Implement copyExternalImageToTexture

wgpu/Cargo.toml

@@ -215,7 +215,9 @@ web-sys = { version = "0.3.60", features = [
     "GpuFragmentState",
     "GpuFrontFace",
     "GpuImageCopyBuffer",
+    "GpuImageCopyExternalImage",
     "GpuImageCopyTexture",
+    "GpuImageCopyTextureTagged",
     "GpuImageDataLayout",
     "GpuIndexFormat",
     "GpuLoadOp",
@@ -294,5 +296,12 @@ parking_lot = ">=0.11,<0.13"
 [target.'cfg(target_arch = "wasm32")'.dev-dependencies]
 console_error_panic_hook = "0.1.7"
 console_log = "0.2"
-# We need the Location feature in the framework examples
-web-sys = { version = "0.3.60", features = ["Location"] }
+# We need these features in the framework examples
+web-sys = { version = "0.3.60", features = [
+    "Location",
+    "Blob",
+    "RequestInit",
+    "RequestMode",
+    "Request",
+    "Response"
+] }

wgpu/examples/framework.rs

@@ -437,17 +437,29 @@ impl Spawner {
 
 #[cfg(not(target_arch = "wasm32"))]
 pub fn run<E: Example>(title: &str) {
+    run_with_setup::<E, _>(title, async {});
+}
+
+#[cfg(target_arch = "wasm32")]
+pub fn run<E: Example>(title: &str) {
+    run_with_setup::<E, _>(title, async {});
+}
+
+#[cfg(not(target_arch = "wasm32"))]
+pub fn run_with_setup<E: Example, F: Future + 'static>(title: &str, setup_block: F) {
     let setup = pollster::block_on(setup::<E>(title));
+    let _example_setup = pollster::block_on(setup_block);
     start::<E>(setup);
 }
 
 #[cfg(target_arch = "wasm32")]
-pub fn run<E: Example>(title: &str) {
+pub fn run_with_setup<E: Example, F: Future + 'static>(title: &str, setup_block: F) {
     use wasm_bindgen::{prelude::*, JsCast};
 
     let title = title.to_owned();
     wasm_bindgen_futures::spawn_local(async move {
         let setup = setup::<E>(&title).await;
+        let _example_setup = setup_block.await;
         let start_closure = Closure::once_into_js(move || start::<E>(setup));
 
         // make sure to handle JS exceptions thrown inside start.

wgpu/examples/hello-copy-source/README.md

@@ -0,0 +1,13 @@
+# hello-copy-source
+
+This example copy image data from `ImageBitmap` to `wgpu::Texture`.
+
+## To Run
+
+```
+cargo run-wasm --example hello-copy-source
+```
+
+## Screenshots
+
+![Window](./screenshot.png)