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render: add a 'clean' bit to each cell; only render cells that aren't clean

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This patch takes a bit from the foreground color value in a
cell (todo: split up foreground/background into bitfields with a
separate field for 'foreground/background' has been set), and only
re-renders cells that aren't marked as clean.

Note: we use a 'clean' bit rather than a 'dirty' bit to make it easy
to erase cells - we can (keep doing) do that by simply memsetting a
cell range to 0.
This commit is contained in:
Daniel Eklöf 2019-07-30 18:03:03 +02:00
parent c531795b83
commit 85ef9df586
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GPG key ID: 5BBD4992C116573F
7 changed files with 52 additions and 33 deletions
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10
vt.c
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@ -698,7 +698,6 @@ pre_print(struct terminal *term)
static inline void
post_print(struct terminal *term)
{
term->grid->cur_row->dirty = true;
if (term->cursor.col < term->cols - 1)
term_cursor_right(term, 1);
else
@ -716,13 +715,6 @@ print_insert(struct terminal *term)
&row[term->cursor.col + 1],
&row[term->cursor.col],
term->cols - term->cursor.col - 1);
#if 0
term_damage_update(
term, term->cursor.linear + 1, term->cols - term->cursor.col - 1);
#else
row->dirty = true;
#endif
}
}
@ -737,6 +729,7 @@ action_print_utf8(struct terminal *term)
term_damage_update(term, term->cursor.linear, 1);
#else
row->dirty = true;
cell->attrs.clean = 0;
#endif
print_insert(term);
@ -761,6 +754,7 @@ action_print(struct terminal *term, uint8_t c)
term_damage_update(term, term->cursor.linear, 1);
#else
row->dirty = true;
cell->attrs.clean = 0;
#endif
print_insert(term);