Enable wgpu default features in eframe / egui_wgpu default features (#7344)

.github/workflows/rust.yml

@@ -127,7 +127,7 @@ jobs:
           components: rust-src
 
       - name: Check wasm32+atomics eframe with wgpu
-        run: RUSTFLAGS='-C target-feature=+atomics' cargo +${{env.NIGHTLY_VERSION}} check -p eframe --lib --no-default-features --features wgpu --target wasm32-unknown-unknown -Z build-std=std,panic_abort
+        run: RUSTFLAGS='-C target-feature=+atomics' cargo +${{env.NIGHTLY_VERSION}} check -p eframe --lib --no-default-features --features wgpu,wgpu/webgpu --target wasm32-unknown-unknown -Z build-std=std,panic_abort
 
   # ---------------------------------------------------------------------------
 

crates/eframe/Cargo.toml

@@ -40,6 +40,9 @@ default = [
   "winit/default",
   "x11",
   "egui-wgpu?/fragile-send-sync-non-atomic-wasm",
+  # Let's enable some backends so that users can use `eframe` out-of-the-box
+  # without having to explicitly opt-in to backends
+  "egui-wgpu?/default"
 ]
 
 ## Enable platform accessibility API implementations through [AccessKit](https://accesskit.dev/).
@@ -167,12 +170,7 @@ glutin-winit = { workspace = true, optional = true, default-features = false, fe
   "wgl",
 ] }
 home = { workspace = true, optional = true }
-wgpu = { workspace = true, optional = true, features = [
-  # Let's enable some backends so that users can use `eframe` out-of-the-box
-  # without having to explicitly opt-in to backends
-  "metal",
-  "webgpu",
-] }
+wgpu = { workspace = true, optional = true }
 
 # mac:
 [target.'cfg(any(target_os = "macos"))'.dependencies]
@@ -268,11 +266,7 @@ web-sys = { workspace = true, features = [
 
 # optional web:
 egui-wgpu = { workspace = true, optional = true } # if wgpu is used, use it without (!) winit
-wgpu = { workspace = true, optional = true, features = [
-  # Let's enable some backends so that users can use `eframe` out-of-the-box
-  # without having to explicitly opt-in to backends
-  "webgpu",
-] }
+wgpu = { workspace = true, optional = true }
 
 # Native dev dependencies for testing
 [target.'cfg(not(target_arch = "wasm32"))'.dev-dependencies]

crates/egui-wgpu/Cargo.toml

@@ -31,7 +31,7 @@ all-features = true
 rustdoc-args = ["--generate-link-to-definition"]
 
 [features]
-default = ["fragile-send-sync-non-atomic-wasm"]
+default = ["fragile-send-sync-non-atomic-wasm", "wgpu/default"]
 
 ## Enable [`winit`](https://docs.rs/winit) integration. On Linux, requires either `wayland` or `x11`
 winit = ["dep:winit", "winit/rwh_06"]