib.h inclusion via EGL headers. See [1] for discussion.

This change is based on a Weston commit [2].

[1]: https://github.com/KhronosGroup/EGL-Registry/pull/111
[2]: https://gitlab.freedesktop.org/wayland/weston/commit/526765ddfdfd
2020-11-02 10:51:52 +01:00
Tudor Brindus 0f9b2bfa64 render/dmabuf: use bitmask for wlr_dmabuf_attributes_flags 2020-10-31 23:15:21 +01:00
Tudor Brindus 368d0146fb util/edges: use bitmask for wlr_edges 2020-10-31 23:15:21 +01:00
Tudor Brindus 0fdb41fe7c types/wlr_output_layout: use bitmask for wlr_direction 2020-10-31 23:15:21 +01:00
Tudor Brindus 7c6e06fd13 types/wlr_keyboard: use bitmasks for wlr_keyboard_led and wlr_keyboard_modifier enums 2020-10-31 23:15:21 +01:00
Daniel Kondor 36395e5b1c
foreign-toplevel-management: report parent toplevel
Based on the wlr-protocols PR:
https://github.com/swaywm/wlr-protocols/pull/52
2020-10-18 17:14:35 +02:00
Isaac Freund e410ff8dd4 wlr_drag: remove unused point_destroy field 2020-10-18 15:17:28 +02:00
Isaac Freund 616f06c25c xdg_positioner: remove unused field
The resource field of wlr_xdg_positioner is never initialized or
accessed within wlroots. The wl_resource for this interface is stored
in the wlr_xdg_positioner_resource struct.
2020-10-16 12:49:37 +02:00
Ilia Bozhinov 99f3c643bf xwayland: add set_geometry event
This is necessary to react to changes in position of override-redirect
views.
2020-10-14 21:49:51 +02:00
Isaac Freund 8ad2cc39eb layer-shell: add for_each_popup
This brings the layer-shell api in line with that of xdg-shell and
avoids reimplementing this function in every compositor in order to
render layer shell popups correctly.
2020-09-10 17:44:55 +02:00
Drew DeVault a9cbfd950e Remove xdg-shell v6
Ding dong the witch is dead

Fixes #2381
2020-09-03 00:01:10 +02:00
Simon Ser b0144c7ded output-power-management-v1: listen to output commit 2020-08-27 13:54:19 -06:00
Simon Ser c674241ec0 output: introduce wlr_output_event_commit
This event contains a `committed` bitfield, which allows callers to know
which output fields changed during the commit.

This allows users to setup a single atomic commit listener, instead of
setting up one listener for each event (mode, scale, transform, and so
on).

References: https://github.com/swaywm/wlroots/issues/2098
2020-08-27 13:54:19 -06:00
Isaac Freund 2072d59da5 xdg-shell: split last-acked and current state
These states are distinct in the time period between the ack_configure
and the next commit on the surface. Splitting these states avoids the
following race for example:

- client starts at 1000x1000
- wlr_xdg_toplevel_set_size 500x500
- size is different -> configure sent
- client acks the configure
- wlr_xdg_toplevel_set_size 1000x1000
- compare_xdg_toplevel_state returns true since there is no pending
  configure and the currently committed size is still 1000x1000
- no new configure is sent
- client commits at the size it last acked, 500x500
2020-08-27 12:36:29 +02:00
Kenny Levinsen bad1e9afa8 session: Add libseat backend 2020-08-24 11:13:55 +02:00
Simon Ser 26af316b3b render/gles2: make wlr_gles2_texture_from_* private
These functions are unused by compositors (see e.g. [1]) and prevent
wlr_gles2_texture from accessing wlr_gles2_renderer state. This is an
issue for proper teardown [2] and for accessing GLES2 extensions.

[1]: https://github.com/swaywm/wlroots/pull/1962#issuecomment-569511830
[2]: https://github.com/swaywm/wlroots/pull/1962
2020-07-28 06:59:07 -06:00
Tobias Langendorf bd387da62d xwm: add support for xwayland minimize 2020-07-21 13:20:17 +02:00
Tudor Brindus a145430afa
input/pointer: add wlr_seat_pointer_wrap
It allows a compositor to do things like skip motion events on pointer
constraint unlock.

References: https://github.com/swaywm/sway/pull/5431
2020-07-15 19:31:13 +02:00
xdavidwu 595f324f8b input-method: implement keyboard grabs 2020-07-08 11:21:57 +02:00
xdavidwu 61e2ebac90 virtual-keyboard: add wlr_input_device_get_virtual_keyboard 2020-07-08 11:21:57 +02:00
Isaac Freund 92c85858a9 layer-shell: remove unused surface list
This was rendered useless in 5cde359.
2020-07-07 12:11:31 +02:00
Simon Ser c611a8f7e7 output: add backend docs 2020-06-30 08:03:58 -06:00
Simon Ser bf93d2e67c output: rename impl->rollback to rollback_render
The output backend API is now mostly state-less thanks to the atomic
hooks (commit and test). There is one exception though: attach_render.
This function makes the rendering context current. However sometimes the
compositor might decide not to render after attach_render (e.g. when
there's nothing new to render to the back buffer). Thus
wlr_output_rollback has been introduced to revert the pending state.

Because the output backend API is mostly state-less, the only thing
wlr_output_impl.rollback needs to do is revert the current rendering
context. Rename the function to rollback_render to make this clear. Add
a check in the common wlr_output code to only call rollback_render when
attach_buffer has been previously called.

On the long term, we'll be able to remove attach_render and
rollback_render together.
2020-06-19 11:50:42 -06:00
Simon Ser 9e68ed2159 viewporter: new protocol implementation
Closes: https://github.com/swaywm/wlroots/issues/633
2020-06-17 09:10:54 -06:00
Simon Ser c618a76540 surface: introduce wlr_surface_get_buffer_source_box
This helper allows compositors to retrieve the buffer source box in
buffer-local coordinates.
2020-06-17 09:10:54 -06:00
Simon Ser eb22ae97b0 surface: add wlr_surface_state.viewport
This field contains the viewport source and destination parameters. It's
intended to be updated by a third-party protocol, for instance
viewporter.
2020-06-17 09:10:54 -06:00
Simon Ser 315bf08733 render: add wlr_render_subtexture_with_matrix
This renders only a subset of the texture, instead of the full texture.
2020-06-17 09:10:54 -06:00
Simon Ser 00ccb89288 util/region: add wlr_region_scale_xy 2020-06-17 09:10:54 -06:00
Simon Ser 9814213a91 box: add wlr_fbox
Same as wlr_box, but for floating-point numbers.
2020-06-17 09:10:54 -06:00
Simon Ser 79e03c7d45 output: document wlr_output_export_dmabuf 2020-06-09 07:12:43 -06:00
Simon Ser a8a4a12c4b buffer: document wlr_buffer_get_dmabuf DMA-BUF lifetime 2020-06-09 07:12:43 -06:00
Andri Yngvason ea83957ecc screencopy: Implement copying into linux-dmabuf 2020-06-08 20:49:41 +02:00
Andri Yngvason b64a8a7f98 render: Add wlr_renderer_blit_dmabuf() 2020-06-08 20:49:41 +02:00
Andri Yngvason 11b598fe33 render: egl: Add utility functions for saving/restoring context 2020-06-08 20:49:41 +02:00
Simon Ser a3ba82885c render: choose DMA-BUF texture target via eglQueryDmaBufModifiersEXT
EGL_EXT_image_dma_buf_import_modifiers tells us whether we should use
GL_TEXTURE_2D or GL_TEXTURE_EXTERNAL_OES. Using the right texture target
can fix some failures and/or improve performance on some drivers.

This does the same as a Weston commit [1].

[1]: https://gitlab.freedesktop.org/wayland/weston/commit/40c519a3e613

Closes: https://github.com/swaywm/wlroots/issues/2173
2020-06-06 08:59:38 +02:00
Thomas Hebb dcae6f1431 Allow keyboard and pointer grabs to hook clear_focus()
This is necessary for some grabs, which currently have no way of knowing
when the pointer/keyboard focus has left a surface. For example, without
this, a drag-and-drop grab can erroneously drop into a window that the
cursor is no longer over.

This is the plumbing needed to properly fix swaywm/sway#5220. The
existing fix, swaywm/sway#5222, relies on every grab's `enter()` hook
allowing a `NULL` surface. This is not guaranteed by the API and, in
fact, is not the case for the xdg-shell popup grab and results in a
crash when the cursor leaves a surface and does not immediately enter
another one while a popup is open (#2161).

This fix also adds an assertion to wlr_seat_pointer_notify_enter() that
ensures it's never called with a `NULL` surface. This will make Sway
crash much more until it fixes its usage of the API, so we should land
this at the same time as a fix in Sway (which I haven't posted yet).
2020-06-05 17:20:26 +02:00
Thomas Hebb 8bf9f5bb8b wlr_seat: Clarify wording of non-grab-respecting function comments
I found the previous wording a bit confusing when I first read it.
Reword these comments to explicitly say that the grab-respecting
variants should be used in most cases.

This change has no functional effect.
2020-06-05 17:20:26 +02:00
Thomas Hebb e8c00e918a wlr_seat: Declare functions in the same order for pointer, keyboard, and touch
These three APIs are very similar to one another, but they all had
slightly different function orderings. For consistency, always declare
the non_`notify` functions first, then the `notify` functions, then
`{start,end,has}_grab`.

This change has no functional effect.
2020-06-05 17:20:26 +02:00
Brian Ashworth 32148808ad wlr_keyboard_group: introduce enter and leave
This introduces the enter and leave events for wlr_keyboard_group.

The enter event is emitted when a keyboard is added to the group while a
key is pressed that is not pressed by any other keyboard in the group.
The data is a wl_array of the pressed key codes unique to the keyboard
that should now be considered pressed.

Similarly the leave event is emitted when a keyboard is removed from the
group while at least one key is pressed that is not pressed by any other
keyboard in the group. The data is a wl_array of the pressed key codes
unique to the keyboard that should now be considered released.

The purpose of these events are to allow the compositor to update its
state to avoid corruption. Additionally, for the leave event, the
focused surface may have been notified of a key press for some or all of
the key codes and needs to be notified of a key release to avoid state
corruption.

These were previously emitted as normal key events, but they are not
normal key events. There is no actual key press or release associated
with the events. It's purely for state keeping purposes. Emitting them
as separate events allows the compositor to handle them differently.
Since these are purely for state keeping purposes and are not associated
with an actual key being pressed or released, bindings should not be
triggered as a result of these events.
2020-05-31 17:28:18 -04:00
Kenny Levinsen 5e0ef70cc0 seat: Create inert objects for missing capabilities
We should throw a protocol error if the relevant capability has never
existed when get_(pointer|keyboard|touch) is called. Otherwise, it
should succeed, even if the capability is not currently present.

This follows the spec, and avoids possible races with the client when
capabilities are lost.

Closes: https://github.com/swaywm/wlroots/issues/2227
2020-05-28 09:53:50 +02:00
Simon Ser 2176c63856 xwayland: add option to disable WM 2020-05-19 22:07:47 +02:00
Simon Ser 27609ba0d9 xwayland: split server
Split the server part of wlr_xwayland into wlr_xwayland_server. This
allows compositors to implement their own XWM when wlroots' isn't a good
fit.
2020-05-19 22:07:47 +02:00
Simon Ser 1edc42157b render/egl: introduce wlr_egl_unset_current
This function can be called after wlr_egl_make_current to cleanup the
EGL context. This avoids having lingering EGL contexts that make things
work by chance.

Closes: https://github.com/swaywm/wlroots/issues/2197
2020-05-19 14:56:20 +02:00
Isaac Freund 666498db01 Make wlr_xcursor_manager_load() return a bool
This is currently inconsistent with the rest of the library and a bit of
a footgun for new compositors. However, this breaks the API in a very
unfortunate way for existing compositors.
2020-05-18 16:48:44 +02:00
Simon Ser 347bdb6d9a output: make wlr_output_set_gamma atomic
wlr_output_set_gamma is now double-buffered and applies the gamma LUT on
the next output commit.
2020-05-14 20:09:28 +02:00
Tudor Brindus 7693fdb8a7 tablet: expose wlr_tablet_tool_v2_has_implicit_grab function
This is necessary so that sway can determine when to start emulating
pointer events -- it shouldn't start doing so during an implicit grab,
even if the pen is over a surface that doesn't bind tablet input.

Refs swaywm/sway#5302.
2020-05-14 18:45:19 +02:00
Tudor Brindus 8b18d389b3 input/pointer: notify compositor when constraint region changes
This allows a compositor to know when warping back into the region is
appropriate.

Refs swaywm/sway#5268.
2020-05-13 20:38:12 +02:00
Julien Olivain c2288a7b88
render/egl: include EGL/eglmesaext.h only if present
This patch will make the EGL renderer work on any EGL/GLESv2 driver
providing the EGL_WL_bind_wayland_display extensions.

Mesa used to declare provisional EGL_WL_bind_wayland_display directly
in <EGL/eglext.h>. Then, all unofficial extensions were moved to
<EGL/eglmesaext.h>, to have a cleaner implementation. See:
ab7bb10a2a

The extension was then approved at Khronos Group, and reached the
official <EGL/eglext.h>. See:
https://www.khronos.org/registry/EGL/extensions/WL/EGL_WL_bind_wayland_display.txt
aa9b63f3ab

In order to make sure the renderer will work on any version of any
implementation providing the extension, only include the mesa-specific
header if it's present.

Signed-off-by: Julien Olivain <juju@cotds.org>
2020-05-11 08:58:30 +02:00
Tudor Brindus 064f64dbf7 input/keyboard: expose keymap matching helper
sway needs this logic too, and currently ships a version that has fallen
behind in terms of bugfixes (b1a63bc).
2020-05-07 23:10:03 -04:00
Tudor Brindus 16af1972d6 wlr/types: use bitshifts for tablet axes enum 2020-05-04 21:52:33 +02:00
David96 e3343cf7d1 Add wlr_surface_accepts_touch 2020-05-02 18:25:47 +02:00
Simon Ser 06f4c3945d render/texture: add width and height fields
Instead of requiring compositors to call wlr_texture_get_size each time
they want to access the texture's size, expose this information as
wlr_texture fields.
2020-04-28 21:45:14 +02:00
Simon Ser 6129a6f93e backend/headless: add wlr_headless_backend_create_with_renderer
This allows one to create a headless backend with an existing renderer.
2020-04-22 22:40:54 +02:00
Simon Ser 5dc3a9c754 render/gles2: add wlr_gles2_renderer_check_ext 2020-04-22 22:40:54 +02:00
Simon Ser 455a9bd0ef output_layout: improve docs 2020-04-22 22:14:29 +02:00
Isaac Freund 85e299e6c5 Document the events of wlr_layer_surface 2020-04-17 15:44:07 +02:00
Tudor Roman ffcf25cc25
seat: add selection event docs 2020-04-15 17:04:40 +02:00
Simon Ser 5f092c55d1 output: fix blurred hw cursors with fractional scaling
The scaling factor was being implicitly cast to an int.

Closes: https://github.com/swaywm/sway/issues/4927
2020-04-10 15:10:12 +02:00
Simon Ser 6787ff521b render/egl: make config attribs const
wlr_egl_init is not allowed to mutate these attribs.
2020-04-09 00:15:25 +00:00
Simon Ser 507d9bc19e Add wlr_output_impl.rollback
Most of the pending output state is not forwarded to the backend prior
to an output commit. For instance, wlr_output_set_mode just stashes the
mode without calling any wlr_output_impl function.
wlr_output_impl.commit is responsible for applying the pending mode.

However, there are exceptions to this rule. The first one is
wlr_output_attach_render. It won't go away before renderer v6 is
complete, because it needs to set the current EGL surface.

The second one is wlr_output_attach_buffer.
wlr_output_impl.attach_buffer is removed in [1].

When wlr_output_rollback is called, all pending state is supposed to be
cleared. This works for all the state except the two exceptions
mentionned above. To fix this, introduce wlr_output_impl.rollback.

Right now, the backend resets the current EGL surface. This prevents GL
commands from affecting the output after wlr_output_rollback.

This patch is required for FBO-based outputs to work properly. The
compositor might be using FBOs for its own purposes [2], having leftover
FBO state can have bad consequences.

[1]: https://github.com/swaywm/wlroots/pull/2097
[2]: https://github.com/swaywm/wlroots/pull/2063#issuecomment-597614312
2020-04-08 17:33:00 +02:00