Add logging to window and context creation

glow/src/window/compositor.rs

@@ -20,6 +20,8 @@ impl iced_graphics::window::GLCompositor for Compositor {
     ) -> Result<(Self, Self::Renderer), Error> {
         let gl = glow::Context::from_loader_function(loader_function);
 
+        log::info!("{:#?}", settings);
+
         let version = gl.version();
         log::info!("Version: {:?}", version);
         log::info!("Embedded: {}", version.is_embedded);

glutin/Cargo.toml

@@ -13,6 +13,9 @@ categories = ["gui"]
 [features]
 debug = ["iced_winit/debug"]
 
+[dependencies.log]
+version = "0.4"
+
 [dependencies.glutin]
 version = "0.28"
 git = "https://github.com/iced-rs/glutin"

glutin/src/application.rs

@@ -61,6 +61,8 @@ where
             settings.id,
         );
 
+        log::info!("Window builder: {:#?}", builder);
+
         let opengl_builder = ContextBuilder::new()
             .with_vsync(true)
             .with_multisampling(C::sample_count(&compositor_settings) as u16);
@@ -75,9 +77,14 @@ where
             (opengl_builder, opengles_builder)
         };
 
+        log::info!("Trying first builder: {:#?}", first_builder);
+
         let context = first_builder
             .build_windowed(builder.clone(), &event_loop)
-            .or_else(|_| second_builder.build_windowed(builder, &event_loop))
+            .or_else(|_| {
+                log::info!("Trying second builder: {:#?}", second_builder);
+                second_builder.build_windowed(builder, &event_loop)
+            })
             .map_err(|error| {
                 use glutin::CreationError;
                 use iced_graphics::Error as ContextError;

wgpu/src/window/compositor.rs

@@ -28,6 +28,17 @@ impl Compositor {
     ) -> Option<Self> {
         let instance = wgpu::Instance::new(settings.internal_backend);
 
+        log::info!("{:#?}", settings);
+
+        #[cfg(not(target_arch = "wasm32"))]
+        {
+            let available_adapters: Vec<_> = instance
+                .enumerate_adapters(settings.internal_backend)
+                .map(|adapter| adapter.get_info())
+                .collect();
+            log::info!("Available adapters: {:#?}", available_adapters);
+        }
+
         #[allow(unsafe_code)]
         let compatible_surface = compatible_window
             .map(|window| unsafe { instance.create_surface(window) });
@@ -44,10 +55,14 @@ impl Compositor {
             })
             .await?;
 
+        log::info!("Selected: {:#?}", adapter.get_info());
+
         let format = compatible_surface
             .as_ref()
             .and_then(|surface| surface.get_preferred_format(&adapter))?;
 
+        log::info!("Selected format: {:?}", format);
+
         #[cfg(target_arch = "wasm32")]
         let limits = wgpu::Limits::downlevel_webgl2_defaults()
             .using_resolution(adapter.limits());

winit/src/application.rs

@@ -137,14 +137,16 @@ where
 
     let subscription = application.subscription();
 
-    let window = settings
-        .window
-        .into_builder(
-            &application.title(),
-            application.mode(),
-            event_loop.primary_monitor(),
-            settings.id,
-        )
+    let builder = settings.window.into_builder(
+        &application.title(),
+        application.mode(),
+        event_loop.primary_monitor(),
+        settings.id,
+    );
+
+    log::info!("Window builder: {:#?}", builder);
+
+    let window = builder
         .build(&event_loop)
         .map_err(Error::WindowCreationFailed)?;