fdo-mirrors/cairo
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/cairo/cairo.git synced 2026-05-05 00:38:06 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

spans-compositor: Handle unaligned unbounded boxes

Browse source 
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-05-11 20:25:29 +01:00
parent 2d26f7da77
commit 197e5b7324
1 changed files with 51 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

67
src/cairo-spans-compositor.c
View file

@ -111,11 +111,31 @@ get_clip_surface (const cairo_spans_compositor_t *compositor,
if (unlikely (status))
goto cleanup_polygon;
antialias = clip_path->antialias;
fill_rule = clip_path->fill_rule;
if (clip->boxes) {
cairo_polygon_t intersect;
cairo_boxes_t tmp;
_cairo_boxes_init_for_array (&tmp, clip->boxes, clip->num_boxes);
status= _cairo_polygon_init_boxes (&intersect, &tmp);
if (unlikely (status))
goto cleanup_polygon;
status = _cairo_polygon_intersect (&polygon, fill_rule,
&intersect, CAIRO_FILL_RULE_WINDING);
_cairo_polygon_fini (&intersect);
if (unlikely (status))
goto cleanup_polygon;
fill_rule = CAIRO_FILL_RULE_WINDING;
}
polygon.limits = NULL;
polygon.num_limits = 0;
antialias = clip_path->antialias;
fill_rule = clip_path->fill_rule;
clip_path = clip_path->prev;
while (clip_path) {
if (clip_path->antialias == antialias) {
@ -353,26 +373,41 @@ fixup_unbounded_boxes (const cairo_spans_compositor_t *compositor,
assert (status == CAIRO_INT_STATUS_SUCCESS);
}
/* Now intersect with the clip boxes */
if (extents->clip->num_boxes) {
_cairo_boxes_init_for_array (&tmp,
extents->clip->boxes,
extents->clip->num_boxes);
status = _cairo_boxes_intersect (&clear, &tmp, &clear);
if (unlikely (status))
goto error;
}
/* If we have a clip polygon, we need to intersect with that as well */
if (extents->clip->path) {
status = fixup_unbounded_polygon (compositor, extents, &clear);
if (status == CAIRO_INT_STATUS_UNSUPPORTED)
status = fixup_unbounded_mask (compositor, extents, &clear);
} else {
status = compositor->fill_boxes (extents->surface,
CAIRO_OPERATOR_CLEAR,
CAIRO_COLOR_TRANSPARENT,
&clear);
/* Otherwise just intersect with the clip boxes */
if (extents->clip->num_boxes) {
_cairo_boxes_init_for_array (&tmp,
extents->clip->boxes,
extents->clip->num_boxes);
status = _cairo_boxes_intersect (&clear, &tmp, &clear);
if (unlikely (status))
goto error;
}
if (clear.is_pixel_aligned) {
status = compositor->fill_boxes (extents->surface,
CAIRO_OPERATOR_CLEAR,
CAIRO_COLOR_TRANSPARENT,
&clear);
} else {
cairo_composite_rectangles_t composite;
status = _cairo_composite_rectangles_init_for_boxes (&composite,
extents->surface,
CAIRO_OPERATOR_CLEAR,
&_cairo_pattern_clear.base,
&clear,
NULL);
if (likely (status == CAIRO_INT_STATUS_SUCCESS)) {
status = composite_boxes (compositor, &composite, &clear);
_cairo_composite_rectangles_fini (&composite);
}
}
}
error: