forked from AuroraMiddleware/gtk
gtkcssshadowvalue: Use the blur surface as a mask, instead of painting it
This will make it easier to use an A8 for our blurred surface instead of a ARGB32, which makes things a lot easier and faster.
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@ -366,8 +366,8 @@ gtk_css_shadow_value_finish_drawing (const GtkCssValue *shadow,
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/* Blur the surface. */
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_gtk_cairo_blur_surface (surface, radius);
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cairo_set_source_surface (original_cr, surface, 0, 0);
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cairo_paint (original_cr);
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gdk_cairo_set_source_rgba (original_cr, _gtk_css_rgba_value_get_rgba (shadow->color));
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cairo_mask_surface (original_cr, surface, 0, 0);
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cairo_destroy (cr);
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cairo_surface_destroy (surface);
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