Enable WebGPU backend in wgpu by default instead of WebGL

Instead, we expose a new `webgl` feature.

Cargo.toml

@@ -39,6 +39,8 @@ palette = ["iced_core/palette"]
 system = ["iced_winit/system"]
 # Enables broken "sRGB linear" blending to reproduce color management of the Web
 web-colors = ["iced_renderer/web-colors"]
+# Enables the WebGL backend, replacing WebGPU
+webgl = ["iced_renderer/webgl"]
 # Enables the advanced module
 advanced = []
 

renderer/Cargo.toml

@@ -17,6 +17,7 @@ svg = ["iced_tiny_skia/svg", "iced_wgpu?/svg"]
 geometry = ["iced_graphics/geometry", "iced_tiny_skia/geometry", "iced_wgpu?/geometry"]
 tracing = ["iced_wgpu?/tracing"]
 web-colors = ["iced_wgpu?/web-colors"]
+webgl = ["iced_wgpu?/webgl"]
 
 [dependencies]
 raw-window-handle = "0.5"

wgpu/Cargo.toml

@@ -12,6 +12,7 @@ geometry = ["iced_graphics/geometry", "lyon"]
 image = ["iced_graphics/image"]
 svg = ["resvg"]
 web-colors = ["iced_graphics/web-colors"]
+webgl = ["wgpu/webgl"]
 
 [dependencies]
 wgpu = "0.17"
@@ -24,9 +25,6 @@ once_cell = "1.0"
 rustc-hash = "1.1"
 log = "0.4"
 
-[target.'cfg(target_arch = "wasm32")'.dependencies]
-wgpu = { version = "0.17", features = ["webgl"] }
-
 [dependencies.twox-hash]
 version = "1.6"
 default-features = false