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Implemented paint worklet rendering context.

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This commit is contained in:
Alan Jeffrey 2017-06-09 12:47:39 -05:00
parent d47de6ccfc
commit 328fb25a65
15 changed files with 547 additions and 110 deletions
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25
components/layout/display_list_builder.rs
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@ -1174,21 +1174,30 @@ impl FragmentDisplayListBuilding for Fragment {
// TODO: add a one-place cache to avoid drawing the paint image every time.
// https://github.com/servo/servo/issues/17369
debug!("Drawing a paint image {}({},{}).", name, size.width.to_px(), size.height.to_px());
let mut image = match executor.draw_a_paint_image(name, size) {
Ok(image) => image,
Err(err) => return warn!("Error running paint worklet ({:?}).", err),
let (sender, receiver) = ipc::channel().unwrap();
executor.draw_a_paint_image(name, size, sender);
// TODO: timeout
let webrender_image = match receiver.recv() {
Ok(CanvasData::Image(canvas_data)) => {
WebRenderImageInfo {
// TODO: it would be nice to get this data back from the canvas
width: size.width.to_px().abs() as u32,
height: size.height.to_px().abs() as u32,
format: PixelFormat::BGRA8,
key: Some(canvas_data.image_key),
}
},
Ok(CanvasData::WebGL(_)) => return warn!("Paint worklet generated WebGL."),
Err(err) => return warn!("Paint worklet recv generated error ({}).", err),
};
// Make sure the image has a webrender key.
state.layout_context.image_cache.set_webrender_image_key(&mut image);
debug!("Drew a paint image ({},{}).", image.width, image.height);
self.build_display_list_for_webrender_image(state,
style,
display_list_section,
absolute_bounds,
clip,
WebRenderImageInfo::from_image(&image),
webrender_image,
index);
}