a08734ecbc
2D canvas contexts started publishing partial frames after canvas rasterization moved into the Compositor. WebContent still splits large recorded command lists after 64 commands, but every split batch was sent through the same compositor path as the end-of-frame flush. The compositor replayed each batch into the DrawCanvas source surface, so a pending present could sample a canvas after clear and before the rest of the next frame had been drawn. Canvas-heavy pages such as slither.com then flickered between partial and complete frames. Carry an explicit commit bit with 2D canvas command updates. Non-commit batches now update a hidden working canvas in the Compositor, while the display-list-visible surface keeps the last committed canvas contents. The end-of-frame canvas preparation sends the commit boundary, including the empty-commit case needed when the auto-flush consumed all recorded commands before prepare_for_compositing() runs.
54 lines
4.2 KiB
Text
54 lines
4.2 KiB
Text
#include <AK/NonnullRefPtr.h>
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#include <AK/Optional.h>
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#include <LibCore/AnonymousBuffer.h>
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#include <LibGfx/CanvasCommandList.h>
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#include <LibGfx/DecodedImageFrame.h>
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#include <LibGfx/Point.h>
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#include <LibGfx/Rect.h>
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#include <LibGfx/ShareableBitmap.h>
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#include <LibGfx/Size.h>
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#include <LibMedia/VideoFrame.h>
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#include <LibWeb/Compositor/Types.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/Painting/AccumulatedVisualContext.h>
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#include <LibWeb/Painting/DisplayList.h>
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#include <LibWeb/Painting/DisplayListResourceStorage.h>
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#include <LibWeb/Painting/ScrollState.h>
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#include <LibWeb/WebGL/Types.h>
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endpoint CompositorWebContentServer
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{
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init_transport(int peer_pid) => (int compositor_pid)
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set_parent_context(Web::Compositor::CompositorContextId context_id, Optional<Web::Compositor::CompositorContextId> parent_context_id) =|
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stop_presenting_to_client(Web::Compositor::CompositorContextId context_id) =|
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destroy_context(Web::Compositor::CompositorContextId context_id) =|
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update_display_list(Web::Compositor::CompositorContextId context_id, NonnullRefPtr<Web::Painting::DisplayList> display_list, Web::Painting::AccumulatedVisualContextTree visual_context_tree, Web::Painting::DisplayListResourceTransaction resource_transaction, Web::Painting::ScrollStateSnapshot scroll_state_snapshot) =|
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update_visual_context_tree(Web::Compositor::CompositorContextId context_id, Web::Painting::AccumulatedVisualContextTree visual_context_tree) =|
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update_scroll_state(Web::Compositor::CompositorContextId context_id, Web::Painting::ScrollStateSnapshot scroll_state_snapshot) =|
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update_video_frame(Web::Compositor::CompositorContextId context_id, Web::Painting::VideoFrameResourceId frame_id, NonnullRefPtr<Media::VideoFrame const> frame) =|
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clear_video_frame(Web::Compositor::CompositorContextId context_id, Web::Painting::VideoFrameResourceId frame_id) =|
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create_canvas_2d_context(Gfx::IntSize size, bool alpha) => (bool success, Web::Painting::CanvasId canvas_id)
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update_canvas_2d_commands(Web::Painting::CanvasId canvas_id, Gfx::CanvasCommandList commands, bool commit) =|
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destroy_canvas_context(Web::Painting::CanvasId canvas_id) =|
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get_canvas_pixels(Web::Painting::CanvasId canvas_id, Gfx::IntRect rect) => (Gfx::ShareableBitmap pixels)
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create_webgl_context(Web::WebGL::WebGLVersion webgl_version, Gfx::IntSize size, bool depth, bool stencil, bool antialias) => (bool success, Web::Painting::CanvasId canvas_id, Vector<String> supported_extensions)
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webgl_commands(Web::Painting::CanvasId canvas_id, ByteBuffer commands, Vector<Gfx::DecodedImageFrame> bitmaps) =|
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webgl_present_canvas(Web::Painting::CanvasId canvas_id, bool preserve_drawing_buffer) =|
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webgl_sync_call(Web::Painting::CanvasId canvas_id, ByteBuffer request) => (ByteBuffer reply)
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webgl_read_pixels(Web::Painting::CanvasId canvas_id, i32 x, i32 y, i32 width, i32 height, u32 format, u32 type, i32 buf_size, Core::AnonymousBuffer pixels) => (i32 length, i32 columns, i32 rows)
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webgl_read_buffer_sub_data(Web::Painting::CanvasId canvas_id, u32 target, i64 offset, i64 size, Core::AnonymousBuffer data) => ()
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invalidate_wheel_event_listener_state(Web::Compositor::CompositorContextId context_id, u64 generation) =|
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async_scroll_by(Web::Compositor::CompositorContextId context_id, Web::UniqueNodeID document_id, Gfx::FloatPoint position, Gfx::FloatPoint delta, Gfx::IntRect viewport_rect, Web::Compositor::AsyncScrollOperationTracking operation_tracking) => (Web::Compositor::AsyncScrollEnqueueResult result)
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should_defer_main_thread_present_for_async_scroll(Web::Compositor::CompositorContextId context_id) => (bool should_defer)
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take_pending_async_scroll_updates(Web::Compositor::CompositorContextId context_id) => (Web::Compositor::PendingAsyncScrollUpdates updates)
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viewport_size_updated(Web::Compositor::CompositorContextId context_id, Gfx::IntSize viewport_size, Web::Compositor::WindowResizingInProgress window_resize_in_progress) =|
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present_frame(Web::Compositor::CompositorContextId context_id, Gfx::IntRect viewport_rect) =|
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request_screenshot(Web::Compositor::CompositorContextId context_id, Web::Compositor::ScreenshotRequestId request_id, Gfx::ShareableBitmap target_bitmap) =|
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}
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