deps: Stop vendoring WebRender (#31212)

The new strategy for dependencies with upstream in Gecko is to manage
them in separate repositories, which will more easily allow rebasing our
changes on top of newer Gecko work.

1 files changed, 0 insertions, 290 deletions

diff --git a/third_party/webrender/examples/blob.rs b/third_party/webrender/examples/blob.rs
deleted file mode 100644
index 65c048c87be..00000000000
--- a/third_party/webrender/examples/blob.rs
+++ /dev/null
@@ -1,290 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-extern crate gleam;
-extern crate glutin;
-extern crate rayon;
-extern crate webrender;
-extern crate winit;
-
-#[path = "common/boilerplate.rs"]
-mod boilerplate;
-
-use crate::boilerplate::{Example, HandyDandyRectBuilder};
-use rayon::{ThreadPool, ThreadPoolBuilder};
-use rayon::prelude::*;
-use std::collections::HashMap;
-use std::sync::Arc;
-use webrender::api::{self, DisplayListBuilder, DocumentId, PipelineId, PrimitiveFlags};
-use webrender::api::{ColorF, CommonItemProperties, SpaceAndClipInfo, ImageDescriptorFlags};
-use webrender::api::units::*;
-use webrender::render_api::*;
-use webrender::euclid::size2;
-
-// This example shows how to implement a very basic BlobImageHandler that can only render
-// a checkerboard pattern.
-
-// The deserialized command list internally used by this example is just a color.
-type ImageRenderingCommands = api::ColorU;
-
-// Serialize/deserialize the blob.
-// For real usecases you should probably use serde rather than doing it by hand.
-
-fn serialize_blob(color: api::ColorU) -> Arc<Vec<u8>> {
-    Arc::new(vec![color.r, color.g, color.b, color.a])
-}
-
-fn deserialize_blob(blob: &[u8]) -> Result<ImageRenderingCommands, ()> {
-    let mut iter = blob.iter();
-    return match (iter.next(), iter.next(), iter.next(), iter.next()) {
-        (Some(&r), Some(&g), Some(&b), Some(&a)) => Ok(api::ColorU::new(r, g, b, a)),
-        (Some(&a), None, None, None) => Ok(api::ColorU::new(a, a, a, a)),
-        _ => Err(()),
-    };
-}
-
-// This is the function that applies the deserialized drawing commands and generates
-// actual image data.
-fn render_blob(
-    commands: Arc<ImageRenderingCommands>,
-    descriptor: &api::BlobImageDescriptor,
-    tile: TileOffset,
-) -> api::BlobImageResult {
-    let color = *commands;
-
-    // Note: This implementation ignores the dirty rect which isn't incorrect
-    // but is a missed optimization.
-
-    // Allocate storage for the result. Right now the resource cache expects the
-    // tiles to have have no stride or offset.
-    let bpp = 4;
-    let mut texels = Vec::with_capacity((descriptor.rect.size.area() * bpp) as usize);
-
-    // Generate a per-tile pattern to see it in the demo. For a real use case it would not
-    // make sense for the rendered content to depend on its tile.
-    let tile_checker = (tile.x % 2 == 0) != (tile.y % 2 == 0);
-
-    let [w, h] = descriptor.rect.size.to_array();
-    let offset = descriptor.rect.origin;
-
-    for y in 0..h {
-        for x in 0..w {
-            // Apply the tile's offset. This is important: all drawing commands should be
-            // translated by this offset to give correct results with tiled blob images.
-            let x2 = x + offset.x;
-            let y2 = y + offset.y;
-
-            // Render a simple checkerboard pattern
-            let checker = if (x2 % 20 >= 10) != (y2 % 20 >= 10) {
-                1
-            } else {
-                0
-            };
-            // ..nested in the per-tile checkerboard pattern
-            let tc = if tile_checker { 0 } else { (1 - checker) * 40 };
-
-            match descriptor.format {
-                api::ImageFormat::BGRA8 => {
-                    texels.push(color.b * checker + tc);
-                    texels.push(color.g * checker + tc);
-                    texels.push(color.r * checker + tc);
-                    texels.push(color.a * checker + tc);
-                }
-                api::ImageFormat::R8 => {
-                    texels.push(color.a * checker + tc);
-                }
-                _ => {
-                    return Err(api::BlobImageError::Other(
-                        format!("Unsupported image format"),
-                    ));
-                }
-            }
-        }
-    }
-
-    Ok(api::RasterizedBlobImage {
-        data: Arc::new(texels),
-        rasterized_rect: size2(w, h).into(),
-    })
-}
-
-struct CheckerboardRenderer {
-    // We are going to defer the rendering work to worker threads.
-    // Using a pre-built Arc<ThreadPool> rather than creating our own threads
-    // makes it possible to share the same thread pool as the glyph renderer (if we
-    // want to).
-    workers: Arc<ThreadPool>,
-
-    // The deserialized drawing commands.
-    // In this example we store them in Arcs. This isn't necessary since in this simplified
-    // case the command list is a simple 32 bits value and would be cheap to clone before sending
-    // to the workers. But in a more realistic scenario the commands would typically be bigger
-    // and more expensive to clone, so let's pretend it is also the case here.
-    image_cmds: HashMap<api::BlobImageKey, Arc<ImageRenderingCommands>>,
-}
-
-impl CheckerboardRenderer {
-    fn new(workers: Arc<ThreadPool>) -> Self {
-        CheckerboardRenderer {
-            image_cmds: HashMap::new(),
-            workers,
-        }
-    }
-}
-
-impl api::BlobImageHandler for CheckerboardRenderer {
-    fn create_similar(&self) -> Box<dyn api::BlobImageHandler> {
-        Box::new(CheckerboardRenderer::new(Arc::clone(&self.workers)))
-    }
-
-    fn add(&mut self, key: api::BlobImageKey, cmds: Arc<api::BlobImageData>,
-           _visible_rect: &DeviceIntRect, _: api::TileSize) {
-        self.image_cmds
-            .insert(key, Arc::new(deserialize_blob(&cmds[..]).unwrap()));
-    }
-
-    fn update(&mut self, key: api::BlobImageKey, cmds: Arc<api::BlobImageData>,
-              _visible_rect: &DeviceIntRect, _dirty_rect: &BlobDirtyRect) {
-        // Here, updating is just replacing the current version of the commands with
-        // the new one (no incremental updates).
-        self.image_cmds
-            .insert(key, Arc::new(deserialize_blob(&cmds[..]).unwrap()));
-    }
-
-    fn delete(&mut self, key: api::BlobImageKey) {
-        self.image_cmds.remove(&key);
-    }
-
-    fn prepare_resources(
-        &mut self,
-        _services: &dyn api::BlobImageResources,
-        _requests: &[api::BlobImageParams],
-    ) {}
-
-    fn enable_multithreading(&mut self, _: bool) {}
-    fn delete_font(&mut self, _font: api::FontKey) {}
-    fn delete_font_instance(&mut self, _instance: api::FontInstanceKey) {}
-    fn clear_namespace(&mut self, _namespace: api::IdNamespace) {}
-    fn create_blob_rasterizer(&mut self) -> Box<dyn api::AsyncBlobImageRasterizer> {
-        Box::new(Rasterizer {
-            workers: Arc::clone(&self.workers),
-            image_cmds: self.image_cmds.clone(),
-        })
-    }
-}
-
-struct Rasterizer {
-    workers: Arc<ThreadPool>,
-    image_cmds: HashMap<api::BlobImageKey, Arc<ImageRenderingCommands>>,
-}
-
-impl api::AsyncBlobImageRasterizer for Rasterizer {
-    fn rasterize(
-        &mut self,
-        requests: &[api::BlobImageParams],
-        _low_priority: bool
-    ) -> Vec<(api::BlobImageRequest, api::BlobImageResult)> {
-        let requests: Vec<(&api::BlobImageParams, Arc<ImageRenderingCommands>)> = requests.into_iter().map(|params| {
-            (params, Arc::clone(&self.image_cmds[&params.request.key]))
-        }).collect();
-
-        self.workers.install(|| {
-            requests.into_par_iter().map(|(params, commands)| {
-                (params.request, render_blob(commands, &params.descriptor, params.request.tile))
-            }).collect()
-        })
-    }
-}
-
-struct App {}
-
-impl Example for App {
-    fn render(
-        &mut self,
-        api: &mut RenderApi,
-        builder: &mut DisplayListBuilder,
-        txn: &mut Transaction,
-        _device_size: DeviceIntSize,
-        pipeline_id: PipelineId,
-        _document_id: DocumentId,
-    ) {
-        let space_and_clip = SpaceAndClipInfo::root_scroll(pipeline_id);
-
-        builder.push_simple_stacking_context(
-            LayoutPoint::zero(),
-            space_and_clip.spatial_id,
-            PrimitiveFlags::IS_BACKFACE_VISIBLE,
-        );
-
-        let size1 = DeviceIntSize::new(500, 500);
-        let blob_img1 = api.generate_blob_image_key();
-        txn.add_blob_image(
-            blob_img1,
-            api::ImageDescriptor::new(
-                size1.width,
-                size1.height,
-                api::ImageFormat::BGRA8,
-                ImageDescriptorFlags::IS_OPAQUE,
-            ),
-            serialize_blob(api::ColorU::new(50, 50, 150, 255)),
-            size1.into(),
-            Some(128),
-        );
-        let bounds = (30, 30).by(size1.width, size1.height);
-        builder.push_image(
-            &CommonItemProperties::new(bounds, space_and_clip),
-            bounds,
-            api::ImageRendering::Auto,
-            api::AlphaType::PremultipliedAlpha,
-            blob_img1.as_image(),
-            ColorF::WHITE,
-        );
-
-        let size2 = DeviceIntSize::new(256, 256);
-        let blob_img2 = api.generate_blob_image_key();
-        txn.add_blob_image(
-            blob_img2,
-            api::ImageDescriptor::new(
-                size2.width,
-                size2.height,
-                api::ImageFormat::BGRA8,
-                ImageDescriptorFlags::IS_OPAQUE,
-            ),
-            serialize_blob(api::ColorU::new(50, 150, 50, 255)),
-            size2.into(),
-            None,
-        );
-        let bounds = (600, 600).by(size2.width, size2.height);
-        builder.push_image(
-            &CommonItemProperties::new(bounds, space_and_clip),
-            bounds,
-            api::ImageRendering::Auto,
-            api::AlphaType::PremultipliedAlpha,
-            blob_img2.as_image(),
-            ColorF::WHITE,
-        );
-
-        builder.pop_stacking_context();
-    }
-}
-
-fn main() {
-    let workers =
-        ThreadPoolBuilder::new().thread_name(|idx| format!("WebRender:Worker#{}", idx))
-                                .build();
-
-    let workers = Arc::new(workers.unwrap());
-
-    let opts = webrender::RendererOptions {
-        workers: Some(Arc::clone(&workers)),
-        // Register our blob renderer, so that WebRender integrates it in the resource cache..
-        // Share the same pool of worker threads between WebRender and our blob renderer.
-        blob_image_handler: Some(Box::new(CheckerboardRenderer::new(Arc::clone(&workers)))),
-        ..Default::default()
-    };
-
-    let mut app = App {};
-
-    boilerplate::main_wrapper(&mut app, Some(opts));
-}