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LibWeb: Make all clip rects anti-aliased

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This fixes aliased edges when e.g. applying rotation transforms to
certain shapes or SVGs. Although the clip rects themselves are
rectangular, a non-identity matrix transform can be active for the
canvas.

Fixes #5909.
This commit is contained in:
Jelle Raaijmakers 2025-11-12 14:27:22 +01:00 • committed by Jelle Raaijmakers
parent b9244903fc
commit 489dea58ba
Notes: github-actions[bot] 2025-11-12 16:44:10 +00:00
4 changed files with 24 additions and 3 deletions
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6
Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
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@ -165,7 +165,7 @@ void DisplayListPlayerSkia::draw_scaled_immutable_bitmap(DrawScaledImmutableBitm
auto& canvas = surface().canvas();
SkPaint paint;
canvas.save();
canvas.clipRect(clip_rect);
canvas.clipRect(clip_rect, true);
canvas.drawImageRect(command.bitmap->sk_image(), dst_rect, to_skia_sampling_options(command.scaling_mode), &paint);
canvas.restore();
}
@ -193,7 +193,7 @@ void DisplayListPlayerSkia::add_clip_rect(AddClipRect const& command)
{
auto& canvas = surface().canvas();
auto const& rect = command.rect;
canvas.clipRect(to_skia_rect(rect));
canvas.clipRect(to_skia_rect(rect), true);
}
void DisplayListPlayerSkia::save(Save const&)
@ -780,7 +780,7 @@ void DisplayListPlayerSkia::apply_backdrop_filter(ApplyBackdropFilter const& com
auto rect = to_skia_rect(command.backdrop_region);
canvas.save();
canvas.clipRect(rect);
canvas.clipRect(rect, true);
ScopeGuard guard = [&] { canvas.restore(); };
if (command.backdrop_filter.has_value()) {