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LibCore+LibWeb: Use Metal backend for Skia painter on macOS

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If Metal context and IOSurface are available, Skia painter will use
Ganesh GPU backend on macOS, which is noticeably faster than the default
CPU backend.

Painting pipeline:
1. (WebContent) Allocate IOSurface for backing store
2. (WebContent) Allocate MTLTexture that wraps IOSurface
3. (WebContent) Paint into MTLTexture using Skia
4. (Browser) Wrap IOSurface into Gfx::Painter and use
   QPainter/CoreGraphics to blit backing store into viewport.

Things we should improve in the future:
1. Upload textures for images in advance instead of doing that before
   every repaint.
2. Teach AppKit client to read directly from IOSurface instead of
   copying.
This commit is contained in:
Aliaksandr Kalenik 2024-06-26 17:56:55 +02:00 • committed by Alexander Kalenik
commit 79acb998e1
Notes: sideshowbarker 2024-07-16 20:05:14 +09:00
10 changed files with 288 additions and 21 deletions
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24
Userland/Libraries/LibWeb/HTML/TraversableNavigable.cpp
View file

@ -18,7 +18,6 @@
#include <LibWeb/HTML/Window.h>
#include <LibWeb/Page/Page.h>
#include <LibWeb/Painting/DisplayListPlayerCPU.h>
#include <LibWeb/Painting/DisplayListPlayerSkia.h>
#include <LibWeb/Platform/EventLoopPlugin.h>
#ifdef HAS_ACCELERATED_GRAPHICS
@ -33,6 +32,10 @@ TraversableNavigable::TraversableNavigable(JS::NonnullGCPtr<Page> page)
: Navigable(page)
, m_session_history_traversal_queue(vm().heap().allocate_without_realm<SessionHistoryTraversalQueue>())
{
#ifdef AK_OS_MACOS
m_metal_context = Core::get_metal_context();
m_skia_backend_context = Web::Painting::DisplayListPlayerSkia::create_metal_context(*m_metal_context);
#endif
}
TraversableNavigable::~TraversableNavigable() = default;
@ -1174,10 +1177,8 @@ JS::GCPtr<DOM::Node> TraversableNavigable::currently_focused_area()
return candidate;
}
void TraversableNavigable::paint(Web::DevicePixelRect const& content_rect, Painting::BackingStore& backing_store, Web::PaintOptions paint_options)
void TraversableNavigable::paint(Web::DevicePixelRect const& content_rect, Painting::BackingStore& target, Web::PaintOptions paint_options)
{
auto& target = backing_store.bitmap();
Painting::DisplayList display_list;
Painting::DisplayListRecorder display_list_recorder(display_list);
@ -1193,7 +1194,7 @@ void TraversableNavigable::paint(Web::DevicePixelRect const& content_rect, Paint
auto display_list_player_type = page().client().display_list_player_type();
if (display_list_player_type == DisplayListPlayerType::GPU) {
#ifdef HAS_ACCELERATED_GRAPHICS
Web::Painting::DisplayListPlayerGPU player(*paint_options.accelerated_graphics_context, target);
Web::Painting::DisplayListPlayerGPU player(*paint_options.accelerated_graphics_context, target.bitmap());
display_list.execute(player);
#else
static bool has_warned_about_configuration = false;
@ -1204,10 +1205,19 @@ void TraversableNavigable::paint(Web::DevicePixelRect const& content_rect, Paint
}
#endif
} else if (display_list_player_type == DisplayListPlayerType::Skia) {
Painting::DisplayListPlayerSkia player(target);
#ifdef AK_OS_MACOS
if (m_metal_context && m_skia_backend_context && is<Painting::IOSurfaceBackingStore>(target)) {
auto& iosurface_backing_store = static_cast<Painting::IOSurfaceBackingStore&>(target);
auto texture = m_metal_context->create_texture_from_iosurface(iosurface_backing_store.iosurface_handle());
Painting::DisplayListPlayerSkia player(*m_skia_backend_context, *texture);
display_list.execute(player);
return;
}
#endif
Web::Painting::DisplayListPlayerSkia player(target.bitmap());
display_list.execute(player);
} else {
Web::Painting::DisplayListPlayerCPU player(target);
Web::Painting::DisplayListPlayerCPU player(target.bitmap());
display_list.execute(player);
}
}