examples/drm: Don't force card{i} enumeration to start at 0

examples/drm.rs

@@ -168,12 +168,14 @@ mod imple {
         fn find() -> Result<Card, Box<dyn std::error::Error>> {
             for i in 0..10 {
                 let path = format!("/dev/dri/card{i}");
-                let device = Card::open(path)?;
+                // Card enumeration may not start at zero, allow failures while opening
+                let Ok(device) = Card::open(path) else {
+                    continue;
+                };
 
                 // Only use it if it has connectors.
-                let handles = match device.resource_handles() {
-                    Ok(handles) => handles,
-                    Err(_) => continue,
+                let Ok(handles) = device.resource_handles() else {
+                    continue;
                 };
 
                 if handles

src/backends/cg.rs

@@ -144,7 +144,10 @@ impl<D, W> Drop for CGImpl<D, W> {
 
 impl<D: HasDisplayHandle, W: HasWindowHandle> SurfaceInterface<D, W> for CGImpl<D, W> {
     type Context = D;
-    type Buffer<'a> = BufferImpl<'a, D, W> where Self: 'a;
+    type Buffer<'a>
+        = BufferImpl<'a, D, W>
+    where
+        Self: 'a;
 
     fn new(window_src: W, _display: &D) -> Result<Self, InitError<W>> {
         // `NSView`/`UIView` can only be accessed from the main thread.

src/backends/kms.rs

@@ -134,7 +134,10 @@ struct SharedBuffer {
 
 impl<D: HasDisplayHandle + ?Sized, W: HasWindowHandle> SurfaceInterface<D, W> for KmsImpl<D, W> {
     type Context = Arc<KmsDisplayImpl<D>>;
-    type Buffer<'a> = BufferImpl<'a, D, W> where Self: 'a;
+    type Buffer<'a>
+        = BufferImpl<'a, D, W>
+    where
+        Self: 'a;
 
     /// Create a new KMS backend.
     fn new(window: W, display: &Arc<KmsDisplayImpl<D>>) -> Result<Self, InitError<W>> {

src/backends/orbital.rs

@@ -128,7 +128,10 @@ impl<D: HasDisplayHandle, W: HasWindowHandle> OrbitalImpl<D, W> {
 
 impl<D: HasDisplayHandle, W: HasWindowHandle> SurfaceInterface<D, W> for OrbitalImpl<D, W> {
     type Context = D;
-    type Buffer<'a> = BufferImpl<'a, D, W> where Self: 'a;
+    type Buffer<'a>
+        = BufferImpl<'a, D, W>
+    where
+        Self: 'a;
 
     fn new(window: W, _display: &D) -> Result<Self, InitError<W>> {
         let raw = window.window_handle()?.as_raw();

src/backends/wayland/mod.rs

@@ -151,7 +151,10 @@ impl<D: HasDisplayHandle + ?Sized, W: HasWindowHandle> SurfaceInterface<D, W>
     for WaylandImpl<D, W>
 {
     type Context = Arc<WaylandDisplayImpl<D>>;
-    type Buffer<'a> = BufferImpl<'a, D, W> where Self: 'a;
+    type Buffer<'a>
+        = BufferImpl<'a, D, W>
+    where
+        Self: 'a;
 
     fn new(window: W, display: &Arc<WaylandDisplayImpl<D>>) -> Result<Self, InitError<W>> {
         // Get the raw Wayland window.

src/backends/web.rs

@@ -207,7 +207,10 @@
 
 impl<D: HasDisplayHandle, W: HasWindowHandle> SurfaceInterface<D, W> for WebImpl<D, W> {
     type Context = WebDisplayImpl<D>;
-    type Buffer<'a> = BufferImpl<'a, D, W> where Self: 'a;
+    type Buffer<'a>
+        = BufferImpl<'a, D, W>
+    where
+        Self: 'a;
 
     fn new(window: W, display: &WebDisplayImpl<D>) -> Result<Self, InitError<W>> {
         let raw = window.window_handle()?.as_raw();
@@ -374,7 +377,7 @@
     imp: &'a mut WebImpl<D, W>,
 }
 
 impl<'a, D: HasDisplayHandle, W: HasWindowHandle> BufferInterface for BufferImpl<'a, D, W> {
     fn pixels(&self) -> &[u32] {
         &self.imp.buffer
     }

src/backends/win32.rs

@@ -208,7 +208,10 @@
 
 impl<D: HasDisplayHandle, W: HasWindowHandle> SurfaceInterface<D, W> for Win32Impl<D, W> {
     type Context = D;
-    type Buffer<'a> = BufferImpl<'a, D, W> where Self: 'a;
+    type Buffer<'a>
+        = BufferImpl<'a, D, W>
+    where
+        Self: 'a;
 
     /// Create a new `Win32Impl` from a `Win32WindowHandle`.
     fn new(window: W, _display: &D) -> Result<Self, crate::error::InitError<W>> {
@@ -281,7 +284,7 @@
 
 pub struct BufferImpl<'a, D, W>(&'a mut Win32Impl<D, W>);
 
 impl<'a, D: HasDisplayHandle, W: HasWindowHandle> BufferInterface for BufferImpl<'a, D, W> {
     #[inline]
     fn pixels(&self) -> &[u32] {
         self.0.buffer.as_ref().unwrap().pixels()

src/backends/x11.rs

@@ -184,7 +184,10 @@ struct ShmBuffer {
 
 impl<D: HasDisplayHandle + ?Sized, W: HasWindowHandle> SurfaceInterface<D, W> for X11Impl<D, W> {
     type Context = Arc<X11DisplayImpl<D>>;
-    type Buffer<'a> = BufferImpl<'a, D, W> where Self: 'a;
+    type Buffer<'a>
+        = BufferImpl<'a, D, W>
+    where
+        Self: 'a;
 
     /// Create a new `X11Impl` from a `HasWindowHandle`.
     fn new(window_src: W, display: &Arc<X11DisplayImpl<D>>) -> Result<Self, InitError<W>> {