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rendericon: Ignore transparent icons

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If the recoloring would end up multiplying the alpha component with 0
anyway, just skip drawing anything altogether.

This increases the icon count in the switch demo of the fishbowl from
~260 to ~280 on my system.
This commit is contained in:
Timm Bäder 2019-02-10 10:27:27 +01:00
parent 2146fd28f8
commit d1ea591f18
1 changed files with 4 additions and 0 deletions
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4
gtk/gtkrendericon.c
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@ -133,6 +133,9 @@ gtk_css_style_snapshot_icon_paintable (GtkCssStyle *style,
gtk_icon_theme_lookup_symbolic_colors (style, &fg, &sc, &wc, &ec);
if (fg.alpha == 0.0f)
goto transparent;
graphene_matrix_init_from_float (&color_matrix, (float[16]) {
sc.red - fg.red, sc.green - fg.green, sc.blue - fg.blue, 0,
wc.red - fg.red, wc.green - fg.green, wc.blue - fg.blue, 0,
@ -171,5 +174,6 @@ gtk_css_style_snapshot_icon_paintable (GtkCssStyle *style,
if (has_shadow)
gtk_snapshot_pop (snapshot);
transparent:
gtk_css_filter_value_pop_snapshot (filter_value, snapshot);
}