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shm: scroll: move top/bottom region handling from renderer into shm

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This allows us to restore the regions without copying the contents to
temporary memory.
This commit is contained in:
Daniel Eklöf 2020-03-23 20:45:27 +01:00
parent 00129b1935
commit 0de3701984
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3 changed files with 57 additions and 59 deletions
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4
shm.h
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@ -33,7 +33,9 @@ struct buffer *shm_get_buffer(
void shm_fini(void);
bool shm_can_scroll(void);
bool shm_scroll(struct wl_shm *shm, struct buffer *buf, int rows);
bool shm_scroll(struct wl_shm *shm, struct buffer *buf, int rows,
int top_margin, int top_keep_rows,
int bottom_margin, int bottom_keep_rows);
void shm_purge(struct wl_shm *shm, unsigned long cookie);