Add x11 and wayland features to egui-wgpu and egui_glow

Closes #3492 #2286

crates/eframe/Cargo.toml

@@ -88,7 +88,7 @@ puffin = [
 ]
 
 ## Enables wayland support and fixes clipboard issue.
-wayland = ["egui-winit/wayland"]
+wayland = ["egui-winit/wayland", "egui-wgpu?/wayland", "egui_glow?/wayland"]
 
 ## Enable screen reader support (requires `ctx.options_mut(|o| o.screen_reader = true);`) on web.
 ##
@@ -114,7 +114,7 @@ web_screen_reader = [
 wgpu = ["dep:wgpu", "dep:egui-wgpu", "dep:pollster"]
 
 ## Enables compiling for x11.
-x11 = ["egui-winit/x11"]
+x11 = ["egui-winit/x11", "egui-wgpu?/x11", "egui_glow?/x11"]
 
 ## If set, eframe will look for the env-var `EFRAME_SCREENSHOT_TO` and write a screenshot to that location, and then quit.
 ## This is used to generate images for examples.

crates/egui-wgpu/Cargo.toml

@@ -31,9 +31,15 @@ all-features = true
 ## Enable profiling with the [`puffin`](https://docs.rs/puffin) crate.
 puffin = ["dep:puffin"]
 
-## Enable [`winit`](https://docs.rs/winit) integration.
+## Enable [`winit`](https://docs.rs/winit) integration. On Linux, requires either `wayland` or `x11`
 winit = ["dep:winit"]
 
+## Enables Wayland support for winit.
+wayland = ["winit?/wayland"]
+
+## Enables x11 support for winit.
+x11 = ["winit?/x11"]
+
 
 [dependencies]
 egui = { version = "0.25.0", path = "../egui", default-features = false }

crates/egui_glow/Cargo.toml

@@ -39,9 +39,15 @@ links = ["egui-winit?/links"]
 ## Enable profiling with the [`puffin`](https://docs.rs/puffin) crate.
 puffin = ["dep:puffin", "egui-winit?/puffin", "egui/puffin"]
 
-## Enable [`winit`](https://docs.rs/winit) integration.
+## Enable [`winit`](https://docs.rs/winit) integration. On Linux, requires either `wayland` or `x11`
 winit = ["egui-winit", "dep:winit"]
 
+## Enables Wayland support for winit.
+wayland = ["winit?/wayland"]
+
+## Enables x11 support for winit.
+x11 = ["winit?/x11"]
+
 
 [dependencies]
 egui = { version = "0.25.0", path = "../egui", default-features = false, features = [