Commit Graph

1240 Commits

Author SHA1 Message Date
Simon Ser 66c42f4fcb backend/drm: add DRM_MODE_CONNECTOR_USB to conn_get_name
See 757e26712337 ("drm/uapi: Add USB connector type") in the kernel
tree.
2021-07-21 08:47:35 +02:00
Simon Ser cc8bc0db20 backend/drm: stop restoring CRTCs on exit
This is the cause of the spurious "drmHandleEvent failed" messages
at exit. restore_drm_outputs calls handle_drm_event in a loop without
checking whether the FD is readable, so drmHandleEvent ends up with a
short read (0 bytes) and returns an error.

The loop's goal is to wait for all queued page-flip events to complete,
to allow drmModeSetCrtc calls to succeed without EBUSY. The
drmModeSetCrtc calls are supposed to restore whatever KMS state we were
started with. But it's not clear from my PoV that restoring the KMS
state on exit is desirable.

KMS clients are supposed to save and restore the (full) KMS state on VT
switch, but not on exit. Leaving our KMS state on exit avoids unnecessary
modesets and allows flicker-free transitions between clients. See [1]
for more details, and note that with Pekka we've concluded that a new
flag to reset some KMS props to their default value on compositor
start-up is the best way forward. As a side note, Weston doesn't restore
the CRTC by does disable the cursor plane on exit (see
drm_output_deinit_planes, I still think disabling the cursor plane
shouldn't be necessary on exit).

Additionally, restore_drm_outputs only a subset of the KMS state.
Gamma and other atomic properties aren't accounted for. If the previous
KMS client had some outputs disabled, restore_drm_outputs would restore
a garbage mode.

[1]: https://blog.ffwll.ch/2016/01/vt-switching-with-atomic-modeset.html
2021-07-20 15:33:26 +02:00
Simon Ser f94eb174c7 backend/drm: fix NULL data in handle_drm_event
wl_event_loop_add_fd was called with a NULL data argument, but the
function expects the data argument to be set to the wlr_drm_backend.

Fixes: 053ebe7c27 ("backend/drm: terminate display on drmHandleEvent failure")
2021-07-19 09:01:21 -04:00
Simon Ser a47f89cf7c backend/wayland: properly cleanup wlr_wl_pointer
We were missing destroy calls for gestures, and we were only
destroying the relative pointer on output destroy.
2021-07-13 09:20:25 -04:00
Simon Ser 709190c4c8 backend/drm: remove wlr_output_impl.export_dmabuf
This is now provided by the generic wlr_output implementation.
2021-07-12 13:29:03 -04:00
Simon Ser aec062d0d3 backend/headless: remove wlr_output_impl.export_dmabuf
This is now provided by the generic wlr_output implementation.
2021-07-12 13:29:03 -04:00
Simon Ser f67cfb2ce2 backend/drm: remove backend arg from wlr_drm_interface.crtc_commit
The callee can just get it from the wlr_drm_connector.
2021-07-09 15:31:19 -04:00
Simon Ser fde56c20b4 backend/drm: move legacy-specific checks to legacy.c
Now that we have a test_only arg in crtc_commit, we can move the
legacy checks to legacy.c.
2021-07-09 15:31:19 -04:00
Simon Ser 017555651b backend/drm: add test_only arg to wlr_drm_interface.crtc_commit
Right now callers of drm_crtc_commit need to check whether the
interface is legacy or atomic before passing the TEST_ONLY flag.
Additionally, the fallbacks for legacy are in-place in the common
code.

Add a test_only arg to the crtc_commit hook. This way, there's no
risk to pass atomic-only flags to the legacy function (add an assert
to ensure this) and all of the legacy-specific logic can be put back
into legacy.c (done in next commit).
2021-07-09 15:31:19 -04:00
Simon Ser c1b27cc499 backend/drm: stop using drm_surface_make_current in drm_surface_blit
drm_surface_make_current and drm_surface_unset_current set implicit
state and are an unnecessary mid-layer. Prefer to use directly
wlr_renderer_begin_with_buffer, which automatically unsets the back
buffer on wlr_renderer_end.

I'd like to get rid of drm_surface_make_current once we stop using
it for the primary swapchain.
2021-07-08 14:44:42 -04:00
Simon Ser d71ed635b9 backend/drm: force linear layout for multi-GPU buffers
Some buffers need to be copied across GPUs. Such buffers need to be
allocated with a format and modifier suitable for both the source
and the destination.

When explicit modifiers aren't supported, we were forcing the buffers
to be allocated with a linear layout, because implicit modifiers
aren't portable across GPUs. All is well with this case.

When explicit modifiers are supported, we were advertising the whole
list of destination modifiers, in the hope that the source might
have some in common and might be able to allocate a buffer with a
more optimized layout. This works well if the source supports explicit
modifiers. However, if the source doesn't, then wlr_drm_format_intersect
will fallback to implicit modifiers, and everything goes boom: the
source uses a GPU-specific tiling and the destination interprets it
as linear.

To avoid this, just force linear unconditionally. We'll be able to
revert this once we have a good way to indicate that an implicit modifier
isn't supported in wlr_drm_format_set, see [1].

[1]: https://github.com/swaywm/wlroots/pull/2815

Closes: https://github.com/swaywm/wlroots/issues/3030
2021-07-08 17:06:20 +02:00
Simon Ser e035f2b9c4 Fix invalid uses of wl_array_for_each
[1] and [2] have introduced new wl_array usage in wlroots, but
contains a mistake: wl_array_for_each iterates over pointers to
the wl_array entries, not over entries themselves.

Fix all wl_array_for_each call sites. Name the variables "ptr"
to avoid confusion.

Found via ASan:

    ==148752==ERROR: AddressSanitizer: attempting free on address which was not malloc()-ed: 0x602000214111 in thread T0
        #0 0x7f6ff2235f19 in __interceptor_free /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cpp:127
        #1 0x7f6ff1c04004 in wlr_tablet_destroy ../subprojects/wlroots/types/wlr_tablet_tool.c:24
        #2 0x7f6ff1b8463c in wlr_input_device_destroy ../subprojects/wlroots/types/wlr_input_device.c:51
        #3 0x7f6ff1ab9941 in backend_destroy ../subprojects/wlroots/backend/wayland/backend.c:306
        #4 0x7f6ff1a68323 in wlr_backend_destroy ../subprojects/wlroots/backend/backend.c:57
        #5 0x7f6ff1ab36b4 in multi_backend_destroy ../subprojects/wlroots/backend/multi/backend.c:57
        #6 0x7f6ff1ab417c in handle_display_destroy ../subprojects/wlroots/backend/multi/backend.c:124
        #7 0x7f6ff106184e in wl_display_destroy (/usr/lib/libwayland-server.so.0+0x884e)
        #8 0x55cd1a77c9e5 in server_fini ../sway/server.c:218
        #9 0x55cd1a77893f in main ../sway/main.c:400
        #10 0x7f6ff04bdb24 in __libc_start_main (/usr/lib/libc.so.6+0x27b24)
        #11 0x55cd1a73a7ad in _start (/home/simon/src/sway/build/sway/sway+0x33a7ad)

    0x602000214111 is located 1 bytes inside of 16-byte region [0x602000214110,0x602000214120)
    freed by thread T0 here:
        #0 0x7f6ff2235f19 in __interceptor_free /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cpp:127
        #1 0x7f6ff1c04004 in wlr_tablet_destroy ../subprojects/wlroots/types/wlr_tablet_tool.c:24
        #2 0x7f6ff1b8463c in wlr_input_device_destroy ../subprojects/wlroots/types/wlr_input_device.c:51
        #3 0x7f6ff1ab9941 in backend_destroy ../subprojects/wlroots/backend/wayland/backend.c:306
        #4 0x7f6ff1a68323 in wlr_backend_destroy ../subprojects/wlroots/backend/backend.c:57
        #5 0x7f6ff1ab36b4 in multi_backend_destroy ../subprojects/wlroots/backend/multi/backend.c:57
        #6 0x7f6ff1ab417c in handle_display_destroy ../subprojects/wlroots/backend/multi/backend.c:124
        #7 0x7f6ff106184e in wl_display_destroy (/usr/lib/libwayland-server.so.0+0x884e)

    previously allocated by thread T0 here:
        #0 0x7f6ff2236279 in __interceptor_malloc /build/gcc/src/gcc/libsanitizer/asan/asan_malloc_linux.cpp:145
        #1 0x7f6ff1066d03 in wl_array_add (/usr/lib/libwayland-server.so.0+0xdd03)

[1]: https://github.com/swaywm/wlroots/pull/3002
[2]: https://github.com/swaywm/wlroots/pull/3004
2021-07-08 10:08:47 -04:00
Simon Ser c1902cdb3f backend/x11: send touch frame events 2021-07-08 09:12:17 +02:00
Simon Ser 8eef6a8843 backend/wayland: send touch frame events 2021-07-08 09:12:17 +02:00
Simon Ser 2d36d7fb67 backend/libinput: send touch frame events 2021-07-08 09:12:17 +02:00
Simon Zeni e192d87731 move wlr_box from /types to /util 2021-07-06 21:43:17 +02:00
Simon Ser 4dee7a2f6f backend/drm: don't clear pending cursor FB on failed commit
The previous fix tried to side-step cursor->pending_fb completely.
However that messes up our buffer locking mechanism.

Instead, stop clearing the pending cursor FB on a failed commit. The
pending cursor FB will remain for the next commit.

Fixes: 6c3d080e25 ("backend/drm: populate cursor plane's current_fb")
2021-07-05 10:55:41 -04:00
Simon Ser 5f26360bd8 Revert "backend/drm: populate cursor plane's current_fb"
This reverts commit 6c3d080e25.

Populating wlr_drm_plane.current_fb messes up the buffer's locking.
The previous buffer is released while it's still being displayed
on-screen.
2021-07-05 10:55:41 -04:00
Simon Ser 0a522cb798 backend/libinput: use wl_array for wlr_libinput_tablet.tools
Instead of using a single-field wl_list, let's just use a wl_array.
2021-07-05 10:05:06 +02:00
Simon Ser a38baec1f8 buffer: make enum wlr_buffer_cap public
Custom backends and renderers need to implement
wlr_backend_impl.get_buffer_caps and
wlr_renderer_impl.get_render_buffer_caps. They can't if enum
wlr_buffer_cap isn't made public.
2021-07-01 16:40:19 -04:00
Simon Ser 5888c96da8 tablet: stop using wlr_list 2021-07-01 10:35:39 -04:00
Simon Ser e6cb11d882 backend/libinput: stop using wlr_list internally 2021-07-01 10:35:39 -04:00
Simon Ser dbb0e2f75b Remove unused wlr_list.h includes 2021-07-01 10:35:39 -04:00
Simon Ser 264d4e2bce backend/drm: rename page_flip_handler to handle_page_flip
This is more consistent with the rest of the wlroots naming.
2021-06-24 11:56:45 +02:00
Simon Ser 2f615468b6 backend: add output state allow-lists
Right now, when a new output state field is added, all backends by
default won't reject it. This means we need to add new checks to
each and every backend when we introduce a new state field.

Instead, introduce a bitmask of supported output state fields in
each backend, and error out if the user has submitted an unknown
field.

Some fields don't need any backend involvment to work. These are
listed in WLR_OUTPUT_STATE_BACKEND_OPTIONAL as a convenience.
2021-06-20 23:17:08 +02:00
Simon Ser 72ee196efa backend/session: use DRM_PRIMARY_MINOR_NAME
Instead of hardcoding the string "card", use DRM_PRIMARY_MINOR_NAME.
Some systems may use another prefix, e.g. OpenBSD uses "drm" instead.
2021-06-17 00:28:04 +02:00
Simon Ser fb933d3204 backend/session: use drmIsKMS
This moves the magic incantation into libdrm and is clearer. See
[1] for details.

While at it, fixup the doc comment and improve logging.

[1]: 523b3658aa
2021-06-17 00:27:12 +02:00
Simon Ser 6c3d080e25 backend/drm: populate cursor plane's current_fb
The set_cursor() hook is a little bit special: it's not really
synchronized to commit() or test(). Once set_cursor() returns true,
the new cursor is part of the current state.

This fixes a state where wlr_drm_connector.cursor_enabled is true
but there is no FB available. This is triggered by set_cursor()
followed by a failed commit(), which resets pending_fb.

We should definitely fix the output interface to make the cursor part
of the pending state, but that's a more involved change.
2021-06-17 00:25:27 +02:00
Simon Ser 3345eaca89 backend/drm: remove test_buffer
Instead, call drm_connector_set_pending_fb.
2021-06-13 10:57:17 +02:00
Simon Ser eca5d2f37f backend/drm: move session check from test_buffer to drm_connector_test
The other caller (drm_connector_commit_state) already checks this.
2021-06-13 10:57:17 +02:00
Simon Ser 758f117442 backend/drm: move drm_connector_set_pending_fb up
This will be used in drm_connector_test shortly.
2021-06-13 10:57:17 +02:00
Simon Ser f55b43ddd6 backend/drm: allocate a CRTC in drm_connector_test
We can't perform a test-only atomic commit if the connector is
missing a CRTC.
2021-06-13 10:57:17 +02:00
Simon Ser cb378600e4 backend/drm: allocate a CRTC in drm_connector_commit_state
drm_connector_set_pending_fb needs a CRTC to import the buffer.
2021-06-13 10:57:17 +02:00
Simon Ser b180d3482f backend/drm: introduce drm_connector_alloc_crtc
This function allocates a CRTC for a connector if necessary.
2021-06-13 10:57:17 +02:00
Simon Ser 63f891e393 backend/drm: allow committing a buffer and a mode together
Set the plane's pending FB before calling drm_connector_set_mode.
2021-06-13 10:57:17 +02:00
Simon Ser e89cf5f047 backend/drm: use atomic test-only commits for modifier fallback
Instead of trying to perform a real modeset in init_renderer,
perform an atomic test-only commit to find out whether disabling
modifiers is necessary because of bandwidth limitations.

This decouples init_renderer from the actual commit, making it
possible to modeset an output with a user-supplied buffer instead
of a black frame.

We loose the ability to make sure the buffers coming from the
swapchain will work fine when using the legacy interface. This
can break i915 when atomic is disabled and modifiers enabled.
But i915 always has atomic (so the user must explicitly disable it
to run into potential bandwidth limitations) and is the only known
problematic driver.
2021-06-13 10:57:17 +02:00
Simon Ser b2f6db3533 render: drop wlr_ prefix from wlr_renderer_bind_buffer
Make it clear this function is a private wlroots API and will stay
that way.
2021-06-09 10:26:09 +02:00
Simon Ser c87c849ec6 backend/x11: use wlr_renderer_begin_with_buffer for cursor 2021-06-09 10:26:09 +02:00
Simon Ser 543f5b35d0 backend/wayland: remove swapchain
Rely on wlr_output's generic swapchain handling.
2021-06-07 15:42:38 +02:00
Simon Ser 5f8092b045 backend/wayland: implement get_dmabuf_primary_formats 2021-06-07 15:42:38 +02:00
Simon Ser a670ee7940 backend/x11: remove swapchain
Rely on wlr_output's generic swapchain handling.

We still need a renderer for cursor readback, sadly.
2021-06-07 15:42:38 +02:00
Simon Ser 68c4f15958 backend/x11: implement get_dmabuf_primary_formats 2021-06-07 15:42:38 +02:00
Simon Ser 44feb832f9 backend/headless: remove swapchain
Rely on wlr_output's generic swapchain support instead of creating our
own. The headless output now simply keeps a reference to the front buffer
and does nothing else.
2021-06-07 15:42:38 +02:00
Simon Ser b86a0c8d8f backend/drm: move cursor fields to wlr_drm_connector
Doesn't make a lot of sense to split the cursor fields between
wlr_drm_plane and wlr_drm_connector. Let's just move everything to
wlr_drm_connector.
2021-06-02 11:08:52 +02:00
Simon Ser 2b0a1aeed5 output: take a wlr_buffer in set_cursor
Instead of passing a wlr_texture to the backend, directly pass a
wlr_buffer. Use get_cursor_size and get_cursor_formats to create
a wlr_buffer that can be used as a cursor.

We don't want to pass a wlr_texture because we want to remove as
many rendering bits from the backend as possible.
2021-06-02 11:08:52 +02:00
Simon Ser 01e0f51fad backend/drm: introduce drm_plane_pick_render_format
This is a new helper function to pick a render format suitable for
a plane.

The next commit will use it to initialize the cursor multi-GPU
surface.
2021-06-02 11:08:52 +02:00
Simon Ser e06ea4e84a backend/drm: remove format arg from drm_plane_init_surface
This was always set to ARGB8888.
2021-06-02 11:08:52 +02:00
Simon Ser 9e9be83a58 backend/drm: implement get_cursor_formats and get_cursor_size 2021-06-02 11:08:52 +02:00
Simon Ser de51df2770 backend/wayland: implement get_cursor_formats 2021-06-02 11:08:52 +02:00
Simon Ser ce3e819b33 backend: stop using renderer to get the buffer type
When picking a format, the backend needs to know whether the
buffers allocated by the allocator will be DMA-BUFs or shared
memory. So far, the backend used the renderer's supported
buffer types to guess this information.

This is pretty fragile: renderers in general don't care about the
SHM cap (they only care about the DATA_PTR one). Additionally,
nothing stops a renderer from supporting both DMA-BUFs and shared
memory, but this would break the backend's guess.

Instead, use wlr_allocator.buffer_caps. This is more reliable since
the buffers created with the allocator are guaranteed to have these
caps.
2021-05-31 15:50:13 -04:00