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surface: add WLR_SURFACE_STATE_SUBSURFACES

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This allows to figure out when the subsurface list has changed:
subsurface added or re-ordered. In the case where the subsurface
list hasn't changed, some book-keeping operations can be skipped.
This commit is contained in:
Simon Ser 2023-12-04 15:39:08 +01:00
parent ab924064f2
commit baf35a89f1
2 changed files with 4 additions and 0 deletions
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include/wlr/types/wlr_compositor.h
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@ -29,6 +29,7 @@ enum wlr_surface_state_field {
WLR_SURFACE_STATE_FRAME_CALLBACK_LIST = 1 << 7,
WLR_SURFACE_STATE_VIEWPORT = 1 << 8,
WLR_SURFACE_STATE_OFFSET = 1 << 9,
WLR_SURFACE_STATE_SUBSURFACES = 1 << 10, // sub-surface added or re-ordered
};
struct wlr_surface_state {