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cell: pack more efficiently and store glyph as a wchar

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The 'attributes' struct is now 8 bytes and naturally packed (used to
be 9 bytes, artificially packed).

'cell' struct is now 12 bytes, naturally packed (used to be 13 bytes,
artificially packed).

Furthermore, the glyph is stored as a wchar instead of a char*. This
makes it easier (faster) to do glyph lookup when rendering.
This commit is contained in:
Daniel Eklöf 2019-08-02 18:19:07 +02:00
parent ab92abbd21
commit 4d7993b36f
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GPG key ID: 5BBD4992C116573F
9 changed files with 146 additions and 129 deletions
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7
terminal.c
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@ -163,11 +163,12 @@ erase_cell_range(struct terminal *term, struct row *row, int start, int end)
assert(start < term->cols);
assert(end < term->cols);
if (unlikely(term->vt.attrs.background >> 30)) {
if (unlikely(term->vt.attrs.have_bg)) {
for (int col = start; col <= end; col++) {
row->cells[col].c[0] = '\0';
row->cells[col].wc = 0;
row->cells[col].attrs.clean = 0;
row->cells[col].attrs.background = term->vt.attrs.background;
row->cells[col].attrs.have_bg = 1;
row->cells[col].attrs.bg = term->vt.attrs.bg;
}
} else {
memset(&row->cells[start], 0, (end - start + 1) * sizeof(row->cells[0]));