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output: add wlr_output_state_init()

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This changes the semantics of wlr_output_state. Instead of having
fields with uninitialized memory when missing from the committed
bitflag, all fields are always initialized (and maybe NULL/empty),
just like we do in wlr_surface_state. This reduces the chances of
footguns when reading a field, and removes the need to check for
the committed bitfield everywhere.

A new wlr_output_state_init() function takes care of initializing
the Pixman region.
This commit is contained in:
Simon Ser 2023-06-22 15:48:35 +02:00 • committed by Alexander Orzechowski
parent 8a5b5e6f28
commit be05097968
19 changed files with 103 additions and 103 deletions
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25
types/scene/wlr_scene.c
View file

@ -1534,7 +1534,8 @@ static bool scene_buffer_can_consider_direct_scanout(struct wlr_scene_buffer *bu
static bool scene_buffer_try_direct_scanout(struct wlr_scene_buffer *buffer,
struct wlr_scene_output *scene_output, struct wlr_output_state *state) {
struct wlr_output_state pending = {0};
struct wlr_output_state pending;
wlr_output_state_init(&pending);
if (!wlr_output_state_copy(&pending, state)) {
return false;
}
@ -1564,19 +1565,23 @@ bool wlr_scene_output_commit(struct wlr_scene_output *scene_output) {
return true;
}
struct wlr_output_state state = {0};
bool ok = false;
struct wlr_output_state state;
wlr_output_state_init(&state);
if (!wlr_scene_output_build_state(scene_output, &state)) {
return false;
goto out;
}
bool success = wlr_output_commit_state(scene_output->output, &state);
ok = wlr_output_commit_state(scene_output->output, &state);
if (!ok) {
goto out;
}
wlr_damage_ring_rotate(&scene_output->damage_ring);
out:
wlr_output_state_finish(&state);
if (success) {
wlr_damage_ring_rotate(&scene_output->damage_ring);
}
return success;
return ok;
}
bool wlr_scene_output_build_state(struct wlr_scene_output *scene_output,