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[cairo-surface] Use a stack buffer for small numbers of rectangles

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Chris Wilson 2007-03-14 01:31:58 +00:00 • committed by Behdad Esfahbod
parent 9b53bc7c65
commit 1de12714a9
1 changed files with 9 additions and 4 deletions
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13
src/cairo-surface.c
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@ -1170,6 +1170,7 @@ _cairo_surface_fill_region (cairo_surface_t *surface,
{
int num_rects = pixman_region_num_rects (region);
pixman_box16_t *boxes = pixman_region_rects (region);
cairo_rectangle_int16_t stack_rects[CAIRO_STACK_BUFFER_SIZE / sizeof (cairo_rectangle_int16_t)];
cairo_rectangle_int16_t *rects;
cairo_status_t status;
int i;
@ -1179,9 +1180,12 @@ _cairo_surface_fill_region (cairo_surface_t *surface,
if (!num_rects)
return CAIRO_STATUS_SUCCESS;
rects = malloc (sizeof (pixman_rectangle_t) * num_rects);
if (!rects)
return CAIRO_STATUS_NO_MEMORY;
rects = stack_rects;
if (num_rects > (int) (sizeof (stack_rects) / sizeof (stack_rects[0]))) {
rects = malloc (sizeof (cairo_rectangle_int16_t) * num_rects);
if (!rects)
return CAIRO_STATUS_NO_MEMORY;
}
for (i = 0; i < num_rects; i++) {
rects[i].x = boxes[i].x1;
@ -1193,7 +1197,8 @@ _cairo_surface_fill_region (cairo_surface_t *surface,
status = _cairo_surface_fill_rectangles (surface, op,
color, rects, num_rects);
free (rects);
if (rects != stack_rects)
free (rects);
return status;
}