renderborder: Don't snapshot all-invisible borders

If all of the borders have an alpha of 0, we don't need to snapshot
anything.
This commit is contained in:
Timm Bäder 2017-10-19 15:41:20 +02:00
parent 99026d2df8
commit 09750f9937

View File

@ -952,6 +952,7 @@ gtk_css_style_snapshot_border (GtkCssStyle *style,
GtkBorderStyle border_style[4];
GskRoundedRect border_box;
GdkRGBA colors[4];
graphene_simd4f_t alpha_test_vector;
/* Optimize the most common case of "This widget has no border" */
if (border_width[0] == 0 &&
@ -960,16 +961,20 @@ gtk_css_style_snapshot_border (GtkCssStyle *style,
border_width[3] == 0)
return;
border_style[0] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
border_style[1] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
border_style[2] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
border_style[3] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
colors[0] = *_gtk_css_rgba_value_get_rgba (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_COLOR));
colors[1] = *_gtk_css_rgba_value_get_rgba (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_RIGHT_COLOR));
colors[2] = *_gtk_css_rgba_value_get_rgba (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_COLOR));
colors[3] = *_gtk_css_rgba_value_get_rgba (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_LEFT_COLOR));
alpha_test_vector = graphene_simd4f_init (colors[0].alpha, colors[1].alpha, colors[2].alpha, colors[3].alpha);
if (graphene_simd4f_is_zero4 (alpha_test_vector))
return;
border_style[0] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_TOP_STYLE));
border_style[1] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_RIGHT_STYLE));
border_style[2] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_BOTTOM_STYLE));
border_style[3] = _gtk_css_border_style_value_get (gtk_css_style_get_value (style, GTK_CSS_PROPERTY_BORDER_LEFT_STYLE));
gtk_rounded_boxes_init_for_style (&border_box, NULL, NULL, style, 0, 0, width, height);
snapshot_border (snapshot, &border_box, border_width, colors, border_style);