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render: code cleanup, log double buffering time

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* Break out cursor cell dirtying to separate functions
* Break out handling of double buffering
* Handle buffers with age > 1 (we’re swapping between more than 2
  buffers)
* Detect full screen repaints, and skip re-applying old frame’s damage
* Use an allocated array insted of a tll list for old frame’s scroll damage
* When logging frame rendering time, including the amount used for
  double buffering.
This commit is contained in:
Daniel Eklöf 2021-05-08 10:25:14 +02:00
parent a1d2044d75
commit 34becf0df0
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GPG key ID: 5BBD4992C116573F
3 changed files with 195 additions and 188 deletions
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shm.c
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@ -103,7 +103,7 @@ buffer_destroy(struct buffer *buf)
buf->pool = NULL;
buf->fd = -1;
tll_free(buf->scroll_damage);
free(buf->scroll_damage);
pixman_region32_fini(&buf->dirty);
}