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Desktop: Implement GPU accelerated offscreen rendering and improve rendering efficency (#3056)

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* WIP accelerade offscreen canvas implementation

* Implement vulkan dmabuf import

* Add fps printing

* Add feature gates

* Forgot to add file

* Experimental windows support

* Cast ptr to isize

* Remove testing chrome://flags url

* Experimental macos support for texture import

* Cleanup code and improve latency / frame pacing

* Add path for importing textures on windows through dx12

* Update doc comment

* Import textures through metal on macos

* Review cleanup

---------

Co-authored-by: Timon Schelling <me@timon.zip>
This commit is contained in:
Dennis Kobert
2025-08-21 10:09:38 -07:00
committed by Keavon Chambers
co-authored by Timon Schelling
parent 97978c2491
commit e56f858ced
18 changed files with 1226 additions and 51 deletions
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desktop/src/cef.rs
+35
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@@ -1,3 +1,18 @@
//! CEF (Chromium Embedded Framework) integration for Graphite Desktop
//!
//! This module provides CEF browser integration with hardware-accelerated texture sharing.
//!
//! # Hardware Acceleration
//!
//! The texture import system supports platform-specific hardware acceleration:
//!
//! - **Linux**: DMA-BUF via Vulkan external memory (`accelerated_paint_dmabuf` feature)
//! - **Windows**: D3D11 shared textures via either Vulkan or D3D12 interop (`accelerated_paint_d3d11` feature)
//! - **macOS**: IOSurface via Metal/Vulkan interop (`accelerated_paint_iosurface` feature)
//!
//!
//! The system gracefully falls back to CPU textures when hardware acceleration is unavailable.
use crate::CustomEvent;
use crate::render::FrameBufferRef;
use graphite_desktop_wrapper::{WgpuContext, deserialize_editor_message};
@@ -10,15 +25,23 @@ mod dirs;
mod input;
mod internal;
mod ipc;
mod platform;
mod scheme_handler;
mod utility;
#[cfg(feature = "accelerated_paint")]
mod texture_import;
#[cfg(feature = "accelerated_paint")]
use texture_import::SharedTextureHandle;
pub(crate) use context::{Context, InitError, Initialized, Setup, SetupError};
use winit::event_loop::EventLoopProxy;
pub(crate) trait CefEventHandler: Clone {
fn window_size(&self) -> WindowSize;
fn draw<'a>(&self, frame_buffer: FrameBufferRef<'a>);
#[cfg(feature = "accelerated_paint")]
fn draw_gpu(&self, shared_texture: SharedTextureHandle);
/// Scheudule the main event loop to run the cef event loop after the timeout
/// [`_cef_browser_process_handler_t::on_schedule_message_pump_work`] for more documentation.
fn schedule_cef_message_loop_work(&self, scheduled_time: Instant);
@@ -128,4 +151,16 @@ impl CefEventHandler for CefHandler {
};
let _ = self.event_loop_proxy.send_event(CustomEvent::DesktopWrapperMessage(desktop_wrapper_message));
}
#[cfg(feature = "accelerated_paint")]
fn draw_gpu(&self, shared_texture: SharedTextureHandle) {
match shared_texture.import_texture(&self.wgpu_context.device) {
Ok(texture) => {
let _ = self.event_loop_proxy.send_event(CustomEvent::UiUpdate(texture));
}
Err(e) => {
tracing::error!("Failed to import shared texture: {}", e);
}
}
}
}