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| author | Philip Withnall <philip@tecnocode.co.uk> | 2017-01-07 19:18:12 +0000 |
|---|---|---|
| committer | Philip Withnall <withnall@endlessm.com> | 2017-01-10 09:52:33 +0000 |
| commit | f4b97747e770650063bf7f6d7c1199ecba5ed54f (patch) | |
| tree | 0ea37f916c2e4877f1511bab6aab2c805817317d /gdk-pixbuf | |
| parent | 0d51eb13643f8241393bbb4f4d905f3d4a7e4871 (diff) | |
| download | gdk-pixbuf-f4b97747e770650063bf7f6d7c1199ecba5ed54f.tar.gz | |
docs: Document existing scaling and transformation fast paths
There are not many, as far as I can see.
https://bugzilla.gnome.org/show_bug.cgi?id=442452
Diffstat (limited to 'gdk-pixbuf')
| -rw-r--r-- | gdk-pixbuf/gdk-pixbuf-scale.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gdk-pixbuf/gdk-pixbuf-scale.c b/gdk-pixbuf/gdk-pixbuf-scale.c index e6b78c247..202e433ac 100644 --- a/gdk-pixbuf/gdk-pixbuf-scale.c +++ b/gdk-pixbuf/gdk-pixbuf-scale.c @@ -261,6 +261,9 @@ gdk_pixbuf_composite (const GdkPixbuf *src, * colors @color1 and @color2 and renders it onto the destination * image. * + * If the source image has no alpha channel, and @overall_alpha is 255, a fast + * path is used which omits the alpha blending and just performs the scaling. + * * See gdk_pixbuf_composite_color_simple() for a simpler variant of this * function suitable for many tasks. * @@ -414,6 +417,8 @@ gdk_pixbuf_composite_color_simple (const GdkPixbuf *src, * Rotates a pixbuf by a multiple of 90 degrees, and returns the * result in a new pixbuf. * + * If @angle is 0, a copy of @src is returned, avoiding any rotation. + * * Returns: (nullable) (transfer full): the new #GdkPixbuf, or %NULL * if not enough memory could be allocated for it. * |