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PixelPaint: BrushTool performance optimization

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This patch optimizes how the Brush-Tool modifies the pixels. The new
logic generates a "reference brush" with the required size, falloff
and color only once and uses that for the rawing operations. If no
editing mask is used the reference brush is writen via a blit operation
to the content or mask image. This increases the drawing speed and
therefore also allows bigger brush sizes.
This commit is contained in:
Torstennator 2023-07-18 14:44:00 +02:00 • committed by Sam Atkins
parent 31ee20e179
commit b9b4ca064f
3 changed files with 62 additions and 8 deletions
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4
Userland/Applications/PixelPaint/Tools/BrushTool.h
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@ -62,6 +62,10 @@ private:
bool m_has_clicked { false };
Gfx::IntPoint m_last_position;
NonnullRefPtr<Gfx::Bitmap const> m_cursor = build_cursor();
RefPtr<Gfx::Bitmap> m_brush_reference = nullptr;
Gfx::Color m_ensured_color {};
int m_ensured_hardness = 0;
ErrorOr<void> ensure_brush_reference_bitmap(Gfx::Color);
};
}