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sixel: add_ar_11(): manually unroll loop

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This generates both smaller, and faster code
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Daniel Eklöf 2023-06-27 16:21:26 +02:00
parent fc46087ce9
commit 5e9d68695c
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GPG key ID: 5BBD4992C116573F
1 changed files with 18 additions and 7 deletions
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25
sixel.c
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@ -1360,15 +1360,26 @@ sixel_add_ar_11(struct terminal *term, int col, int width, uint32_t color,
xassert(term->sixel.pos.row < term->sixel.image.height);
xassert(term->sixel.pan == 1);
size_t ofs = term->sixel.row_byte_ofs + col;
const size_t ofs = term->sixel.row_byte_ofs + col;
uint32_t *data = &term->sixel.image.data[ofs];
for (int i = 0; i < 6; i++, sixel >>= 1, data += width) {
if (sixel & 1)
*data = color;
}
xassert(sixel == 0);
if (sixel & 0x01)
*data = color;
data += width;
if (sixel & 0x02)
*data = color;
data += width;
if (sixel & 0x04)
*data = color;
data += width;
if (sixel & 0x08)
*data = color;
data += width;
if (sixel & 0x10)
*data = color;
data += width;
if (sixel & 0x20)
*data = color;
}
static void