2 files changed, 22 insertions, 6 deletions
diff --git a/components/webgpu/Cargo.toml b/components/webgpu/Cargo.toml
index f25f160b1b0..39ca562affe 100644
--- a/components/webgpu/Cargo.toml
+++ b/components/webgpu/Cargo.toml
@@ -22,6 +22,7 @@ malloc_size_of = { workspace = true }
 serde = { workspace = true, features = ["serde_derive"] }
 servo_config = { path = "../config" }
 webgpu_traits = { workspace = true }
+snapshot = { workspace = true }
 webrender = { workspace = true }
 webrender_api = { workspace = true }
 wgpu-core = { workspace = true, features = ["serde", "wgsl"] }
diff --git a/components/webgpu/swapchain.rs b/components/webgpu/swapchain.rs
index 6d61540581b..a3ca15b638d 100644
--- a/components/webgpu/swapchain.rs
+++ b/components/webgpu/swapchain.rs
@@ -10,9 +10,10 @@ use std::sync::{Arc, Mutex};
 use arrayvec::ArrayVec;
 use compositing_traits::{WebrenderExternalImageApi, WebrenderImageSource};
 use euclid::default::Size2D;
-use ipc_channel::ipc::{IpcSender, IpcSharedMemory};
+use ipc_channel::ipc::IpcSender;
 use log::{error, warn};
 use serde::{Deserialize, Serialize};
+use snapshot::{IpcSnapshot, Snapshot};
 use webgpu_traits::{
     ContextConfiguration, Error, PRESENTATION_BUFFER_COUNT, WebGPUContextId, WebGPUMsg,
 };
@@ -364,20 +365,34 @@ impl crate::WGPU {
         );
     }
 
-    pub(crate) fn get_image(&self, context_id: WebGPUContextId) -> IpcSharedMemory {
+    pub(crate) fn get_image(&self, context_id: WebGPUContextId) -> IpcSnapshot {
         let webgpu_contexts = self.wgpu_image_map.lock().unwrap();
         let context_data = webgpu_contexts.get(&context_id).unwrap();
-        let buffer_size = context_data.image_desc.buffer_size();
+        let size = context_data.image_desc.size().cast().cast_unit();
         let data = if let Some(present_buffer) = context_data
             .swap_chain
             .as_ref()
             .and_then(|swap_chain| swap_chain.data.as_ref())
         {
-            IpcSharedMemory::from_bytes(present_buffer.slice())
+            let format = match context_data.image_desc.0.format {
+                ImageFormat::RGBA8 => snapshot::PixelFormat::RGBA,
+                ImageFormat::BGRA8 => snapshot::PixelFormat::BGRA,
+                _ => unimplemented!(),
+            };
+            let alpha_mode = if context_data.image_desc.0.is_opaque() {
+                snapshot::AlphaMode::AsOpaque {
+                    premultiplied: false,
+                }
+            } else {
+                snapshot::AlphaMode::Transparent {
+                    premultiplied: true,
+                }
+            };
+            Snapshot::from_vec(size, format, alpha_mode, present_buffer.slice().to_vec())
         } else {
-            IpcSharedMemory::from_byte(0, buffer_size as usize)
+            Snapshot::cleared(size)
         };
-        data
+        data.as_ipc()
     }
 
     pub(crate) fn update_context(