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surface: introduce wlr_surface_get_buffer_source_box

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This helper allows compositors to retrieve the buffer source box in
buffer-local coordinates.
This commit is contained in:
Simon Ser 2020-06-08 17:35:21 +02:00 • committed by Drew DeVault
parent eb22ae97b0
commit c618a76540
2 changed files with 34 additions and 0 deletions
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11
include/wlr/types/wlr_surface.h
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@ -262,4 +262,15 @@ void wlr_surface_for_each_surface(struct wlr_surface *surface,
void wlr_surface_get_effective_damage(struct wlr_surface *surface,
pixman_region32_t *damage);
/**
* Get the source rectangle describing the region of the buffer that needs to
* be sampled to render this surface's current state. The box is in
* buffer-local coordinates.
*
* If the viewport's source rectangle is unset, the position is zero and the
* size is the buffer's.
*/
void wlr_surface_get_buffer_source_box(struct wlr_surface *surface,
struct wlr_fbox *box);
#endif