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WindowServer: Add initial support for rendering on multiple screens

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This allows WindowServer to use multiple framebuffer devices and
compose the desktop with any arbitrary layout. Currently, it is assumed
that it is configured contiguous and non-overlapping, but this should
eventually be enforced.

To make rendering efficient, each window now also tracks on which
screens it needs to be rendered. This way we don't have to iterate all
the windows for each screen but instead use the same rendering loop and
then only render to the screen (or screens) that the window actually
uses.
This commit is contained in:
Tom 2021-06-13 06:16:06 -06:00 • committed by Andreas Kling
parent 499c33ae0c
commit 4392da970a
42 changed files with 1127 additions and 563 deletions
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6
Userland/Services/WindowServer/ClientConnection.h
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@ -40,7 +40,7 @@ public:
static ClientConnection* from_client_id(int client_id);
static void for_each_client(Function<void(ClientConnection&)>);
void notify_about_new_screen_rect(const Gfx::IntRect&);
void notify_about_new_screen_rects(const Vector<Gfx::IntRect, 4>&, size_t);
void post_paint_message(Window&, bool ignore_occlusion = false);
Menu* find_menu_by_id(int menu_id)
@ -125,7 +125,7 @@ private:
virtual void set_background_color(String const&) override;
virtual void set_wallpaper_mode(String const&) override;
virtual Messages::WindowServer::GetWallpaperResponse get_wallpaper() override;
virtual Messages::WindowServer::SetResolutionResponse set_resolution(Gfx::IntSize const&, int) override;
virtual Messages::WindowServer::SetResolutionResponse set_resolution(u32, Gfx::IntSize const&, int) override;
virtual void set_window_cursor(i32, i32) override;
virtual void set_window_custom_cursor(i32, Gfx::ShareableBitmap const&) override;
virtual void popup_menu(i32, Gfx::IntPoint const&) override;
@ -153,7 +153,7 @@ private:
virtual Messages::WindowServer::GetDoubleClickSpeedResponse get_double_click_speed() override;
virtual void set_window_modified(i32, bool) override;
virtual Messages::WindowServer::IsWindowModifiedResponse is_window_modified(i32) override;
virtual Messages::WindowServer::GetDesktopDisplayScaleResponse get_desktop_display_scale() override;
virtual Messages::WindowServer::GetDesktopDisplayScaleResponse get_desktop_display_scale(u32) override;
Window* window_from_id(i32 window_id);