gecko-dev/gfx/cairo/cairo-mask-extends-bug.patch

42 lines
1.6 KiB
Diff

diff --git a/gfx/cairo/cairo/src/cairo-image-surface.c b/gfx/cairo/cairo/src/cairo-image-surface.c
--- a/gfx/cairo/cairo/src/cairo-image-surface.c
+++ b/gfx/cairo/cairo/src/cairo-image-surface.c
@@ -1788,18 +1788,35 @@ static cairo_status_t
cairo_boxes_t *boxes)
{
cairo_boxes_t clear;
cairo_box_t box;
cairo_status_t status;
struct _cairo_boxes_chunk *chunk;
int i;
- if (boxes->num_boxes < 1 && clip_region == NULL)
- return _cairo_image_surface_fixup_unbounded (dst, extents, NULL);
+ // If we have no boxes then we need to clear the entire extents
+ // because we have nothing to draw.
+ if (boxes->num_boxes < 1 && clip_region == NULL) {
+ int x = extents->unbounded.x;
+ int y = extents->unbounded.y;
+ int width = extents->unbounded.width;
+ int height = extents->unbounded.height;
+
+ pixman_color_t color = { 0 };
+ pixman_box32_t box = { x, y, x + width, y + height };
+
+ if (! pixman_image_fill_boxes (PIXMAN_OP_CLEAR,
+ dst->pixman_image,
+ &color,
+ 1, &box)) {
+ return _cairo_error (CAIRO_STATUS_NO_MEMORY);
+ }
+ return CAIRO_STATUS_SUCCESS;
+ }
_cairo_boxes_init (&clear);
box.p1.x = _cairo_fixed_from_int (extents->unbounded.x + extents->unbounded.width);
box.p1.y = _cairo_fixed_from_int (extents->unbounded.y);
box.p2.x = _cairo_fixed_from_int (extents->unbounded.x);
box.p2.y = _cairo_fixed_from_int (extents->unbounded.y + extents->unbounded.height);