Filter sampling outside the source image can leak black into the edges
of the
desktop image. This is most easily seen by scaling the default tiled image
with this weston.ini:
# no background-image and no background-color
background-type=scale-crop
---
clients/desktop-shell.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/clients/desktop-shell.c b/clients/desktop-shell.c
index 4880888..e121cc7 100644
--- a/clients/desktop-shell.c
+++ b/clients/desktop-shell.c
@@ -724,6 +724,7 @@ background_draw(struct widget *widget, void *data)
case BACKGROUND_SCALE:
cairo_matrix_init_scale(&matrix, sx, sy);
cairo_pattern_set_matrix(pattern, &matrix);
+ cairo_pattern_set_extend(pattern, CAIRO_EXTEND_PAD);
break;
case BACKGROUND_SCALE_CROP:
s = (sx < sy) ? sx : sy;
@@ -733,6 +734,7 @@ background_draw(struct widget *widget, void *data)
cairo_matrix_init_translate(&matrix, tx, ty);
cairo_matrix_scale(&matrix, s, s);
cairo_pattern_set_matrix(pattern, &matrix);
+ cairo_pattern_set_extend(pattern, CAIRO_EXTEND_PAD);
break;
case BACKGROUND_TILE:
cairo_pattern_set_extend(pattern, CAIRO_EXTEND_REPEAT);
--
1.7.9.5
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