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WindowServer: Only blit dirty rect of windows to back buffer.
Previously we'd blit every pixel in every window that intersected any dirty rect to the back buffer. With this patch, we limit ourselves to blitting the pixels inside the actual dirty rects. There's still a lot of optimizations to make in this code.
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7 changed files with 61 additions and 35 deletions
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@ -28,7 +28,7 @@ public:
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void set_pixel(const Point&, Color);
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void draw_line(const Point&, const Point&, Color);
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void draw_focus_rect(const Rect&);
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void blit(const Point&, const GraphicsBitmap&);
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void blit(const Point&, const GraphicsBitmap&, const Rect& src_rect);
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enum class TextAlignment { TopLeft, CenterLeft, Center };
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void draw_text(const Rect&, const String&, TextAlignment = TextAlignment::TopLeft, Color = Color());
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@ -40,6 +40,10 @@ public:
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void set_draw_op(DrawOp op) { m_draw_op = op; }
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DrawOp draw_op() const { return m_draw_op; }
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void set_clip_rect(const Rect& rect) { m_clip_rect = rect; }
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void clear_clip_rect() { m_clip_rect = { 0, 0, 1024, 768 }; }
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Rect clip_rect() const { return m_clip_rect; }
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private:
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void set_pixel_with_draw_op(dword& pixel, const Color&);
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