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wayland/surface: Move buffer size check to meta_wayland_surface_commit

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Multiple reasons:

* More consistent with the protocol spec language.
* Ensures the size is checked and the protocol error sent from a
  protocol processing context, instead of whatever context
  meta_wayland_surface_commit might get called from.
* The latter implies that surface->resource is guaranteed to be valid.

Closes: https://gitlab.gnome.org/GNOME/mutter/-/issues/3211
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3463>
This commit is contained in:
Michel Dänzer 2023-12-18 17:42:16 +01:00 committed by Marge Bot
parent 0a0d1e2066
commit 7649e2f3ab
1 changed files with 34 additions and 32 deletions
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66
src/wayland/meta-wayland-surface.c
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@ -698,7 +698,6 @@ meta_wayland_surface_apply_state (MetaWaylandSurface *surface,
{
gboolean had_damage = FALSE;
int old_width, old_height;
int surface_scale;
old_width = meta_wayland_surface_get_width (surface);
old_height = meta_wayland_surface_get_height (surface);
@ -746,36 +745,6 @@ meta_wayland_surface_apply_state (MetaWaylandSurface *surface,
if (state->scale > 0)
surface->applied_state.scale = state->scale;
surface_scale = surface->applied_state.scale;
if ((meta_wayland_surface_get_buffer_width (surface) % surface_scale != 0) ||
(meta_wayland_surface_get_buffer_height (surface) % surface_scale != 0))
{
if (surface->role && !META_IS_WAYLAND_CURSOR_SURFACE (surface->role))
{
wl_resource_post_error (surface->resource, WL_SURFACE_ERROR_INVALID_SIZE,
"Buffer size (%dx%d) must be an integer multiple "
"of the buffer_scale (%d).",
meta_wayland_surface_get_buffer_width (surface),
meta_wayland_surface_get_buffer_height (surface),
surface_scale);
}
else
{
struct wl_resource *resource = surface->resource;
pid_t pid;
wl_client_get_credentials (wl_resource_get_client (resource), &pid, NULL,
NULL);
g_warning ("Bug in client with pid %ld: Cursor buffer size (%dx%d) is "
"not an integer multiple of the buffer_scale (%d).",
(long) pid,
meta_wayland_surface_get_buffer_width (surface),
meta_wayland_surface_get_buffer_height (surface),
surface_scale);
}
}
if (state->has_new_buffer_transform)
surface->buffer_transform = state->buffer_transform;
@ -926,6 +895,8 @@ meta_wayland_surface_commit (MetaWaylandSurface *surface)
if (buffer)
{
int committed_scale = surface->committed_state.scale;
MetaMultiTexture *committed_texture;
g_autoptr (GError) error = NULL;
g_clear_signal_handler (&pending->buffer_destroy_handler_id,
@ -947,7 +918,38 @@ meta_wayland_surface_commit (MetaWaylandSurface *surface)
return;
}
pending->texture = g_object_ref (surface->committed_state.texture);
committed_texture = surface->committed_state.texture;
if ((meta_multi_texture_get_width (committed_texture) % committed_scale != 0) ||
(meta_multi_texture_get_height (committed_texture) % committed_scale != 0))
{
if (surface->role && !META_IS_WAYLAND_CURSOR_SURFACE (surface->role))
{
wl_resource_post_error (surface->resource, WL_SURFACE_ERROR_INVALID_SIZE,
"Buffer size (%dx%d) must be an integer multiple "
"of the buffer_scale (%d).",
meta_wayland_surface_get_buffer_width (surface),
meta_wayland_surface_get_buffer_height (surface),
committed_scale);
return;
}
else
{
struct wl_resource *resource = surface->resource;
pid_t pid;
wl_client_get_credentials (wl_resource_get_client (resource), &pid, NULL,
NULL);
g_warning ("Bug in client with pid %ld: Cursor buffer size (%dx%d) is "
"not an integer multiple of the buffer_scale (%d).",
(long) pid,
meta_wayland_surface_get_buffer_width (surface),
meta_wayland_surface_get_buffer_height (surface),
committed_scale);
}
}
pending->texture = g_object_ref (committed_texture);
g_object_ref (buffer);
meta_wayland_buffer_inc_use_count (buffer);