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mono-scan-convertor: Include space for the closing span

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When estimating the maximum number of spans required for a particular
width, we need to include a closing span.

Reviewed-by: Zhigang Gong <zhigang.gong@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Seongwon Cho 2012-02-29 18:59:34 +09:00 • committed by Chris Wilson
parent 2587b9dfd3
commit 300e32a4a9
1 changed files with 4 additions and 2 deletions
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6
src/cairo-mono-scan-converter.c
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@ -390,13 +390,15 @@ _mono_scan_converter_init(struct mono_scan_converter *c,
int xmax, int ymax)
{
cairo_status_t status;
int max_num_spans;
status = polygon_init (c->polygon, ymin, ymax);
if (unlikely (status))
return status;
if (xmax - xmin > ARRAY_LENGTH(c->spans_embedded)) {
c->spans = _cairo_malloc_ab (xmax - xmin,
max_num_spans = xmax - xmin + 1;
if (max_num_spans > ARRAY_LENGTH(c->spans_embedded)) {
c->spans = _cairo_malloc_ab (max_num_spans,
sizeof (cairo_half_open_span_t));
if (unlikely (c->spans == NULL)) {
polygon_fini (c->polygon);