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| author | Russell Haley <[email protected]> | 2016-02-13 18:59:17 -0600 |
|---|---|---|
| committer | raveit65 <[email protected]> | 2018-07-11 08:40:38 +0200 |
| commit | 7f38bf69cec41fc54e79819022451897e4f1e09b (patch) | |
| tree | b7092d0d13823cd52735dbbbe0c1954e0d54a5bd | |
| parent | f607cda39a44d1cc1114f50ce98c1b6fdd88931f (diff) | |
| download | eom-7f38bf69cec41fc54e79819022451897e4f1e09b.tar.bz2 eom-7f38bf69cec41fc54e79819022451897e4f1e09b.tar.xz | |
EomScrollView: Use better downscaling filter
Replace all instances of CAIRO_FILTER_BILINEAR with CAIRO_FILTER_GOOD.
This produces much less aliasing on downscaled images. CAIRO_FILTER_GOOD
uses the same method as CAIRO_FILTER_BILINEAR for scale factors greater
than 0.75, according to https://bugs.webkit.org/show_bug.cgi?id=147826.
Comparison screenshots made with eog 3.18.1: http://imgur.com/a/NaoOs
CAIRO_FILTER_BEST is better still, but the the visual difference is
almost imperceptible and the performance impact is severe.
https://bugzilla.gnome.org/show_bug.cgi?id=665897
origin commit: https://gitlab.gnome.org/GNOME/eog/commit/fbc1128
fixes https://github.com/mate-desktop/eom/issues/96
| -rw-r--r-- | src/eom-scroll-view.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/src/eom-scroll-view.c b/src/eom-scroll-view.c index 7be50e2..e42cadc 100644 --- a/src/eom-scroll-view.c +++ b/src/eom-scroll-view.c @@ -1411,7 +1411,7 @@ eom_scroll_view_set_antialiasing_in (EomScrollView *view, gboolean state) priv = view->priv; - new_interp_type = state ? CAIRO_FILTER_BILINEAR : CAIRO_FILTER_NEAREST; + new_interp_type = state ? CAIRO_FILTER_GOOD : CAIRO_FILTER_NEAREST; if (priv->interp_type_in != new_interp_type) { priv->interp_type_in = new_interp_type; @@ -1430,7 +1430,7 @@ eom_scroll_view_set_antialiasing_out (EomScrollView *view, gboolean state) priv = view->priv; - new_interp_type = state ? CAIRO_FILTER_BILINEAR : CAIRO_FILTER_NEAREST; + new_interp_type = state ? CAIRO_FILTER_GOOD : CAIRO_FILTER_NEAREST; if (priv->interp_type_out != new_interp_type) { priv->interp_type_out = new_interp_type; @@ -1763,8 +1763,8 @@ eom_scroll_view_init (EomScrollView *view) priv->min_zoom = MIN_ZOOM_FACTOR; priv->zoom_mode = ZOOM_MODE_FIT; priv->upscale = FALSE; - priv->interp_type_in = CAIRO_FILTER_BILINEAR; - priv->interp_type_out = CAIRO_FILTER_BILINEAR; + priv->interp_type_in = CAIRO_FILTER_GOOD; + priv->interp_type_out = CAIRO_FILTER_GOOD; priv->scroll_wheel_zoom = FALSE; priv->zoom_multiplier = IMAGE_VIEW_ZOOM_MULTIPLIER; priv->image = NULL; |