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Everywhere: Use IOSurface as backing store on macOS

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Using mmap-allocated memory for backing stores does not allow us to
benefit from using GPU-accelerated painting, because all the performance
increase we get is mostly negated by reading the GPU-allocated texture
back into RAM, so it can be shared with the browser process.

With IOSurface, we get a framebuffer that is both shareable between
processes and can be used as underlying memory for an OpenGL/Metal
texture.

This change does not yet benefit from using IOSurface and merely wraps
them into Gfx::Bitmap to be used by the CPU painter.
This commit is contained in:
Aliaksandr Kalenik 2024-06-20 21:34:51 +03:00 • committed by Andreas Kling
parent e37071ae05
commit c92f8ab1ea
Notes: sideshowbarker 2024-07-16 20:51:53 +09:00
15 changed files with 266 additions and 56 deletions
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4
Userland/Libraries/LibWebView/ViewImplementation.h
View file

@ -12,6 +12,7 @@
#include <AK/LexicalPath.h>
#include <AK/Queue.h>
#include <AK/String.h>
#include <LibCore/Forward.h>
#include <LibCore/Promise.h>
#include <LibGfx/Forward.h>
#include <LibGfx/StandardCursor.h>
@ -118,6 +119,9 @@ public:
void did_update_navigation_buttons_state(Badge<WebContentClient>, bool back_enabled, bool forward_enabled) const;
void did_allocate_backing_stores(Badge<WebContentClient>, i32 front_bitmap_id, Gfx::ShareableBitmap const&, i32 back_bitmap_id, Gfx::ShareableBitmap const&);
#ifdef AK_OS_MACOS
void did_allocate_iosurface_backing_stores(i32 front_bitmap_id, Core::MachPort&&, i32 back_bitmap_id, Core::MachPort&&);
#endif
enum class ScreenshotType {
Visible,