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LibWeb: Skip empty paint borders commands in RecordingPainter

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With this change, we create substantially fewer border painting
commands, which means fewer reallocations of the vector that stores
commands.

This makes the rendering of
https://html.spec.whatwg.org/multipage/browsing-the-web.html visibly
faster, where we allocated ~10 of such commands now vs ~8000 before.
This commit is contained in:
Aliaksandr Kalenik 2023-12-30 16:04:48 +01:00 • committed by Andreas Kling
parent f7a1f28d7f
commit c7e22c7a72
1 changed files with 2 additions and 0 deletions
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2
Userland/Libraries/LibWeb/Painting/RecordingPainter.cpp
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@ -411,6 +411,8 @@ void RecordingPainter::draw_triangle_wave(Gfx::IntPoint a_p1, Gfx::IntPoint a_p2
void RecordingPainter::paint_borders(DevicePixelRect const& border_rect, CornerRadii const& corner_radii, BordersDataDevicePixels const& borders_data)
{
if (borders_data.top.width == 0 && borders_data.right.width == 0 && borders_data.bottom.width == 0 && borders_data.left.width == 0)
return;
push_command(PaintBorders { border_rect, corner_radii, borders_data });
}