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LibWeb: Implement border radius corner clipping in GPU painter

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It is implemented in the way identical to how it works in CPU painter:
1. SampleUnderCorners command saves pixels within corners into a
   texture.
2. BlitCornerClipping command uses the texture prepared earlier to
   restore pixels within corners.
This commit is contained in:
Aliaksandr Kalenik 2023-12-17 14:34:44 +01:00 • committed by Andreas Kling
parent 177e7df1c5
commit bd08b1815f
6 changed files with 127 additions and 13 deletions
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15
Userland/Libraries/LibAccelGfx/Painter.h
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@ -34,6 +34,8 @@ public:
Painter(Context&, NonnullRefPtr<Canvas>);
~Painter();
Canvas const& canvas() { return *m_target_canvas; }
void clear(Gfx::Color);
void save();
@ -53,6 +55,12 @@ public:
Bilinear,
};
enum class BlendingMode {
AlphaAdd,
AlphaOverride,
AlphaPreserve,
};
void draw_line(Gfx::IntPoint a, Gfx::IntPoint b, float thickness, Gfx::Color color);
void draw_line(Gfx::FloatPoint a, Gfx::FloatPoint b, float thickness, Gfx::Color color);
@ -76,11 +84,12 @@ public:
float horizontal_radius;
float vertical_radius;
};
void fill_rect_with_rounded_corners(Gfx::IntRect const& rect, Color const& color, CornerRadius const& top_left_radius, CornerRadius const& top_right_radius, CornerRadius const& bottom_left_radius, CornerRadius const& bottom_right_radius);
void fill_rect_with_rounded_corners(Gfx::FloatRect const& rect, Color const& color, CornerRadius const& top_left_radius, CornerRadius const& top_right_radius, CornerRadius const& bottom_left_radius, CornerRadius const& bottom_right_radius);
void fill_rect_with_rounded_corners(Gfx::IntRect const& rect, Color const& color, CornerRadius const& top_left_radius, CornerRadius const& top_right_radius, CornerRadius const& bottom_left_radius, CornerRadius const& bottom_right_radius, BlendingMode = BlendingMode::AlphaAdd);
void fill_rect_with_rounded_corners(Gfx::FloatRect const& rect, Color const& color, CornerRadius const& top_left_radius, CornerRadius const& top_right_radius, CornerRadius const& bottom_left_radius, CornerRadius const& bottom_right_radius, BlendingMode = BlendingMode::AlphaAdd);
void blit_canvas(Gfx::IntRect const& dst_rect, Canvas const&, float opacity = 1.0f, Optional<Gfx::AffineTransform> affine_transform = {});
void blit_canvas(Gfx::FloatRect const& dst_rect, Canvas const&, float opacity = 1.0f, Optional<Gfx::AffineTransform> affine_transform = {});
void blit_canvas(Gfx::FloatRect const& dst_rect, Canvas const&, Gfx::FloatRect const& src_rect, float opacity = 1.0f, Optional<Gfx::AffineTransform> affine_transform = {}, BlendingMode = BlendingMode::AlphaAdd);
enum class BlurDirection {
Horizontal,
@ -101,7 +110,7 @@ private:
[[nodiscard]] State& state() { return m_state_stack.last(); }
[[nodiscard]] State const& state() const { return m_state_stack.last(); }
void blit_scaled_texture(Gfx::FloatRect const& dst_rect, GL::Texture const&, Gfx::FloatRect const& src_rect, ScalingMode, float opacity = 1.0f, Optional<Gfx::AffineTransform> affine_transform = {});
void blit_scaled_texture(Gfx::FloatRect const& dst_rect, GL::Texture const&, Gfx::FloatRect const& src_rect, ScalingMode, float opacity = 1.0f, Optional<Gfx::AffineTransform> affine_transform = {}, BlendingMode = BlendingMode::AlphaAdd);
void blit_blurred_texture(Gfx::FloatRect const& dst_rect, GL::Texture const&, Gfx::FloatRect const& src_rect, int radius, BlurDirection direction, ScalingMode = ScalingMode::NearestNeighbor);
void bind_target_canvas();